Antenna structure and electronic device therefor

Abstract

Provided in the present application are an antenna structure and an electronic device therefor. In the antenna structure, a conductive part of a frame is used as a radiator. Feeding members are provided on one side of the radiator at intervals, the antenna structure feeds an electrical signal for the radiator by means of indirect coupling, and the feeding members and the radiator are used for generating a first resonance and a second resonance. In the antenna structure, two resonances can be used to jointly form a resonance frequency band which is a broadband. Moreover, on the resonance frequency band, the antenna structure has good radiation efficiency and system efficiency, such that the electronic device has a good communication performance.

Description

Antenna structure and electronic device thereof

[0001] This application claims priority to 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”, and the Chinese patent application filed with the China Patent Office on August 28, 2024, with application number 202411194733.3 and application name “An antenna structure and its electronic device”, all contents of which are incorporated by reference into 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 demand for high-speed data transmission increases, the industrial design (ID) trend of electronic devices is toward larger screens and multiple cameras. This significantly reduces antenna clearance, limiting layout space.

[0004] Currently, the communication frequency bands of electronic devices will continue to coexist for a long time, including the third-generation wireless systems (3G), fourth-generation wireless systems (4G), and fifth-generation wireless systems (5G), requiring an increasing number of antennas.

[0005] However, traditional methods such as increasing the size of the antenna's radiator to expand the antenna's efficiency bandwidth have reached a bottleneck. Therefore, while keeping the size of the radiator unchanged, increasing the antenna's efficiency bandwidth has become a top priority.

[0006] Summary of the Invention

[0007] The present application provides an electronic device including an antenna. The antenna utilizes a conductive portion of the electronic device's frame as a radiator. A feeder is spaced apart from one side of the radiator. The antenna feeds an electrical signal to the radiator through indirect coupling, generating a first resonance and a second resonance. The antenna utilizes these two resonances to form a resonant frequency band, thereby expanding the bandwidth.

[0008] In a first aspect, an electronic device is provided, comprising: a floor; a first frame, the first frame being at least partially spaced apart from the floor, the first frame comprising a first position and a second position, the first frame being coupled to the floor at the first position and the second position, the first frame defining a first gap between the first position and the second position, the first gap being located in a central region between the first position and the second position; an antenna, the antenna comprising: a first radiator, the first radiator comprising 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 being an open end, the first radiator and the first feeder being spaced apart, and the first radiator and the first feeder at least partially overlapping along a first direction, the first direction being perpendicular to an extension direction of the radiator or perpendicular to an extension direction of the feeder; a first feeding circuit, the first feeding circuit comprising a first feeding point, the first feeding circuit being coupled to the first feeding point; wherein the first feeding circuit and the first radiator are configured to generate a first resonance and a second resonance, the first resonance and the second resonance being configured to jointly support an operating frequency band of the electronic device.

[0009] According to an embodiment of the present application, the first radiator can form a radiator structure consistent with a slot antenna. When the first feeding circuit feeds an electrical signal, the antenna can generate the aforementioned first and second resonances to expand the antenna's operating bandwidth. Both the first and second resonances can be considered to be generated by the slot CM mode. Since the slot CM mode has high radiation efficiency and system efficiency, the antenna has good radiation efficiency and system efficiency within the operating frequency band formed by the first and second resonances.

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

[0011] In combination with the first aspect, in some implementations of the first aspect, 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.

[0012] 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 opens 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.

[0013] In combination with the first aspect, in some implementations of the first aspect, the first radiator is further configured to generate a third resonance; at a resonance point of the third resonance, currents on the first radiators on both sides of the first gap are reversed.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the second end of the first feeding element is an open end.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the second end of the first feeding element is grounded through a capacitive device.

[0016] In combination with the first aspect, in some implementations of the first aspect, 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.

[0017] In combination with the first aspect, in certain implementations of the first aspect, a first shell and a second shell are provided, wherein the first shell includes a first frame, the second shell includes a 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, and the second frame has a second slit and a third slit at the third position and the fourth position, respectively; a 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 portion 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, the second radiator and the second feeder are spaced apart, 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.

