Antenna structure and electronic equipment thereof

Abstract

The invention provides an antenna structure and electronic equipment thereof. The antenna structure uses the conductive part of the frame as a radiator. Feed parts are arranged on one side of the radiator at intervals, the antenna structure feeds electric signals into the radiator in an indirect coupling mode, and the feed parts and the radiator are used for generating first resonance and second resonance. According to the antenna structure, a broadband resonance frequency band can be jointly formed by using two resonances. Moreover, in the resonant frequency band, the antenna structure has good radiation efficiency and system efficiency, so that the electronic equipment has good communication performance.

Description

[0001] This application claims the priority of the Chinese patent application filed with the China Patent Office on August 31, 2023, with application number 202311129261.9 and application name “An Electronic Device”, all contents of which are incorporated by reference in this application. Technical Field

[0002] The present application relates to the field of wireless communications, and in particular to an antenna structure and electronic equipment thereof. Background Art

[0003] As people's demand for high-speed data transmission increases, the development trend of industrial design (ID) of electronic devices is large screen ratio and multiple cameras. This has led to a significant reduction in antenna clearance and increasingly limited layout space.

[0004] Under the current circumstances, the communication frequency bands of electronic devices will continue to coexist with the third generation of mobile communication technology (3G), the fourth generation of mobile communication technology (4G), and the fifth generation of mobile communication technology (5G), and more and more antennas are required.

[0005] However, the traditional method of expanding the efficiency bandwidth of the antenna by increasing the size of the antenna radiator has reached a bottleneck. Therefore, it is imperative to improve the efficiency bandwidth of the antenna while keeping the size of the radiator unchanged. Summary of the invention

[0006] The present application provides an electronic device, including an antenna. The antenna uses the conductive part of the frame of the electronic device as a radiator. A feeder is arranged at intervals on one side of the radiator, and the antenna feeds an electrical signal to the radiator by indirect coupling, and the antenna can generate a first resonance and a second resonance. The antenna can form a resonance frequency band by using two resonances to expand the bandwidth.

[0007] In a first aspect, an electronic device is provided, comprising: a floor; a first frame, the first frame is at least partially spaced apart from the floor, the first frame comprises a first position and a second position, the first frame is coupled to the floor at the first position and the second position, the first frame has a first gap between the first position and the second position, and the first gap is located in a central area between the first position and the second position; an antenna, the antenna comprising: a first radiator, the first radiator comprises a conductive portion of the first frame between the first position and the second position; a first feeder, the first end of the first feeder is an open end, the first radiator and the first feeder are spaced apart, and the first radiator and the first feeder at least partially overlap along a first direction, the first direction is perpendicular to the extension direction of the radiator or perpendicular to the extension direction of the feeder; a first feeding circuit, the first feeding circuit comprises a first feeding point, and the first feeding circuit is coupled to the first feeding point; wherein the first feeding element and the first radiator are used to generate a first resonance and a second resonance, and the first resonance and the second resonance are used to jointly support an operating frequency band of the electronic device.

[0008] According to an embodiment of the present application, the first radiator can form a radiator structure that conforms to a slot antenna. When the first feeding circuit feeds an electrical signal, the antenna can generate the above-mentioned first resonance and second resonance to expand the working bandwidth of the antenna. Both the first resonance and the second resonance can be regarded as being generated by the slot CM mode. Since the slot CM mode has higher radiation efficiency and system efficiency, the antenna has better radiation efficiency and system efficiency within the working frequency band formed by the first resonance and the second resonance.

[0009] In combination with the first aspect, in some implementations of the first aspect, at a resonance point of the first resonance, the currents on the first radiator are in the same direction; at a resonance point of the second resonance, the currents on the first radiator are in the same direction.

[0010] In combination with the first aspect, in some implementations of the first aspect, at a resonance point of the first resonance, currents on the first feeding element are in the same direction; at a resonance point of the second resonance, currents on the first feeding element are in the same direction.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the first frame also includes a third position, the first position, the second position and the third position are arranged in sequence, and the first frame has a second gap at the third position; the first radiator is the conductive part of the first frame between the first position and the third position.

[0012] In combination with the first aspect, in some implementations of the first aspect, the first radiator is further used to generate a third resonance; at the resonance point of the third resonance, the currents on the first radiators on both sides of the first gap are reversed.

[0013] In combination with the first aspect, in some implementations of the first aspect, the second end of the first feeding element is an open end.

[0014] In combination with the first aspect, in some implementations of the first aspect, the second end of the first feeding element is grounded through a capacitive device.

[0015] In combination with the first aspect, in some implementations of the first aspect, the first feeding element further includes a grounding point, the grounding point is coupled to the floor, and the lengths of the first feeding elements on both sides of the grounding point are different.

[0016] In combination with the first aspect, in some implementations of the first aspect, a first shell and a second shell, the first shell includes the first frame, the second shell includes the second frame, the second frame is at least partially spaced from the floor, the second frame includes a third position and a fourth position, the second frame has a second slit and a third slit respectively at the third position and the fourth position; a first rotating shaft, the first rotating shaft is located between the first shell and the second shell, and the first rotating shaft is rotatably connected to the first shell and the second shell respectively; wherein the antenna includes: a second radiator, the second radiator is a conductive part of the second frame between the third position and the fourth position; a second feeder, the first end and the second end of the second feeder are grounded ends, the second radiator and the second feeder are spaced, and the second radiator and the second feeder at least partially overlap along a second direction, the second direction being a direction perpendicular to the extension direction of the second radiator; a second feeding circuit, the second feeding circuit includes a second feeding point, and the second feeding circuit is coupled to the second feeding point; wherein the second radiator is used to generate a third resonance and a fourth resonance, and the third resonance and the fourth resonance are used to jointly support an operating frequency band of the electronic device.

[0017] In combination with the first aspect, in some implementations of the first aspect, a first shell and a second shell, the first shell includes the first frame, the second shell includes the second frame, the second frame is at least partially spaced from the floor, the second frame includes a third position and a fourth position, and the second frame is coupled to the floor at the third position and the fourth position; a first rotating shaft, the first rotating shaft is located between the first shell and the second shell, and the first rotating shaft is rotatably connected to the first shell and the second shell respectively; wherein the antenna includes: a second radiator, the first end and the second end of the second radiator are open ends; a second feeder, the second feeder is a conductive part of the second frame between the third position and the fourth position, the second radiator and the second feeder are spaced, and the second radiator and the second feeder at least partially overlap along a second direction, and the second direction is a direction perpendicular to the extension direction of the second radiator; a second feeding circuit, the second feeding circuit includes a second feeding point, and the second feeding circuit is coupled to the second feeding point; wherein the second radiator is used to generate a third resonance and a fourth resonance, and the third resonance and the fourth resonance are used to jointly support an operating frequency band of the electronic device.

[0018] In combination with the first aspect, in some implementations of the first aspect, the antenna includes: a second feed and a second feed circuit; wherein the second feed is spaced apart from the first feed and the first radiator; the first end and the second end of the first feed are open ends, and the first end and the second end of the second feed are ground ends; the second feed includes a second feeding point, and the second feeding circuit is coupled to the second feeding point; the first radiator is used to generate a third resonance and a fourth resonance, and the third resonance and the fourth resonance are used to jointly support an operating frequency band of the electronic device.

[0019] In combination with the first aspect, in some implementations of the first aspect, the second end of the first feeder is an open end, and the physical length L1 of the first radiator and the physical length L2 of the first feeder satisfy: L1×70%≤L2≤L1×130%.

[0020] In combination with the first aspect, in some implementations of the first aspect, the second end of the first feeder is a ground end, and the physical length L1 of the first radiator and the physical length L2 of the first feeder satisfy: L1×35%≤L2≤L1×65%.

[0021] In combination with the first aspect, in some implementations of the first aspect, a distance D between the first feeding element and the first radiator is less than or equal to 5 mm.

[0022] In combination with the first aspect, in some implementations of the first aspect, the electronic device further includes a bracket, a back cover and a printed circuit board PCB, at least a portion of the bracket is located between the back cover and the PCB; and the feeder is disposed on a surface of the bracket.

[0023] In a second aspect, an electronic device is provided, comprising: a floor; a first frame, the first frame is at least partially spaced apart from the floor, the first frame comprises a grounding point, a first position and a second position, the first frame has a first gap and a second gap respectively formed at the first position and the second position, the grounding point is located in a central area between the first position and the second position, and the first frame is coupled to the floor at the grounding point; an antenna, the antenna comprising: a first radiator, the first radiator comprises a conductive portion of the first frame between the first position and the second position; a first feeder, the first end of the first feeder is a grounding end, the first radiator and the first feeder are spaced apart, and the first radiator and the first feeder at least partially overlap along a first direction, the first direction being a direction perpendicular to the extension direction of the first radiator; a first feeding circuit, the first feeding member comprises a first feeding point, and the first feeding circuit is coupled to the first feeding point; wherein the first feeding member and the first radiator are used to generate a first resonance and a second resonance, and the first resonance and the second resonance are used to jointly support an operating frequency band of the electronic device.

[0024] According to an embodiment of the present application, the first radiator can form a radiator structure that conforms to a linear antenna. When the first feeding circuit feeds an electrical signal, the antenna can generate the above-mentioned first resonance and second resonance to expand the working bandwidth of the antenna. The first resonance and the second resonance can both be regarded as being generated by the linear CM mode. Since the linear CM mode has higher radiation efficiency and system efficiency, the antenna has better radiation efficiency and system efficiency within the working frequency band formed by the first resonance and the second resonance.

[0025] In combination with the second aspect, in some implementations of the second aspect, at the resonance point of the first resonance, the currents on the first radiators on both sides of the grounding point are reversed; at the resonance point of the second resonance, the currents on the first radiators on both sides of the grounding point are reversed.

[0026] In combination with the second aspect, in some implementations of the second aspect, at the resonance point of the first resonance, currents on both sides of the center of the first feeding element are reversed; at the resonance point of the second resonance, currents on both sides of the center of the first feeding element are reversed.

[0027] In combination with the second aspect, in certain implementations of the second aspect, the first frame also includes a third position, the first position, the second position and the third position are arranged in sequence, and the first frame is coupled to the floor at the third position; the first radiator is the conductive part of the first frame between the first position and the third position.

[0028] In combination with the second aspect, in some implementations of the second aspect, the first radiator is further used to generate a third resonance; at the resonance point of the third resonance, the current on the first radiator is reversed.

[0029] In combination with the second aspect, in some implementations of the second aspect, the second end of the first feeding element is a ground end.

[0030] In combination with the second aspect, in some implementations of the second aspect, the second end of the first feeding element is physically grounded or grounded through an inductive device.

[0031] In combination with the second aspect, in certain implementations of the second aspect, a first shell and a second shell, the first shell includes the first frame, the second shell includes the second frame, the second frame is at least partially spaced apart from the floor, the second frame includes a third position and a fourth position, the second frame is coupled to the floor at the third position and the fourth position, the second frame has a third gap between the first position and the second position, and the third gap is located in a central area between the first position and the second position; a first rotating shaft, the first rotating shaft is located between the first shell and the second shell, and the first rotating shaft is rotatably connected to the first shell and the second shell respectively; wherein, The antenna includes: a second radiator, which is a conductive part of the second frame between the third position and the fourth position; a second feeder, wherein the first end and the second end of the second feeder are open ends, the second radiator and the second feeder are arranged at intervals, and the second radiator and the second feeder at least partially overlap along a second direction, and the second direction is a direction perpendicular to the extension direction of the second radiator; a second feeding circuit, the second feeding element includes a second feeding point, and the second feeding circuit is coupled to the second feeding point; wherein the second radiator is used to generate a third resonance and a fourth resonance, and the third resonance and the fourth resonance are used to jointly support an operating frequency band of the electronic device.

[0032] In combination with the second aspect, in some implementations of the second aspect, a first shell and a second shell, the first shell includes the first frame, the second shell includes the second frame, the second frame is at least partially spaced from the floor, the second frame includes a third position and a fourth position, the second frame has a third slit and a fourth slit respectively at the third position and the fourth position; a first rotating shaft, the first rotating shaft is located between the first shell and the second shell, and the first rotating shaft is rotatably connected to the first shell and the second shell respectively; wherein the antenna includes: a second radiator, the first end and the second end of the second radiator are grounded; a second feeder, the second feeder is a conductive part of the second frame between the third position and the fourth position, the second radiator and the second feeder are spaced, and the second radiator and the second feeder at least partially overlap along a second direction, the second direction being a direction perpendicular to the extension direction of the second radiator; a second feeding circuit, the second feeding circuit includes a second feeding point, and the second feeding circuit is coupled to the second feeding point; wherein the second radiator is used to generate a third resonance and a fourth resonance, and the third resonance and the fourth resonance are used to jointly support an operating frequency band of the electronic device.

[0033] In combination with the second aspect, in some implementations of the second aspect, the antenna includes: a second feed and a second feed circuit; wherein the second feed is spaced apart from the first feed and the first radiator; the first end and the second end of the first feed are grounded ends, and the first end and the second end of the second feed are open ends; the second feed includes a second feeding point, and the second feeding circuit is coupled to the second feeding point; the first radiator is used to generate a third resonance and a fourth resonance, and the third resonance and the fourth resonance are used to jointly support an operating frequency band of the electronic device.

[0034] In combination with the second aspect, in some implementations of the second aspect, the second end of the first feeder is a ground end, and the physical length L1 of the first radiator and the physical length L2 of the first feeder satisfy: L1×70%≤L2≤L1×130%.

[0035] In combination with the second aspect, in some implementations of the second aspect, the second end of the first feeder is an open end, and the physical length L1 of the first radiator and the physical length L2 of the first feeder satisfy: L1×35%≤L2≤L1×65%.

[0036] In combination with the second aspect, in some implementations of the second aspect, a distance D between the first feeding element and the first radiator is less than or equal to 5 mm.

[0037] In combination with the second aspect, in some implementations of the second aspect, the electronic device further includes a bracket, a back cover and a printed circuit board PCB, at least a portion of the bracket is located between the back cover and the PCB; and the feeder is disposed on a surface of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0039] Figure 2 This is a schematic diagram of the common mode structure of an antenna provided in the present application and the corresponding current and electric field distribution.

[0040] Figure 3 This is a schematic diagram of the structure of a differential mode of an antenna provided in the present application and the corresponding current and electric field distribution.

[0041] Figure 4 It is the structure of the common mode mode of the antenna provided in this application and the corresponding distribution diagram of current, electric field and magnetic current.

[0042] Figure 5 It is the structure of the differential mode of the antenna provided by this application and the corresponding distribution diagram of current, electric field and magnetic current.

[0043] Figure 6 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0044] Figure 7 yes Figure 6 The S-parameter simulation results of the antenna 100 in the electronic device 10 are shown.

[0045] Figure 8 yes Figure 6 The simulation results of system efficiency and radiation efficiency of the antenna 100 in the electronic device 10 are shown.

[0046] Fig. 9 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0047] Fig.10 It is a partial cross-sectional view of the electronic device 10 provided in an embodiment of the present application along the first direction.

[0048] Fig.11 yes Fig. 9 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0049] Fig.12 yes Fig. 9 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0050] Fig.13 yes Fig. 9 FIG. 5 is a schematic diagram of current distribution of the antenna at the first resonance point (1.87 GHz).

[0051] Fig.14 yes Fig. 9 FIG. 5 is a schematic diagram of current distribution of the antenna at the second resonance point (2.23 GHz).

[0052] Fig.15 yes Fig. 9 Schematic diagram of current distribution of the antenna shown in at 3.19 GHz.

[0053] Fig.16 yes Fig. 9 Schematic diagram of the electric field distribution of the antenna at the first resonance point (1.87 GHz) shown in FIG.

[0054] Fig.17 yes Fig. 9 Schematic diagram of the electric field distribution of the antenna at the second resonance point (2.23 GHz) shown in FIG.

[0055] Fig.18 yes Fig. 9 Schematic diagram of the electric field distribution of the antenna shown in at 3.19 GHz.

[0056] Fig.19 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0057] Fig. 20 yes Fig.19 The S-parameter simulation results of the antenna 200 in the electronic device 10 under different conditions are shown.

[0058] Fig.21 yes Fig.19 The illustrated system efficiency and radiation efficiency simulation results of the antenna 200 in the electronic device 10 under different conditions.

[0059] Fig. 22 yes Fig.19 The S-parameter simulation results of the antenna in the electronic device 10 are shown when the feeding element is set at different positions.

[0060] Fig.23 yes Fig.19 The simulation results of the system efficiency and radiation efficiency of the antenna in the electronic device 10 are shown when the feeding element is set at different positions.

[0061] Fig.24 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0062] Fig.25 yes Fig.24The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0063] Fig.26 yes Fig.24 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0064] Fig. 27 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0065] Fig.28 yes Fig. 27 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0066] Fig.29 yes Fig. 27 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0067] Fig.30 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0068] Fig.31 yes Fig. 9 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0069] Fig.32 yes Fig.30 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0070] Fig.33 yes Fig.30 FIG. 5 is a schematic diagram of current distribution of the antenna at the first resonance point (2.12 GHz).

[0071] Fig.34 yes Fig.30 FIG. 5 is a schematic diagram of current distribution of the antenna at the second resonance point (2.45 GHz).

[0072] Fig.35 yes Fig.30 Schematic diagram of current distribution of the antenna at the third resonance point (3.43 GHz) shown in FIG.

[0073] Fig.36 yes Fig.30 Schematic diagram of current distribution of the antenna at the fourth resonance point (3.54 GHz) shown in FIG.

[0074] Fig.37 yes Fig.30 Schematic diagram of the electric field distribution of the antenna at the first resonance point (2.12 GHz).

[0075] Fig.38 yes Fig.30 Schematic diagram of the electric field distribution of the antenna at the second resonance point (2.45 GHz) shown in FIG.

[0076] Fig.39 yes Fig.30 Schematic diagram of the electric field distribution of the antenna at the third resonance point (3.43 GHz) shown in FIG.

[0077] Fig.40 yes Fig.30 Schematic diagram of electric field distribution of the antenna at the fourth resonance point (3.54 GHz) shown in FIG.

[0078] Fig.41 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0079] Fig.42 yes Fig.41 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0080] Fig.43 yes Fig.41 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0081] Fig.44 yes Fig.41 FIG. 5 is a schematic diagram of current distribution of the antenna at the first resonance point (1.79 GHz).

[0082] Fig.45 yes Fig.30 FIG. 5 is a schematic diagram of current distribution of the antenna at the second resonance point (2.01 GHz).

[0083] Fig.46 yes Fig.30 FIG. 5 is a schematic diagram of current distribution of the antenna at the fifth resonance point (2.24 GHz).

[0084] Fig.47 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0085] Fig.48 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0086] Fig.49 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0087] Fig.50 yes Fig.49 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0088] Fig.51 yes Fig.49 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0089] Fig.52 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0090] Fig.53 yes Fig.52 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0091] Fig.54 yes Fig.52 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0092] Fig.55 yes Fig.52 FIG. 5 is a schematic diagram of current distribution of the antenna at the first resonance point (1.88 GHz).

[0093] Fig.56 yes Fig.52 FIG. 5 is a schematic diagram of current distribution of the antenna at the second resonance point (2.16 GHz).

[0094] Fig.57 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0095] Fig.58 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0096] Fig.59 yes Fig.58 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0097] Fig.60 yes Fig.58 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0098] Fig.61 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0099] Fig.62 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0100] Fig.63 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0101] Fig.64 yes Fig.62The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0102] Fig.65 yes Fig.62 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0103] Fig.66 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0104] Fig.67 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0105] Fig.68 yes Fig.67 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0106] Fig.69 yes Fig.67 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0107] Fig.70 yes Fig.67 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0108] Fig.71 yes Fig.67 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0109] Fig.72 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0110] Fig.73 yes Fig.72 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown.

[0111] Fig.74 yes Fig.72 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0112] Fig.75 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0113] Fig.76 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0114] Fig.77 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0115] Fig.78 yes Fig.76 The S-parameter simulation results of the antenna 200 when the electronic device 10 is in the unfolded state are shown.

[0116] Fig.79 yes Fig.76 The illustrated S-parameter simulation results of the antenna 200 when the electronic device 10 is in the folded state.

[0117] Fig.80 yes Fig.76 The illustrated simulation results show the system efficiency and radiation efficiency of the antenna 200 when the electronic device 10 is in the unfolded state.

[0118] Fig.81 yes Fig.76 The illustrated system efficiency and radiation efficiency simulation results of the antenna 200 when the electronic device 10 is in the folded state.

[0119] Fig.82 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0120] Fig.83 yes Fig.82 The S-parameter simulation results of the antenna 200 when the electronic device 10 is in the unfolded state are shown.

[0121] Fig.84 yes Fig.82 The illustrated S-parameter simulation results of the antenna 200 when the electronic device 10 is in the folded state.

[0122] Fig.85 yes Fig.82 The illustrated simulation results show the system efficiency and radiation efficiency of the antenna 200 when the electronic device 10 is in the unfolded state.

[0123] Fig.86 yes Fig.82 The illustrated system efficiency and radiation efficiency simulation results of the antenna 200 when the electronic device 10 is in the folded state.

[0124] Fig.87 yes Fig.82 The simulation results of the directivity coefficient of the antenna 200 when the electronic device 10 is in the unfolded state are shown.

[0125] Fig.88 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0126] Fig.89 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0127] Fig.90 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0128] Fig.91 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0129] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0130] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0131] When used in this application, “within the range of…”, unless it is separately specified that an end value is not included, it is assumed that both end values ​​of the range are included. For example, in the range of 1 to 5, the two values ​​1 and 5 are included.

[0132] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupled connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the connection between different components in the circuit structure through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by coupling between the gaps between two conductive parts to form an equivalent capacitor.

[0133] Component / device: includes at least one of lumped component / device and distributed component / device.

[0134] Lumped component / device: refers to the collective name for all components when the size of the component is much smaller than the wavelength relative to the circuit operating frequency. For the signal, regardless of any time, the component characteristics always remain fixed and are independent of frequency.

[0135] Distributed components / devices: Unlike lumped components, if the size of the component is similar to or larger than the wavelength relative to the circuit operating frequency, then when the signal passes through the component, the characteristics of each point of the component itself will vary due to changes in the signal. At this time, the component as a whole cannot be regarded as a single entity with fixed characteristics, but should be called a distributed component.

[0136] Capacitance: It can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitors; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0137] Inductance: It can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive parts.

[0138] Inductive device: can be understood as including one or more inductors, or a combination of one or more inductors and one or more capacitors, or may also include a combination of other devices (such as resistors). The inductive device as a whole should be inductive.

[0139] Capacitive device: can be understood as including one or more capacitors, or a combination of one or more capacitors and one or more inductors, or may also include a combination of other devices (such as resistors). The capacitive device as a whole should be capacitive.

[0140] Radiator: It is a device in the antenna used to receive / send electromagnetic wave radiation. In some cases, the "antenna" in a narrow sense is understood as a radiator, which converts the waveguide energy from the transmitter into radio waves, or converts radio waves into waveguide energy, which is used to radiate and receive radio waves. The modulated high-frequency current energy (or waveguide energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, and is converted into a certain polarized electromagnetic wave energy by the radiator and radiated in the desired direction. The receiving radiator converts a certain polarized electromagnetic wave energy from a specific direction in space into modulated high-frequency current energy, which is transmitted to the receiver input via the feeder line.

[0141] The radiator may include a conductor with a specific shape and size, such as a linear or sheet shape, etc., and the present application does not limit the specific shape. In one embodiment, the linear radiator may be referred to as a linear antenna. In one embodiment, the linear radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, the linear radiator may be implemented by a bracket conductor, and may also be referred to as a bracket antenna. In one embodiment, the linear radiator, or the radiator of the linear antenna, has a wire diameter (e.g., including thickness and width) much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna generally includes two radiating branches, and each branch is fed by a feeding unit from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted-F antenna because its side view is an inverted F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also known as PIFA, Planar Inverted FAntenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes a circle, a rectangle, a ring, etc., and the present application does not limit the specific shape. The structure of the microstrip antenna is generally composed of a dielectric substrate, a radiator and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0142] The radiator may also include a slot or a slit formed on the conductor, for example, a closed or semi-closed slot or slit formed on a grounded conductor surface. In one embodiment, a slotted or slitted radiator may be referred to as a slot antenna or a slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slit of the slot antenna / slot antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slit may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slit (e.g., an opening is added to a closed slot or slit) may be referred to as an open slot antenna. In some embodiments, the slot shape is a long strip. In some embodiments, the length of the slot is about half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the slot is about an integer multiple of the wavelength (e.g., one times the dielectric wavelength). In some embodiments, the slot can be fed by a transmission line connected across one or both sides thereof, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a conductive frame with both ends grounded, which can also be called a frame antenna; in this embodiment, it can be regarded as that the slot antenna or slot antenna includes a linear radiator, which is spaced apart from the floor and grounded at both ends of the radiator, thereby forming a closed or semi-closed slot or slot. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a bracket conductor with both ends grounded, which can also be called a bracket antenna.

[0143] The feed circuit is a combination of all circuits used for receiving and transmitting radio frequency signals. The feed circuit may include a transceiver and an RF front end circuit. In some cases, the "feed circuit" is understood in a narrow sense as a radio frequency chip (RFIC, radio frequency integrated circuit), and RFIC can be considered to include a radio frequency front end chip and a transceiver. The feed circuit has the function of converting radio waves (e.g., radio frequency signals) and electrical signals (e.g., digital signals). Generally, it is considered to be part of the radio frequency.

[0144] In some embodiments, the electronic device may further include a test socket (or referred to as a radio frequency socket or a radio frequency test socket). The test socket may be used to insert a coaxial cable to test the characteristics of the radio frequency front-end circuit or the radiator of the antenna through the cable. The radio frequency front-end circuit may be considered as a circuit portion coupled between the test socket and the transceiver.

[0145] In some embodiments, the RF front-end circuit may be integrated into a RF front-end chip in the electronic device, or the RF front-end circuit and the transceiver may be integrated into a RF chip in the electronic device.

[0146] It should be understood that any two of the first / second / …Nth feeding circuits in the present application can share the same transceiver, for example, transmitting signals through a RF channel in a transceiver (for example, a port (pin) of a RF chip); they can also share a RF front-end circuit, for example, processing signals through a switch or amplifier in a RF front-end.

[0147] It should also be understood that two feeding circuits in the first / second / ...Nth feeding circuits in the present application usually correspond to two radio frequency test sockets in the electronic device.

[0148] The matching circuit is a circuit used to adjust the radiation characteristics of the antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. In one embodiment, the matching circuit is coupled between the test socket and the radiator. Generally, the matching circuit is a combination of circuits coupled between the radiator and the floor. In one embodiment, the matching circuit may include a switch and / or an electronic component, and the switch may be an electronic component for switching the coupling connection of the radiator. The matching circuit has the function of impedance matching and / or frequency tuning. Generally, it is considered to be a part of the antenna.

[0149] The grounding structure / feeding structure may include a connector, such as a metal spring, and the radiator is coupled to the floor through the grounding structure / feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure may include a transmission line / feeding line, and the grounding structure may include a grounding line.

[0150] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of the antenna radiator cannot be narrowly understood as an end point or end portion that is physically disconnected from other radiators, but can also be considered as a point or a section on a continuous radiator. In one embodiment, the "end / point" may include a connection / coupling area on the antenna radiator that is coupled to other conductive structures. For example, the feed end / feeding point may be a coupling area on the antenna radiator that is coupled to the feed structure (for example, an area facing a portion of the feed structure). For another example, the ground end / grounding point may be a connection / coupling area on the antenna radiator that is coupled to the ground structure.

[0151] Open end, closed end: In some embodiments, the open end and the closed end are, for example, relative to whether they are grounded, the closed end is grounded, and the open end is not grounded. In one embodiment, the open end can also be called a floating end, a free end, an open end, or an open circuit end. In one embodiment, the closed end can also be called a grounded end or a short circuit end. It should be understood that in some embodiments, other conductors can be connected through open end coupling to transfer coupling energy (which can be understood as transferring current).

[0152] In some embodiments, the open end and the closed end are, for example, relative to other conductors. The closed end is electrically connected to the other conductors, and the open end is not electrically connected to the other conductors.

[0153] To simply understand the "open end" of a radiator, one end of the radiator is spaced apart from the floor or coupled to the floor through a capacitive device, which can be regarded as the open end of the radiator.

[0154] To simply understand the "ground end" of the radiator, one end of the radiator is directly connected to the floor or coupled to the floor through an inductive device, which can be regarded as the ground end of the radiator.

[0155] In some embodiments, the "closed end" can also be understood from the perspective of current distribution. The closed end or the grounded end, etc., can be understood as a point with larger current on the radiator, or as a point with smaller electric field on the radiator. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by coupling electronic devices (for example, inductive devices, etc.) through the closed end. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by opening a gap at or near the closed end (for example, a gap filled with insulating material).

[0156] In some embodiments, the "open end" can also be understood from the perspective of current distribution. The open end or suspended end, etc., can be understood as a point with smaller current on the radiator, or as a point with larger electric field on the radiator. In one embodiment, coupling electronic devices (for example, capacitive devices, etc.) through the open end can maintain the current distribution characteristics of the smaller current point / larger electric field point.

[0157] It should be understood that coupling electronic devices (for example, capacitors, inductors, etc.) at a radiator end at a gap (from the perspective of the structure of the radiator, it is similar to a radiator at an opening of an open end or a suspended end) can make the radiator end a point with larger current / smaller electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0158] The “suspended radiator” mentioned in the embodiments of the present application means that the radiator is not directly connected to the feeder line / feeder branch and / or the grounding line / grounding branch, but is fed and / or grounded through indirect coupling.

[0159] It should be understood that the "suspended" in "suspended end" or "suspended radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the suspended radiator can be, for example, a radiator disposed on the inner surface of the insulating back cover.

[0160] The current same direction / reverse direction mentioned in the embodiments of the present application should be understood as the direction of the main current on the conductor on the same side is the same direction / reverse direction. For example, when stimulating a distributed current in the same direction on a conductor that is bent or annular (for example, the current path is also bent or annular), it should be understood that, for example, the main current stimulating on the conductors on both sides of the annular conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) is opposite in direction, but it still belongs to the definition of the distributed current in the same direction in the embodiments of the present application. In one embodiment, the current same direction on a conductor may refer to the current on the conductor having no reverse point. In one embodiment, the current reverse on a conductor may refer to the current on the conductor having at least one reverse point. In one embodiment, the current same direction on two conductors may refer to the current on both conductors having no reverse point and flowing in the same direction. In one embodiment, the current reverse on two conductors may refer to the current on both conductors having no reverse point and flowing in opposite directions. The current same direction / reverse direction on multiple conductors can be understood accordingly.

[0161] The electric field in the same direction / reverse direction mentioned in the embodiments of the present application should be understood as the direction of the main electric field (for example, the electric field between the conductor and the floor) generated by the conductor in the space is in the same direction / reverse direction. For example, when a unidirectional distributed electric field is excited on a bent or ring-shaped conductor (for example, the gap formed between the floor and the conductor is also bent or ring-shaped), it should be understood that, for example, the direction of the electric field in the gap is from the floor to the conductor, or from the conductor to the floor. Although the main electric field excited in the gaps on both sides of the ring-shaped conductor (for example, a conductor surrounding a gap, in the gaps on both sides of the gap) is reversed in direction, it still belongs to the definition of the unidirectional distributed electric field in the embodiments of the present application. In one embodiment, the electric field in the same direction between a conductor and the floor can refer to the electric field between the conductor and the floor having no reverse point. In one embodiment, the electric field in the reverse direction between a conductor and the floor can refer to the electric field between the conductor and the floor having at least one reverse point. In one embodiment, the electric field in the same direction between two conductors and the floor can refer to the electric fields between the two conductors and the floor having no reverse point and radiating in the same direction (for example, the positive direction of the z-axis). In one embodiment, the electric field reversal between two conductors and the floor may mean that the electric fields between the two conductors and the floor have no reversal points and flow in opposite directions. The electric fields between multiple conductors and the floor may be understood to be in the same direction / opposite direction accordingly.

[0162] Resonance / resonance frequency: The resonance frequency is also called the resonance frequency. The resonance frequency can have a frequency range, that is, the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance point is the center frequency point frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, the antenna / radiator mentioned in this application produces a "first / second... resonance", where the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to the specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0163] Resonant frequency band: The range of the resonant frequency is the resonant frequency band. The return loss characteristic of any frequency point in the resonant frequency band can be less than -6dB or -5dB.

[0164] Communication frequency band / working frequency band: Regardless of the type of antenna, it always works within a certain frequency range (band width). For example, an antenna that supports the B40 frequency band has a working frequency band that includes frequencies in the range of 2300MHz to 2400MHz, or in other words, the working frequency band of the antenna includes the B40 frequency band. The frequency range that meets the index requirements can be regarded as the working frequency band of the antenna.

[0165] The resonant frequency band and the operating frequency band may be the same, or may partially overlap. In one embodiment, one or more resonant frequency bands of the antenna may cover one or more operating frequency bands of the antenna.

[0166] Electrical length: It can refer to the ratio of physical length (ie mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0167]

[0168] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0169] Wavelength: or operating wavelength, which can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, then the operating wavelength can be the wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "operating wavelength" can also refer to the wavelength corresponding to the non-center frequency of the resonant frequency or the operating frequency band.

[0170] It should be understood that the wavelength of the radiation signal in air can be calculated as follows: (wavelength in air, or wavelength in vacuum) = speed of light / frequency, where frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3×10 8m / s. The wavelength of the radiation signal in the medium can be calculated as follows: Among them, ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application generally refers to the dielectric wavelength, which can be the dielectric wavelength corresponding to the center frequency of the resonant frequency, or the dielectric wavelength corresponding to the center frequency of the working frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, the wavelength can be the dielectric wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "dielectric wavelength" may also refer to the dielectric wavelength corresponding to the non-center frequency of the resonant frequency or the working frequency band. For ease of understanding, the dielectric wavelength mentioned in the embodiments of the present application can be simply calculated by the relative dielectric constant of the medium filled on one or more sides of the radiator.

[0171] Length: refers to the physical length or measured length. It should be understood that the "length" mentioned in the embodiments of the present application is different from the "electrical length". Among them, the "length of the radiator" should be understood to be equivalent to the "physical length of the radiator", and the length of other structures in the embodiments of the present application should be understood in the same way.

[0172] Those skilled in the art can understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between efficiency and dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0173] Antenna pattern: also called radiation pattern. It refers to the graph of the relative field strength (normalized modulus) of the antenna radiation field changing with direction at a certain distance from the antenna (far field). It is usually represented by two mutually perpendicular plane patterns in the direction of maximum radiation of the antenna.

[0174] Antenna radiation patterns usually have multiple radiation beams. The radiation beam with the strongest radiation intensity is called the main lobe, and the remaining radiation beams are called side lobes or side lobes. Among the side lobes, the side lobe in the opposite direction of the main lobe is also called the back lobe.

[0175] Directivity: Also known as the directivity of an antenna. It refers to the ratio of the maximum power density to the average value on the antenna pattern at a certain distance from the antenna (far field), which is a dimensionless ratio greater than or equal to 1. It can be used to indicate the energy radiation characteristics of an antenna. The larger the directivity, the more energy the antenna radiates in a certain direction, and the more concentrated the energy radiation.

[0176] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0177] Antenna radiation efficiency: refers to the ratio of the power radiated by the antenna into space (i.e. the power of the electromagnetic wave part that is effectively converted) to the active power input to the antenna. Among them, the active power input to the antenna = the input power of the antenna - the loss power; the loss power mainly includes the return loss power and the ohmic loss power of the metal and / or the dielectric loss power. The radiation efficiency is a value that measures the radiation ability of the antenna. Metal loss and dielectric loss are both factors that affect the radiation efficiency.

[0178] Those skilled in the art can understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between efficiency and dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0179] Antenna return loss: It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the transmit power of the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the greater the radiation efficiency of the antenna. The larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the radiation efficiency of the antenna.

[0180] Antenna return loss can be represented by the S11 parameter, which is one of the S parameters. S11 represents the reflection coefficient, which can characterize the antenna transmission efficiency. The S11 parameter is usually a negative number. The smaller the S11 parameter is, the smaller the antenna return loss is, and the less energy is reflected back by the antenna itself, which means that more energy actually enters the antenna, and the higher the antenna system efficiency is; the larger the S11 parameter is, the greater the antenna return loss is, and the lower the antenna system efficiency is.

[0181] It should be noted that in engineering, the S11 value is generally -6dB as the standard. When the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or that the antenna has good transmission efficiency.

[0182] It is understood that, in the embodiments of the present application, the first frequency band and the second frequency band being the same (also referred to as co-frequency) can be understood as any one of the following situations:

[0183] The first frequency band and the second frequency band include the same communication frequency band. In one embodiment, the first frequency band and the second frequency band can be applied to a MIMO antenna system. For example, the first frequency band and the second frequency band both include a sub-6G frequency band in 5G, and the first frequency band and the second frequency band can be considered to be the same frequency.

[0184] There is at least partial frequency overlap between the first frequency band and the second frequency band. For example, the first frequency band includes B35 (1.85-1.91 GHz) in LTE, and the second frequency band includes B39 (1.88-1.92 GHz) in LTE. The frequency of the first frequency band and the frequency of the second frequency band partially overlap, so it can be considered that the first frequency band and the second frequency band are the same frequency.

[0185] It should be understood that the first frequency band and the second frequency band mentioned in the embodiments of the present application are adjacent to each other, which can be understood as:

[0186] In the first frequency band and the second frequency band, the spacing between the starting frequency point of the higher frequency band and the ending frequency point of the lower frequency band is less than 10% of the center frequency of the higher frequency band (or, the spacing is less than or equal to 200MHz). For example, the first frequency band includes B3 (1.71-1.785GHz) in LTE, and the second frequency band includes L1 (1578.42±1.023MHz) in GPS. B3 (1.71-1.785GHz) and L1 (1578.42±1.023MHz) are adjacent frequency bands, so the first frequency band and the second frequency band can be considered to be adjacent. Or for example, the first frequency band includes B40 (2.3-2.4GHz) or B41 (2.496-2.69GHz) in LTE, and the second frequency band includes the WiFi / BT band (2.4-2.485GHz). B40 (2.3-2.4GHz) or B41 (2.496-2.69GHz) and the WiFi / BT band (2.4-2.485GHz) are adjacent frequency bands, then the first frequency band and the second frequency band can be considered to be adjacent.

[0187] Ground (GND): can refer to at least a part of any grounding layer, grounding plate, or grounding metal layer in an electronic device (such as a mobile phone), or at least a part of any combination of any of the above grounding layers, grounding plates, or grounding components, etc. "GND" can be used for grounding components in electronic devices. In one embodiment, "ground" can be a grounding layer of a circuit board of an electronic device, or a grounding plate formed by a frame of an electronic device, or a grounding metal layer formed by a metal film under a screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12 to 14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a routing layer, and the routing layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. can be mounted on or connected to a circuit board; or electrically connected to a wiring layer and / or a ground layer in the circuit board. For example, a radio frequency source is disposed on the wiring layer.

[0188] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material can be any of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. It will be appreciated by those skilled in the art that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0189] Grounding: refers to coupling with the ground / floor in any way. In one embodiment, grounding can be achieved through direct grounding, such as physical grounding (or physical ground) at a specific position on the frame through some structural members of the middle frame. In one embodiment, grounding can be achieved through device grounding, such as grounding through devices such as capacitors / inductors / resistors connected in series or in parallel (or device ground).

[0190] The technical solution of the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0191] like Figure 1As shown, the electronic device 10 may include: a cover 13, a display screen / module (display) 15, a printed circuit board (PCB) 17, a middle frame (middle frame) 19 and a rear cover (rear cover) 21. It should be understood that in some embodiments, the cover 13 may be a glass cover, or may be replaced by a cover made of other materials, such as a PET (Polyethylene terephthalate) material cover.

[0192] The cover plate 13 may be disposed closely to the display module 15 , and may be mainly used to protect the display module 15 and prevent dust.

[0193] In one embodiment, the display module 15 may include a liquid crystal display panel (LCD), a light emitting diode (LED) display panel or an organic light emitting semiconductor (OLED) display panel, etc., but the embodiment of the present application does not limit this.

[0194] The middle frame 19 mainly supports the entire device. Figure 1It is shown that PCB17 is arranged between the middle frame 19 and the back cover 21. It should be understood that in one embodiment, PCB17 can also be arranged between the middle frame 19 and the display module 15, and the embodiment of the present application does not limit this. Among them, the printed circuit board PCB17 can adopt a flame retardant material (FR-4) dielectric board, a Rogers dielectric board, a mixed dielectric board of Rogers and FR-4, and so on. Here, FR-4 is a code for a grade of flame retardant material, and the Rogers dielectric board is a high-frequency board. Electronic components, such as radio frequency chips, etc. are carried on PCB17. In one embodiment, a metal layer can be provided on the printed circuit board PCB17. The metal layer can be used for grounding the electronic components carried on the printed circuit board PCB17, and can also be used for grounding other components, such as bracket antennas, frame antennas, etc. The metal layer can be called a floor, a grounding plate, or a grounding layer. In one embodiment, the metal layer can be formed by etching metal on the surface of any layer of the dielectric board in PCB17. In one embodiment, the metal layer for grounding can be provided on the side of the printed circuit board PCB17 close to the middle frame 19. In one embodiment, the edge of the printed circuit board PCB17 can be regarded as the edge of its grounding layer. In one embodiment, the metal middle frame 19 can also be used for grounding the above components. The electronic device 10 can also have other floors / grounding plates / grounding layers, as described above, which will not be repeated here.

[0195] The electronic device 10 may further include a battery (not shown). The battery may be disposed between the middle frame 19 and the back cover 21, or between the middle frame 19 and the display module 15, and the embodiment of the present application does not limit this. In some embodiments, the PCB 17 is divided into a main board and a sub-board, and the battery may be disposed between the main board and the sub-board, wherein the main board may be disposed between the middle frame 19 and the upper edge of the battery, and the sub-board may be disposed between the middle frame 19 and the lower edge of the battery.

[0196] The electronic device 10 may further include a frame 11, which may be formed of a conductive material such as metal. The frame 11 may be disposed between the display module 15 and the back cover 21 and extend circumferentially around the periphery of the electronic device 10. The frame 11 may have four sides surrounding the display module 15 to help fix the display module 15. In one implementation, the frame 11 made of a metal material may be directly used as a metal frame of the electronic device 10, forming the appearance of a metal frame, which is suitable for a metal industrial design (industrial design, ID). In another implementation, the outer surface of the frame 11 may also be a non-metallic material, such as a plastic frame, forming the appearance of a non-metallic frame, which is suitable for a non-metallic ID.

[0197] The middle frame 19 may include a border 11. The middle frame 19 including the border 11 is an integral part, which can support the electronic devices in the whole machine. The cover plate 13 and the back cover 21 are respectively covered along the upper and lower edges of the border to form a shell or housing (housing) of the electronic device. In one embodiment, the cover plate 13, the back cover 21, the border 11 and / or the middle frame 19 can be collectively referred to as the shell or housing of the electronic device 10. It should be understood that "shell or housing" can be used to refer to part or all of any one of the cover plate 13, the back cover 21, the border 11 or the middle frame 19, or to refer to part or all of any combination of the cover plate 13, the back cover 21, the border 11 or the middle frame 19.

[0198] The frame 11 on the middle frame 19 can at least partially serve as an antenna radiator to receive / transmit radio frequency signals. There can be a gap between this portion of the frame serving as the radiator and other portions of the middle frame 19, thereby ensuring that the antenna radiator has a good radiation environment. In one embodiment, the middle frame 19 can be provided with an aperture at this portion of the frame serving as the radiator to facilitate antenna radiation.

[0199] Alternatively, the frame 11 may not be considered as a part of the middle frame 19. In one embodiment, the frame 11 may be connected to the middle frame 19 and formed integrally. In another embodiment, the frame 11 may include a protrusion extending inward to be connected to the middle frame 19, for example, by means of a shrapnel, a screw, welding, etc. The protrusion of the frame 11 may also be used to receive a feed signal, so that at least a portion of the frame 11 serves as a radiator of the antenna to receive / transmit radio frequency signals. There may be a gap 42 between this portion of the frame that serves as a radiator and the middle frame 19, thereby ensuring that the antenna radiator has a good radiation environment, so that the antenna has a good signal transmission function.

[0200] The back cover 21 may be a back cover made of metal material; or a back cover made of non-conductive material, such as a glass back cover, a plastic back cover, or a back cover made of both conductive and non-conductive materials. In one embodiment, the back cover 21 made of conductive material may replace the middle frame 19 and be integrated with the frame 11 to support the electronic components in the whole device.

[0201] It should be understood that there may be an insulating gap on the frame 11. For example, the open end of the antenna radiator may be formed by the insulating gap, so that the antenna radiator serves as a frame antenna. When the frame 11 is formed of a conductive material such as metal, the insulating gap may be understood as a gap opened in the frame 11 filled with a non-metallic material (insulating material), and the gap is visible on the exterior surface of the frame. When the outer surface of the frame 11 is a non-conductive material, the insulating gap may be understood as a gap between the conductor parts in the frame 11, and the gap may be filled with a non-metallic material (insulating material), or may not be filled with a non-metallic material but filled with air, and the gap is not visible on the exterior surface of the frame.

[0202] In one embodiment, the middle frame 19 and / or the conductive parts in the back cover 21 can be used as the reference ground of the electronic device 10, wherein the frame 11, PCB 17, etc. of the electronic device can be grounded through electrical connection with the middle frame.

[0203] The antenna of the electronic device 10 can also be arranged in the frame 11. When the frame 11 of the electronic device 10 is a non-conductive material, the antenna radiator can be located in the electronic device 10 and arranged along the frame 11. For example, the antenna radiator is arranged close to the frame 11 to minimize the volume occupied by the antenna radiator and to be closer to the outside of the electronic device 10 to achieve better signal transmission effect. It should be noted that the antenna radiator is arranged close to the frame 11 means that the antenna radiator can be arranged close to the frame 11, or it can be arranged close to the frame 11, for example, there can be a certain small gap between the antenna radiator and the frame 11.

[0204] The antenna of the electronic device 10 may also be disposed in the housing, such as a bracket antenna, a millimeter wave antenna, etc. ( Figure 1 ). The clearance of the antenna disposed in the housing can be obtained by the slits / openings on any one of the middle frame, and / or the frame, and / or the back cover, and / or the display screen, or by the non-conductive gap / aperture formed between any of them. The clearance setting of the antenna can ensure the radiation characteristics of the antenna. It should be understood that the clearance of the antenna can be a non-conductive area formed by any conductive components in the electronic device 10, and the antenna radiates signals to the external space through the non-conductive area. In one embodiment, the antenna 40 can be in the form of an antenna based on a flexible printed circuit (FPC), an antenna based on laser direct structuring (LDS), or a microstrip disk antenna (MDA). In one embodiment, the antenna can also be a transparent structure embedded in the screen of the electronic device 10, so that the antenna is a transparent antenna unit embedded in the screen of the electronic device 10.

[0205] Figure 1 Only some components of the electronic device 10 are schematically shown, and the actual shapes, sizes and structures of these components are not subject to the present invention. Figure 1 limited.

[0206] It should be understood that in the embodiments of the present application, the surface where the display screen of the electronic device is located can be considered as the front side, the surface where the back cover is located can be considered as the back side, and the surface where the frame is located can be considered as the side side.

[0207] It should be understood that in the embodiments of the present application, when the user is holding the electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side. It should be understood that in the embodiments of the present application, when the user is holding the electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side.

[0208] First, by Figures 2 to 5 To introduce this application, four antenna modes will be involved. Among them, Figure 2 This is a schematic diagram of the common mode structure of an antenna provided in the present application and the corresponding current and electric field distribution. Figure 3 This is a schematic diagram of the structure of the differential mode of another antenna provided in the present application and the corresponding current and electric field distribution. Figure 2 and Figure 3 The antenna radiator is open at both ends, and its common mode mode and differential mode can be called line common mode mode and line differential mode mode respectively. Figure 4 This is a schematic diagram of the common mode structure of an antenna provided in the present application and the corresponding distribution of current, electric field and magnetic current. Figure 5 It is a schematic diagram of the structure of the differential mode of another antenna provided in the present application and the corresponding distribution of current, electric field and magnetic current. Figure 4 and Figure 5 Both ends of the antenna radiator are grounded, and its common mode mode and differential mode can be called slot common mode mode and slot differential mode mode, respectively.

[0209] It should be understood that the "common mode mode" or "CM mode" in this application includes a line common mode mode and a slot common mode mode, and the "differential mode mode" or "DM mode" in this application includes a line differential mode mode and a slot differential mode mode, which can be specifically determined according to the structure of the antenna.

[0210] It should be understood that the "common-differential mode" or "CM-DM mode" in this application refers to the line common mode mode and the line differential mode mode generated on the same radiator, or refers to the slot common mode mode and the slot differential mode mode generated on the same radiator, which can be specifically determined according to the structure of the antenna.

[0211] 1. Common mode (CM) mode

[0212] Figure 2 (a) in the figure shows that the radiator of the antenna 40 is open at both ends and connected to a feeding circuit (not shown) at the middle position 41. In one embodiment, the feeding form of the antenna 40 adopts symmetrical feed. The feeding circuit can be connected to the middle position 41 of the antenna 40 through a feeding line 42. It should be understood that symmetrical feeding can be understood as one end of the feeding circuit is connected to the radiator and the other end is grounded, wherein the connection point between the feeding circuit and the radiator (feeding point) is located at the center of the radiator, and the center of the radiator can be, for example, the midpoint of the geometric structure, or the midpoint of the electrical length (or an area within a certain range near the above midpoint).

[0213] The middle position 41 of the antenna 40 may be, for example, the geometric center of the antenna, or the midpoint of the electrical length of the radiator. For example, the connection between the feed line 42 and the antenna 40 covers the middle position 41 .

[0214] Figure 2 (b) in FIG. 4 shows the current and electric field distribution of the antenna 40. Figure 2 As shown in (b), the current is distributed in opposite directions on both sides of the middle position 41, for example, symmetrically; the electric field is distributed in the same direction on both sides of the middle position 41. Figure 2 As shown in (b) in FIG. 4 , the current at the feeder 42 is distributed in the same direction. Based on the current distribution in the feeder 42, Figure 2 The feeding shown in (a) in FIG. 4 is called line CM feeding. Based on the reverse distribution of the current on both sides of the connection between the radiator and the feeding line 42, Figure 2 The antenna mode shown in (b) in the figure can be called a linear CM mode (it can also be simply referred to as a CM mode. For example, for a linear antenna, the CM mode refers to a linear CM mode). Figure 2 The current and electric field shown in (b) can be called the current and electric field of the line CM mode, respectively.

[0215] The current is stronger at the middle position 41 of the antenna 40 (the current is stronger near the middle position 41 of the antenna 40), and weaker at both ends of the antenna 40, such as Figure 2 As shown in (b) in FIG. 4 , the electric field is weak at the middle position 41 of the antenna 40 and is strong at both ends of the antenna 40 .

[0216] 2. Line differential mode (DM) mode

[0217] like Figure 3(a) in the figure shows that the left and right ends of the two radiators of the antenna 50 are open ends, and the feeding circuit is connected at the middle position 51. In one embodiment, the feeding form of the antenna 50 adopts anti-symmetrical feed. One end of the feeding circuit is connected to one of the radiators through the feeding line 52, and the other end of the feeding circuit is connected to the other radiator through the feeding line 52. The middle position 51 can be the geometric center of the antenna 50, or the gap formed between the radiators.

[0218] It should be understood that the "center antisymmetric feeding" mentioned in this application can be understood as that the positive and negative poles of the feeding unit are respectively connected to two connection points near the above-mentioned midpoint of the radiator. In one embodiment, the positive and negative poles of the feeding unit output signals with the same amplitude and opposite phases, for example, the phase difference is 180°±10°.

[0219] Figure 3 (b) in FIG. 5 shows the current and electric field distribution of the antenna 50. Figure 3 As shown in (b) of FIG. 5 , the current is distributed in the same direction on both sides of the middle position 51 of the antenna 50, for example, in an anti-symmetrical distribution; and the electric field is distributed in opposite directions on both sides of the middle position 51. Figure 3 As shown in (b) in FIG. 5 , the current at the feeder 52 presents a reverse distribution. Based on the reverse distribution of the current at the feeder 52, Figure 3 The feeding shown in (a) in FIG. 5 is called line DM feeding. Based on the fact that the current is distributed in the same direction on both sides of the connection between the radiator and the feeding line 52, Figure 3 The antenna mode shown in (b) can be called a linear DM mode (can also be simply referred to as a DM mode. For example, for a linear antenna, the DM mode refers to a linear DM mode). Figure 3 The current and electric field shown in (b) can be called the current and electric field of the line DM mode, respectively.

[0220] The current is stronger at the middle position 51 of the antenna 50 (the current is stronger near the middle position 51 of the antenna 50), and weaker at both ends of the antenna 50, such as Figure 3 As shown in (b) in FIG. 5 , the electric field is weak at the middle position 51 of the antenna 50 and is strong at both ends of the linear antenna 50 .

[0221] It should be understood that the antenna radiator can be understood as a metal structure that generates radiation, and the number of the metal structure can be one, such as Figure 2 As shown, or, it can be two pieces, such as Figure 3 As shown, it can be adjusted according to actual design or production needs. For example, for the line CM mode, it can also be Figure 3As shown in the figure, two radiators are used, and the two ends of the two radiators are arranged opposite to each other and separated by a gap. A symmetrical feeding method is adopted at the two ends close to each other. For example, the same feed source signal is fed into the two ends close to each other, and the same Figure 2 The antenna structure shown in FIG. 1 has a similar effect. Correspondingly, for the line DM mode, it can also be Figure 2 As shown in the figure, a radiator is used, two feeding points are set at the middle position of the radiator and an antisymmetric feeding method is adopted. For example, if two symmetrical feeding points on the radiator are fed with signals with the same amplitude and opposite phases respectively, the same power supply as in the embodiment of the present invention can be obtained. Figure 3 The antenna structure shown has a similar effect.

[0222] 3. Line CM-DM mode

[0223] Above Figure 2 and Figure 3 The figures show the line CM mode and line DM mode respectively generated by using different feeding methods when both ends of the radiator are open.

[0224] When the antenna is fed in an asymmetric way (the feeding point is offset from the middle of the radiator, including side feeding or offset feeding), or the grounding point of the radiator (where it is coupled with the floor) is asymmetric (the grounding point is offset from the middle of the radiator), the antenna can simultaneously generate the first resonance and the second resonance, corresponding to the line CM mode and the line DM mode, respectively. For example, the first resonance corresponds to the line CM mode, and the current and electric field distribution are as follows: Figure 2 The second resonance corresponds to the line DM mode, and the current and electric field distribution are shown in (b). Figure 3 As shown in (b) in .

[0225] 4. Slot CM mode

[0226] Figure 4 The radiator of the antenna 60 shown in (a) has a hollow slot or gap 61, or the radiator of the antenna 60 and the ground (for example, the floor, which can be a PCB) enclose the slot or slot 61. The slot 61 can be formed by grooving the floor. An opening 62 is provided on one side of the slot 61, and the opening 62 can be specifically opened in the middle position of the side. The middle position of the side of the slot 61 can be, for example, the geometric midpoint of the antenna 60, or the midpoint of the electrical length of the radiator, for example, the area where the opening 62 is opened on the radiator covers the middle position of the side. The opening 62 can be connected to the feeding circuit, and antisymmetric feeding can be used. It should be understood that antisymmetric feeding can be understood as the positive and negative poles of the feeding circuit are respectively connected to the two ends of the radiator. The signals output by the positive and negative poles of the feeding circuit have the same amplitude and opposite phases, for example, the phase difference is 180°±10°.

[0227] Figure 4(b) in FIG. 6 shows the current, electric field, and magnetic current distribution of the antenna 60. Figure 4 As shown in (b) of FIG. 1 , the current on the conductor (such as the floor, and / or the radiator 60) around the slot 61 is distributed in the same direction around the slot 61, the electric field is distributed in opposite directions on both sides of the middle position of the slot 61, and the magnetic current is distributed in opposite directions on both sides of the middle position of the slot 61. Figure 4 As shown in (b), the electric field at the opening 62 (e.g., the feeding point) is in the same direction, and the magnetic current at the opening 62 (e.g., the feeding point) is in the same direction. Based on the same direction of the magnetic current at the opening 62 (the feeding point), Figure 4 The feeding shown in (a) of FIG. 6 is referred to as slot CM feeding. Based on the current being distributed in the same direction (e.g., anti-symmetric distribution) on the radiators on both sides of the opening 62, or based on the current being distributed in the same direction around the slot 61 on the conductors around the slot 61, Figure 4 The antenna mode shown in (b) can be called a slot CM mode (also referred to as a CM mode for short. For example, for a slot antenna, the CM mode refers to a slot CM mode). Figure 4 The electric field, current, and magnetic current distributions shown in (b) can be called the electric field, current, and magnetic current of the slot CM mode.

[0228] The magnetic field is weak in the middle of the antenna 60 and strong at both ends of the antenna 60. The electric field is strong in the middle of the antenna 60 (the largest point of the electric field is located near the middle of the antenna 60) and weak at both ends of the antenna 60, such as Figure 4 As shown in (b) in .