[0018] In combination with the first aspect, in certain implementations of the first aspect, a first shell and a second shell are provided, wherein the first shell includes a first frame, the second shell includes a 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, and the second frame is coupled to the floor at the third position and the fourth position; a 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, wherein the first end and the second end of the second radiator are open ends; a second feeder, the second feeder is a conductive portion of the second frame between the third position and the fourth position, the second radiator and the second feeder are spaced apart, 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.

[0019] In combination with the first aspect, in certain implementations of the first aspect, the antenna includes: a second feeder and a second feed circuit; wherein the second feeder is spaced apart from the first feeder and the first 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 grounded ends; the second feeder includes a second feed point, and the second feed circuit is coupled to the second feed 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.

[0020] 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%.

[0021] 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%.

[0022] 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.

[0023] 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 power feeder is arranged on a surface of the bracket.

[0024] In a second aspect, an electronic device is provided, comprising: a floor; a first frame, the first frame being at least partially spaced apart from the floor, the first frame comprising a grounding point, a first position, and a second position, the first frame having a first gap and a second gap respectively defined at the first position and the second position, the grounding point being located in a central area between the first position and the second position, and the first frame being coupled to the floor at the grounding point; an antenna, the antenna comprising: a first radiator, the first radiator comprising a conductive portion of the first frame between the first position and the second position; a first feeder, a first end of the first feeder being a grounding end, the first radiator and the first feeder being spaced apart, and the first radiator and the first feeder at least partially overlapping along a first direction, the first direction being a direction perpendicular to an extension direction of the first radiator; a first feeding circuit, the first feeding circuit comprising a first feeding point, the first feeding circuit being coupled to the first feeding point; wherein the first feeding element and the first radiator are configured to generate a first resonance and a second resonance, the first resonance and the second resonance being configured to jointly support an operating frequency band of the electronic device.

[0025] According to embodiments of the present application, the first radiator can form a radiator structure consistent with a linear antenna. When an electrical signal is fed into the first feeding circuit, the antenna can generate the aforementioned first and second resonances, thereby expanding the antenna's operating bandwidth. Both the first and second resonances can be considered to be generated by a linear CM mode. Because the linear CM mode has high radiation efficiency and system efficiency, the antenna exhibits good radiation efficiency and system efficiency within the operating frequency band formed by the first and second resonances.

[0026] 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.

[0027] In combination with the second aspect, in some implementations of the second aspect, 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.

[0028] In combination with the second aspect, in certain implementations of the second aspect, the first frame further 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.

[0029] In combination with the second aspect, in some implementations of the second aspect, the first radiator is further configured to generate a third resonance; and at a resonance point of the third resonance, the current on the first radiator is reversed.

[0030] In combination with the second aspect, in certain implementations of the second aspect, the second end of the first feeding element is a ground end.

[0031] In combination with the second aspect, in certain implementations of the second aspect, the second end of the first feeding element is physically grounded or grounded through an inductive device.

[0032] 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 the center 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 portion 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.

[0033] In combination with the second aspect, in certain implementations of the second aspect, a first shell and a second shell are provided, wherein the first shell includes a first frame, the second shell includes a 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, and the second frame has a third slit and a fourth slit at the third position and the fourth position, respectively; a 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 portion of the second frame between the third position and the fourth position, the second radiator and the second feeder are spaced apart, 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.

[0034] In combination with the second aspect, in certain implementations of the second aspect, the antenna includes: a second feeder and a second feed circuit; wherein the second feeder is spaced apart from the first feeder and the first 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 feeder includes a second feed point, and the second feed circuit is coupled to the second feed 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.

[0035] 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%.

[0036] 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%.

[0037] 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.

[0038] 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 power feeder is disposed on a surface of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG1 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0040] FIG2 is a schematic diagram showing the structure of the common mode of an antenna provided in the present application and the corresponding distribution of current and electric field.

[0041] FIG3 is a schematic diagram showing the structure of a differential mode of an antenna provided in the present application and the corresponding distribution of current and electric field.

[0042] FIG4 is a diagram showing the structure of the common mode of the antenna provided in this application and the corresponding distribution of current, electric field, and magnetic current.

[0043] FIG5 is a diagram showing the structure of the differential mode of the antenna provided in this application and the corresponding distribution of current, electric field, and magnetic current.

[0044] FIG6 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0045] FIG. 7 is an S-parameter simulation result of the antenna 100 in the electronic device 10 shown in FIG. 6 .

[0046] FIG. 8 shows simulation results of the system efficiency and radiation efficiency of the antenna 100 in the electronic device 10 shown in FIG. 6 .

[0047] FIG9 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0048] FIG10 is a partial cross-sectional view of an electronic device 10 provided in an embodiment of the present application along a first direction.

[0049] FIG. 11 is an S-parameter simulation result of the antenna 200 in the electronic device 10 shown in FIG. 9 .

[0050] FIG. 12 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG. 9 .

[0051] FIG13 is a schematic diagram of current distribution of the antenna shown in FIG9 at the first resonance point (1.87 GHz).

[0052] FIG14 is a schematic diagram of current distribution of the antenna shown in FIG9 at the second resonance point (2.23 GHz).

[0053] FIG15 is a schematic diagram of current distribution of the antenna shown in FIG9 at 3.19 GHz.

[0054] FIG16 is a schematic diagram of the electric field distribution of the antenna shown in FIG9 at the first resonance point (1.87 GHz).

[0055] FIG17 is a schematic diagram of the electric field distribution of the antenna shown in FIG9 at the second resonance point (2.23 GHz).

[0056] FIG18 is a schematic diagram of the electric field distribution of the antenna shown in FIG9 at 3.19 GHz.

[0057] FIG19 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0058] FIG. 20 shows S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG. 19 under different conditions.

[0059] FIG. 21 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG. 19 under different conditions.

[0060] FIG. 22 is an S-parameter simulation result of the antenna when the feeding element is set at different positions in the electronic device 10 shown in FIG. 19 .

[0061] FIG. 23 shows simulation results of the system efficiency and radiation efficiency of the antenna when the feeding element is set at different positions in the electronic device 10 shown in FIG. 19 .

[0062] FIG24 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0063] FIG. 25 shows S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG. 24 .

[0064] FIG. 26 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG. 24 .

[0065] FIG27 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0066] FIG. 28 shows S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG. 27 .

[0067] FIG. 29 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG. 27 .

[0068] FIG30 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0069] FIG31 shows an S-parameter simulation result of the antenna 200 in the electronic device 10 shown in FIG9 .

[0070] FIG. 32 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG. 30 .

[0071] FIG33 is a schematic diagram of current distribution of the antenna shown in FIG30 at the first resonance point (2.12 GHz).

[0072] FIG34 is a schematic diagram of current distribution of the antenna shown in FIG30 at the second resonance point (2.45 GHz).

[0073] FIG35 is a schematic diagram of current distribution of the antenna shown in FIG30 at the third resonance point (3.43 GHz).

[0074] FIG36 is a schematic diagram of current distribution of the antenna shown in FIG30 at the fourth resonance point (3.54 GHz).

[0075] FIG37 is a schematic diagram of the electric field distribution of the antenna shown in FIG30 at the first resonance point (2.12 GHz).

[0076] FIG38 is a schematic diagram of the electric field distribution of the antenna shown in FIG30 at the second resonance point (2.45 GHz).

[0077] FIG39 is a schematic diagram of the electric field distribution of the antenna shown in FIG30 at the third resonance point (3.43 GHz).

[0078] FIG40 is a schematic diagram of the electric field distribution of the antenna shown in FIG30 at the fourth resonance point (3.54 GHz).

[0079] FIG41 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0080] FIG. 42 shows S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG. 41 .

[0081] FIG. 43 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG. 41 .

[0082] FIG44 is a schematic diagram of current distribution of the antenna shown in FIG41 at the first resonance point (1.79 GHz).