[0229] 5. Slot DM mode

[0230] like Figure 5 The radiator of the antenna 70 shown in (a) has a hollow slot or gap 72, or the radiator of the antenna 70 and the ground (for example, the floor, which can be a PCB) enclose the slot or slot 72. The slot 72 can be formed by making a slot on the floor. The middle position 71 of the slot 72 is connected to the feeding circuit, and symmetrical feeding is adopted. It should be understood that symmetrical feeding can be understood as one end of the feeding circuit is connected to the radiator and the other end is grounded, wherein the connection point between the feeding circuit and the radiator (feeding point) is located at the center of the radiator, and the center of the radiator can be, for example, the midpoint of the geometric structure, or the midpoint of the electrical length (or an area within a certain range near the above midpoint). The middle position of one side of the slot 72 is connected to the positive pole of the feeding circuit, and the middle position of the other side of the slot 72 is connected to the negative pole of the feeding circuit. The middle position of the side of the slot 72 can be, for example, the middle position of the slot antenna 60 / the middle position of the ground, such as the geometric midpoint of the slot antenna, or the midpoint of the electrical length of the radiator, such as the connection between the feeding circuit and the radiator covering the middle position 51 of the side.

[0231] Figure 5(b) in FIG. 7 shows the current, electric field, and magnetic current distribution of the antenna 70. Figure 5 As shown in (b) of FIG. 1 , on the conductor (such as the floor, and / or the radiator 60) around the slot 72, the current is distributed around the slot 72, and is distributed in opposite directions on both sides of the middle position of the slot 72, the electric field is distributed in the same direction on both sides of the middle position 71, and the magnetic current is distributed in the same direction on both sides of the middle position 71. The magnetic current at the feeding circuit is distributed in opposite directions (not shown). Based on the magnetic current at the feeding circuit being distributed in opposite directions, Figure 5 The feeding shown in (a) in FIG. 1 may be referred to as slot DM feeding. Based on the reverse distribution (e.g., symmetrical distribution) of the current on both sides of the connection between the feeding circuit and the radiator, or based on the reverse distribution (e.g., symmetrical distribution) of the current around the slot 71, Figure 5 The antenna mode shown in (b) can be called a slot DM mode (can also be referred to as a DM mode for short, for example, for a slot antenna, the DM mode refers to a slot DM mode). Figure 5 The distribution of electric field, current and magnetic current shown in (b) can be called the electric field, current and magnetic current of the slot DM mode.

[0232] The current is weaker in the middle of the antenna 70 and stronger at both ends of the antenna 70. The electric field is stronger in the middle of the antenna 70 (the largest point of the electric field is located near the middle of the antenna 60) and weaker at both ends of the slot antenna 70, such as Figure 5 As shown in (b) in .

[0233] It should be understood that the radiator of the antenna can be understood as a metal structure that generates radiation (for example, a part of the floor), which may include an opening, such as Figure 4 As shown, or, it can also be a complete ring, such as Figure 5 As shown, it can be adjusted according to actual design or production needs. For example, for the slot CM mode, it can also be Figure 5 As shown in the figure, a complete annular radiator is used, two feeding points are set at the middle position of the radiator on one side of the slot 61, and an anti-symmetric feeding method is adopted. For example, signals with the same amplitude and opposite phases are fed into the two ends of the original opening position, and the same Figure 4 The antenna structure shown in FIG. 1 has a similar effect. Correspondingly, for the slot DM mode, it can also be Figure 4 The radiator with an opening is shown in the figure, and a symmetrical feeding method is adopted at both ends of the opening. For example, the same feed source signal is fed into both ends of the radiator on both sides of the opening, and the same Figure 5 The antenna structure shown has a similar effect.

[0234] 6. Slot CM-DM mode.

[0235] Above Figure 4 and Figure 5It is shown that the slot structure uses different feeding methods to generate slot CM mode and slot DM mode respectively.

[0236] When the antenna is fed in an asymmetric way (the feeding point deviates from the middle position, including side feeding or offset feeding), or the opening of one side of the slot is asymmetric (the opening deviates from the middle position of the side), the antenna can simultaneously generate the first resonance and the second resonance, corresponding to the slot CM mode and the slot DM mode, respectively. For example, the first resonance corresponds to the slot CM mode, and the current, electric field, and magnetic current distribution are as follows: Figure 4 The second resonance corresponds to the slot DM mode, and the current, electric field, and magnetic current distribution are shown in (b). Figure 5 As shown in (b) in .

[0237] Since the above antenna structures can generate two working modes (the electric field is symmetrically distributed or antisymmetrically distributed) in which the electric field is orthogonal (the product of the electric field in the far field is zero (integrated orthogonal)), the isolation between the two working modes of this antenna structure is good, and it can be applied to multi-input multi-output (MIMO) antenna systems in electronic devices.

[0238] At the same time, when the two antenna structures respectively operate in two working modes (the electric field is symmetrically distributed or antisymmetrically distributed) in which the electric field is orthogonal (the product of the electric field in the far field is zero (integrated orthogonal)), there is also good isolation between the two antenna structures, and they can be used as sub-units in the MIMO antenna system in electronic devices.

[0239] It should be understood that the two antenna structures can be understood as antenna structures into which signals are fed by the first feeding circuit and the second feeding circuit respectively. The first feeding circuit and the second feeding circuit are different. In the electronic device, the first feeding circuit and the second feeding circuit can be different radio frequency channels in a radio frequency chip (RF IC).

[0240] Figure 6 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0241] like Figure 6 As shown, electronic device 10 may include antenna 100 .

[0242] The conductive frame 11 of the electronic device 10 may include a first position 101 and a second position 102. The frame 11 is coupled to the floor at the first position 101 and the second position 102, and a gap is provided between the first position and the second position. The radiator 105 of the antenna 100 is a conductive portion between the first position 101 and the second position 102.

[0243] The antenna 100 may further include a feeding circuit and an electronic component. The radiator 105 may include a first connection point and a second connection point. The first connection point is located between the first position 101 and the gap, and the second connection point is located between the second position 102 and the gap. The feeding circuit is coupled to the first connection point. The first end of the electronic component is coupled to the second connection point, and the second end is coupled to the floor.

[0244] When the feeding circuit feeds an electrical signal, the antenna 100 can operate in the slot CM-DM mode. The resonances generated by the slot CM mode and the slot DM mode can be brought close together by electronic components to form a resonant frequency band to expand the working bandwidth of the antenna 100. In one embodiment, the electronic components can shift the frequency of the resonance generated by the slot DM to a low frequency.

[0245] Figure 7 and Figure 8 yes Figure 6 The simulation results of the antenna 200 in the electronic device 10 are shown. Figure 7 yes Figure 6 The S-parameter simulation results of the antenna 100 in the electronic device 10 are shown. Figure 8 yes Figure 6 The simulation results of system efficiency and radiation efficiency of the antenna 100 in the electronic device 10 are shown.

[0246] like Figure 7 As shown, the antenna 100 may generate resonances near 1.7 GHz and near 2 GHz, wherein the resonance generated near 1.7 GHz may correspond to the slot CM mode, and the resonance generated near 2 GHz may correspond to the slot DM mode.

[0247] like Figure 8 As shown, when the antenna 100 works in the slot CM mode, there are multiple current modes on the floor, and the slot DM mode is mainly radiated by the radiator, so the radiation efficiency of the slot CM mode is higher than that of the slot DM mode. When the resonance generated by the slot CM mode and the slot DM mode is used to expand the working bandwidth of the antenna 100, due to the low radiation efficiency of the slot DM mode, a pit will be generated near the resonance generated by the slot DM mode, resulting in a narrow bandwidth of the system efficiency (taking the system efficiency>-2dB as an example), which is only 400MHz.

[0248] The embodiment of the present application provides an antenna structure and an electronic device thereof. The antenna structure uses the conductive part of the frame as a radiator. The radiator is fed with an electrical signal by indirect coupling, and the feeder and the radiator are used to generate a first resonance and a second resonance. The two resonances can be used to form a resonant frequency band to expand the bandwidth, and in the resonant frequency band, it has good radiation efficiency and system efficiency.

[0249] Fig. 9It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0250] like Fig. 9 As shown, the electronic device 10 includes a frame 11 , an antenna 200 and a floor 300 .

[0251] At least a portion of the frame 11 is spaced apart from the floor 300. The frame 11 includes a first position 201 and a second position 202. The frame 11 is coupled to the floor 300 at the first position 201 and the second position 202. The frame 11 defines a first gap between the first position 201 and the second position 202. In one embodiment, the first gap is located in a central area between the first position 201 and the second position 202.

[0252] It should be understood that the central area can be understood as an area within 5 mm from the center, and the physical length between the center and the first position 201 is the same as the physical length between the center and the second position 202, or the electrical length between the center and the first position 201 is the same as the electrical length between the center and the second position 202. For the sake of simplicity, the central area described in the embodiments of the present application can be understood accordingly.

[0253] At the same time, for the sake of simplicity in the discussion, the coupling connection in the embodiments of the present application is explained by taking direct coupling (electrical connection) as an example. In actual production or design, it can also be achieved through indirect coupling.

[0254] In one embodiment, the first position 201 and the second position 202 are coupled with the floor 300 to realize the grounding of the radiator. Among them, the frame 11 can be directly electrically connected to the floor 300 through a spring at the first position 201 and the second position 202, or can be electrically connected to the floor 300 through an inductor, or can be electrically connected to the floor 300 through a structural member of the middle frame (for example, a connecting rib). The electrical connection with the floor 300 through the structural member of the middle frame can be understood as at least a part of the frame 11 and the floor 300 being an integrated structure.

[0255] In one embodiment, the first position 201 and the second position 202 can be electrically connected to the floor 300 through a grounding member (eg, spring, connecting rib). The width of the grounding member connected to the frame 11 is greater than or equal to 1 mm and less than or equal to 10 mm.

[0256] In one embodiment, the frame 11 has a first gap between the first position 201 and the second position 202 to realize an opening / open end on the radiator. Wherein, any side of the first gap can be spaced apart from the floor 300, or can be coupled to the floor 300 through a capacitor.

[0257] The antenna 200 includes a radiator 210 and a feeder 221. The radiator 210 and the feeder 221 are arranged at intervals, and the radiator 210 and the feeder 221 at least partially overlap along a first direction, and the first direction is perpendicular to the extension direction of the radiator 210 (for example, the y direction). In one embodiment, the extension direction of the radiator 210 is in the same direction as the extension direction of the feeder 221. The radiator 210 is a conductive portion of the frame 11 between the first position 201 and the second position 202. The first end and the second end of the radiator 210 are grounded ends, wherein the first end and the second end of the radiator 210 correspond to the first position 201 and the second position 202 of the frame 11, respectively. The first end and the second end of the feeder 221 are open ends.

[0258] The extension direction of the radiator 210 and the extension direction of the feeding element 221 being in the same direction can be understood as an angle between the extension direction of the radiator 210 and the extension direction of the feeding element 221 being less than or equal to a first threshold, for example, less than or equal to 10°.

[0259] It should be understood that in the embodiment of the present application, the open end can be understood as being spaced from the floor 300 or coupled to the floor 300 through a capacitor. In the embodiment of the present application, the grounded end can be understood as being directly electrically connected to the floor 300 or coupled to the floor 300 through an inductor. The capacitor or inductor described in the embodiment of the present application can be understood as a capacitive electronic component or an inductive electronic component. For the sake of simplicity, they will not be described one by one. Among them, direct electrical connection with the floor 300 can be understood as only having a connecting component (for example, a spring, a metal connecting rib, etc.) between the floor 300 and the floor 300, and no electronic components (for example, capacitors, inductors, switches, etc.) are provided. For example, the grounding structure can be milled out on the electronic device through a process.

[0260] In the above embodiment, both the open end and the ground end can be coupled with the floor 300 through electronic components. The difference is that the coupling with the floor 300 through the electronic components does not change the original electric field or current characteristics. At the open end, the electronic components are coupled with the floor 300, and there is still a strong electric field near the open end. Correspondingly, the current in this area is weak. At the ground end, the electronic components are coupled with the floor 300, and there is still a strong current near the ground end. Correspondingly, the electric field in this area is weak.

[0261] It should be understood that the extension direction of the radiator 210 can be understood as the extension direction of the frame where the first position 201 or the second position 202 is located. For example, the first position 201 and the second position 202 are both located at the first side of the frame, and the extension direction of the radiator 210 is the extension direction of the first side (for example, the x direction). Alternatively, the first position 201 and the second position 202 are respectively located at the first side and the second side of the frame that intersect at an angle, and the extension direction of the radiator 210 includes the extension direction of the first side (for example, the x direction), and the extension direction of the second side (for example, the y direction), and the radiator 210 and the feeder 221 at least partially overlap in the vertical direction of any direction of the extension direction of the radiator 210.

[0262] Meanwhile, the radiator 210 and the feeder 221 are spaced apart, which can be understood as the radiator 210 and the feeder 221 are not directly connected and form a gap. In the embodiment of the present application, the spaced apart setting can be understood accordingly. The radiator 210 and the feeder 221 are coupled through the gap.

[0263] The antenna 200 further includes a feeding circuit 231, the feeding element 221 includes a feeding point 211, and the feeding circuit 231 is coupled to the feeding point 211. In one embodiment, the distance between the feeding point 211 and the end of the first end of the feeding element 221 is less than one third of the length of the feeding element 221. It should be understood that by adjusting the position of the feeding point 211, the radiation characteristics of the antenna 200, for example, the resonance point frequency, can be adjusted.

[0264] The feeder 221 and the radiator 210 are used to generate a first resonance and a second resonance. In one embodiment, the first resonance and the second resonance are used to jointly support a first operating frequency band of the electronic device 10. The feeder circuit 231 can be used to feed an electrical signal of the first operating frequency band.

[0265] The first working frequency band of the electronic device 10 includes a frequency range, such as a low frequency band (LB) (698MHz-960MHz), a middle frequency band (MB) (1710MHz-2170MHz) or a high frequency band (HB) (2300MHz-2690MHz) in a cellular network. Taking a working frequency band of the electronic device 10 as LB (698MHz-960MHz) as an example, the working frequency band may include multiple communication frequency bands within the frequency range, such as B5, B8, etc., which can be understood accordingly in the embodiments of the present application.

[0266] It should be understood that in the technical solution provided in the embodiment of the present application, the radiator 210 can form a radiator structure that conforms to the slot antenna. When the feeding circuit 231 feeds an electrical signal, the antenna 200 can generate the above-mentioned first resonance and second resonance by the radiator 210 and the feeder 221. In the electronic device 10, compared with the radiator 210 (the conductive part in the frame 11 is used as the radiator 210), the radiation environment of the feeder 221 is poor (for example, the clearance is poor and the distance to the adjacent metal parts is close). However, the feeder 221 can generate a new current path for the radiator 210, thereby generating a new resonance (for example, a second resonance) to expand the working bandwidth of the antenna 200.

[0267] At the same time, since the first end and the second end of the radiator 210 are grounded ends, the radiator 210 has a stronger current and a weaker electric field in the vicinity of the first end and the second end. The first end and the second end of the feeder 221 are open ends, and the feeder 221 has a weaker current and a stronger electric field in the vicinity of the first end and the second end. The area of ​​the radiator 210 with a weaker electric field (stronger magnetic field) is close to the area of ​​the feeder 221 with a stronger electric field (stronger magnetic field), so that the first resonance and the second resonance can be more balanced, and no radiation efficiency pit will be generated in the first working frequency band jointly supported by the first resonance and the second resonance, thereby improving the radiation characteristics of the antenna 200 and enabling the electronic device 10 to have better communication performance.

[0268] In one embodiment, the first resonance and the second resonance can be close to each other so that the first resonance and the second resonance are used to jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the first resonance and the second resonance is in the range of 5% to 20% of the low frequency resonance frequency or the high frequency resonance frequency (greater than or equal to 5%, and less than or equal to 20%). In one embodiment, in the low frequency band (less than or equal to 1 GHz, for example, 698 MHz-960 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 50 MHz and less than or equal to 160 MHz. In the medium frequency band (in the range of 1 GHz-2 GHz, for example, 1710 MHz-2170 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high frequency band (within the range of 2 GHz-3 GHz, for example, 2300 MHz-2690 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0269] In one embodiment, at the resonance point of the first resonance, the currents on the radiators 210 on both sides of the first slot are in the same direction, and the radiators 210 on both sides of the first slot each have currents in the same direction (or, in other words, there is no current reversal point on the radiator). At the resonance point of the second resonance, the currents on the radiators 210 on both sides of the first slot are in the same direction, and the radiators 210 on both sides of the first slot each have currents in the same direction (or, in other words, there is no current reversal point on the radiator).

[0270] It should be understood that the above-mentioned current same direction can be understood as the current flowing from one end to the other end, for example, the current on the radiator 210 flows from the first position 201 (first end) to the second position 202 (second end), or, from the second position 202 (second end) to the first position 201 (first end). Alternatively, the above-mentioned current same direction can be understood as the current is distributed in the same direction on the path of the current flow, and there is no current reversal point. For the sake of simplicity of discussion, the current same direction mentioned in the embodiments of the present application can be understood accordingly.

[0271] It should be understood that both the first resonance and the second resonance can be regarded as being generated by the slot CM mode. Since the slot CM mode has higher radiation efficiency and system efficiency, the antenna has better radiation efficiency and system efficiency within the working frequency band formed by the first resonance and the second resonance.

[0272] In one embodiment, at the resonance point of the first resonance, the current distributed on the feeding element 221 is a current in the same direction. At the resonance point of the second resonance, the current distributed on the feeding element 221 is a current in the same direction.

[0273] It should be understood that the current on the feeding element 221 can be generated by the line DM mode. The radiator 210 generates a unidirectional current through the unidirectional current coupling on the feeding element 221, thereby generating a second resonance.

[0274] In one embodiment, the width of the first gap is greater than or equal to 0.1 mm and less than or equal to 2 mm. It should be understood that the width of the gaps opened on the frame in the embodiment of the present application can be within the above range, and for the sake of simplicity, they will not be repeated one by one.

[0275] In one embodiment, the ratio of the length of the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 25%. In one embodiment, the ratio of the length of the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 50%.

[0276] In one embodiment, the ratio of the length of the overlapping portion of the feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210) to the length of the feeder 221 is greater than or equal to 50%. In one embodiment, the ratio of the length of the overlapping portion of the feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210) to the length of the feeder 221 is greater than or equal to 75%.

[0277] It should be understood that when the ratio of the length of the projection to the length of the feeder 221 (or the ratio of the length of the projection to the length of the radiator 210) is within the above range, the radiator 210 can be better excited and the antenna 200 has better radiation characteristics. When the first position 201 and the second position 202 are respectively located at the first side and the second side of the frame that intersect at an angle, the extension direction of the radiator 210 includes the extension direction of the first side (for example, the x direction) and the extension direction of the second side (for example, the y direction), and the length of the overlapping portion can be understood as the sum of the length of the overlapping portion in the extension direction of the first side (for example, the x direction) and the length of the overlapping portion in the extension direction of the second side (for example, the y direction).

[0278] In one embodiment, the lengths of the radiators on both sides of the first slot are substantially the same, and the ratio of the lengths of the radiators on both sides of the first slot (the length of the conductor portion of the frame between the first position 201 and the first slot, and the length of the conductor portion of the frame between the second position 202 and the first slot) is greater than or equal to 0.7 and less than or equal to 1.3.

[0279] It should be understood that when the lengths of the radiators on both sides of the first slot are roughly the same, the structure of the antenna 200 is more symmetrical. As the symmetry of the antenna 200 increases, the slot CM mode can be better excited, so that the antenna 200 can have better radiation characteristics (for example, bandwidth, radiation efficiency, etc.) at the first resonance and the second resonance.

[0280] In one embodiment, the distance between the projection of the first slit on the feed 221 and the center of the feed 221 is less than or equal to one quarter of the length of the feed 221. In one embodiment, the projection of the first slit on the feed 221 is in the central area of ​​the feed 221.

[0281] It should be understood that when the feeder 221 is roughly aligned with the radiator 210, the structure of the antenna 200 is more symmetrical. As the symmetry of the antenna 200 increases, the slot CM mode can be better excited, so that the antenna 200 can have better radiation characteristics (for example, bandwidth, radiation efficiency, etc.) at the first resonance and the second resonance. Among them, the alignment of the feeder 221 and the radiator 210 can be understood as the first radiator 210 is symmetrical along the virtual axis of the feeder 221, and the lengths of the feeders 221 on both sides of the virtual axis are the same.

[0282] At the same time, the radiator 210 has a weaker current and a stronger electric field in the vicinity of the first slit. The feeder 221 has a weaker electric field and a stronger current in the vicinity of the center. The area (first slit) where the radiator 210 has a stronger electric field (stronger magnetic field) is close to the area (midpoint) where the feeder 221 has a weaker electric field (stronger magnetic field), which can make the first resonance and the second resonance more balanced.

[0283] In one embodiment, the feed 221 includes a connection point 241. The antenna 200 may further include an electronic component 242. A first end of the electronic component 242 is coupled to the connection point 241, and a second end of the electronic component 242 is coupled to the floor 300. In one embodiment, the distance between the connection point 241 and the second end of the feed 221 is less than one third of the length of the feed 221.

[0284] It should be understood that the electronic component 242 can be used to increase the symmetry of the antenna 200. As the symmetry of the antenna 200 increases, the slot CM mode can be better excited, so that the antenna 200 can have better radiation characteristics (for example, bandwidth, radiation efficiency, etc.) at the first resonance and the second resonance. In one embodiment, the feed point 211 and the connection point 241 are symmetrical along the virtual axis of the feed element 221, and the lengths of the feed elements 221 on both sides of the virtual axis are the same. In one embodiment, the electronic component can be a capacitor.

[0285] In one embodiment, the projection of the feeder 221 on the frame 11 completely overlaps with the radiator 210. In one embodiment, the ratio of the lengths of the radiators on both sides of the first gap is greater than or equal to 0.9 and less than or equal to 1.1. In one embodiment, the coupling modes of both ends of the radiator 210 and the floor 300 are the same (for example, the frame 11 is coupled to the floor 300 through inductance at both the first position 201 and the second position 202, or is coupled to the floor 300 through connecting ribs). In one embodiment, the projection of the first gap on the feeder 221 coincides with the center of the feeder 221.

[0286] In one embodiment, the projection of the feeding element 221 on the frame 11 is located between the first position 201 and the second position 202 .

[0287] It should be understood that the increase in the symmetry of the antenna 200 can better excite the slot CM mode, so that the antenna 200 can have better radiation characteristics (eg, bandwidth, radiation efficiency, etc.) at the first resonance and the second resonance.

[0288] In one embodiment, the second end of the feeding element 221 is an open end.

[0289] In one embodiment, when the electronic component 242 is located at the second end of the feeder 221, the connection point 241 and the floor 300 cannot be equivalent to a short circuit (the connection point 241 is coupled to the floor). Therefore, when the electronic component 242 is a capacitor, its capacitance value is less than the first threshold. When the frequency of the electrical signal fed into the feeding circuit 231 (for example, the center frequency of the working frequency band) is less than or equal to 1 GHz, the first threshold is 10 pF. When the frequency of the electrical signal fed into the feeding circuit 231 is greater than 1 GHz and less than or equal to 2 GHz, the first threshold is 5 pF. When the frequency of the electrical signal fed into the feeding circuit 231 is greater than 2 GHz and less than or equal to 3 GHz, the first threshold is 3 pF. When the frequency of the electrical signal fed into the feeding circuit 231 is greater than 3 GHz, the first threshold is 2 pF.

[0290] In one embodiment, both ends of the feeding element 221 are open ends, the electrical length of the radiator 210 is the same as the electrical length of the feeding element 221, and both are half of the first wavelength, where the first wavelength is the wavelength corresponding to the center frequency between the resonance point of the first resonance and the resonance point of the second resonance.

[0291] In one embodiment, the electrical length of the radiator 210 is substantially the same as the electrical length of the feeder 221. In one embodiment, the physical length of the radiator 210 is substantially the same as the physical length of the feeder 221. Since the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease the physical length while the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1×50%≤L2≤L1. In one embodiment, the physical length L1 of the radiator 210 may be less than or equal to the physical length L2 of the feeder 221, satisfying: L1≤L2≤L1×150%.

[0292] In one embodiment, the physical length L1 of the radiator 210 may be understood as the length of the conductive portion of the frame between the first position 201 and the second position 202 , for example, the sum of the physical lengths of the radiator 210 on both sides of the first gap.

[0293] In one embodiment, the distance D between the feeder 221 and the radiator 210 is less than or equal to 5 mm, so that there is a good coupling characteristic between the feeder 221 and the radiator 210. In one embodiment, the distance D between the feeder 221 and the radiator 210 is less than or equal to 2 mm.

[0294] It should be understood that the distance D between the feeder 221 and the radiator 210 may be understood as the minimum value of the distance between a point on the feeder 221 and a point on the radiator 210 .

[0295] In one embodiment, the electronic device 10 may further include a bracket 140. Fig.10 As shown, it is a partial cross-sectional view of the electronic device along the first direction. For the sake of simplicity, only the antenna structure and the structural relationship between the bracket 140, the back cover 21 and the PCB 17 are shown in cross section.

[0296] In one embodiment, the feeder 221 may be disposed on the surface of the bracket 140, and at least a portion of the bracket 140 may be disposed between the PCB 17 and the back cover 21 to support the feeder 221. The metal layer in the PCB 17 may serve as the floor 300 in the embodiment of the present application, and the floor may also be the middle frame of the electronic device or other metal layers.

[0297] In one embodiment, the feeder 221 on the bracket 140 may be located above the PCB 17. For example, the projection of the feeder 221 on the PCB 17 completely overlaps with the PCB 17. In one embodiment, other electronic components may be arranged between the bracket 140 and the PCB 17. To avoid mutual interference between the electronic components and the feeder 221, the electronic components may be arranged in a metal shielding cover. In one embodiment, the feeder 221 on the bracket 140 may be located at the edge of the PCB 17. For example, the projection of the feeder 221 on the PCB 17 partially overlaps with the conductive component on the PCB 17; for another example, the projection of the feeder 221 on the PCB 17 coincides with the outer edge of the conductive component on the PCB 17 or is within 10 mm of the inner edge of the outer edge. In one embodiment, the feeder 221 on the bracket 140 may be located above the hollow area (for example, the non-conductive part) of the PCB 17 or the gap between the PCB 17 and the frame. For example, the projection of the feeder 221 on the PCB 17 does not overlap with the PCB 17.

[0298] In one embodiment, the distance H1 between the bracket 140 and the PCB 17 may be greater than or equal to 0.1 mm and less than or equal to 3 mm. In one embodiment, the distance H2 between the bracket 140 and the back cover 21 may be greater than or equal to 0.1 mm and less than or equal to 1 mm.

[0299] In one embodiment, the feeder 221 may be disposed on a surface of the back cover 21 (eg, a surface facing the PCB 17). In one embodiment, the feeder 221 may also be disposed on a surface of the PCB 17. The embodiment of the present application does not limit the location of the feeder 221.

[0300] It should be understood that for the sake of brevity, Fig. 9 , Fig.10 In the technical scheme shown, the conductive part of the frame 11 is used as the radiator 210, and the feeder 221 is a non-frame structure (for example, arranged on a bracket, a PCB or a back cover) for illustration. In actual production or design, the relative positions of the radiator 210 and the feeder 221 can be interchanged. For example, the conductive part of the frame 11 is used as the feeder 221, and the radiator 210 is a non-frame structure (for example, arranged on a bracket, a PCB or a back cover).

[0301] It should be understood that for the sake of simplicity of discussion, in the embodiments of the present application, only the example of the feeder 221 being located on the floor 300 (the feeder 221 and the floor 300 completely overlap along the z direction) is taken. In actual production or design, the feeder 221 and the floor 300 partially overlap along the z direction, or the feeder 221 and the floor 300 do not overlap along the z direction. The embodiments of the present application do not limit this.

[0302] In the embodiment of the present application, both the feeding element 221 and the radiator 210 act as radiators and participate in the radiation mode of the antenna.

[0303] In one embodiment, the feeder 221 is in a strip shape. "Strip" can be understood as a length much greater than the width, for example, the length is greater than three times, or six times the width. In one embodiment, the smallest dimension of the three-dimensional dimensions of the feeder 221 is the thickness. For example, when the feeder 221 can be set on the surface of the bracket 140, the dimension in the direction perpendicular to the surface of the bracket 140 is the thickness. The dimensions of the three dimensions of the feeder 221 except the thickness can be understood as the length and width.

[0304] In one embodiment, the width of the feeder 221 may be less than or equal to 3 mm. In one embodiment, the width of the feeder 221 may be less than or equal to 2 mm.