[0083] FIG45 is a schematic diagram showing the current distribution of the antenna shown in FIG30 at the second resonance point (2.01 GHz).

[0084] FIG46 is a schematic diagram showing the current distribution of the antenna shown in FIG30 at the fifth resonance point (2.24 GHz).

[0085] FIG47 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0086] FIG48 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0087] Figure 49 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0088] FIG50 shows the S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG49.

[0089] FIG. 51 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG. 49 .

[0090] Figure 52 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0091] FIG53 shows the S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG52 .

[0092] FIG. 54 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG. 52 .

[0093] FIG55 is a schematic diagram of current distribution of the antenna shown in FIG52 at the first resonance point (1.88 GHz).

[0094] FIG56 is a schematic diagram of current distribution of the antenna shown in FIG52 at the second resonance point (2.16 GHz).

[0095] Figure 57 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0096] Figure 58 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0097] FIG59 shows the S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG58 .

[0098] FIG60 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG58.

[0099] Figure 61 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0100] FIG62 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0101] FIG63 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0102] FIG64 shows S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG62 .

[0103] FIG. 65 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG. 62 .

[0104] Figure 66 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0105] Figure 67 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0106] FIG68 shows S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG67 .

[0107] FIG69 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG67 .

[0108] FIG70 shows the S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG67 .

[0109] FIG. 71 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG. 67 .

[0110] Figure 72 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0111] FIG73 shows the S-parameter simulation results of the antenna 200 in the electronic device 10 shown in FIG72 .

[0112] FIG74 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 in the electronic device 10 shown in FIG72 .

[0113] Figure 75 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0114] Figure 76 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0115] Figure 77 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0116] FIG78 is an S-parameter simulation result of the antenna 200 when the electronic device 10 shown in FIG76 is in the unfolded state.

[0117] FIG79 shows the S-parameter simulation results of the antenna 200 when the electronic device 10 shown in FIG76 is in the folded state.

[0118] FIG80 is a simulation result of the system efficiency and radiation efficiency of the antenna 200 when the electronic device 10 shown in FIG76 is in the unfolded state.

[0119] FIG81 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 when the electronic device 10 shown in FIG76 is in the folded state.

[0120] Figure 82 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0121] FIG83 is an S-parameter simulation result of the antenna 200 when the electronic device 10 shown in FIG82 is in the unfolded state.

[0122] FIG84 shows the S-parameter simulation results of the antenna 200 when the electronic device 10 shown in FIG82 is in the folded state.

[0123] FIG85 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 when the electronic device 10 shown in FIG82 is in the unfolded state.

[0124] FIG86 shows simulation results of the system efficiency and radiation efficiency of the antenna 200 when the electronic device 10 shown in FIG82 is in the folded state.

[0125] FIG87 shows simulation results of the directivity coefficient of the antenna 200 when the electronic device 10 shown in FIG82 is in the unfolded state.

[0126] Figure 88 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0127] Figure 89 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0128] Figure 90 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0129] Figure 91 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0130] The technical solution in this application will be described below with reference to the accompanying drawings.

[0131] It should be understood that the term "and / or" as used herein is simply a term used to describe the existence of three possible relationships between related objects. For example, "A and / or B" can represent the existence of A alone, the existence of both A and B, and the existence of B alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0132] When used in this application, "within the range of...", unless it is specifically stated that the 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.

[0133] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupling connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be referred to as "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the form in which different components in the circuit structure are connected 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 referred to as capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gap between two conductive parts.

[0134] Component / device: includes at least one of lumped component / device and distributed component / device.

[0135] Lumped component / device: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For a signal, the component's characteristics remain constant at all times, regardless of frequency.

[0136] 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.

[0137] Capacitance: This 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.

[0138] Inductance: This 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 material.

[0139] 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.

[0140] 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.

[0141] Radiator: A device in an antenna used to receive / send electromagnetic wave radiation. In some cases, the narrow meaning of "antenna" is the radiator, which converts the guided wave energy from the transmitter into radio waves, or converts radio waves into guided wave energy, used to radiate and receive radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, where it is converted into a certain polarized electromagnetic wave energy and radiated in the desired direction. The receiving radiator converts the electromagnetic wave energy of a certain polarization from a specific direction in space into modulated high-frequency current energy and transmits it to the receiver input via the feeder line.

[0142] 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 can be simply referred to as a linear antenna. In one embodiment, the linear radiator can be implemented by a conductive frame, and can also be called a frame antenna. In one embodiment, the linear radiator can be implemented by a bracket conductor, and can also be called a bracket antenna. In one embodiment, the wire diameter (for example, including thickness and width) of the linear radiator, or the radiator of the linear antenna is much smaller than the wavelength (for example, the wavelength of the medium) (for example, less than 1 / 16 of the wavelength), and the length can be comparable to the wavelength (for example, the wavelength of the medium) (for example, 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 oscillator 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 typically includes two radiating branches, and each branch is fed by a feeding portion 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 a PIFA, Planar Inverted F Antenna). 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 circular, rectangular, annular, etc., and the present application does not limit the specific shape. The structure of a microstrip antenna generally consists of a dielectric substrate, a radiator, and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0143] The radiator may also include a slot or slot formed in a conductor, for example, a closed or semi-closed slot or slot formed in a grounded conductor surface. In one embodiment, a slotted or slotted radiator may be referred to as a slot antenna or slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slot 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 approximately 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 slot may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slot (e.g., a closed slot or slot with an additional opening) may be referred to as an open slot antenna. In some embodiments, the slot is elongated. In some embodiments, the slot is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the slot is approximately an integer multiple of the wavelength (e.g., one wavelength). In some embodiments, the slot can be fed with a transmission line spanning one or both sides, thereby exciting a radio frequency electromagnetic field in the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a conductive frame with both ends grounded, also known as a frame antenna. In this embodiment, the slot antenna or slot antenna can be considered to include a linear radiator spaced from the floor and grounded at both ends, thereby forming a closed or semi-enclosed slot or slot. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a bracket conductor with both ends grounded, also known as a bracket antenna.

[0144] 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 the RFIC can be considered to include an RF 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.

[0145] In some embodiments, the electronic device may also include a test socket (or RF socket or RF test socket). This test socket can be used to insert a coaxial cable and test the characteristics of the RF front-end circuit or antenna radiator through the cable. The RF front-end circuit can be considered as the circuit portion coupled between the test socket and the transceiver.

[0146] 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.

[0147] 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 radio frequency channel in a transceiver (for example, a port (pin) of a radio frequency chip); they can also share a radio frequency front-end circuit, for example, processing signals through a switch or amplifier in a radio frequency front-end.

[0148] It should also be understood that two feeding circuits in the first / second / ...Nth feeding circuit in the present application usually correspond to two radio frequency test sockets in the electronic device.

[0149] A matching circuit is a circuit used to adjust the radiation characteristics of an antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. In another embodiment, the matching circuit is coupled between the test socket and the radiator. Typically, the matching circuit is a combination of circuits coupled between the radiator and the ground plane. In one embodiment, the matching circuit may include a switch and / or an electronic component; the switch may be an electronic component used to switch the coupling connection of the radiator. The matching circuit performs impedance matching and / or frequency tuning functions. Generally, it is considered to be part of the antenna.

[0150] The grounding structure / feeding structure may include a connector, such as a metal spring, through which the radiator is coupled to the floor / 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 wire.

[0151] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of an antenna radiator should not be narrowly understood as an end point or end portion that is physically disconnected from other radiators. It can also be considered as a point or a section on a continuous radiator. In one embodiment, an "end / point" may include a connection / coupling area on an antenna radiator that is coupled to other conductive structures. For example, the feeding end / feeding point may be a coupling area on an antenna radiator that is coupled to a feeding structure (for example, an area facing a portion of the feeding structure). For another example, the grounding end / grounding point may be a connection / coupling area on an antenna radiator that is coupled to a grounding structure.