[0305] Fig.11 and Fig.12 yes Fig. 9 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.11 yes Fig. 9 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.12 yes Fig. 9 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0306] It should be understood that in the above simulation results, only the following parameters are taken as examples: the distance between the first gap and the first position is 14 mm, the distance between the first gap and the second position is 12 mm, the distance between the feeder and the radiator is 1.8 mm, the distance between the bracket and the PCB is 0.9 mm, the width of the feeder is 1.5 mm, the length of the feeder is 23 mm, and the capacitance value of the electronic component is 1 pF.

[0307] like Fig.11 As shown, the antenna 200 can generate resonances near 1.87 GHz, 2.23 GHz, and 3.19 GHz, but the resonance excitation near 3.19 GHz is weaker. The resonance generated near 1.87 GHz may correspond to the first resonance in the above embodiment, and the resonance generated near 2.23 GHz may correspond to the second resonance in the above embodiment. The resonance generated near 3.19 GHz may correspond to the resonance generated by the slot DM mode.

[0308] It should be understood that for the sake of simplicity, the example in which the resonance point frequency of the first resonance is lower than the resonance point frequency of the second resonance is used for explanation. In actual production, the resonance point frequency of the first resonance may also be higher than the resonance point frequency of the second resonance.

[0309] like Fig.12 As shown, both the first resonance and the second resonance can be generated by the slot CM mode. Since the slot CM mode has higher radiation efficiency and system efficiency, the antenna does not generate pits in the working frequency band formed by the first resonance and the second resonance, and has better radiation efficiency and system efficiency. Taking the system efficiency>-2dB as an example, the system efficiency bandwidth of the antenna 200 is about 530MHz.

[0310] Figures 13 to 18 yes Fig. 9 The current and electric field distribution diagram of the antenna 200 in the electronic device 10 is shown. Fig.13 yes Fig. 9 FIG. 5 is a schematic diagram of current distribution of the antenna at the first resonance point (1.87 GHz). Fig.14 yes Fig. 9 FIG. 5 is a schematic diagram of current distribution of the antenna at the second resonance point (2.23 GHz). Fig.15 yes Fig. 9 Schematic diagram of current distribution of the antenna shown in at 3.19 GHz. Fig.16 yes Fig. 9 Schematic diagram of the electric field distribution of the antenna at the first resonance point (1.87 GHz) shown in FIG. Fig.17 yes Fig. 9 Schematic diagram of the electric field distribution of the antenna at the second resonance point (2.23 GHz) shown in FIG. Fig.18 yes Fig. 9 Schematic diagram of the electric field distribution of the antenna shown in at 3.19 GHz.

[0311] like Fig.13 As shown, the currents on the radiators on both sides of the first slot are in the same direction, and the currents on the feeders are in the same direction. The current distribution on the radiators conforms to the current characteristics of the slot CM mode. The current distribution on the feeders conforms to the current characteristics of the line DM mode.

[0312] like Fig.14 As shown, the currents on the radiators on both sides of the first slot are in the same direction, and the currents on the feeders are in the same direction. The current distribution on the radiators conforms to the current characteristics of the slot CM mode. The current distribution on the feeders conforms to the current characteristics of the line DM mode.

[0313] like Fig.15 As shown, the currents on the radiators on both sides of the first slot are reversed, and the currents on the feeders on both sides of the center are reversed. The current distribution on the radiators conforms to the current characteristics of the slot DM mode. The current distribution on the feeders conforms to the current characteristics of the line CM mode.

[0314] like Fig.16 As shown, the electric field generated by the antenna is in opposite directions on both sides of the first slot (pointing to the positive and negative directions of the z-axis, respectively), which is consistent with the electric field characteristics of the slot CM mode.

[0315] like Fig.17 As shown, the electric field generated by the antenna is in opposite directions on both sides of the first slot (pointing to the positive and negative directions of the z-axis, respectively), which is consistent with the electric field characteristics of the slot CM mode.

[0316] like Fig.18 As shown, the electric field generated by the antenna is in the same direction on both sides of the first slot (both pointing to the positive direction of the z-axis), which conforms to the electric field characteristics of the slot DM mode.

[0317] Fig.19 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0318] like Fig.19 As shown, the feeder 221 includes a first connection point 241 and a second connection point 243, and the feed point 211 is located between the connection point 241 and the connection point 243. The antenna 200 may also include an electronic component 242 and an electronic component 244. The first end of the electronic component 242 is coupled to the connection point 241, and the second end of the electronic component 242 is coupled to the floor 300. The first end of the electronic component 244 is coupled to the connection point 243, and the second end of the electronic component 244 is coupled to the floor 300.

[0319] In one embodiment, the connection point 241 is located at the second end of the feeder 221, and the connection point 243 is located at the first end of the feeder 221. When the electrical length of the feeder 221 remains unchanged, the electronic components 242 and 244 can be used to reduce the physical length of the feeder 221 to achieve miniaturization. In one embodiment, the distance between the connection point 241 and the end of the second end of the feeder 221 is less than or equal to 3 mm. In one embodiment, the distance between the connection point 243 and the end of the first end of the feeder 221 is less than or equal to 3 mm.

[0320] In one embodiment, when the electronic components 242 and 244 are provided, the physical length L1 of the radiator 210 and the physical length L2 of the feeding element 221 satisfy: L1×70%≤L2≤L1×90%.

[0321] It should be understood that Fig.19 The antenna 200 is shown with Fig. 9 The differences between the antenna 200 shown include the arrangement of the electronic components 244 and 242 .

[0322] In one embodiment, when the electronic components 242 and 244 are capacitors, their capacitance values ​​are less than the first threshold value. When the frequency of the electrical signal fed into the feed circuit 231 is less than or equal to 1 GHz, the first threshold value is 10 pF. When the frequency of the electrical signal fed into the feed circuit 231 is greater than 1 GHz and less than or equal to 2 GHz, the first threshold value is 5 pF. When the frequency of the electrical signal fed into the feed circuit 231 is greater than 2 GHz and less than or equal to 3 GHz, the first threshold value is 3 pF. When the frequency of the electrical signal fed into the feed circuit 231 is greater than 3 GHz, the first threshold value is 2 pF.

[0323] In one embodiment, the capacitance value of the electronic component 242 and the capacitance value of the electronic component 244 may be the same or different, and the embodiment of the present application does not limit this.

[0324] For the sake of brevity, Fig.19 The antenna 200 is shown with Fig. 9 Similar parts of the antenna 200 shown are not described one by one. For example, similar parts include the position of the radiator 210 and its positional relationship with the feeder 221; the radiator 210 and the feeder 221 are used to generate the first resonance and the second resonance; the first resonance and the second resonance can be used to jointly support an operating frequency band; the position and width of the first gap; the boundary conditions of the feeder 221 (open end or ground end); the shape of the feeder 221, for example, a strip shape; the position where the feeder 221 is set; and the like.

[0325] Fig. 20 and Fig.21 yes Fig.19The simulation results of the antenna 200 in the electronic device 10 under different conditions are shown. Fig. 20 yes Fig.19 The S-parameter simulation results of the antenna 200 in the electronic device 10 under different conditions are shown. Fig.21 yes Fig.19 The illustrated system efficiency and radiation efficiency simulation results of the antenna 200 in the electronic device 10 under different conditions.

[0326] It should be understood that in the above simulation results, the sizes of the radiators are the same, the width of the feeders is 1 mm, and the simulation results of the antenna 200 with feeders of different physical lengths and different distances between the feeder and the radiator are shown.

[0327] Case 1: Fig. 9 The antenna shown does not have the electronic component 244 , the distance between the feeder and the radiator is 1.8 mm, the length of the feeder is 23 mm, and the capacitance value of the electronic component 242 is 1 pF.

[0328] Case 2: Fig.19 In the antenna shown, the distance between the feeder and the radiator is 1.2 mm, the length of the feeder is 15 mm, the capacitance value of the electronic component 242 is 1.5 pF, and the capacitance value of the electronic component 244 is 0.7 pF.

[0329] Case 3: Fig.19 In the antenna shown, the distance between the feeder and the radiator is 0.6 mm, the length of the feeder is 7 mm, the capacitance value of the electronic component 242 is 3.6 pF, and the capacitance value of the electronic component 244 is 2 pF.

[0330] like Fig. 20 As shown, the antennas in Case 1, Case 2, and Case 3 can all resonate near 1.9 GHz (first resonance) and 2.2 GHz. However, as the length of the feeder decreases, the working bandwidth of the antenna gradually decreases with S11<-4 dB as the limit.

[0331] As shown in 21, the first resonance and the second resonance in case 1, case 2, and case 3 can all be generated by the slot CM mode, and the antenna will not produce pits in the working frequency band formed by the first resonance and the second resonance, and has good radiation efficiency and system efficiency. However, as the length of the feeder decreases, taking the system efficiency>-2dB as an example, the system efficiency bandwidth of the antenna 200 gradually decreases.

[0332] Fig. 22 and Fig.23 yes Fig.19 The simulation results of the antenna in the electronic device 10 are shown with the feeder arranged at different positions. Fig. 20 yes Fig.19The S-parameter simulation results of the antenna in the electronic device 10 are shown when the feeding element is set at different positions. Fig.21 yes Fig.19 The simulation results of the system efficiency and radiation efficiency of the antenna in the electronic device 10 are shown when the feeding element is set at different positions.

[0333] It should be understood that in the above embodiments, only the feeding element is arranged on the bracket as an example for description. Fig. 22 and Fig.23 The simulation results shown show the simulation results of the antenna when the feeder is set on the bracket or the PCB. Compared with the feeder being set on the bracket surface, when it is set on the PCB (taking the PCB thickness as 0.7 mm as an example), a microstrip line structure is formed, and the resonance point frequency of the first resonance and the resonance point frequency of the second resonance can be adjusted by adjusting the distance between the radiator, the electronic component 242, the electronic component 244, etc.

[0334] like Fig. 22 As shown, when the feeding element is arranged on the bracket or the PCB, the antenna can resonate near 1.9 GHz (first resonance) and near 2.2 GHz.

[0335] As shown in 23, the first resonance and the second resonance can both be generated by the slot CM mode. When the feeder is set on the bracket or PCB, the antenna will not produce pits in the working frequency band formed by the first resonance and the second resonance, and has good radiation efficiency and system efficiency. However, when the feeder is set on the PCB to form a microstrip line structure, the radiation efficiency of the antenna is slightly reduced.

[0336] Fig.24 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0337] like Fig.24 As shown, the antenna 200 may further include a switch 251 and a switch 252. The switch 251 may be coupled between the connection point 241 and the floor 300 and may be used to switch the electronic component 242. The switch 252 may be coupled between the conductors on both sides of the first slot and may be used to switch the electronic component 245.

[0338] It should be understood that Fig.24 The antenna 200 is shown with Fig.19 The differences in antenna 200 shown include switch 251 , switch 252 , and electronic component 245 . Fig.24 The switches 251 and 252 in the antenna 200 shown can switch different electronic components 242 and 245, thereby adjusting the resonance point frequency of the first resonance and the resonance point frequency of the second resonance.

[0339] It should be understood that Fig.24 It can also be based on Fig. 9The overall structure is designed according to the embodiment of the present invention, the difference being that the switch 252 coupled to both sides of the first gap and the electronic components and the switch 251 coupled to the feeding element are added.

[0340] For the sake of brevity, Fig.24 The antenna 200 is shown with Fig. 9 or Fig.19 Similar parts of the antenna 200 shown are not described one by one. For example, similar parts include the position of the radiator 210 and its positional relationship with the feeder 221; the proportional relationship between the physical lengths of the radiator 210 and the feeder 221; the radiator 210 and the feeder 221 are used to generate a first resonance and a second resonance; the first resonance and the second resonance can be used to jointly support an operating frequency band; the position and width of the first gap; the boundary conditions of the feeder 221 (open end or ground end); the shape of the feeder 221, for example, a strip; the position where the feeder 221 is set; and the like.

[0341] Fig.25 and Fig.26 yes Fig.24 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.25 yes Fig.24 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.26 yes Fig.24 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0342] like Fig.25 As shown, in Fig.24 In the antenna 200 shown, the switches 251 and 252 can switch different electronic components 242 and 245 , thereby adjusting the resonance point frequency of the first resonance and the resonance point frequency of the second resonance.

[0343] It should be understood that different electronic components 242 and electronic components 245 may be switched according to different communication requirements of the electronic device 10. Fig.25 and Fig.26 Among the simulation results shown, only simulation results of four different switching states (the switching state may be understood as switching different electronic components 242 and / or electronic components 245 ) are shown.

[0344] As shown in 26, at different resonance point frequencies of the first resonance and the second resonance, the antenna has good radiation efficiency and system efficiency, and the antenna does not produce pits in the working frequency band formed by the first resonance and the second resonance.

[0345] Fig. 27 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0346] like Fig. 27 As shown, the first end of the feeding element 221 is an open end, the second end is a ground end, and the second end of the feeding element 221 is coupled to the floor 300 .

[0347] In one embodiment, the distance between the feeding point 211 and the end of the first end of the feeding element 221 is different from the distance between the feeding point 211 and the end of the second end of the feeding element 221, and the feeding element 221 can feed the electrical signal in a biased feeding manner.

[0348] In one embodiment, the feeding point 211 may be located at the first end of the feed element 221. In one embodiment, the distance between the feeding point 211 and the end of the first end of the feed element 221 is less than or equal to 3 mm, and the feed element 221 may feed the electrical signal in a side-feeding manner.

[0349] In one embodiment, the distance between the feed point 211 and the end of the first end of the feed element 221 is greater than half the length of the feed element 221. The feed element 221 may form a structure similar to a left-hand antenna, which may be, for example, an antenna conforming to a composite right and left hand (CRLH) transmission line structure.

[0350] It should be understood that Fig. 27 The antenna 200 is shown with Fig.19 The difference of the antenna 200 shown includes that the second end of the feeding element 221 is a ground end.

[0351] exist Fig.19 In the antenna 200 shown, the first end and the second end of the feeding element 221 are open ends, and the feeding element 221 forms a radiator structure consistent with a dipole antenna. Fig. 27 In the antenna 200 shown, the first end of the feeder 221 is an open end and the second end is a ground end. The feeder 221 can form a structure similar to a monopole or a left-handed antenna. When an electrical signal is fed into the feed point, a current in the same direction can also be generated on the radiator 210, similar to Fig.19 The current on the feeder 221 shown can also excite the radiator 210 to resonate. In addition, since the first end of the feeder 221 is an open end and the second end is a ground end, the size of the feeder 221 can be further reduced (for example, it can be regarded as reduced from a half-wavelength structure to a quarter-wavelength structure), thereby achieving miniaturization.

[0352] In one embodiment, the distance between the projection of the first slit on the feeder 221 and the ground end (the grounding point of the second end) of the feeder 221 is less than or equal to one half of the length of the feeder 221. In one embodiment, the distance between the projection of the ground end (the grounding point of the second end) of the feeder 221 on the frame 11 and the first slit is less than or equal to one quarter of the length of the radiator 210.

[0353] It should be understood that the radiator 210 has a weaker current and a stronger electric field in the vicinity of the first slit. The area near the ground end of the feeder 221 has a weaker electric field and a stronger current. The area (first slit) where the radiator 210 has a stronger electric field (stronger magnetic field) is close to the area (ground end) where the feeder 221 has a weaker electric field (stronger magnetic field), which can make the first resonance and the second resonance more balanced.

[0354] In one embodiment, the projection of the feeding element 221 on the frame 11 is located between the first position and the second position.

[0355] In one embodiment, the ratio of the length of the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 12.5%. In one embodiment, the ratio of the length of the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 25%.

[0356] In one embodiment, the ratio of the length of the overlapping portion of the feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 ) to the length of the feeder 221 is greater than or equal to 50%.

[0357] In one embodiment, the electrical length of the feeder 221 is one quarter of the first wavelength, the electrical length of the radiator 210 is one half of the first wavelength, and the first wavelength is the wavelength corresponding to the center frequency between the resonance point of the first resonance and the resonance point of the second resonance.

[0358] In one embodiment, the electrical length of the feeder 221 is half the electrical length of the radiator 210. In one embodiment, the physical length of the feeder 221 is approximately half the physical length of the radiator 210. Since the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease the physical length when the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1×25%≤L2≤L1×50%. In one embodiment, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1×35%≤L2≤L1×75%.

[0359] For the sake of brevity, Fig. 27 The antenna 200 is shown with Fig. 9 Similar parts of the antenna 200 shown are not described one by one. For example, similar parts include: the radiator 210 and the feeder 221 are used to generate the first resonance and the second resonance; the first resonance and the second resonance can be used to jointly support an operating frequency band; the position and width of the first gap; the shape of the feeder 221, for example, a strip shape; the position where the feeder 221 is set, etc.

[0360] It should be understood that the antenna 200 (eg, Fig. 9 , Fig.19 , Fig.24 ) can all adopt a structure in which the first end is an open end and the second end is a ground end to reduce the size, and the embodiments of the present application do not limit this.

[0361] at the same time, Fig. 27 In the antenna 200 shown, it is also possible to use Fig.24 The switch structure shown in, for example, switches can be coupled on both sides of the first gap, and a switch can be coupled between the first end of the feeder 221 and the floor. The embodiments of the present application do not limit this, and can be understood accordingly in the embodiments of the application, and will not be described one by one.

[0362] Fig.28 and Fig.29 yes Fig. 27 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.28 yes Fig. 27 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.29 yes Fig. 27 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0363] like Fig.28 As shown, compared to Fig.19 The antenna shown, Fig. 27 The antenna shown can also resonate at around 1.9 GHz and 2.2 GHz (because the frequencies of the two resonance points are close, they are combined into one resonance). Fig. 27 In the antenna shown, the first end of the feed element is an open end and the second end is a grounded end. The antenna structure has poor symmetry, so the working bandwidth of the antenna is narrow, and the excitation of the slot DM mode near 3.1 GHz is enhanced.

[0364] like Fig.29 As shown, the antenna does not generate pits in the working frequency band formed by the first resonance and the second resonance, and has good radiation efficiency and system efficiency.

[0365] Fig.30 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0366] like Fig.30 As shown, the first end of the feeder 221 is an open end, and the second end is an open end. The feeder 221 includes a grounding point 212. The grounding point 212 is coupled to the floor 300.

[0367] In one embodiment, the feeding point 211 may be located at the first end or the second end of the feeding element 221. In one embodiment, the distance between the feeding point 211 and the end of the first end or the second end of the feeding element 221 is less than or equal to 3 mm, and the feeding element 221 may feed the electrical signal in a side-feeding manner.

[0368] In one embodiment, the lengths of the feeders 221 on both sides of the grounding point 212 are different, and the feeders 221 form an asymmetric T-shaped structure. In one embodiment, the lengths of the feeders 221 on both sides of the grounding point 212 are different, which can be understood as the difference in length of the feeders 221 on both sides of the grounding point 212 is greater than or equal to 5 mm.

[0369] It should be understood that Fig.30 The antenna 200 is shown with Fig.19 The difference of the antenna 200 shown in the figure is that the feeding element 221 further includes a grounding point 212 , and the grounding point 212 is coupled to the floor 300 .

[0370] It should be understood that Fig.30 The asymmetric T-shaped feeder can also be applied to the antenna 200 shown in the above embodiment (for example, Fig. 9 , Fig.19 , Fig.24 , Fig. 27 ))middle.

[0371] For the sake of brevity, Fig.30 The antenna 200 is shown with Fig. 9 Similar parts of the antenna 200 shown are no longer described one by one. For example, similar parts include the position of the radiator 210 and its positional relationship with the feeder 221; the radiator 210 and the feeder 221 are used to generate the first resonance and the second resonance; the first resonance and the second resonance can be used to jointly support an operating frequency band; the position and width of the first gap; the boundary conditions of the feeder 221 (open end or ground end); the shape of the feeder 221, for example, a strip shape; the position where the feeder 221 is set, etc.

[0372] Fig.30In the antenna 200 shown, the feeding element 221 can have both the line DM mode and the line CM mode. When the feeding circuit 231 feeds an electrical signal, the antenna 200 can generate a first resonance, a second resonance, a third resonance and a fourth resonance to expand the working bandwidth of the antenna 200.

[0373] In one embodiment, the first resonance and the second resonance may correspond to the slot CM mode, and the third resonance and the fourth resonance may correspond to the slot DM mode.

[0374] It should be understood that the larger or smaller the ratio of the length of the feeding element 221 on both sides of the grounding point 212 (approximately deviating from the center of the feeding element 221 ), the larger the frequency difference between the first resonance (second resonance) and the third resonance (fourth resonance).

[0375] In one embodiment, at the resonance point of the first resonance, the currents on the radiators 210 on both sides of the first slot are in the same direction, and the radiators 210 on both sides of the first slot each have currents in the same direction (or, in other words, there is no current reversal point on the radiator). At the resonance point of the second resonance, the currents on the radiators 210 on both sides of the first slot are in the same direction, and the radiators 210 on both sides of the first slot each have currents in the same direction (or, in other words, there is no current reversal point on the radiator).

[0376] In one embodiment, at the resonance point of the third resonance, the currents on the radiators 210 on both sides of the first slot are reversed, and the radiators 210 on both sides of the first slot each have a reverse current (or, in other words, the radiators have a current reverse point). At the resonance point of the fourth resonance, the currents on the radiators 210 on both sides of the first slot are reversed, and the radiators 210 on both sides of the first slot each have a reverse current (or, in other words, the radiators have a current reverse point).

[0377] In one embodiment, at the resonance point of the first resonance, the current on the feeder 221 is in the same direction, and at the resonance point of the second resonance, the current on the feeder 221 is in the same direction. And at the resonance point of the first resonance, the feeders 221 on both sides of the grounding point 212 each have currents in the same direction (or, there is no current reversal point on the feeder 221).

[0378] Fig.31 and Fig.32 yes Fig.30 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.31 yes Fig. 9 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.32 yes Fig.30 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0379] like Fig.31As shown, the antenna 200 can generate resonances near 2.1 GHz, near 2.4 GHz, near 3.4 GHz, and near 3.5 GHz. The resonance generated near 2.1 GHz may correspond to the first resonance in the above embodiment, the resonance generated near 2.4 GHz may correspond to the second resonance in the above embodiment. The resonance generated near 3.4 GHz may correspond to the third resonance in the above embodiment, and the resonance generated near 3.5 GHz may correspond to the fourth resonance in the above embodiment.

[0380] like Fig.32 As shown, the first resonance and the second resonance can both be generated by the slot CM mode, and the third resonance and the fourth resonance can both be generated by the slot DM mode. Compared with the slot DM mode, the slot CM mode has higher radiation efficiency and system efficiency. Therefore, the radiation efficiency and system efficiency of the antenna in the working frequency band formed by the first resonance and the second resonance are better than the radiation efficiency and system efficiency of the working frequency band formed by the third resonance and the fourth resonance.

[0381] Figures 33 to 40 yes Fig.30 The current and electric field distribution diagram of the antenna 200 in the electronic device 10 is shown. Fig.33 yes Fig.30 FIG. 5 is a schematic diagram of current distribution of the antenna at the first resonance point (2.12 GHz). Fig.34 yes Fig.30 FIG. 5 is a schematic diagram of current distribution of the antenna at the second resonance point (2.45 GHz). Fig.35 yes Fig.30 Schematic diagram of current distribution of the antenna at the third resonance point (3.43 GHz) shown in FIG. Fig.36 yes Fig.30 Schematic diagram of current distribution of the antenna at the fourth resonance point (3.54 GHz) shown in FIG. Fig.37 yes Fig.30 Schematic diagram of the electric field distribution of the antenna at the first resonance point (2.12 GHz). Fig.38 yes Fig.30 Schematic diagram of the electric field distribution of the antenna at the second resonance point (2.45 GHz) shown in FIG. Fig.39 yes Fig.30 Schematic diagram of the electric field distribution of the antenna at the third resonance point (3.43 GHz) shown in FIG. Fig.40 yes Fig.30 Schematic diagram of electric field distribution of the antenna at the fourth resonance point (3.54 GHz) shown in FIG.

[0382] like Fig.33As shown, the currents on the radiators on both sides of the first slot are in the same direction, and the currents on the feeders on both sides of the grounding point are in the same direction. The current distribution on the radiator conforms to the current characteristics of the slot CM mode. The current distribution on the feeder conforms to the current characteristics of the line DM mode.

[0383] like Fig.34 As shown, the currents on the radiators on both sides of the first slot are in the same direction, and the currents on the feeders on both sides of the grounding point are in the same direction. The current distribution on the radiator conforms to the current characteristics of the slot CM mode. The current distribution on the feeder conforms to the current characteristics of the line DM mode.

[0384] like Fig.35 As shown, the currents on the radiators on both sides of the first slot are reversed, and the currents on the feeders on both sides of the grounding point are reversed. The current distribution on the radiators conforms to the current characteristics of the slot DM mode. The current distribution on the feeders conforms to the current characteristics of the line CM mode.

[0385] like Fig.36 As shown, the currents on the radiators on both sides of the first slot are reversed, and the currents on the feeders on both sides of the grounding point are reversed. The current distribution on the radiators conforms to the current characteristics of the slot DM mode. The current distribution on the feeders conforms to the current characteristics of the line CM mode.

[0386] like Fig.37 As shown, the electric field generated by the antenna is in opposite directions on both sides of the first slot (pointing to the positive and negative directions of the z-axis, respectively), which is consistent with the electric field characteristics of the slot CM mode.

[0387] like Fig.38 As shown, the electric field generated by the antenna is in opposite directions on both sides of the first slot (pointing to the positive and negative directions of the z-axis, respectively), which is consistent with the electric field characteristics of the slot CM mode.

[0388] like Fig.39 As shown, the electric field generated by the antenna is in the same direction on both sides of the first slot (both pointing to the positive direction of the z-axis), which conforms to the electric field characteristics of the slot DM mode.

[0389] like Fig.40 As shown, the electric field generated by the antenna is in the same direction on both sides of the first slot (both pointing to the positive direction of the z-axis), which conforms to the electric field characteristics of the slot DM mode.

[0390] Fig.41 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0391] like Fig.41As shown, the frame 11 includes a first position 201, a second position 202 and a third position 203 which are sequentially arranged, and the second position 202 is located between the first position 201 and the third position 203. The frame 11 is coupled to the floor 300 at the first position 201 and the second position 202, and the frame 11 has a first gap between the first position 201 and the second position 202. The frame 11 has a second gap at the third position 203. In one embodiment, the first gap is located in a central area between the first position 201 and the second position 202.

[0392] The radiator 210 is a conductive portion of the frame 11 between the first position 201 and the second position 202. The conductive portion of the frame 11 between the second position 202 and the third position 203 is a parasitic stub.

[0393] In one embodiment, the distance between the second position 202 and the third position 203 is greater than or equal to one third and less than or equal to two thirds of the distance between the first position 201 and the second position 202 .

[0394] It should be understood that Fig.41 The antenna 200 is shown with Fig.19 The difference of the antenna 200 shown is the parasitic branch. Among them, the radiator 210 (the conductive part between the first position 201 and the second position 202) can form a slot antenna, and the above-mentioned first resonance and second resonance are generated by the slot CM mode. The parasitic branch and part of the radiator 210 (the conductive part between the first slot and the third position 203 (the second slot)) can form a radiator structure that conforms to a linear antenna, and the fifth resonance is generated by the linear DM mode. In one embodiment, the fifth resonance can be used to expand the working bandwidth of the antenna 200, and the first resonance, the second resonance and the fifth resonance can jointly support an operating frequency band of the electronic device 10. In one embodiment, the resonance point frequency of the fifth resonance can be greater than the resonance point frequency of the first resonance and the resonance point frequency of the second resonance. In one embodiment, the resonance point frequency of the fifth resonance can be less than the resonance point frequency of the first resonance and the resonance point frequency of the second resonance.

[0395] In one embodiment, in a low frequency band (less than or equal to 1 GHz, for example, 698 MHz-960 MHz), the frequency difference between the resonance point frequency of the fifth resonance and the resonance point frequency of the first resonance or the resonance point frequency of the second resonance is greater than or equal to 50 MHz and less than or equal to 160 MHz. In a medium frequency band (in the range of 1 GHz-2 GHz, for example, 1710 MHz-2170 MHz), the frequency difference between the resonance point frequency of the fifth resonance and the resonance point frequency of the first resonance or the resonance point frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. In a high frequency band (in the range of 2 GHz-3 GHz, for example, 2300 MHz-2690 MHz), the frequency difference between the resonance point frequency of the fifth resonance and the resonance point frequency of the first resonance or the resonance point frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0396] It should be understandable. Fig.41 The radiator 210 and the feeder of the antenna 200 can also be replaced by Fig. 9 , Fig.19 , Fig.24 , Fig. 27 , Fig.30 The antenna 200 shown in FIG. 1 is different only in that the conductor between the second position and the third position serves as a parasitic branch.