[0152] Open end, closed end: In some embodiments, the terms "open end" and "closed end" refer to, for example, whether or not they are grounded. A closed end is grounded, while an open end is not. In one embodiment, an open end may also be referred to as a floating end, a free end, an open end, or an open-circuit end. In one embodiment, a closed end may also be referred to as a grounded end or a short-circuit end. It should be understood that in some embodiments, an open end may be coupled to other conductors to transfer coupled energy (which may be understood as transferring current).

[0153] 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.

[0154] 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.

[0155] 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.

[0156] In some embodiments, the "closed end" can also be understood from the perspective of current distribution. The closed end or the grounded end 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, coupling electronic devices (for example, inductive devices, etc.) through the closed end can maintain the current distribution characteristics of the larger current point / small electric field point. In one embodiment, opening a gap at or near the closed end (for example, a gap filled with insulating material) can maintain the current distribution characteristics of the larger current point / small electric field point.

[0157] In some embodiments, the understanding of "open end" can also be viewed from the perspective of current distribution. The open end or floating end can be understood as a point with low current on the radiator, or as a point with high 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 low current point / high electric field point.

[0158] It should be understood that coupling electronic devices (for example, capacitors, inductors, etc.) to the radiator end at a gap (from the perspective of the radiator structure, 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.

[0159] The “suspended radiator” mentioned in the embodiments of the present application means that the radiator is not directly connected to the feed line / feed branch and / or the ground line / ground branch, but is fed and / or grounded through indirect coupling.

[0160] It should be understood that the "suspended" in "suspended end" and "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.

[0161] 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 unidirectional distributed current on a conductor that is bent or ring-shaped (for example, the current path is also bent or ring-shaped), it should be understood that, for example, the main currents stimulated on the conductors on both sides of the ring conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) are opposite in direction, which still falls within the definition of the unidirectional distributed current in the embodiments of the present application. In one embodiment, the current same direction on a conductor can refer to the current on the conductor having no reversal point. In one embodiment, the current reverse on a conductor can refer to the current on the conductor having at least one reversal point. In one embodiment, the current same direction on two conductors can refer to the current on both conductors having no reversal point and flowing in the same direction. In one embodiment, the current reverse on two conductors can refer to the current on both conductors having no reversal point and flowing in opposite directions. The current same direction / reversal on multiple conductors can be understood accordingly.

[0162] The electric field in the embodiments of the present application is in the same direction or opposite direction, which should be understood as the direction of the main electric field generated by the conductor in the space (for example, the electric field between the conductor and the floor) being in the same direction or opposite direction. For example, when a unidirectional distributed electric field is excited on a curved or ring-shaped conductor (for example, the gap formed between the floor and the conductor is also curved 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 fields excited in the gaps on both sides of the ring-shaped conductor (for example, the gaps on both sides of the gap of the conductor surrounding a gap) are opposite in direction, they still fall within the definition of unidirectional distributed electric fields in the embodiments of the present application. In one embodiment, the electric field in the same direction between a conductor and the floor can mean that there is no reversal point between the electric field between the conductor and the floor. In one embodiment, the electric field in the opposite direction between a conductor and the floor can mean that there is at least one reversal point between the electric field between the conductor and the floor. In one embodiment, the electric field in the same direction between two conductors and the floor can mean that there is no reversal point between the electric field between the two conductors and the floor, and the electric fields between the two conductors and the floor radiate in the same direction (for example, the positive direction of the z-axis). In one embodiment, the electric fields between two conductors and the floor are in opposite directions, which means that the electric fields between the two conductors and the floor have no reverse points and flow in opposite directions. The electric fields between multiple conductors and the floor can be understood to be in the same or opposite directions accordingly.

[0163] Resonance / resonance frequency: The resonant frequency is also called the resonance frequency. The resonant 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 generate a corresponding fundamental mode resonance.

[0164] 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.