[0397] For the sake of brevity, Fig.41 The antenna 200 is shown with Fig. 9 , Fig.19 , Fig.24 , Fig. 27 , Fig.30 Similar parts of the antenna 200 shown are not repeated one by one. For example, similar parts include the position of the radiator 210 and its positional relationship with the feeder 221; the position and width of the first gap; the boundary conditions of the feeder 221 (open end or ground end); the shape of the feeder 221, for example, a strip shape; the position where the feeder 221 is set, etc.

[0398] In one embodiment, the second position 202 may be located at a central region of the conductive portion between the first slit and the third position 203 .

[0399] Fig.42 and Fig.43 yes Fig.41 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.42 yes Fig.41 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.43 yes Fig.41 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0400] like Fig.42 As shown, at 1.6GHz to 2.4GHz, compared to Fig. 9 , Fig.19 , Fig.24 , Fig. 27 , Fig.30 The antenna shown, Fig.41 The antenna shown can additionally generate a fifth resonance (near 2.24 GHz), with S11 less than -4 dB as the limit, and an operating bandwidth greater than Fig.19 The operating bandwidth of the antenna is shown.

[0401] like Fig.43 As shown, no efficiency pit is generated near the fifth resonance that the antenna can additionally generate, and the antenna has good radiation efficiency and system efficiency within the working frequency band formed by the first resonance, the second resonance and the fifth resonance.

[0402] Figures 44 to 46 yes Fig.41 The current distribution diagram of the antenna 200 in the electronic device 10 is shown. Fig.44 yes Fig.41 FIG. 5 is a schematic diagram of current distribution of the antenna at the first resonance point (1.79 GHz). Fig.45 yes Fig.30 FIG. 5 is a schematic diagram of current distribution of the antenna at the second resonance point (2.01 GHz). Fig.46 yes Fig.30 FIG. 5 is a schematic diagram of current distribution of the antenna at the fifth resonance point (2.24 GHz).

[0403] like Fig.44 and 45 As shown, the first resonance and the second resonance are both generated by the slot CM mode of the slot antenna formed by the conductor part between the first position and the second position, and the currents on the radiators on both sides of the first slot are in the same direction (the current on the radiator between the first position 201 and the first slot is in the same direction as the current on the radiator between the first slot and the second position 202).

[0404] like Fig.46 As shown, the fifth resonance is generated by the radiator structure (linear DM mode) of a linear antenna formed by the conductive part between the first slot and the third position, and the currents on the conductor parts on both sides of the second position are in the same direction (the current on the radiator between the first slot and the second position 202 and the current on the parasitic branch between the second position 202 and the third position are in the same direction).

[0405] Fig.47 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0406] It should be understood that Fig.41 In the antenna 200 shown in FIG. 1 , the first end and the second end of the feeder 221 are open ends, and the feeder 221 forms a dipole antenna. Fig.47 In the antenna 200 shown, the first end of the feed element 221 is an open end and the second end is a ground end. The feed element 221 can form a structure similar to a monopole or a left-handed antenna. The feed element 221 with this structure can also excite the antenna 200 to generate the above-mentioned first resonance, second resonance and fifth resonance.

[0407] In one embodiment, the antenna 200 may further include an electronic component 246 , which may be coupled between the conductor on one side of the first slot and the ground.

[0408] It should be understood that, since the first end of the feeder is an open end and the second end is a grounded end, the antenna structure has poor symmetry, and therefore, the excitation of the third resonance generated by the slot DM mode (the conductor portion between the first position and the second position forms a radiator structure that conforms to the slot antenna) is enhanced. The electronic component 246 can be used to adjust the resonance point frequency of the third resonance so that the first resonance, the second resonance, and the third resonance jointly support an operating frequency band of the electronic device 10.

[0409] at the same time, Fig.47 The technical solution shown can also be applied to the above Fig. 9 , Fig.19 , Fig.24 , Fig. 27 , Fig.30 , Fig.41 The antenna 200 shown in FIG. 2 is not described in detail for the sake of brevity.

[0410] For the sake of brevity, Fig.47 The antenna 200 is shown with Fig. 9 , Fig.19 , Fig.24 , Fig. 27 , Fig.30 , Fig.41 Similar parts of the antenna 200 shown are not repeated one by one. For example, similar parts include the position of the radiator 210 and its positional relationship with the feeder 221; the position and width of the first gap; the shape of the feeder 221, for example, a strip shape; the position where the feeder 221 is set, etc.

[0411] At the same time, Fig.41 as well as Fig.47 The technical solution shown in the figure uses the conductive part between the first slot and the third position 203 (the second slot) to form a radiator structure that conforms to the linear antenna, and generates the fifth resonance by the linear DM mode. This technical solution can be applied to the above Figures 9 to 40 In any of the embodiments shown.

[0412] Fig.48 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0413] like Fig.48 As shown, the frame 11 is coupled with the floor 300 at the first position 201, and a first gap is provided at the second position 202. The first end of the radiator 210 is a grounded end, and the second end is an open end. The first end and the second end of the radiator 210 correspond to the first position 201 and the second position 202 of the frame 11, respectively. The first end and the second end of the feeder 221 are open ends.

[0414] In one embodiment, the ratio of the length of the overlapping portion between the projection of the feeding element 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 50%.

[0415] In one embodiment, the ratio of the length of the overlapping portion of the feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210) to the length of the feeder 221 is greater than or equal to 20%. In one embodiment, the ratio of the length of the overlapping portion of the feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210) to the length of the feeder 221 is greater than or equal to 30%.

[0416] In one embodiment, the distance between the projection of the first slit on the feed 221 and the midpoint of the feed 221 is less than or equal to one quarter of the length of the feed 221. In one embodiment, the projection of the first slit on the feed 221 is in the central area of ​​the feed 221.

[0417] The radiator 210 has a weaker current and a stronger electric field in the vicinity of the first slit. The feeder 221 has a weaker electric field and a stronger current in the vicinity of the center. The area (first slit) where the radiator 210 has a stronger electric field (stronger magnetic field) is close to the area (midpoint) where the feeder 221 has a weaker electric field (stronger magnetic field), which can make the first resonance and the second resonance more balanced.

[0418] It should be understood that Fig.48 The difference between the antenna 200 shown in the embodiment described above and the antenna 200 shown in the embodiment described above is that the second end of the radiator 210 is an open end.

[0419] In the antenna 200 shown in the above embodiment, the first end and the second end of the radiator 210 are grounded ends, and the radiator 210 can form a radiator structure that conforms to a slot antenna. Fig.48In the antenna 200 shown, the first end of the radiator 210 is a grounded end and the second end is an open end. When an electrical signal is fed into the feeding point, a current in the same direction may be generated on the radiator 210, and the radiator 210 may be stimulated to generate a first resonance and a second resonance. In addition, since the first end of the radiator 210 is a grounded end and the second end is an open end, the size of the radiator 210 may be further reduced (for example, it may be regarded as being reduced from a half-wavelength structure to a quarter-wavelength structure), thereby achieving miniaturization.

[0420] In one embodiment, the electrical length of the radiator 210 is one quarter of the first wavelength, the electrical length of the feeder 221 is one half of the first wavelength, and the first wavelength is the wavelength corresponding to the center frequency between the resonance point of the first resonance and the resonance point of the second resonance.

[0421] In one embodiment, the electrical length of the radiator 210 is half of the electrical length of the feeder 221, and correspondingly, the physical length of the radiator 210 is approximately half of the physical length of the feeder 221. Since the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease the physical length when the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1≤L2≤L1×200%, or the physical length L2 of the feeder 221 is between 1.4 times and 2.6 times (the range includes the end points) of the physical length L1 of the radiator 210. In one embodiment, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1×200%≤L2≤L1×300%.

[0422] For the sake of brevity, Fig.48 Parts of the antenna 200 shown in the figure that are similar to the antenna 200 shown in the above embodiment are not described one by one. For example, the similar parts include the radiator 210 and the feeding element 221 for generating the first resonance and the second resonance; the first resonance and the second resonance can be used to jointly support an operating frequency band; the width of the first gap; the shape of the feeding element 221, for example, a strip shape; the position where the feeding element 221 is set, etc.

[0423] Fig.49 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0424] like Fig.49 As shown, the frame 11 is coupled to the floor 300 at a first position 201 and a second position 202, the first end and the second end of the radiator 210 are grounded, and the radiator 210 forms a radiator structure that conforms to a slot antenna. The frame 11 has a first gap between the first position 201 and the second position 202. In one embodiment, the first gap is located in the center area between the first position 201 and the second position 202.

[0425] The antenna 200 may include a first feeder 221 , a second feeder 222 , and a radiator 210 .

[0426] The radiator 210 is a conductive portion of the frame 11 between the first position 201 and the second position 202. The first end and the second end of the radiator 210 are open ends.

[0427] The first feeder 221, the second feeder 222 and the radiator 210 are spaced apart from each other. The radiator 210 at least partially overlaps with the first feeder 221 and the second feeder 222 along a first direction, and the first direction is perpendicular to the extension direction of the first radiator 210 (for example, the y direction). In one embodiment, the extension direction of the radiator 210 is in the same direction as the extension direction of the feeder 221. The first end and the second end of the first feeder 221 are grounded ends. The first end and the second end of the second feeder 222 are open ends.

[0428] The antenna 200 further includes a first feeding circuit 231 and a second feeding circuit 232. The first feeding element 221 includes a first feeding point, and the first feeding circuit 231 is coupled to the first feeding point. The second feeding element 222 includes a second feeding point, and the second feeding circuit 232 is coupled to the second feeding point.

[0429] It should be understood that in the above embodiments, the radiator and the feeding element are described as one-to-one. Fig.49 In the illustrated embodiment, the radiator can be excited by two feeding elements to generate resonance, thereby expanding the bandwidth while reducing the size of the antenna 200.

[0430] The antenna 200 may include a first antenna and a second antenna. The radiator 210 and the first feeder 221 may form the first antenna. The radiator 210 and the second feeder 222 may form the second antenna.

[0431] In the first antenna, the radiator 210 forms a radiator structure that conforms to a slot antenna. The electrical signal is fed into the radiator 210 through the first feeding unit. The radiator 210 can generate a first resonance and a second resonance by the slot DM mode. The first resonance and the second resonance are used to jointly support the first working frequency band of the electronic device 10.

[0432] In the second antenna, the radiator 210 forms a radiator structure that conforms to the slot antenna. The electrical signal is fed into the radiator 210 through the second feeding unit. The radiator 210 can generate a third resonance and a fourth resonance by the slot CM mode. The third resonance and the fourth resonance are used to jointly support the second operating frequency band of the electronic device 10.

[0433] In one embodiment, the first resonance and the second resonance can be close to each other so that the first resonance and the second resonance are used to jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the first resonance and the second resonance is in the range of 5% to 20% of the low frequency resonance frequency or the high frequency resonance frequency (greater than or equal to 5%, and less than or equal to 20%). In one embodiment, in the low frequency band (less than or equal to 1 GHz, for example, 698 MHz-960 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 50 MHz and less than or equal to 160 MHz. In the medium frequency band (in the range of 1 GHz-2 GHz, for example, 1710 MHz-2170 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high frequency band (within the range of 2 GHz-3 GHz, for example, 2300 MHz-2690 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0434] In one embodiment, the third resonance and the fourth resonance can be close to each other so that the third resonance and the fourth resonance are used to jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the third resonance and the fourth resonance is in the range of 5% to 20% of the low frequency resonance frequency or the high frequency resonance frequency (greater than or equal to 5%, and less than or equal to 20%). In one embodiment, in the low frequency band (less than or equal to 1 GHz, for example, 698 MHz-960 MHz), the frequency difference between the resonance point frequency of the third resonance and / or the resonance point frequency of the fourth resonance is greater than or equal to 50 MHz and less than or equal to 160 MHz. In the medium frequency band (in the range of 1 GHz-2 GHz, for example, 1710 MHz-2170 MHz), the frequency difference between the resonance point frequency of the third resonance and / or the resonance point frequency of the fourth resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high frequency band (within the range of 2 GHz-3 GHz, for example, 2300 MHz-2690 MHz), the frequency difference between the resonance point frequency of the third resonance and / or the resonance point frequency of the fourth resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0435] In one embodiment, at the resonance point of the first resonance, the currents on the radiators 210 on both sides of the first slot are reversed. At the resonance point of the second resonance, the currents on the radiators 210 on both sides of the first slot are reversed.

[0436] In one embodiment, at the resonance point of the first resonance, the currents on the first feeders 221 on both sides of the center are reversed. At the resonance point of the second resonance, the currents on the first feeders 221 on both sides of the center are reversed. It should be understood that the currents on the first feeder 221 are reversely distributed and can work in the slot DM mode.

[0437] In one embodiment, at the resonance point of the third resonance, the currents on the radiators 210 on both sides of the first slot are in the same direction. At the resonance point of the fourth resonance, the currents on the radiators 210 on both sides of the first slot are in the same direction.

[0438] In one embodiment, at the resonance point of the third resonance, the currents on the second feeder 222 are in the same direction. At the resonance point of the fourth resonance, the currents on the second feeder 222 are in the same direction. It should be understood that the currents on the second feeder 222 are distributed in the same direction and can work in the line DM mode.

[0439] In one embodiment, both ends of the first feeding element 221 are grounded, the electrical length of the radiator 210 is the same as the electrical length of the feeding element 221, and both are half of the first wavelength, where the first wavelength is the wavelength corresponding to the center frequency between the resonance point of the first resonance and the resonance point of the second resonance.

[0440] In one embodiment, the electrical length of the radiator 210 is the same as the electrical length of the first feeder 221, and correspondingly, the physical length of the radiator 210 is substantially the same as the physical length of the first feeder 221. Since the electronic components coupled to the first feeder 221 / radiator 210 can increase or decrease the physical length when the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L2 of the first feeder 221 satisfy: L1×50%≤L2≤L1. In one embodiment, the physical length L1 of the radiator 210 and the physical length L2 of the first feeder 221 satisfy: L1≤L2≤L1×150%.

[0441] In one embodiment, both ends of the second feeding element 222 are open ends, the electrical length of the radiator 210 is the same as the electrical length of the second feeding element 222, and both are half of the second wavelength, and the second wavelength is the wavelength corresponding to the center frequency of the third resonance and the fourth resonance.

[0442] In one embodiment, the electrical length of the radiator 210 is the same as the electrical length of the second feeder 222, and correspondingly, the physical length of the radiator 210 is substantially the same as the physical length of the second feeder 222. Since the electronic components coupled to the second feeder 222 / radiator 210 can increase or decrease the physical length when the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L3 of the second feeder 222 satisfy: L1×50%≤L3≤L1. In one embodiment, the physical length L1 of the radiator 210 and the physical length L3 of the second feeder 222 satisfy: L1≤L3≤L1×150%.

[0443] In one embodiment, in the electronic device 10, the first feeder 221 and the second feeder 222 are arranged at intervals, which can be understood as the first feeder 221 and the second feeder 222 are not arranged on the same surface. For example, the first feeder 221 and the second feeder 222 can be arranged on the upper surface and the lower surface of the bracket, respectively. Alternatively, the first feeder 221 and the second feeder 222 can be arranged on different surfaces of a plurality of dielectric layers included in the PCB, respectively. Alternatively, the first feeder 221 and the second feeder 222 are arranged on the surface of the bracket and the surface of the PCB, respectively, or are arranged on the inner surface of the back cover and the surface of the bracket, respectively.

[0444] In one embodiment, the frame 11 may include a first side and a second side that intersect at an angle, the first position 201 is located at the first side, and the second position 202 is located at the second side. The length of the radiator 210 on the first side is greater than or equal to three quarters of the length of the radiator 210, so that the antenna 200 has better radiation characteristics.

[0445] Fig.50 and Fig.51 yes Fig.49 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.50 yes Fig.49 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.51 yes Fig.49 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0446] like Fig.50 As shown, the first antenna (S11) can resonate at around 5.1 GHz and 5.7 GHz, which can correspond to the first resonance and the second resonance in the above embodiment, respectively. The second antenna (S22) can resonate at around 3.3 GHz and 3.9 GHz, which can correspond to the third resonance and the fourth resonance in the above embodiment, respectively.

[0447] The first resonance and the second resonance are generated by the slot DM mode, and the third resonance and the fourth resonance are generated by the slot CM mode. Therefore, there is good isolation between the first antenna and the second antenna. With S11 / S22<-4dB as the limit, within their respective resonant frequency bands, the isolation (S12) between the first antenna and the second antenna is less than -11dB.

[0448] like Fig.51 As shown, the third resonance and the fourth resonance are both generated by the slot CM mode. Since the slot CM mode has higher radiation efficiency and system efficiency, the second antenna does not generate pits in the working frequency band formed by the third resonance and the fourth resonance, and has better radiation efficiency and system efficiency. The first resonance and the second resonance are both generated by the slot DM mode. Since the radiation efficiency and system efficiency of the slot DM mode intersecting the slot CM mode are lower, the radiation efficiency and system efficiency of the second antenna are higher than those of the first antenna.

[0449] Fig.52 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0450] like Fig.52 As shown, the electronic device 10 includes a frame 11 , an antenna 200 and a floor 300 .

[0451] At least a portion of the frame 11 is spaced apart from the floor 300. The frame 11 includes a first position 201 and a second position 202. The frame 11 has a first gap and a second gap respectively formed in the first position 201 and the second position 202, and includes a grounding point between the first position 201 and the second position 202, where the frame 11 is coupled to the floor 300. In one embodiment, the grounding point is located in a central area between the first position 201 and the second position 202.

[0452] In one embodiment, the grounding point is coupled with the floor 300 to achieve grounding. At the grounding point, the frame 11 can be directly electrically connected to the floor 300 through a spring, or can be electrically connected to the floor 300 through an inductor, or can be electrically connected to the floor 300 through a structural member of the middle frame (for example, a connecting rib). Electrically connecting the floor 300 through the structural member of the middle frame can be understood as at least a portion of the frame 11 and the floor 300 being an integrated structure.

[0453] In one embodiment, the grounding point can be electrically connected to the floor 300 through a grounding member (eg, spring, connecting rib). The width of the grounding member connected to the frame 11 is greater than or equal to 1 mm and less than or equal to 10 mm.

[0454] The antenna 200 includes a radiator 210 and a feeder 221. The radiator 210 and the feeder 221 are arranged at intervals, and the radiator 210 and the feeder 221 at least partially overlap along a first direction, and the first direction is perpendicular to the extension direction of the radiator 210 (for example, the y direction). The extension direction of the radiator 210 is in the same direction as the extension direction of the feeder 221. The radiator 210 is a conductive part of the frame 11 between the first position 201 and the second position 202. The first end and the second end of the radiator 210 are open ends, wherein the first end and the second end of the radiator 210 correspond to the first position 201 and the second position 202 of the frame 11 respectively. The first end and the second end of the feeder 221 are grounded ends.

[0455] The extension direction of the radiator 210 and the extension direction of the feeding element 221 being in the same direction can be understood as an angle between the extension direction of the radiator 210 and the extension direction of the feeding element 221 being less than or equal to a first threshold, for example, less than or equal to 10°.

[0456] In one embodiment, the first end and the second end of the feeder 221 are coupled to the floor 300 to achieve grounding. The feeder 221 can be electrically connected to the floor 300 via a spring or an inductor at the first end and the second end of the feeder 221.

[0457] The radiator 210 and the feeder 221 are arranged at a distance, which can be understood as the radiator 210 and the feeder 221 are not directly connected and form a gap. In the embodiment of the present application, the interval arrangement can be understood accordingly. The radiator 210 and the feeder 221 are coupled through the gap.

[0458] The antenna 200 further includes a feeding circuit 231 , the feeding element 221 includes a feeding point 211 , and the feeding circuit 231 is coupled to the feeding point 211 .

[0459] The feeder 221 and the radiator 210 are used to generate a first resonance and a second resonance. In one embodiment, the first resonance and the second resonance are used to jointly support an operating frequency band of the electronic device 10.

[0460] Among them, an operating frequency band of the electronic device 10 includes a frequency range, such as a low frequency band (LB) (698MHz-960MHz), a middle frequency band (MB) (1710MHz-2170MHz) or a high frequency band (HB) (2300MHz-2690MHz) in a cellular network. Taking an operating frequency band of the electronic device 10 as LB (698MHz-960MHz) as an example, the operating frequency band may include multiple communication frequency bands within the frequency range, such as B5, B8, etc., which can be understood accordingly in the embodiments of the present application.

[0461] It should be understood that the radiator 210 can form a radiator structure that conforms to a linear antenna, for example, the linear antenna can be a T-antenna or a T-shaped antenna. When the feeding circuit 231 feeds an electrical signal, the antenna 200 can generate a first resonance and a second resonance by the radiator 210 and the feeder 221. In the electronic device 10, compared with the radiator 210 (the conductive part in the frame 11 is used as the radiator 210), the radiation environment of the feeder 221 is poor (for example, the clearance is poor and the distance to the adjacent metal parts is close). However, the feeder 221 can generate a new current path for the radiator 210, thereby generating a new resonance (for example, a second resonance) to expand the working bandwidth of the antenna 200.

[0462] At the same time, since the first end and the second end of the radiator 210 are open ends, the radiator 210 has a strong electric field and a weak current in the vicinity of the first end and the second end. The first end and the second end of the feeder 221 are grounded ends, and the feeder 221 has a weak electric field and a strong current in the vicinity of the first end and the second end. The area of ​​the radiator 210 with a strong electric field (strong magnetic field) is close to the area of ​​the feeder 221 with a weak electric field (strong magnetic field), so that the first resonance and the second resonance can be more balanced, and no pit in the radiation efficiency will be generated in the first working frequency band jointly supported by the first resonance and the second resonance, thereby improving the radiation characteristics of the antenna 200 and enabling the electronic device 10 to have better communication performance.

[0463] In one embodiment, the first resonance and the second resonance can be close to each other so that the first resonance and the second resonance are used to jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the first resonance and the second resonance is in the range of 5% to 20% of the low frequency resonance frequency or the high frequency resonance frequency (greater than or equal to 5%, and less than or equal to 20%). In one embodiment, in the low frequency band (less than or equal to 1 GHz, for example, 698 MHz-960 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 50 and less than or equal to 160 MHz. In the intermediate frequency band (in the range of 1 GHz-2 GHz, for example, 1710 MHz-2170 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high frequency band (within the range of 2 GHz-3 GHz, for example, 2300 MHz-2690 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0464] In one embodiment, at the resonance point of the first resonance, the current on the first radiator 210 on both sides of the grounding point is reversed, and the radiators 210 on both sides of the grounding point each have a reverse current (or in other words, the radiator has a current reverse point). At the resonance point of the second resonance, the current on the first radiator 210 on both sides of the grounding point is reversed, and the radiators 210 on both sides of the grounding point each have a reverse current (or in other words, the radiator has a current reverse point).

[0465] It should be understood that both the first resonance and the second resonance can be generated by the line CM mode. Since the line CM mode has higher radiation efficiency and system efficiency, the antenna has better radiation efficiency and system efficiency within the working frequency band formed by the first resonance and the second resonance.

[0466] In one embodiment, at the resonance point of the first resonance and the resonance point of the second resonance, the currents on both sides of the center of the feeding element 221 are reversed.

[0467] It should be understood that the current on the feed element 221 may be generated by the slot DM mode. The radiator 210 generates a current in the same direction through coupling with the current in the same direction on the feed element 221, thereby generating a second resonance.

[0468] In one embodiment, the feed 221 includes a connection point 241. The antenna 200 may further include an electronic component 242. A first end of the electronic component 242 is coupled to the connection point 241, and a second end of the electronic component 242 is coupled to the floor 300.

[0469] It should be understood that the electronic component 242 can be used to adjust the resonance point frequency of the second resonance, so that the first resonance and the second resonance can jointly support an operating frequency band of the electronic device 10 .

[0470] In one embodiment, the ratio of the length of the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 25%. In one embodiment, the ratio of the length of the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 50%.

[0471] In one embodiment, the ratio of the length of the overlapping portion of the feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210) to the length of the feeder 221 is greater than or equal to 50%. In one embodiment, the ratio of the length of the overlapping portion of the feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210) to the length of the feeder 221 is greater than or equal to 75%.

[0472] It should be understood that when the ratio of the length of the projection to the length of the feeder 221 (or the ratio of the length of the projection to the length of the radiator 210) is within the above range, the radiator 210 can be better excited and the antenna 200 has better radiation characteristics. When the first position 201 and the second position 202 are respectively located at the first side and the second side of the frame that intersect at an angle, the extension direction of the radiator 210 includes the extension direction of the first side (for example, the x direction) and the extension direction of the second side (for example, the y direction), and the length of the overlapping portion can be understood as the sum of the length of the overlapping portion in the extension direction of the first side (for example, the x direction) and the length of the overlapping portion in the extension direction of the second side (for example, the y direction).

[0473] In one embodiment, the lengths of the radiators on both sides of the grounding point are approximately the same, and the ratio of the lengths of the radiators on both sides of the grounding point (the length of the conductor portion of the frame between the first position 201 and the grounding point, and the length of the conductor portion of the frame between the second position 202 and the grounding point) is greater than or equal to 0.7 and less than or equal to 1.3.

[0474] It should be understood that when the lengths of the radiators on both sides of the grounding point are roughly the same, the structure of the antenna 200 is more symmetrical. As the symmetry of the antenna 200 increases, the line CM mode can be better excited, so that the antenna 200 can have better radiation characteristics (for example, bandwidth, radiation efficiency, etc.) in the first resonance and the second resonance.

[0475] In one embodiment, the distance between the projection of the ground point on the feeder 221 and the center of the feeder 221 is less than or equal to one quarter of the length of the feeder 221. In one embodiment, the projection of the ground point on the feeder 221 is in the central area of ​​the feeder 221.

[0476] It should be understood that when the feeder 221 is roughly aligned with the radiator 210, the structure of the antenna 200 is more symmetrical. As the symmetry of the antenna 200 increases, the slot CM mode can be better excited, so that the antenna 200 can have better radiation characteristics (for example, bandwidth, radiation efficiency, etc.) at the first resonance and the second resonance. Among them, the alignment of the feeder 221 and the radiator 210 can be understood as the first radiator 210 is symmetrical along the virtual axis of the feeder 221, and the lengths of the feeders 221 on both sides of the virtual axis are the same.

[0477] At the same time, the radiator 210 has a weaker electric field and a stronger current in the area near the grounding point. The feeder 221 has a weaker current and a stronger electric field in the area near the center. The area (grounding point) where the radiator 210 has a weaker electric field (stronger magnetic field) is close to the area (midpoint) where the feeder 221 has a stronger electric field (stronger magnetic field), which can make the first resonance and the second resonance more balanced.

[0478] In one embodiment, the projection of the feeder 221 on the frame 11 completely overlaps with the radiator 210. In one embodiment, the ratio of the lengths of the radiators on both sides of the grounding point is greater than or equal to 0.9 and less than or equal to 1.1. In one embodiment, the coupling modes of the two ends of the feeder 221 and the floor 300 are the same (for example, the first end and the second end of the feeder 221 are coupled to the floor 300 through inductance, or coupled to the floor 300 through connecting ribs). In one embodiment, the projection of the grounding point on the feeder 221 coincides with the center of the feeder 221.

[0479] In one embodiment, the projection of the feeding element 221 on the frame 11 is located between the first position 201 and the second position 202 .

[0480] It should be understood that the increase in the symmetry of the antenna 200 can better excite the slot CM mode, so that the antenna 200 can have better radiation characteristics (eg, bandwidth, radiation efficiency, etc.) at the first resonance and the second resonance.

[0481] In one embodiment, both ends of the feeding element 221 are grounded, the electrical length of the radiator 210 is the same as the electrical length of the feeding element 221, and both are half of the first wavelength, where the first wavelength is the wavelength corresponding to the center frequency between the resonance point of the first resonance and the resonance point of the second resonance.

[0482] In one embodiment, the electrical length of the radiator 210 is substantially the same as the electrical length of the feeder 221. In one embodiment, the physical length of the radiator 210 is substantially the same as the physical length of the feeder 221. Since the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease the physical length while the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1×50%≤L2≤L1. In one embodiment, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1≤L2≤L1×150%.

[0483] In one embodiment, the physical length L1 of the radiator 210 may be understood as the length of the conductive portion of the frame between the first position 201 and the second position 202 , for example, the sum of the physical lengths of the radiator 210 on both sides of the grounding point.

[0484] In one embodiment, the distance D between the feeder 221 and the radiator 210 is less than or equal to 5 mm, so that there is a good coupling characteristic between the feeder 221 and the radiator 210. In one embodiment, the distance D between the feeder 221 and the radiator 210 is less than or equal to 2 mm.

[0485] It should be understood that the distance D between the feeder 221 and the radiator 210 may be understood as the minimum value of the distance between a point on the feeder 221 and a point on the radiator 210 .

[0486] In one embodiment, the electronic device 10 may further include a bracket. The feeder 221 may be disposed on the surface of the bracket, and at least a portion of the bracket may be disposed between the PCB and the back cover to support the feeder 221. The metal layer in the PCB may serve as the floor 300 in the embodiment of the present application, and the floor may also be a middle frame or other metal layer of the electronic device.

[0487] In one embodiment, the feeder on the bracket may be located above the PCB. For example, the projection of the feeder 221 in a direction perpendicular to the PCB completely overlaps with the PCB. In one embodiment, the feeder 221 on the bracket may be located at an edge of the PCB. For example, the projection of the feeder 221 in a first direction partially overlaps with the PCB. In one embodiment, the feeder 221 on the bracket may be located above a hollow area of ​​the PCB or a gap between the PCB and the frame. For example, the projection of the feeder 221 in a direction perpendicular to the PCB does not overlap with the PCB.

[0488] In one embodiment, the distance H1 between the bracket and the PCB may be greater than or equal to 0.1 mm and less than or equal to 3 mm. In one embodiment, the distance H2 between the bracket and the back cover may be greater than or equal to 0.1 mm and less than or equal to 1 mm.

[0489] In one embodiment, the feeder 221 may be disposed on the rear cover surface (eg, the surface facing the PCB). In one embodiment, the feeder 221 may also be disposed on the surface of the PCB, and the embodiment of the present application does not limit the location of the feeder 221.

[0490] It should be understood that for the sake of brevity, Fig.52 In the technical scheme shown, the conductive part of the frame 11 is used as the radiator 210, and the feeder 221 is a non-frame structure (for example, arranged on a bracket, a PCB or a back cover) for illustration. In actual production or design, the relative positions of the radiator 210 and the feeder 221 can be interchanged. For example, the conductive part of the frame 11 is used as the feeder 221, and the radiator 210 is a non-frame structure (for example, arranged on a bracket, a PCB or a back cover).

[0491] In one embodiment, the feeder 221 is in a strip shape. "Strip" can be understood as a length much greater than the width, for example, the length is greater than three times, or six times the width. In one embodiment, the smallest dimension of the three-dimensional dimensions of the feeder 221 is the thickness. For example, when the feeder 221 can be set on the surface of the bracket 140, the dimension in the direction perpendicular to the surface of the bracket 140 is the thickness. The dimensions of the three dimensions of the feeder 221 except the thickness can be understood as the length and width.

[0492] In one embodiment, the width of the feeder 221 may be less than or equal to 3 mm. In one embodiment, the width of the feeder 221 may be less than or equal to 2 mm.

[0493] Fig.53 and Fig.54 yes Fig.52 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.53 yes Fig.52 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.54 yes Fig.52 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0494] like Fig.53 As shown, the antenna 200 can generate resonances near 1.9 GHz and 2.2 GHz, wherein the resonance generated near 1.8 GHz may correspond to the first resonance in the above embodiment, and the resonance generated near 2.2 GHz may correspond to the second resonance in the above embodiment.

[0495] like Fig.54 As shown, the first resonance and the second resonance can both be generated by the line CM mode. Since the line CM mode has higher radiation efficiency and system efficiency, the antenna does not produce pits in the working frequency band formed by the first resonance and the second resonance, and has better radiation efficiency and system efficiency. Taking the system efficiency>-2dB as an example, the system efficiency bandwidth of the antenna 200 is about 500MHz.

[0496] Fig.55 and Fig.56 yes Fig.52 The current and electric field distribution diagram of the antenna 200 in the electronic device 10 is shown. Fig.55 yes Fig.52 FIG. 5 is a schematic diagram of current distribution of the antenna at the first resonance point (1.88 GHz). Fig.56 yes Fig.52 FIG. 5 is a schematic diagram of current distribution of the antenna at the second resonance point (2.16 GHz).

[0497] like Fig.55As shown, the current on the first radiator 210 on both sides of the grounding point is reversed, and the current on both sides of the center of the feeder is reversed. The current distribution on the radiator conforms to the current characteristics of the line CM mode. The current distribution on the feeder conforms to the current characteristics of the slot DM mode.

[0498] like Fig.56 As shown, the current on the first radiator 210 on both sides of the grounding point is reversed, and the current on both sides of the center of the feeder is reversed. The current distribution on the radiator conforms to the current characteristics of the line CM mode. The current distribution on the feeder conforms to the current characteristics of the slot DM mode.

[0499] Fig.57 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0500] like Fig.57 As shown, the first end and the second end of the feeder 221 are grounded. The feeder 221 may have a third slit. In one embodiment, the third slit may be located in the center area of ​​the feeder 221.

[0501] In one embodiment, the lengths of the feeders 221 on both sides of the third slit are substantially the same. In one embodiment, the different lengths of the feeders 221 on both sides of the third slit can be understood as the difference in length of the feeders 221 on both sides of the third slit is less than or equal to 5 mm.

[0502] It should be understood that Fig.57 The antenna 200 is shown with Fig.52 The difference between the antenna 200 shown in the figure is that the feeding element 221 further includes a third slot.

[0503] For the sake of brevity, Fig.57 The antenna 200 is shown with Fig.52 Similar parts of the antenna 200 shown are no longer described one by one. For example, similar parts include the position of the radiator 210 and its positional relationship with the feeder 221; the feeder 221 and the radiator 210 are used to generate the first resonance and the second resonance; the first resonance and the second resonance can be used to jointly support an operating frequency band; the position and width of the first gap; the boundary conditions of the feeder 221 (open end or ground end); the shape of the feeder 221, for example, a strip shape; the position where the feeder 221 is set; and the like.

[0504] Fig.57 In the antenna 200 shown, the feeding element 221 can have both the slot DM mode and the slot CM mode. When the feeding circuit 231 feeds an electrical signal, the antenna 200 can generate a first resonance, a second resonance, a third resonance and a fourth resonance to expand the working bandwidth of the antenna 200.

[0505] In one embodiment, the first resonance and the second resonance may correspond to a linear CM mode, and the third resonance and the fourth resonance may correspond to a linear DM mode.

[0506] In one embodiment, at the resonance point of the first resonance, the currents on the radiators 210 on both sides of the grounding point are reversed, and the radiators 210 on both sides of the grounding point each have a reverse current (or, in other words, the radiators have a current reverse point). At the resonance point of the second resonance, the currents on the radiators 210 on both sides of the grounding point are reversed, and the radiators 210 on both sides of the grounding point each have a reverse current (or, in other words, the radiators have a current reverse point).

[0507] In one embodiment, at the resonance point of the third resonance, the currents on the radiators 210 on both sides of the grounding point are in the same direction, and the radiators 210 on both sides of the grounding point each have currents in the same direction (or, there is no current reversal point on the radiator). At the resonance point of the fourth resonance, the currents on the radiators 210 on both sides of the grounding point are in the same direction, and the radiators 210 on both sides of the grounding point each have currents in the same direction (or, there is no current reversal point on the radiator).

[0508] In one embodiment, the feeding point 211 may be located at the first side of the second slot (between the second slot and the first end of the feeding element 221), and a first capacitor may be provided between the feeding circuit 231 and the feeding element 221. In one embodiment, the capacitance value of the first capacitor is less than or equal to 1.5 pF.

[0509] In one embodiment, the feeder 221 may include a connection point 241 at the second side of the second slot (between the second slot and the second end of the feeder 221 ). The first end of the second capacitor is coupled to the connection point, and the second end of the second capacitor is coupled to the floor 300 .

[0510] Fig.58 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0511] like Fig.58 As shown, the first end of the feeding element 221 is a ground end, and the second end is an open end. The first end of the feeding element 221 is coupled to the floor 300 .

[0512] In one embodiment, the distance between the feeding point 211 and the end of the first end of the feeding element 221 is different from the distance between the feeding point 211 and the end of the second end of the feeding element 221, and the feeding element 221 can feed the electrical signal in a biased feeding manner.

[0513] In one embodiment, the distance between the feed point 211 and the end of the first end of the feed element 221 is less than half of the length of the feed element 221. The feed element 221 may form a structure similar to a monopole or a left-handed antenna.

[0514] It should be understood that Fig.58 The antenna 200 is shown with Fig.52 The difference of the antenna 200 shown includes that the second end of the feed 221 is an open end. Fig.52 In the antenna 200 shown, the first end and the second end of the feeding element 221 are grounded ends, and the feeding element 221 forms a radiator structure that conforms to a slot antenna. Fig.58 In the antenna 200 shown, the first end of the feeder 221 is grounded and the second end is open. The feeder 221 can form a structure similar to a left-hand antenna. When an electrical signal is fed into the feed point, a current in the same direction can also be generated on the radiator 210, similar to Fig.52 Part of the current on the feeder 221 shown can also excite the radiator 210 to generate a second resonance. In addition, since the first end of the feeder 221 is a grounded end and the second end is an open end, the size of the feeder 221 can be further reduced to achieve miniaturization.

[0515] In one embodiment, the distance between the projection of the grounding point on the feeder 221 and the open end (the second end) of the feeder 221 is less than or equal to one-half of the length of the feeder 221. In one embodiment, the distance between the projection of the open end (the end of the second end) of the feeder 221 on the frame 11 and the grounding point is less than or equal to one-quarter of the length of the radiator 210.

[0516] It should be understood that the radiator 210 has a weaker electric field and a stronger current in the area near the grounding point. The area near the open end of the feeder 221 has a weaker current and a stronger electric field. The area (grounding point) where the radiator 210 has a weaker electric field (stronger magnetic field) is close to the area (open end) where the feeder 221 has a stronger electric field (stronger magnetic field), which can make the first resonance and the second resonance more balanced.

[0517] In one embodiment, the projection of the feeding element 221 on the frame 11 is located between the first position and the second position.

[0518] In one embodiment, the ratio of the length of the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 12.5%. In one embodiment, the ratio of the length of the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 25%.

[0519] In one embodiment, the ratio of the length of the overlapping portion of the feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 ) to the length of the feeder 221 is greater than or equal to 50%.

[0520] In one embodiment, the electrical length of the feeder 221 is one quarter of the first wavelength, the electrical length of the radiator 210 is one half of the first wavelength, and the first wavelength is the wavelength corresponding to the center frequency between the resonance point of the first resonance and the resonance point of the second resonance.

[0521] In one embodiment, the electrical length of the feeder 221 is half of the electrical length of the radiator 210, and correspondingly, the physical length of the feeder 221 is approximately half of the physical length of the radiator 210. Since the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease the physical length when the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1×25%≤L2≤L1×50%. In one embodiment, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1×50%≤L2≤L1×75%.

[0522] For the sake of brevity, Fig.58 The antenna 200 is shown with Fig. 9 Similar parts of the antenna 200 shown are not described one by one. For example, similar parts include: the feeder 221 and the radiator 210 are used to generate the first resonance and the second resonance, and the first resonance and the second resonance are used to jointly support an operating frequency band; the position and width of the first slot; the shape of the feeder 221, for example, a strip shape; the position where the feeder 221 is set, etc.

[0523] It should be understood that the antenna 200 (eg, Fig.52 ) can all adopt a structure in which the first end is a ground end and the second end is an open end to reduce the size, and the embodiments of the present application do not limit this.

[0524] Fig.59 and Fig.60 yes Fig.58 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.59 yes Fig.58 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.60 yes Fig.58 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0525] like Fig.59 As shown, compared to Fig.52 The antenna shown, Fig.58 The antenna shown can also resonate at around 1.9 GHz and 2.2 GHz (because the frequencies of the two resonance points are close, they are combined into one resonance). Fig.58In the antenna shown, the first end of the feed element is a grounded end and the second end is an open end. The antenna structure has poor symmetry, so the working bandwidth of the antenna is narrow, and the excitation of the linear DM mode near 2.6 GHz is enhanced.

[0526] like Fig.60 As shown, the antenna does not generate pits in the working frequency band formed by the first resonance and the second resonance, and has good radiation efficiency and system efficiency.

[0527] Fig.61 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0528] It should be understood that in the above embodiment, it is not shown whether a matching circuit is set between the feeding circuit 231 and the feeding element 221. In actual applications, a matching circuit can be set between the feeding circuit 231 and the feeding element 221 to adjust the radiation characteristics of the antenna 200 (for example, the resonance point frequency of the resonance).

[0529] In one embodiment, when the first end and the second end of the feeder 221 are grounded (eg Fig.52 As shown), a capacitor or an inductor may be provided between the feeding circuit 231 and the feeding element 221, such as Fig.61 As shown in (a) or (b) in .

[0530] In one embodiment, when the first end of the feeder 221 is grounded and the second end is an open end (eg Fig.58 As shown), a capacitor may be provided between the feeding circuit 231 and the feeding element 221, such as Fig.61 As shown in (c) in .

[0531] It should be understood that the above-mentioned capacitors and inductors are used only as examples. In actual applications, they can also be replaced by a circuit formed by cascading multiple capacitors and inductors. The values ​​of the capacitors and inductors can be determined according to actual production or design.

[0532] Fig.62 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0533] like Fig.62 As shown, the frame 11 includes a first position 201, a second position 202 and a third position 203 which are arranged in sequence, and the second position 202 is located between the first position 201 and the third position 203. The frame 11 has a first gap and a second gap respectively at the first position 201 and the second position 202. The frame 11 also includes a grounding point which is located between the first position 201 and the second position 202, and the frame 11 is coupled to the floor 300 at the grounding point. The frame 11 is coupled to the floor 300 at the third position 203. In one embodiment, the grounding point is located in the central area between the first position 201 and the second position 202.

[0534] The radiator 210 is a conductive portion of the frame 11 between the first position 201 and the second position 202. The conductive portion of the frame 11 between the second position 202 and the third position 203 is a parasitic stub.

[0535] It should be understood that Fig.62 The antenna 200 is shown with Fig.52 The difference of the antenna 200 shown is the parasitic stub. Among them, the radiator 210 (the conductive part between the first position 201 and the second position 202) can form a radiator structure consistent with a line antenna, and the first resonance and the second resonance are generated by the line CM mode. The parasitic stub and part of the radiator (the conductive part between the ground point and the third position 203) can form a radiator structure consistent with a slot antenna, and the fifth resonance is generated by the slot DM mode. In one embodiment, the current on the first radiator 210 on both sides of the second slot is reversed.

[0536] In one embodiment, in a low frequency band (less than or equal to 1 GHz, for example, 698 MHz-960 MHz), the frequency difference between the resonance point frequency of the fifth resonance and the resonance point frequency of the first resonance or the resonance point frequency of the second resonance is greater than or equal to 50 MHz and less than or equal to 160 MHz. In a medium frequency band (in the range of 1 GHz-2 GHz, for example, 1710 MHz-2170 MHz), the frequency difference between the resonance point frequency of the fifth resonance and the resonance point frequency of the first resonance or the resonance point frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. In a high frequency band (in the range of 2 GHz-3 GHz, for example, 2300 MHz-2690 MHz), the frequency difference between the resonance point frequency of the fifth resonance and the resonance point frequency of the first resonance or the resonance point frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0537] For the sake of brevity, Fig.62 The antenna 200 is shown with Fig.52 , Fig.57 , Fig.58 , Fig.60 , Fig.61 Similar parts of the antenna 200 shown are not described one by one, for example, the positional relationship between the radiator 210 and the feeding element 221; the position of the grounding point; and the shape of the feeding element 221, for example, a strip shape.

[0538] In one embodiment, the distance between the second position 202 and the third position 203 is greater than or equal to one third and less than or equal to two thirds of the distance between the first position 201 and the second position 202 .

[0539] It should be understood that Fig.62In the technical solution shown, the first radiator 210 is extended to the third position 203 of the frame 11 and grounded at the third position 203. The conductive part between the grounding point and the grounding point of the third position 203 can be used to form a radiator structure that conforms to the open slot antenna, and the fifth resonance is generated by the slot DM mode. This technical solution can be applied to the above Figures 52 to 60 In any of the embodiments shown.

[0540] In one embodiment, Fig.62 The technical solution shown can be applied to Fig.58 In the antenna 200 shown, Fig.63 shown.

[0541] exist Fig.63 In the antenna 200 shown, the first end of the feed element 221 is an open end and the second end is a ground end. The feed element 221 can form a structure similar to a monopole or a left-handed antenna. The feed element 221 with this structure can also excite the antenna 200 to generate the above-mentioned first resonance, second resonance and fifth resonance.

[0542] Fig.64 and Fig.65 yes Fig.62 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.64 yes Fig.62 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.65 yes Fig.62 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0543] like Fig.64 As shown, at 1.8GHz to 3GHz, compared to Fig.52 The antenna shown, Fig.62 The antenna shown can generate an additional fifth resonance near 2.7 GHz, with S11 less than -4 dB as the limit, and the working bandwidth is greater than Fig.52 The operating bandwidth of the antenna is shown.

[0544] like Fig.65 As shown, no efficiency pit is generated near the fifth resonance that the antenna can additionally generate, and the antenna has good radiation efficiency and system efficiency within the working frequency band formed by the first resonance, the second resonance and the fifth resonance.

[0545] Fig.66 It is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0546] like Fig.66As shown, the frame 11 has a first gap at a first position 201 and is coupled to the floor 300 at a second position 202. The first end of the radiator 210 is an open end and the second end is a ground end. The first end and the second end of the radiator 210 correspond to the first position 201 and the second position 202 of the frame 11, respectively. The first end and the second end of the feeder 221 are ground ends.

[0547] In one embodiment, the ratio of the length of the overlapping portion between the projection of the feeding element 221 on the frame 11 and the radiator 210 to the length of the radiator 210 is greater than or equal to 50%.

[0548] In one embodiment, the ratio of the length of the overlapping portion of the feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210) to the length of the feeder 221 is greater than or equal to 20%. In one embodiment, the ratio of the length of the overlapping portion of the feeder 221 and the radiator 210 along the first direction (the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210) to the length of the feeder 221 is greater than or equal to 30%.

[0549] In one embodiment, the projection of the feeding element 221 on the frame 11 covers the second position 202 .

[0550] It should be understood that in the embodiment of the present application, “covering” can be understood as the area of ​​the frame occupied by the projection formed by the feeding element 221 on the frame 11 including the second position 202. Fig.66 As shown, the projection of the feeding element 221 on the frame 11 is L-shaped, and the L-shaped area includes the second position 202 .

[0551] In one embodiment, the distance between the projection of the second position 202 on the feed 221 and the midpoint of the feed 221 is less than or equal to one quarter of the length of the feed 221. In one embodiment, the projection of the second position 202 on the feed 221 is in the central area of ​​the feed 221.

[0552] Among them, when the second position 202 is located at the intersection area of ​​two edges of the frame 11 (for example, the intersection area can be understood as when the second position 202 is located at the first edge, the distance between the second position 202 and the second edge along the extension direction of the first edge is less than or equal to 10 mm. Alternatively, the intersection area can also be understood as the arc area where the first edge and the second edge intersect), the projection of the second position 202 on the feeder 221 can be understood as the projection of the second position 202 on the feeder 221 along the tangent direction of the intersection area.

[0553] It should be understood that the radiator 210 has a weaker electric field and a stronger current in the vicinity of the second position 202. The feeder 221 has a weaker current and a stronger electric field in the vicinity of the center. The area (second position 202) where the radiator 210 has a weaker electric field (stronger magnetic field) is close to the area (midpoint) where the feeder 221 has a stronger electric field (stronger magnetic field), which can make the first resonance and the second resonance more balanced.

[0554] It should be understood that Fig.66 The difference between the antenna 200 shown in the embodiment described above and the antenna 200 shown in the embodiment described above is that the second end of the radiator 210 is a ground end.

[0555] In the above Figure 52 to Figure 65 In the antenna 200 shown, the first end and the second end of the radiator 210 are open ends, and the radiator 210 can form a radiator structure that conforms to a linear antenna. Fig.66 In the antenna 200 shown, the first end of the radiator 210 is an open end and the second end is a ground end. When an electrical signal is fed into the feeding point, a current in the same direction can be generated on the radiator 210, and the radiator 210 can be stimulated to generate a first resonance and a second resonance. In addition, since the first end of the radiator 210 is an open end and the second end is a ground end, the size of the radiator 210 can be further reduced (for example, it can be regarded as being reduced from a half-wavelength structure to a quarter-wavelength structure), thereby achieving miniaturization.

[0556] In one embodiment, the electrical length of the radiator 210 is one quarter of the first wavelength, the electrical length of the feeder 221 is one half of the first wavelength, and the first wavelength is the wavelength corresponding to the center frequency between the resonance point of the first resonance and the resonance point of the second resonance.

[0557] In one embodiment, the electrical length of the radiator 210 is half of the electrical length of the feeder 221, and correspondingly, the physical length of the radiator 210 is approximately half of the physical length of the feeder 221. Since the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease the physical length when the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1×100%≤L2≤L1×200%. In one embodiment, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1×200%≤L2≤L1×300%.

[0558] For the sake of brevity, Fig.66 The antenna 200 shown is similar to the above Figure 52 to Figure 65Similar parts of the antenna 200 shown are not described one by one. For example, the similar parts include the radiator 210 and the feeding element 221 for generating the first resonance and the second resonance; the first resonance and the second resonance can be used to jointly support an operating frequency band; the width of the first gap; the shape of the feeding element 221, for example, a strip shape; the position where the feeding element 221 is set, etc.

[0559] Fig.67 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0560] like Fig.67 As shown, the frame 11 includes a first position 201 and a second position 202. The frame 11 has a first gap and a second gap respectively formed in the first position 201 and the second position 202, and includes a grounding point between the first position 201 and the second position 202, where the frame 11 is coupled to the floor 300. In one embodiment, the grounding point is located in the center area between the first position 201 and the second position 202.

[0561] The antenna 200 may include a first feeder 221 , a second feeder 222 , and a radiator 210 .

[0562] The radiator 210 is a conductive portion of the frame 11 between the first position 201 and the second position 202. The first end and the second end of the radiator 210 are open ends.

[0563] The first feeder 221, the second feeder 222 and the radiator 210 are spaced apart from each other.

[0564] The second feeder 222 at least partially overlaps along a first direction, and the first direction is perpendicular to the extension direction (e.g., y direction) of the first radiator 210. The extension direction of the first radiator 210 is the same as the extension direction of the first feeder 221. The first end and the second end of the first feeder 221 are grounded ends. The first end and the second end of the second feeder 222 are open ends.

[0565] The antenna 200 further includes a first feeding circuit 231 and a second feeding circuit 232. The first feeding element 221 includes a first feeding point, and the first feeding circuit 231 is coupled to the first feeding point. The second feeding element 222 includes a second feeding point 213, and the second feeding circuit 232 is coupled to the second feeding point 213.

[0566] It should be understood that in the above embodiments, the radiator and the feeding element are described as one-to-one. Fig.67 In the illustrated embodiment, the radiator can be excited by two feeding elements to generate resonance, thereby expanding the bandwidth while reducing the size of the antenna 200.

[0567] The antenna 200 may include a first antenna and a second antenna. The radiator 210 and the first feeder 221 may form the first antenna. The radiator 210 and the second feeder 222 may form the second antenna.

[0568] In the first antenna, the radiator 210 forms a radiator structure consistent with a linear antenna, and the electrical signal is fed into the first feeding unit, and the radiator 210 can generate a first resonance and a second resonance by a linear CM mode. In one embodiment, the first resonance and the second resonance can be used to jointly support the first operating frequency band of the electronic device 10.

[0569] In the second antenna, the radiator 210 forms a radiator structure that conforms to a linear antenna, and the electrical signal is fed into the second feeding unit, and the radiator 210 can generate a third resonance and a fourth resonance by a linear DM mode. In one embodiment, the third resonance and the fourth resonance can be used to jointly support the second operating frequency band of the electronic device 10.

[0570] In one embodiment, the first resonance and the second resonance can be close to each other so that the first resonance and the second resonance are used to jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the first resonance and the second resonance is in the range of 5% to 20% of the low frequency resonance frequency or the high frequency resonance frequency (greater than or equal to 5%, and less than or equal to 20%). In one embodiment, in the low frequency band (less than or equal to 1 GHz, for example, 698 MHz-960 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 50 MHz and less than or equal to 160 MHz. In the medium frequency band (in the range of 1 GHz-2 GHz, for example, 1710 MHz-2170 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high frequency band (within the range of 2 GHz-3 GHz, for example, 2300 MHz-2690 MHz), the frequency difference between the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0571] In one embodiment, the third resonance and the fourth resonance can be close to each other so that the third resonance and the fourth resonance are used to jointly support an operating frequency band of the electronic device 10. In one embodiment, the frequency difference between the third resonance and the fourth resonance is in the range of 5% to 20% of the low frequency resonance frequency or the high frequency resonance frequency (greater than or equal to 5%, and less than or equal to 20%). In one embodiment, in the low frequency band (less than or equal to 1 GHz, for example, 698 MHz-960 MHz), the frequency difference between the resonance point frequency of the third resonance and / or the resonance point frequency of the fourth resonance is greater than or equal to 20 MHz and less than or equal to 160 MHz. In the medium frequency band (in the range of 1 GHz-2 GHz, for example, 1710 MHz-2170 MHz), the frequency difference between the resonance point frequency of the third resonance and / or the resonance point frequency of the fourth resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. In the high frequency band (within the range of 2 GHz-3 GHz, for example, 2300 MHz-2690 MHz), the frequency difference between the resonance point frequency of the third resonance and / or the resonance point frequency of the fourth resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

[0572] Since there is good isolation between the line CM mode and the line DM mode, the first antenna and the second antenna have little mutual interference. In one embodiment, the first working frequency band and the second working frequency band may be the same, and the first antenna and the second antenna may be used as sub-antennas in a MIMO system to improve the communication performance of the electronic device. In one embodiment, the first working frequency band and the second working frequency band may be different.

[0573] In one embodiment, at the resonance point of the first resonance, the currents on the radiator 210 on both sides of the grounding point are reversed. At the resonance point of the second resonance, the currents on the radiator 210 on both sides of the grounding point are reversed.

[0574] In one embodiment, at the resonance point of the first resonance and the resonance point of the second resonance, the currents on the first feeder 221 on both sides of the center are reversed. It should be understood that the currents on the first feeder 221 are reversely distributed and can work in the slot DM mode.

[0575] In one embodiment, at the resonance point of the third resonance, the currents on the radiator 210 on both sides of the grounding point are in the same direction. At the resonance point of the fourth resonance, the currents on the radiator 210 on both sides of the grounding point are in the same direction.

[0576] In one embodiment, at the resonance point of the third resonance, the currents on the second feeder 222 are in the same direction. At the resonance point of the fourth resonance, the currents on the second feeder 222 are in the same direction. It should be understood that the currents on the second feeder 222 are distributed in the same direction and can work in the line DM mode.

[0577] In one embodiment, both ends of the first feeding element 221 are grounded, the electrical length of the radiator 210 is the same as the electrical length of the feeding element 221, and both are half of the first wavelength, where the first wavelength is the wavelength corresponding to the center frequency between the resonance point of the first resonance and the resonance point of the second resonance.

[0578] In one embodiment, the electrical length of the radiator 210 is the same as the electrical length of the first feeder 221, and correspondingly, the physical length of the radiator 210 is substantially the same as the physical length of the first feeder 221. Since the electronic components coupled to the first feeder 221 / radiator 210 can increase or decrease the physical length when the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L2 of the first feeder 221 satisfy: L1×50%≤L2≤L1. In one embodiment, the physical length L1 of the radiator 210 and the physical length L2 of the first feeder 221 satisfy: L1≤L2≤L1×150%.

[0579] In one embodiment, both ends of the second feeding element 222 are open ends, the electrical length of the radiator 210 is the same as the electrical length of the second feeding element 222, and both are half of the second wavelength, and the second wavelength is the wavelength corresponding to the center frequency of the third resonance and the fourth resonance.

[0580] In one embodiment, the electrical length of the radiator 210 is the same as the electrical length of the second feeder 222, and correspondingly, the physical length of the radiator 210 is substantially the same as the physical length of the second feeder 222. Since the electronic components coupled to the second feeder 222 / radiator 210 can increase or decrease the physical length when the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L3 of the second feeder 222 satisfy: L1×50%≤L3≤L1. In one embodiment, the physical length L1 of the radiator 210 and the physical length L3 of the second feeder 222 satisfy: L1≤L3≤L1×150%.

[0581] In one embodiment, in the electronic device 10, the first feeder 221 and the second feeder 222 are arranged at intervals, which can be understood as the first feeder 221 and the second feeder 222 are not arranged on the same surface. For example, the first feeder 221 and the second feeder 222 can be arranged on the upper surface and the lower surface of the bracket, respectively. Alternatively, the first feeder 221 and the second feeder 222 can be arranged on different surfaces of a plurality of dielectric layers included in the PCB, respectively. Alternatively, the first feeder 221 and the second feeder 222 are arranged on the bracket and the PCB surface, respectively.

[0582] Fig.68 and Fig.69 yes Fig.67 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.68yes Fig.67 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.69 yes Fig.67 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0583] like Fig.68 As shown, the first antenna (S11) can generate resonance near 1.85 GHz and near 2.3 GHz, which can correspond to the first resonance and the second resonance in the above embodiment respectively. The second antenna (S22) can generate resonance near 2.45 GHz and near 2.6 GHz, which can correspond to the third resonance and the fourth resonance in the above embodiment respectively.

[0584] The first resonance and the second resonance are generated by the line CM mode, and the third resonance and the fourth resonance are generated by the line DM mode. Therefore, there is good isolation between the first antenna and the second antenna. With S11 / S22<-4dB as the limit, within their respective resonant frequency bands, the isolation (S12) between the first antenna and the second antenna is less than -14dB.

[0585] like Fig.69 As shown, the first resonance and the second resonance are both generated by the line CM mode. Since the line CM mode has higher radiation efficiency and system efficiency, the first antenna does not produce a pit in the working frequency band formed by the first resonance and the second resonance, and has better radiation efficiency and system efficiency. The third resonance and the fourth resonance are both generated by the line DM mode. Since the radiation efficiency and system efficiency of the line DM mode intersecting the line CM mode are lower, the radiation efficiency and system efficiency of the second antenna are lower than those of the first antenna.

[0586] Fig.70 and Fig.71 yes Fig.67 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.70 yes Fig.67 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.71 yes Fig.67 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0587] It should be understood that Fig.68 and Fig.69 In the simulation results shown, it is explained by taking the example that the first operating frequency band formed by the first resonance and the second resonance and the second operating frequency band formed by the third resonance and the fourth resonance may be different. Fig.70 and Fig.71In the simulation results shown, some parameters can be adjusted to make the first operating frequency band formed by the first resonance and the second resonance and the second operating frequency band formed by the third resonance and the fourth resonance the same. For example, the above parameters can be the position of the first feeding point, the position of the second feeding point, the distance between the feeder and the radiator, the element coupled to the feeder / radiator, etc.

[0588] like Fig.70 As shown, the first antenna (S11) can resonate near 2.3 GHz and near 2.6 GHz, which can correspond to the first resonance and the second resonance in the above embodiment, respectively. The second antenna (S22) can resonate near 2.45 GHz and near 2.6 GHz, which can correspond to the third resonance and the fourth resonance in the above embodiment, respectively.

[0589] The first resonance and the second resonance are generated by the line CM mode, and the third resonance and the fourth resonance are generated by the line DM mode. Therefore, when the first working frequency band and the second working frequency band are the same, the first antenna and the second antenna also have good isolation. With S11 / S22<-4dB as the limit, within their respective resonant frequency bands, the isolation (S12) between the first antenna and the second antenna is less than -15dB.

[0590] like Fig.71 As shown, the first resonance and the second resonance are both generated by the line CM mode. Since the line CM mode has higher radiation efficiency and system efficiency, the first antenna does not produce a pit in the working frequency band formed by the first resonance and the second resonance, and has better radiation efficiency and system efficiency. The third resonance and the fourth resonance are both generated by the line DM mode. Since the radiation efficiency and system efficiency of the line DM mode intersecting the line CM mode are lower, the radiation efficiency and system efficiency of the second antenna are lower than those of the first antenna.

[0591] Fig.72 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0592] It should be understood that in the above embodiments, the half-wavelength mode of the radiator in the CM mode / DM mode is used as an example for explanation, and correspondingly, the working mode of the feeder is also the half-wavelength mode (both ends of the feeder are grounded ends / open ends, when one end of the feeder is grounded and the other end is an open end, the working mode of the feeder is the quarter-wavelength mode).

[0593] And in Fig.72 In the antenna 200 shown, the first antenna and Fig.67 The first antenna is the same as the first antenna shown in FIG. In the first antenna, the radiator 210 operates in the half-wavelength mode of the linear CM mode. The second antenna is Fig.67 The second antenna shown in Fig.72 In the second antenna shown, the two-thirds wavelength mode of the radiator 210 can be excited by the second feeding element 222, and correspondingly, the third resonance and the fourth resonance can be generated by the two-thirds wavelength mode of the linear DM mode.

[0594] Furthermore, when the third resonance and the fourth resonance can be generated by the half-wavelength mode, the working mode of the second feeder 222 can be the half-wavelength mode, and the electrical length of the second feeder 222 is one-third of the electrical length of the radiator 210, which can further reduce the size of the second feeder 222. In one embodiment, the physical length L1 of the radiator 210 and the physical length L3 of the second feeder 222 satisfy: L1×20%≤L3≤L1×50%.

[0595] In one embodiment, in the first antenna, the radiator 210 forms a radiator structure that conforms to a linear antenna, and an electrical signal is fed into the radiator 210 through the first feeding unit. The radiator 210 can generate a first resonance, a second resonance, a fifth resonance, and a sixth resonance by a linear CM mode. The first resonance and the second resonance are used to jointly support the first operating frequency band of the electronic device 10, and the fifth resonance and the sixth resonance can be used to jointly support the third operating frequency band of the electronic device 10. In one embodiment, the first resonance and the second resonance can be generated by a half-wavelength mode of the linear CM mode. In one embodiment, the fifth resonance and the sixth resonance can be generated by a one-time wavelength mode of the linear CM mode.

[0596] In the second antenna, the radiator 210 forms a radiator structure that conforms to a linear antenna, and an electrical signal is fed into the radiator 210 through the second feeding unit, so that the radiator 210 can generate a third resonance and a fourth resonance by a linear DM mode, and the third resonance and the fourth resonance are used to jointly support the second operating frequency band of the electronic device 10. In one embodiment, the third resonance and the fourth resonance can be generated by a three-half wavelength mode of the linear DM mode.

[0597] In one embodiment, the third working frequency band and the second working frequency band may be the same, and the first antenna and the second antenna may be used as sub-antennas in a MIMO system to improve the communication performance of the electronic device. In one embodiment, the third working frequency band and the second working frequency band may be different.

[0598] Fig.73 and Fig.74 yes Fig.72 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.73 yes Fig.72 The S-parameter simulation results of the antenna 200 in the electronic device 10 are shown. Fig.74 yes Fig.72 The simulation results of system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 are shown.

[0599] like Fig.73 As shown, the first antenna (S11) can generate resonances near 0.7 GHz, near 0.95 GHz, near 2.45 GHz, and near 2.9 GHz, which can respectively correspond to the first resonance and the second resonance, and the fifth resonance and the sixth resonance in the above embodiment. The second antenna (S22) can generate resonances near 2.5 GHz and near 2.7 GHz, which can respectively correspond to the third resonance and the fourth resonance in the above embodiment.

[0600] The first resonance and the second resonance are generated by the half wavelength mode of the line CM mode, the fifth resonance and the sixth resonance are generated by the one-time wavelength mode of the line CM mode, and the third resonance and the fourth resonance can be generated by the three-half wavelength mode of the line DM mode. Therefore, when the resonance point frequencies of the fifth resonance and the sixth resonance are approximately the same as those of the third resonance and the fourth resonance, there is also good isolation between the first antenna and the second antenna. With S11 / S22<-4dB as the limit, within their respective resonance frequency bands, the isolation (S12) between the first antenna and the second antenna is less than -14dB.

[0601] like Fig.74 As shown, in the resonant frequency bands of the fifth resonance and the sixth resonance, and the resonant frequency bands of the third resonance and the fourth resonance, the first antenna and the second antenna have good radiation efficiency and system efficiency.

[0602] Fig.75 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0603] like Fig.75 As shown, the frame 11 has a first gap at a first position 201 and is coupled to the floor 300 at a second position 202. The first end of the radiator 210 is an open end and the second end is a ground end. The first end and the second end of the radiator 210 correspond to the first position 201 and the second position 202 of the frame 11, respectively. The first end of the feeder 221 is a ground end and the second end is an open end.

[0604] The ratio of the length of the overlapping portion of the projection of the feeder 221 on the frame 11 and the radiator 210 to the length of the feeder 221 is greater than or equal to 25%. In one embodiment, the projection of the feeder 221 on the frame 11 completely overlaps with the radiator 210.

[0605] It should be understood that in the above embodiments, the following situations are listed: (1) the first end and the second end of the radiator 210 are grounded, and the first end and the second end of the feeder 221 are open ends; (2) the first end and the second end of the radiator 210 are grounded, and the first end and the second end of the feeder 221 are grounded, and the second end are open ends; (3) the first end of the radiator 210 is grounded, and the second end is an open end, and the first end and the second end of the feeder 221 are open ends; (4) the first end and the second end of the radiator 210 are open ends, and the first end and the second end of the feeder 221 are grounded; (5) the first end and the second end of the radiator 210 are open ends, and the first end of the feeder 221 is grounded, and the second end is an open end; (6) the first end of the radiator 210 is an open end, and the second end is grounded, and the first end and the second end of the feeder 221 are grounded.

[0606] and Fig.75 The difference between the antenna 200 shown and the antenna 200 shown in the above embodiment includes that the first end of the radiator 210 is an open end and the second end is a ground end. The first end of the feeder 221 is a ground end and the second end is an open end. When an electrical signal is fed into the feeding point, the radiator 210 can also be stimulated to generate a first resonance and a second resonance. In addition, since the first end of the radiator 210 is an open end and the second end is a ground end, and the first end and the second end of the feeder 221 are ground ends, the size of the radiator 210 and the feeder 221 can be further reduced (for example, it can be regarded as a reduction from a half-wavelength structure to a quarter-wavelength structure) to achieve miniaturization.

[0607] In one embodiment, the electrical length of the radiator 210 is one quarter of the first wavelength, the electrical length of the feeder 221 is one quarter of the first wavelength, and the first wavelength is the wavelength corresponding to the center frequency between the resonance point of the first resonance and the resonance point of the second resonance.

[0608] In one embodiment, the electrical length of the radiator 210 is the same as the electrical length of the feeder 221, and correspondingly, the physical length of the radiator 210 is substantially the same as the physical length of the feeder 221. Since the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease the physical length while the electrical length remains unchanged, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1×50%≤L2≤L1. In one embodiment, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy: L1≤L2≤L1×150%.

[0609] In one embodiment, a capacitor may be provided between the feed circuit and the feed element. In one embodiment, the capacitance value of the capacitor is less than or equal to 1.5 pF. In one embodiment, the distance between the feed point and the first end (ground end) of the feed element 221 is greater than the distance between the feed point and the second end (open end) of the feed element 221. The feed element 221 may be formed into a structure similar to a monopole or a left-handed antenna, further reducing the size of the feed element 221.

[0610] For the sake of brevity, Fig.75 The parts of the antenna 200 shown in the figure that are similar to the antenna 200 shown in the above embodiment are not described one by one, for example, the position of the radiator 210 and its positional relationship with the feeding element 221; the radiator 210 is used to generate the first resonance and the second resonance; the first resonance and the second resonance can be used to jointly support an operating frequency band; the width of the first gap; the shape of the feeding element 221, for example, a strip shape; the position where the feeding element 221 is set, etc.

[0611] Fig.76 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0612] It should be understood that in the above-mentioned embodiments, the electronic device 10 only includes a single housing (eg, Figure 1 The middle frame 19 shown in the figure is used as an example to illustrate that the technical solution provided in the embodiment of the present application can also be applied to a foldable electronic device including multiple shells. The multiple shells can be moved closer to or away from each other by rotating the connected rotating shafts to realize the opening and closing function of the foldable electronic device 10 (switching between the unfolded state and the folded state). In the unfolded state, the angle between the multiple shells can be about 180°. In the folded state, the foldable electronic device 10 is currently bent, and the bending degree of the foldable electronic device 10 reaches the maximum.

[0613] like Fig.76 As shown, the electronic device 10 may include a first housing 271 , a second housing 272 and a first rotating shaft 273 .

[0614] The first rotating shaft 273 is located between the first shell 271 and the second shell 272 , and the first rotating shaft 273 is rotatably connected to the first shell 271 and the second shell 272 respectively, so that the first shell 271 and the second shell 272 can rotate relative to each other.

[0615] The first shell 271 includes a first frame 2710 , and the second shell 272 includes a second frame 2720 .

[0616] The first frame 2710 includes a first position 201 and a second position 202. The second frame 2720 includes a third position 203 and a fourth position 204. The first frame 2710 is coupled to the floor at the first position 201 and the second position 202. The second frame 2720 has a first gap and a second gap at the third position 203 and the fourth position 204, respectively.

[0617] The first frame 2710 defines a third gap between the first position 201 and the second position 202. In one embodiment, the third gap is located in a central area between the first position 201 and the second position 202.

[0618] The second frame 2720 includes a grounding point between the third position 203 and the fourth position 204, and the second frame 2720 is coupled to the floor at the grounding point. In one embodiment, the grounding point is located in a central area between the third position 203 and the fourth position 204.

[0619] The antenna 200 may include a first feeder 221, a second feeder 222, a first radiator 210, and a second radiator 220. The first radiator 210 is a conductive portion between the first position 201 and the second position 202. The second radiator 220 is a conductive portion between the third position 203 and the fourth position 204. The first radiator 210 and the first feeder 221 are arranged at intervals, and the first radiator 210 and the first feeder 221 at least partially overlap along a first direction, and the first direction is perpendicular to the extension direction of the first radiator 210 (for example, the y direction). The extension direction of the first radiator 210 is in the same direction as the extension direction of the first feeder 221. The second radiator 220 and the second feeder 222 are arranged at intervals, and the second radiator 220 and the second feeder 222 at least partially overlap along a second direction, and the second direction is perpendicular to the extension direction of the second radiator 220 (for example, the x direction). The extension direction of the second radiator 220 is the same as the extension direction of the second feeder 222. The first direction and the second direction can be the same or different. The first end and the second end of the first feeder 221 are open ends. The first end and the second end of the second feeder 222 are ground ends.

[0620] The antenna 200 further includes a first feeding circuit 231 and a second feeding circuit 232. The first feeding element 221 includes a first feeding point 211, and the first feeding circuit 231 is coupled to the first feeding point 211. The second feeding element 222 includes a second feeding point 213, and the second feeding circuit 232 is coupled to the second feeding point 213.

[0621] It should be understood that the antenna 200 may include a first antenna and a second antenna. The first radiator 210 may form the first antenna. The second radiator 220 may form the second antenna.

[0622] The first radiator 210 may form a radiator structure conforming to a slot antenna. Through the first feeding circuit 231 , the first radiator 210 may generate a first resonance and a second resonance by a slot CM mode. The first resonance and the second resonance are used to jointly support a first operating frequency band of the electronic device 10 .

[0623] The second radiator 220 may form a radiator structure conforming to a linear antenna. Through the second feeding unit 232 , the second radiator 220 may generate a third resonance and a fourth resonance by a linear CM mode. The third resonance and the fourth resonance are used to jointly support the second operating frequency band of the electronic device 10 .

[0624] Since there is good isolation between the slot CM mode and the line CM mode, there is little mutual interference between the first antenna and the second antenna. In one embodiment, the first operating frequency band and the second operating frequency band may be the same or adjacent. In one embodiment, the first antenna and the second antenna may be used as sub-antennas in a MIMO system to improve the communication performance of the electronic device. In one embodiment, the first operating frequency band and the second operating frequency band may be different.

[0625] In one embodiment, the first antenna may be Figures 9 to 40 Any one of the antennas 200 or Figures 9 to 40 Any combination of multiple antenna structures, the second antenna can be Figures 52 to 60 Any one of the antennas 200 or Figures 52 to 60 The antennas combined with any number of antenna structures can be selected according to actual production or design. Fig.76 The parts of the antenna 200 shown in the figure that are similar to the antenna 200 shown in the above embodiment are not described one by one, for example, the positional relationship between the radiator and the corresponding feeding element; the width of the gap opened on the frame; the shape of the feeding element, for example, a strip shape; the position where the feeding element is set; and the working frequency band formed by two resonances, etc.

[0626] At the same time, for the sake of brevity, Fig.76 In the antenna 200 shown, only the first end and the second end of the first feeder 221 are open ends, and the first end and the second end of the second feeder 222 are grounded ends are used as an example for description. Fig.76 The first feeding element 221 and the second feeding element 222 shown may also refer to the above embodiments, and the first end and the second end may also be an open end and a ground end respectively.

[0627] It should be understood that when the first end and the second end of the first radiator 210 are grounded ends, the first end and the second end of the first feeding element 221 are open ends, the first end and the second end of the second radiator 220 are open ends, and the first end and the second end of the second feeding element 222 are both grounded ends, there is better isolation between the first antenna and the second antenna.

[0628] In one embodiment, the length of the first radiator 210 is substantially the same as the length of the second radiator 220. In one embodiment, the ratio of the length of the first radiator 210 to the length of the second radiator 220 is greater than or equal to 90% and less than or equal to 110%.

[0629] In one embodiment, when the electronic device 10 is in the folded state, the first gap or the second gap is aligned with the third gap. Fig.77 As shown in (a) in FIG. Alignment can be understood as the first gap or the second gap at least partially overlapping with the third gap in a third direction, and the third direction is the thickness direction of the electronic device 10, for example, the z direction.

[0630] It should be understood that aligning the first gap or the second gap with the third gap can make the housing of the electronic device 10 more beautiful and improve the user experience. When the first gap or the second gap is aligned with the third gap, the first radiator 210 and the second radiator 220 at least partially overlap in the third direction.

[0631] In one embodiment, when the electronic device 10 is in the folded state, the first gap or the second gap is not aligned with the third gap. Fig.77 As shown in (b) in .

[0632] In one embodiment, the ratio of the length of the overlapping portion of the projection of the first radiator 210 on the second frame 2720 and the second radiator 220 to the length of the second radiator 220 is greater than or equal to 50%. In one embodiment, the projection of the first radiator 210 on the second frame 2720 completely overlaps with the second radiator 220.

[0633] In one embodiment, the ratio of the length of the overlapping portion of the projection of the second radiator 220 on the first frame 2710 and the first radiator 210 to the length of the first radiator 210 is greater than or equal to 50%. In one embodiment, the projection of the second radiator 220 on the first frame 2710 completely overlaps with the first radiator 210.

[0634] Figures 78 to 81 yes Fig.76 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.78 yes Fig.76 The S-parameter simulation results of the antenna 200 when the electronic device 10 is in the unfolded state are shown. Fig.79 yes Fig.76 The illustrated S-parameter simulation results of the antenna 200 when the electronic device 10 is in the folded state. Fig.80 yes Fig.76 The illustrated simulation results show the system efficiency and radiation efficiency of the antenna 200 when the electronic device 10 is in the unfolded state. Fig.81 yes Fig.76 The illustrated system efficiency and radiation efficiency simulation results of the antenna 200 when the electronic device 10 is in the folded state.

[0635] like Fig.78 As shown, when the electronic device 10 is in the unfolded state, the first antenna (S11) can resonate near 2 GHz and near 2.35 GHz, which can correspond to the first resonance and the second resonance in the above embodiment, respectively. The second antenna (S22) can resonate near 2 GHz and near 2.6 GHz, which can correspond to the third resonance and the fourth resonance in the above embodiment, respectively.

[0636] like Fig.79 As shown, when the electronic device 10 is in the folded state, the first antenna (S11) can resonate at about 2 GHz and 2.3 GHz, and the second antenna (S22) can resonate at about 2.1 GHz and 2.6 GHz. The resonant point frequencies of the first antenna and the second antenna when the electronic device 10 is in the folded state are substantially the same as the resonant point frequencies of the first antenna and the second antenna when the electronic device 10 is in the unfolded state.

[0637] Furthermore, when the electronic device 10 is in the folded state, the first resonance and the second resonance are generated by the slot CM mode, and the third resonance and the fourth resonance are generated by the line CM mode. Compared with when the electronic device 10 is in the unfolded state (when the distance between the first antenna and the second antenna is far), when the electronic device 10 is in the folded state, there is also good isolation between the first antenna and the second antenna. Therefore, when the electronic device 10 is in the folded state or the unfolded state, with S11 / S22<-4dB as the limit, within the resonant frequency band, the isolation (S12) between the first antenna and the second antenna is less than -13dB. The first antenna and the second antenna can be used as sub-antennas in a MIMO system.

[0638] It should be understood that for the sake of simplicity of discussion, in the above embodiments, the first antenna and the second antenna are used as sub-antennas in a MIMO system as an example for explanation. In actual production or design, the first antenna and the second antenna may also operate in different operating frequency bands respectively.

[0639] like Fig.80 and Fig.81As shown, the first resonance and the second resonance can both be generated by the slot CM mode, and the third resonance and the fourth resonance can both be generated by the line CM mode. Since the slot CM mode / line CM mode has higher radiation efficiency and system efficiency, when the electronic device 10 is in the folded state or the unfolded state, the antenna has better radiation efficiency and system efficiency within the working frequency band formed by the first resonance and the second resonance / the third resonance and the fourth resonance.

[0640] Fig.82 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0641] like Fig.82 As shown, the structure of the first antenna in antenna 200 is similar to Fig.76 The structure of the first antenna in the antenna 200 shown is the same, and the first radiator 210 is a conductive portion between the first position 201 and the second position 202 . Fig.82 The antenna 200 is shown with Fig.76 The difference of the antenna 200 shown includes that the conductive part between the third position 203 and the fourth position 204 of the second frame 2720 is used as the second feeding element 222, the second radiator 220 is arranged on the surface of the bracket, and the second frame 2720 is coupled to the floor at the third position 203 and the fourth position 204.

[0642] It should be understood that Fig.82 In the electronic device 10 shown, the second frame 2720 does not need to have gaps at the third position 203 and the fourth position 204, thereby ensuring the integrity of the second frame 2720 and improving the aesthetics.

[0643] For the sake of simplicity, only the second radiator 220 and the second feeder 222 in the second antenna are taken as an example for explanation. In actual production or design, the first radiator 210 and the first feeder 221 in the first antenna may also adopt the same design scheme, with the conductive part between the first position 201 and the second position 202 serving as the first feeder 221.

[0644] In one embodiment, the first radiator 210 and the second feeder 221 at least partially overlap in the third direction. In one embodiment, the first radiator 210 and the second feeder 221 completely overlap in the third direction.

[0645] Figure 83 to Figure 86 yes Fig.82 The simulation results of the antenna 200 in the electronic device 10 are shown. Fig.83 yes Fig.82 The S-parameter simulation results of the antenna 200 when the electronic device 10 is in the unfolded state are shown. Fig.84 yes Fig.82The illustrated S-parameter simulation results of the antenna 200 when the electronic device 10 is in the folded state. Fig.85 yes Fig.82 The illustrated simulation results show the system efficiency and radiation efficiency of the antenna 200 when the electronic device 10 is in the unfolded state. Fig.86 yes Fig.82 The illustrated system efficiency and radiation efficiency simulation results of the antenna 200 when the electronic device 10 is in the folded state.

[0646] like Fig.83 As shown, when the electronic device 10 is in the unfolded state, the first antenna (S11) can resonate near 2.25 GHz and near 2.6 GHz, which can correspond to the first resonance and the second resonance in the above embodiment, respectively. The second antenna (S22) can resonate near 1.95 GHz and near 2.4 GHz, which can correspond to the third resonance and the fourth resonance in the above embodiment, respectively.

[0647] When the electronic device 10 is in the unfolded state, for the second antenna, when the second radiator is not provided, the radiator structure (slot DM mode) of the second antenna formed by the second feeding element conforming to the slot antenna resonates at around 2.35 GHz.

[0648] like Fig.84 As shown, when the electronic device 10 is in the folded state, the first antenna (S11) can resonate at about 2.35 GHz and 2.7 GHz, and the second antenna (S22) can resonate at about 2.05 GHz and 2.5 GHz. The resonant point frequencies of the first antenna and the second antenna when the electronic device 10 is in the folded state are substantially the same as the resonant point frequencies of the first antenna and the second antenna when the electronic device 10 is in the unfolded state.

[0649] When the electronic device 10 is in the folded state, the second radiator is not provided, and the second antenna is formed by only the second feeding element, and the radiator structure (slot DM mode) conforming to the slot antenna resonates at around 2.55 GHZ.

[0650] Furthermore, when the electronic device 10 is in the folded state, the first resonance and the second resonance are generated by the slot CM mode, and the third resonance and the fourth resonance are generated by the line CM mode. Compared with when the electronic device 10 is in the unfolded state (when the distance between the first antenna and the second antenna is far), when the electronic device 10 is in the folded state, there is also good isolation between the first antenna and the second antenna. Therefore, when the electronic device 10 is in the folded state or the unfolded state, with S11 / S22<-4dB as the limit, within the resonant frequency band, the isolation (S12) between the first antenna and the second antenna is less than -20dB. The first antenna and the second antenna can be used as sub-antennas in a MIMO system.

[0651] It should be understood that for the sake of simplicity of discussion, in the above embodiments, the first antenna and the second antenna are used as sub-antennas in a MIMO system as an example for explanation. In actual production or design, the first antenna and the second antenna may also operate in different operating frequency bands respectively.

[0652] like Fig.85 and Fig.86 As shown, the first resonance and the second resonance can both be generated by the slot CM mode, and the third resonance and the fourth resonance can both be generated by the line CM mode. Since the slot CM mode / line CM mode has higher radiation efficiency and system efficiency, when the electronic device 10 is in the folded state or the unfolded state, the antenna has better radiation efficiency and system efficiency within the working frequency band formed by the first resonance and the second resonance / the third resonance and the fourth resonance.

[0653] It should be understood that due to Fig.82 In the antenna 200 shown, the conductive part between the third position and the fourth position of the second frame serves as the second feeder, so the radiation environment of the second radiator (e.g., clearance, electronic components arranged around the radiation) is poor, and the efficiency bandwidth of the second antenna (e.g., bandwidth corresponding to system efficiency>-2dB) is narrow. However, compared with the case where the second radiator is not arranged, when the electronic device 10 is in the unfolded state, the radiation efficiency of the second antenna is improved by 1.5dB, and the system efficiency is improved by 2dB. When the electronic device 10 is in the folded state, the radiation efficiency of the second antenna is improved by 2dB, and the system efficiency is improved by 2dB.

[0654] Fig.87 yes Fig.82 The simulation results of the directivity coefficient of the antenna 200 when the electronic device 10 is in the unfolded state are shown.

[0655] like Fig.87 As shown in (a), it is the simulation result of the second antenna at 2.57 GHz without setting the second radiator, and the corresponding directivity coefficient is 7 dBi.

[0656] like Fig.87 As shown in (b), the simulation result of the second antenna at 2.57GHz with the second radiator is 4.7dBi. Compared with the case where the second radiator is not set, the energy radiated by the second antenna is more dispersed and will not be concentrated at a certain angle, thereby improving the communication performance of the electronic device.

[0657] Fig.88 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0658] like Fig.88As shown, the first frame 2710 has gaps at the first position 201 and the second position 202. The second frame 2720 has gaps at the third position 203 and the fourth position 204.

[0659] It should be understood that Fig.88 The electronic device 10 shown is Fig.76 as well as Fig.82 The electronic device 10 shown differs only in the boundary conditions of the first radiator 210 .

[0660] exist Fig.76 as well as Fig.82 In the electronic device 10 shown, both ends of the first radiator 210 are grounded, and the first radiator 210 can form a radiator structure that conforms to a slot antenna. Through the first feeding circuit 231, the first radiator 210 can generate a first resonance and a second resonance by a slot CM mode, and the first resonance and the second resonance are used to jointly support the first operating frequency band of the electronic device 10.

[0661] And in Fig.88 In the electronic device 10 shown, both ends of the first radiator 210 are open ends, and the first radiator 210 can form a radiator structure that conforms to a linear antenna. Through the first feeding circuit 231, the first radiator 210 can generate a first resonance and a second resonance in a linear DM mode, and the first resonance and the second resonance are used to jointly support the first operating frequency band of the electronic device 10.

[0662] Since there is good isolation between the line DM mode and the line CM mode, the first antenna and the second antenna have little mutual interference. In one embodiment, the first working frequency band and the second working frequency band may be the same or adjacent. In one embodiment, the first antenna and the second antenna may be used as sub-antennas in a MIMO system to improve the communication performance of the electronic device. In one embodiment, the first working frequency band and the second working frequency band may be different.

[0663] For the sake of brevity, Fig.88 In the antenna 200 shown, only the two ends of the first radiator 210 and the two ends of the second radiator 220 are open ends. Fig.88 Both ends of the first radiator 210 shown may also be ground ends, and both ends of the second radiator 220 may also be ground ends. For the sake of brevity of discussion, they will not be described one by one.

[0664] Fig.89 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0665] It should be understood that in the above embodiment, the antenna 200 is only described by taking the example of including the first antenna and the second antenna. In actual production or design, the antenna 200 may also include a third antenna formed by the third radiator 230.

[0666] like Fig.89 As shown, the first frame 2710 further includes a fifth position 205 and a sixth position 206. The first frame 2710 is coupled to the floor at the fifth position 205 and the sixth position 206. The first position 201, the second position 202, the fifth position 205 and the sixth position 206 are sequentially arranged on the first frame 2710.

[0667] The first frame 2710 defines a fourth gap between the fifth position 205 and the sixth position 206. In one embodiment, the fourth gap is located in a central area between the fifth position 205 and the sixth position 206. In one embodiment, when the electronic device 10 is in a folded state, the third gap, the fourth gap, the first gap, and the second gap are aligned.

[0668] The antenna 200 further includes a third radiator 230 , a third feeding element 223 and a third feeding circuit 233 .

[0669] The third radiator 230 is a conductor portion between the fifth position 205 and the sixth position 206. The third radiator 230 and the third feeder 223 are spaced apart, and the third radiator 230 and the third feeder 223 at least partially overlap along a fourth direction, and the fourth direction is perpendicular to an extension direction (e.g., an x ​​direction) of the third radiator 230. The extension direction of the third radiator 230 is in the same direction as the extension direction of the third feeder 223.

[0670] The extension direction of the first radiator 210 is perpendicular to the extension direction of the third radiator 230. The fourth direction is perpendicular to the first direction. In one embodiment, the fourth direction and the second direction may be the same or different. In one embodiment, the extension direction of the third feeder 223 is perpendicular to the extension direction of the first feeder 221.

[0671] The ratio of the length of the first radiator 210 in the extension direction (e.g., the fourth direction) of the first radiator 210 to the length of the first radiator 210 is greater than or equal to three quarters. The ratio of the length of the third radiator 230 in the extension direction (e.g., the first direction) of the third radiator 230 to the length of the third radiator 210 is greater than or equal to three quarters.

[0672] The third feeding element 223 includes a third feeding point, and the third feeding circuit 233 is coupled to the third feeding point 211 .

[0673] The first end and the second end of the third feeding element 223 are open ends.

[0674] It should be understood that the first radiator 210 can form a radiator structure that conforms to a slot antenna. Through the first feeding circuit 231, the first radiator 210 can generate a first resonance and a second resonance by the slot CM mode. The first resonance and the second resonance are used to jointly support the first operating frequency band of the electronic device 10.

[0675] The second radiator 220 may form a radiator structure conforming to a linear antenna. Through the second feeding unit 232 , the second radiator 220 may generate a third resonance and a fourth resonance by a linear CM mode. The third resonance and the fourth resonance are used to jointly support the second operating frequency band of the electronic device 10 .

[0676] The third radiator 230 can form a radiator structure that conforms to a slot antenna. Through the third feeding unit 233, the third radiator 230 can generate the seventh resonance and the eighth resonance by the slot CM mode. The seventh resonance and the eighth resonance are used to jointly support the third working frequency band of the electronic device 10.

[0677] Since the slot CM mode and the line CM mode have good isolation, the first antenna and the second antenna, and the third antenna and the second antenna have little mutual interference. In addition, since the extension direction of the first radiator 210 is perpendicular to the extension direction of the third radiator 230, the two are orthogonal in space, so the resonance generated by the slot CM mode of the first radiator 210 is orthogonal to the resonance generated by the slot CM mode of the third radiator 230. There is little mutual interference between the first antenna and the third antenna.

[0678] In one embodiment, since the first antenna and the third antenna have good isolation, the electronic device 10 may include only the first antenna and the third antenna. In one embodiment, the electronic device 10 may include only one housing. Alternatively, the electronic device 10 may include multiple housings, and the first antenna and the third antenna may be disposed on the same housing.

[0679] In one embodiment, the first operating frequency band, the second operating frequency band, and the third operating frequency band may be the same or adjacent. In one embodiment, the first antenna, the second antenna, and the third antenna may be used as sub-antennas in a MIMO system to improve the communication performance of the electronic device. In one embodiment, the first operating frequency band, the second operating frequency band, and the third operating frequency band may be different.

[0680] In one embodiment, the first antenna and the third antenna may be Figures 9 to 40 Any of the antennas 200 described above, the second antenna may be Figures 52 to 60 Any of the antennas 200 described above can be selected according to actual production or design. Fig.89The parts of the antenna 200 shown in the figure that are similar to the antenna 200 shown in the above embodiment are not described one by one, for example, the positional relationship between the radiator and the corresponding feeding element; the width of the gap opened on the frame; the shape of the feeding element, for example, a strip shape; the position where the feeding element is set; and the working frequency band formed by two resonances, etc.

[0681] At the same time, for the sake of brevity, Fig.89 In the antenna 200 shown, only the first end and the second end of the first feeder 221 and the third feeder 223 are open ends, and the first end and the second end of the second feeder 222 are grounded ends are used as an example for description. Fig.89 The first feeder 221 , the second feeder 222 , and the third feeder 223 shown may also refer to the above embodiment, and the first end and the second end may also be an open end and a ground end respectively.

[0682] In one embodiment, the length of the first radiator 210 , the length of the second radiator 220 , and the length of the third radiator 230 are substantially the same (with the difference within 10%).

[0683] In one embodiment, the ratio of the length of the overlapping portion of the projection of the first radiator 210 on the second frame 2720 and the second radiator 220 to the length of the second radiator 220 is greater than or equal to 30%. In one embodiment, the ratio of the length of the overlapping portion of the projection of the third radiator 230 on the second frame 2720 and the second radiator 220 to the length of the second radiator 220 is greater than or equal to 30%.

[0684] In one embodiment, the second position 202 coincides (is the same as) the fifth position 205. The grounding structure between the second position 202 and the floor can be used to improve the isolation between the first antenna and the third antenna. In one embodiment, the second position 202 can be electrically connected to the floor through a grounding member (e.g., a spring, a connecting rib). As the width of the grounding member connected to the first frame 2710 increases, the isolation between the first antenna and the third antenna increases. In one embodiment, the second position 202 is electrically connected to the floor through a spring (the width of the grounding member connected to the first frame 2710 is about 1mm), and the isolation between the first antenna and the third antenna is about 10dB. In one embodiment, the second position 202 is electrically connected to the floor through a connecting rib (the width of the grounding member connected to the first frame 2710 is greater than or equal to 3mm), and the isolation between the first antenna and the third antenna is greater than 13dB.

[0685] Fig.90 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0686] like Fig.90As shown in (a), the frame 11 is coupled to the floor 300 at a first position 201 and a second position 202. The frame 11 has a gap between the first position 201 and the second position 202 (for example, the distance between the conductors on both sides of the gap is greater than or equal to 5 mm). The radiator 210 is a conductive portion of the frame 11 between the first position 201 and the second position 202.

[0687] The radiator 210 is divided into a first portion 301 and a second portion 302 by a slit. The first portion 301 and the feeder 221 at least partially overlap along a first direction, and the second portion 302 and the feeder 221 at least partially overlap along the first direction, which is perpendicular to the extension direction of the radiator 210 (eg, y direction).

[0688] In one embodiment, the minimum distance D0 between the first portion 301 and the second portion 302 is less than or equal to the length of the first portion 301. In one embodiment, the minimum distance D0 between the first portion 301 and the second portion 302 is less than or equal to the length of the second portion 302. In one embodiment, the minimum distance D0 between the first portion 301 and the second portion 302 is less than or equal to one-half of the sum of the length of the first portion 301 and the length of the second portion 302.

[0689] It should be understood that in the above embodiments, the radiator is only described as a continuous conductor part. In actual production or design, the radiator may also be a discontinuous conductor part.

[0690] In one embodiment, the frame 11 may further include a third position 203 and a fourth position 204. The third position 203 and the fourth position 204 are located between the first position 201 and the second position 202. The first position 201, the third position 203, the fourth position 204 and the second position 202 are arranged in sequence. The frame 11 has gaps at the third p...

Claims

1. An antenna structure, characterized in that: include: floor; a frame, wherein the frame is at least partially spaced apart from the floor, the frame includes a first position and a second position, the frame is coupled to the floor at the first position and the second position, the frame has a first gap between the first position and the second position, and the first gap is located in a central area between the first position and the second position; a radiator, wherein the radiator is a conductive portion of the frame between the first position and the second position; a first feeder, wherein a first end of the first feeder is an open end, the radiator and the first feeder are spaced apart, and the radiator and the first feeder at least partially overlap along a first direction, the first direction is perpendicular to an extension direction of the radiator, and the extension direction of the first feeder is in the same direction as the extension direction of the radiator; a first feeding circuit, the first feeding element comprising a first feeding point, the first feeding circuit being coupled to the first feeding point; Wherein, the first feeding element and the radiator are used to generate a first resonance and a second resonance, and the first resonance and the second resonance are used to jointly support a first working frequency band; The first feeding circuit is used to feed a radio frequency signal of the first working frequency band into the first feeding element.

2. The antenna structure according to claim 1, characterized in that: At the resonance point of the first resonance, the currents on the radiator are in the same direction; At the resonance point of the second resonance, the currents on the radiator are in the same direction.

3. The antenna structure according to claim 1 or 2, characterized in that: At the resonance point of the first resonance, the currents on the first feeding element are in the same direction; At the resonance point of the second resonance, the currents on the first feeding element are in the same direction.

4. The antenna structure according to any one of claims 1 to 3, characterized in that: The frame further includes a third position, the first position, the second position and the third position are arranged in sequence, and the frame has a second gap at the third position; The antenna structure further includes a parasitic branch, which is a conductive portion of the frame between the second position and the third position.

5. The antenna structure according to claim 4, characterized in that: The parasitic branches are also used to generate the fifth resonance; At the resonance point of the fifth resonance, the current on the parasitic branch is in the same direction as the current on the radiator between the first slot and the second slot.

6. The antenna structure according to any one of claims 1 to 5, characterized in that: The second end of the first feeding element is an open end, and the second end of the first feeding element is spaced apart from the floor or coupled to the floor through a capacitive device; A ratio of a length of an overlapping portion between a projection of the first feeding element on the frame and the radiator to a length of the radiator is greater than or equal to 25%.

7. The antenna structure according to any one of claims 1 to 6, characterized in that: The second end of the first feeding element is an open end, and the second end of the first feeding element is spaced apart from the floor or coupled to the floor through a capacitive device; The physical length L1 of the radiator and the physical length L2 of the first feeding element satisfy: L1×50%≤L2≤L1.

8. The antenna structure according to any one of claims 1 to 7, characterized in that: The second end of the first feeding element is an open end, and the second end of the first feeding element is spaced apart from the floor or coupled to the floor through a capacitive device; A distance between a projection of the first slit on the first feeding element and a center of the first feeding element is less than or equal to one quarter of a length of the first feeding element.

9. The antenna structure according to any one of claims 6 to 8, characterized in that: The first feeding element further includes a grounding point coupled to the floor, and the first feeding elements on both sides of the grounding point have different lengths.

10. The antenna structure according to any one of claims 1 to 5, characterized in that: The second end of the first feeder is a grounding end, and the second end of the first feeder is directly electrically connected to the floor or is grounded through an inductive device; A ratio of a length of an overlapping portion between a projection of the first feeding element on the frame and the radiator to a length of the first feeding element is greater than or equal to 50%.

11. The antenna structure according to any one of claims 1 to 5 and 10, characterized in that: The second end of the first feeder is a grounding end, and the second end of the first feeder is directly electrically connected to the floor or is grounded through an inductive device; The physical length L1 of the radiator and the physical length L2 of the first feeding element satisfy: L1×25%≤L2≤L1×50%.

12. The antenna structure according to any one of claims 1 to 5, 10 to 11, characterized in that: The second end of the first feeder is a grounding end, and the first feeder is directly electrically connected to the floor at a grounding point or is grounded through an inductive device; A distance between a projection of the ground point on the radiator and the first gap is less than or equal to half of a length of the first feeding element.

13. The antenna structure according to any one of claims 1 to 12, characterized in that: The antenna structure further includes: a second feeder and a second feed circuit; Wherein, the second feeder is spaced apart from the first feeder and the radiator; The first end and the second end of the first feeder are open ends, and the first end and the second end of the second feeder are ground ends; The second feed member includes a second feed point, and the second feed circuit is coupled to the second feed point; The radiator is further used to generate a third resonance and a fourth resonance, and the third resonance and the fourth resonance are used to jointly support a second working frequency band. The second feeding circuit is used to feed a radio frequency signal of the second working frequency band into the second feeding element.

14. The antenna structure according to any one of claims 1 to 13, characterized in that: A distance D between the first feeding element and the radiator is less than or equal to 5 mm.

15. The antenna structure according to any one of claims 1 to 14, characterized in that: A frequency difference between the resonance point frequency of the first resonance and the resonance point frequency of the second resonance is in a range of 5% to 20% of a first frequency, and the first frequency is the resonance point frequency of the first resonance or the resonance point frequency of the second resonance.

16. The antenna structure according to any one of claims 1 to 15, characterized in that: Based on the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance being less than or equal to 1 GHz, a frequency difference between the resonance point frequency of the first resonance and the resonance point frequency of the second resonance is greater than or equal to 50 and less than or equal to 160 MHz; Based on the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance being greater than 1 GHz and less than or equal to 2 GHz, a frequency difference between the resonance point frequency of the first resonance and the resonance point frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz; Based on the fact that the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than 2 GHz and less than or equal to 3 GHz, the frequency difference between the resonance point frequency of the first resonance and the resonance point frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

17. An antenna structure, characterized in that: include: floor; a frame, wherein the frame is at least partially spaced apart from the floor, the frame comprises a grounding point, a first position, and a second position, the frame is provided with a first gap and a second gap at the first position and the second position respectively, the grounding point is located in a central area between the first position and the second position, and the frame is coupled to the floor at the grounding point; a radiator, wherein the radiator is a conductive portion of the frame between the first position and the second position; a first feeder, wherein a first end of the first feeder is a ground end, the radiator and the first feeder are spaced apart, and the radiator and the first feeder at least partially overlap along a first direction, the first direction is perpendicular to an extension direction of the radiator, and the extension direction of the first feeder is in the same direction as the extension direction of the radiator; a first feeding circuit, the first feeding element comprising a first feeding point, the first feeding circuit being coupled to the first feeding point; Wherein, the first feeding element and the radiator are used to generate a first resonance and a second resonance, and the first resonance and the second resonance are used to jointly support a first working frequency band; The first feeding circuit is used to feed a radio frequency signal of the first working frequency band into the first feeding element.

18. The antenna structure according to claim 17, characterized in that: At the resonance point of the first resonance, the currents on the radiators on both sides of the grounding point are reversed; At the resonance point of the second resonance, the currents on the radiators on both sides of the grounding point are reversed.

19. The antenna structure according to claim 16 or 17, characterized in that: At the resonance point of the first resonance, the currents on both sides of the center of the first feeding element are reversed; At the resonance point of the second resonance, the currents on both sides of the center of the first feeding element are reversed.

20. The antenna structure according to any one of claims 16 to 19, characterized in that: The frame further includes a third position, the first position, the second position and the third position are arranged in sequence, and the frame is coupled to the floor at the third position; The antenna structure further includes a parasitic branch, which is a conductive portion of the frame between the second position and the third position.

21. The antenna structure according to claim 20, characterized in that: The parasitic branches are also used to generate a third resonance; At the resonance point of the third resonance, the current on the parasitic stub is opposite to the current on the radiator between the ground point and the second position.

22. The antenna structure according to any one of claims 17 to 21, characterized in that: The second end of the first feeding element is a grounding end, and the second end of the first feeding element is directly grounded or grounded through an inductive device; A ratio of a length of an overlapping portion between a projection of the first feeding element on the frame and the radiator to a length of the radiator is greater than or equal to 25%.

23. The antenna structure according to any one of claims 17 to 22, characterized in that: The second end of the first feeding element is a grounding end, and the second end of the first feeding element is directly grounded or grounded through an inductive device; The physical length L1 of the radiator and the physical length L2 of the first feeding element satisfy: L1×50%≤L2≤L1.

24. The antenna structure according to any one of claims 17 to 23, characterized in that: The second end of the first feeding element is a grounding end, and the second end of the first feeding element is directly grounded or grounded through an inductive device; A distance between a projection of the grounding point on the first feeding element and a center of the first feeding element is less than or equal to one quarter of a length of the first feeding element.

25. The antenna structure according to any one of claims 17 to 21, characterized in that: The second end of the first feeder is an open end, The second end of the first feeding element is spaced apart from the floor or coupled to the floor through a capacitive device; A ratio of a length of an overlapping portion between a projection of the first feeding element on the frame and the radiator to a length of the first feeding element is greater than or equal to 50%.

26. The antenna structure according to any one of claims 17 to 21 and 25, characterized in that: The second end of the first feeding element is an open end, and the second end of the first feeding element is spaced apart from the floor or coupled to the floor through a capacitive device; The physical length L1 of the radiator and the physical length L2 of the first feeding element satisfy: L1×25%≤L2≤L1×50%.

27. The antenna structure according to any one of claims 17 to 21, 25 to 26, characterized in that: The second end of the first feeding element is an open end, and the second end of the first feeding element is spaced apart from the floor or coupled to the floor through a capacitive device; A distance between a projection of the second end of the first feeding element on the radiator and the ground point is less than or equal to one quarter of the length of the radiator.

28. The antenna structure according to any one of claims 17 to 27, characterized in that: The antenna structure further includes: a second feeder and a second feed circuit; Wherein, the second feeder is spaced apart from the first feeder and the radiator; The first end and the second end of the first feeder are grounded ends, and the first end and the second end of the second feeder are open ends; The second feed member includes a second feed point, and the second feed circuit is coupled to the second feed point; The radiator is further used to generate a third resonance and a fourth resonance, and the third resonance and the fourth resonance are used to jointly support a second working frequency band. The second feeding circuit is used to feed a radio frequency signal of the second working frequency band into the second feeding element.

29. The antenna structure according to any one of claims 17 to 28, characterized in that: A distance D between the first feeding element and the radiator is less than or equal to 5 mm.

30. The antenna structure according to any one of claims 17 to 29, characterized in that: A frequency difference between the resonance point frequency of the first resonance and the resonance point frequency of the second resonance is in a range of 5% to 20% of a first frequency, and the first frequency is the resonance point frequency of the first resonance or the resonance point frequency of the second resonance.

31. The antenna structure according to any one of claims 17 to 30, characterized in that: Based on the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance being less than or equal to 1 GHz, a frequency difference between the resonance point frequency of the first resonance and the resonance point frequency of the second resonance is greater than or equal to 50 and less than or equal to 160 MHz; Based on the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance being greater than 1 GHz and less than or equal to 2 GHz, a frequency difference between the resonance point frequency of the first resonance and the resonance point frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz; Based on the fact that the resonance point frequency of the first resonance and / or the resonance point frequency of the second resonance is greater than 2 GHz and less than or equal to 3 GHz, the frequency difference between the resonance point frequency of the first resonance and the resonance point frequency of the second resonance is greater than or equal to 160 MHz and less than or equal to 500 MHz.

32. An antenna structure, characterized in that: include: floor; A frame, wherein the frame is at least partially spaced apart from the floor, the frame comprises a first position and a second position, the frame is coupled to the floor at the first position, and the frame has a first gap at the second position; a radiator, the radiator comprising a conductive portion of the frame between the first position and the second position; A feeder, wherein the first end and the second end of the feeder are open ends, the radiator and the feeder are spaced apart, and the radiator and the feeder at least partially overlap along a first direction, the first direction is perpendicular to an extension direction of the radiator, and the extension direction of the feeder is in the same direction as the extension direction of the radiator; A feeding circuit, the feeding element comprising a first feeding point, the feeding circuit being coupled to the feeding point; The feeding element and the radiator are used to generate a first resonance and a second resonance, and the first resonance and the second resonance are used to jointly support a first working frequency band; The feeding circuit is used to feed the radio frequency signal of the first working frequency band into the feeding element.

33. The antenna structure according to claim 32, characterized in that: At the resonance point of the first resonance, the currents on the radiator are in the same direction; At the resonance point of the second resonance, the currents on the radiator are in the same direction.

34. The antenna structure according to claim 32 or 33, characterized in that: At the resonance point of the first resonance, the currents on the feeding element are in the same direction; At the resonance point of the second resonance, the currents on the feeding elements are in the same direction.

35. The antenna structure according to any one of claims 32 to 34, characterized in that: The ratio of the length of the overlapping part of the projection of the feeding element on the frame and the radiator to the length of the radiator is greater than or equal to 25%; The projection of the feeding element on the frame covers the first gap.

36. The antenna structure according to any one of claims 32 to 35, characterized in that: The physical length L1 of the radiator and the physical length L2 of the feeding element satisfy: L1≤L2≤L1×200%.

37. The antenna structure according to any one of claims 32 to 36, characterized in that: A distance between a projection of the first slit on the feeder and a center of the feeder is less than or equal to one quarter of a length of the feeder.

38. The antenna structure according to any one of claims 32 to 37, characterized in that: A distance D between the feeder and the radiator is less than or equal to 5 mm.

39. An antenna structure, characterized in that: include: floor; A frame, wherein the frame is at least partially spaced apart from the floor, the frame comprises a first position and a second position, the frame has a first gap at the first position, and the frame is coupled to the floor at the second position; a radiator, the radiator comprising a conductive portion of the frame between the first position and the second position; A feeder, wherein the first end and the second end of the feeder are grounded ends, the radiator and the feeder are spaced apart, and the radiator and the feeder at least partially overlap along a first direction, the direction is perpendicular to an extension direction of the radiator, and the extension direction of the feeder is in the same direction as the extension direction of the radiator; A feeding circuit, the feeding element comprising a feeding point, the feeding circuit being coupled to the feeding point; The feeding element and the radiator are used to generate a first resonance and a second resonance, and the first resonance and the second resonance are used to jointly support a first working frequency band; The first feeding circuit is used to feed the radio frequency signal of the first working frequency band into the feeding element.

40. The antenna structure according to claim 39, characterized in that: At the resonance point of the first resonance, the currents on the radiators on both sides of the grounding point are reversed; At the resonance point of the second resonance, the currents on the radiators on both sides of the grounding point are reversed.

41. The antenna structure according to claim 39 or 40, characterized in that: At the resonance point of the first resonance, the currents on both sides of the center of the feeding element are reversed; At the resonance point of the second resonance, the currents on both sides of the center of the feeding element are reversed.

42. The antenna structure according to any one of claims 39 to 41, characterized in that: The ratio of the length of the overlapping part of the projection of the feeding element on the frame and the radiator to the length of the radiator is greater than or equal to 25%; The projection of the feeding element on the frame covers the second position.

43. The antenna structure according to any one of claims 39 to 42, characterized in that: The physical length L1 of the radiator and the physical length L2 of the feeding element satisfy: L1≤L2≤L1×200%.

44. The antenna structure according to any one of claims 39 to 43, characterized in that: A distance between a projection of the second position on the feeder and a center of the feeder is less than or equal to one quarter of a length of the feeder.

45. The antenna structure according to any one of claims 39 to 44, characterized in that: A distance D between the feeder and the radiator is less than or equal to 5 mm.

46. ​​An antenna structure, characterized in that: include: floor; A frame, wherein the frame is at least partially spaced apart from the floor, the frame comprises a first position and a second position, the frame has a first gap at the first position, and the frame is coupled to the floor at the second position; a radiator, the radiator comprising a conductive portion of the frame between the first position and the second position; A feeder, wherein a first end of the feeder is an open end and a second end is a ground end, the radiator and the feeder are spaced apart, and the radiator and the feeder at least partially overlap along a first direction, the direction is perpendicular to an extension direction of the radiator, and the extension direction of the feeder is in the same direction as the extension direction of the radiator; A feeding circuit and a first capacitive device, the feeding device comprising a feeding point, the first capacitive device coupled between the feeding circuit and the feeding point, and a capacitance value of the first capacitive device being less than or equal to 1.5 pF; The feeding element and the radiator are used to generate a first resonance and a second resonance, and the first resonance and the second resonance are used to jointly support a first working frequency band; The first feeding circuit is used to feed the radio frequency signal of the first working frequency band into the feeding element.

47. The antenna structure according to claim 46, characterized in that: The physical length L1 of the radiator and the physical length L2 of the first feeding element satisfy: L1×50%≤L2≤L1.

48. The antenna structure according to claim 46 or 47, characterized in that: The first end of the feeding element is coupled to the floor through a second capacitive element; When the center frequency of the first operating frequency band is less than or equal to 1 GHz, the capacitance value of the second capacitive component is less than or equal to 10 pF; Based on the fact that the center frequency of the first operating frequency band is greater than 1 GHz and less than or equal to 2 GHz, the capacitance value of the second capacitive component is less than or equal to 5 pF; Based on the fact that the center frequency of the first operating frequency band is greater than 2 GHz and less than or equal to 3 GHz, the capacitance value of the second capacitive component is less than or equal to 3 pF; Based on the fact that the center frequency of the first operating frequency band is greater than 3 GHz, the capacitance value of the second capacitive component is less than or equal to 2 pF.

49. An antenna structure, characterized in that: include: floor; A frame, wherein the frame is at least partially spaced apart from the floor, the frame comprises a first position and a second position, the frame has a first gap at the first position, and the frame is coupled to the floor at the second position; An antenna, comprising: a radiator, the radiator comprising a conductive portion of the frame between the first position and the second position; A feeder, wherein a first end of the feeder is an open end, a second end of the feeder is a ground end, the radiator and the feeder are spaced apart, and the radiator and the feeder at least partially overlap along a first direction, the first direction is perpendicular to an extension direction of the radiator, and the extension direction of the feeder is in the same direction as the extension direction of the radiator; A feeding circuit and a first capacitive device, the feeding device comprising a feeding point, the first capacitive device coupled between the feeding circuit and the feeding point, and a capacitance value of the first capacitive device being less than or equal to 1.5 pF; The feeding element and the radiator are used to generate a first resonance and a second resonance, and the first resonance and the second resonance are used to jointly support a first working frequency band; The feeding circuit is used to feed the radio frequency signal of the first working frequency band into the feeding element.

50. The antenna structure according to claim 49, characterized in that: The first end of the feeding element is coupled to the floor through a second capacitive element; A ratio of a length of an overlapping portion between a projection of the feeding element on the frame and the radiator to a length of the radiator is greater than or equal to 25% and less than or equal to 75%.

51. The antenna structure according to claim 49 or 50, characterized in that: The first end of the feeding element is coupled to the floor through a second capacitive element; The physical length L1 of the radiator and the physical length L2 of the feeding element satisfy: L1×50%≤L2≤L1×100%.

52. The antenna structure according to any one of claims 49 to 51, characterized in that: When the center frequency of the first operating frequency band is less than or equal to 1 GHz, the capacitance value of the second capacitive component is less than or equal to 10 pF; Based on the fact that the center frequency of the first operating frequency band is greater than 1 GHz and less than or equal to 2 GHz, the capacitance value of the second capacitive component is less than or equal to 5 pF; Based on the fact that the center frequency of the first operating frequency band is greater than 2 GHz and less than or equal to 3 GHz, the capacitance value of the second capacitive component is less than or equal to 3 pF; Based on the fact that the center frequency of the first operating frequency band is greater than 3 GHz, the capacitance value of the second capacitive component is less than or equal to 2 pF.

53. An electronic device, characterized in that: The electronic device comprises the antenna structure according to any one of claims 1 to 52.

54. An electronic device, characterized in that: include: A first shell and a second shell, wherein the first shell includes a first antenna structure, and the second shell includes a second antenna structure, the first antenna structure is the antenna structure according to any one of claims 1 to 16, and the second antenna structure is the antenna structure according to any one of claims 17 to 31, wherein the radiator of the first antenna structure is a first radiator, and the radiator of the second antenna structure is a second radiator; A first rotating shaft, the first rotating shaft is located between the first shell and the second shell, and the first rotating shaft is rotatably connected to the first shell and the second shell respectively; Wherein, the first operating frequency band of the first antenna structure is the same as or adjacent to the first operating frequency band of the second antenna structure; Based on the fact that the foldable electronic device is in a folded state, the first radiator and the second radiator at least partially overlap in a second direction, and the second direction is a thickness direction of the foldable electronic device.

55. The electronic device according to claim 54, characterized in that A ratio of the length of the first radiator to the length of the second radiator is greater than or equal to 90% and less than or equal to 110%.

56. The electronic device according to claim 54 or 55, characterized in that: The frame of the first antenna structure is the first frame of the first shell, and the frame of the second antenna structure is the second frame of the second shell; Wherein, the ratio of the length of the overlapping portion between the projection of the first radiator on the second frame and the second radiator to the length of the second radiator is greater than or equal to 50%, and / or, A ratio of a length of an overlapping portion of a projection of the second radiator on the first frame and the first radiator to a length of the first radiator is greater than or equal to 50%.

57. The electronic device according to any one of claims 54 to 56, characterized in that: Based on the foldable electronic device being in a folded state, the first slot of the first antenna structure is aligned with the first slot or the second slot of the second antenna structure in the second direction.

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