[0165] Communication frequency band / operating frequency band: Regardless of the type of antenna, it always operates within a certain frequency range (bandwidth). For example, an antenna that supports the B40 frequency band operates between 2300MHz and 2400MHz, or in other words, the antenna's operating frequency band includes the B40 frequency band. The frequency range that meets the required specifications can be considered the antenna's operating frequency band.

[0166] 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 overlap one or more operating frequency bands of the antenna.

[0167] Electrical length: It can refer to the ratio of physical length (i.e. mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

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

[0169] Wavelength: Or operating wavelength, this 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, if the center frequency of the B1 uplink frequency band (resonant frequency 1920MHz to 1980MHz) is 1955MHz, the operating wavelength can be the wavelength calculated using 1955MHz. "Operating wavelength" is not limited to the center frequency; it can also refer to the wavelength corresponding to a non-center frequency of the resonant frequency or 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 8 m / s. The wavelength of the radiation signal in the medium can be calculated as follows: / frequency, where 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" can 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 physical or measured length. It should be understood that the "length" mentioned in the embodiments of this application is different from the "electrical length." The "length of the radiator" should be understood to be equivalent to the "physical length of the radiator." The same applies to the lengths of other structures in the embodiments of this application.

[0172] Those skilled in the art will understand that efficiency is generally expressed as a percentage, which has a corresponding conversion relationship with dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0173] Antenna pattern: Also known as radiation pattern. It is a graph showing how the relative field strength (normalized modulus) of the antenna's radiation field changes with direction at a certain distance from the antenna (far field). It is usually represented by two mutually perpendicular plane patterns passing through the antenna's direction of maximum radiation.

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

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

[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 an antenna into space (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. Active power input to the antenna = antenna input power minus power loss; power loss primarily includes return loss and metal ohmic loss and / or dielectric loss. Radiation efficiency measures the antenna's radiation capability, and both metal loss and dielectric loss contribute to it.

[0178] Those skilled in the art will understand that efficiency is generally expressed as a percentage, which has a corresponding conversion relationship with dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0179] Antenna return loss: This can be understood as the ratio of the signal power reflected back to the antenna port by the antenna circuit to the antenna port's transmitted power. The smaller the reflected signal, the larger the signal radiated from the antenna into space, and the greater the antenna's radiation efficiency. The larger the reflected signal, the smaller the signal radiated from the antenna into space, and the lower the antenna's radiation efficiency.

[0180] Antenna return loss can be expressed using the S11 parameter, a type of S parameter. S11 represents the reflection coefficient and characterizes the antenna's transmission efficiency. The S11 parameter is typically negative. A smaller S11 parameter indicates lower antenna return loss and less energy reflected back from the antenna itself, meaning more energy actually enters the antenna and higher system efficiency. A larger S11 parameter indicates greater antenna return loss and lower system efficiency.

[0181] It should be noted that in engineering, an S11 value of -6dB is generally used as a standard. When the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or the antenna can be considered to have 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 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 the sub-6GHz frequency band in 5G, and the first frequency band and the second frequency band can be considered to be the same frequency.

[0184] The first frequency band and the second frequency band have at least partial frequency overlap. 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, in the embodiments of the present application, the first frequency band and the second frequency band being adjacent can be understood as:

[0186] In the first and second frequency bands, the spacing between the starting frequency of the higher frequency band and the ending frequency 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 200 MHz). For example, if the first frequency band includes B3 (1.71-1.785 GHz) in LTE and the second frequency band includes L1 (1578.42±1.023 MHz) in GPS, and B3 (1.71-1.785 GHz) and L1 (1578.42±1.023 MHz) are adjacent frequency bands, then the first and second frequency bands can be considered 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 generally 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. "Ground" can be used for grounding components in an electronic device. In one embodiment, "ground" can be the grounding layer of a circuit board of an electronic device, or it can be the grounding plate formed by the middle frame of the electronic device, or the grounding metal layer formed by the metal film under the 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 fiberglass, 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, touch screen, input buttons, transmitter, processor, memory, battery, charging circuit, and system-on-chip (SoC) structures can be mounted on or connected to a circuit board, or electrically connected to a trace layer and / or ground layer in the circuit board. For example, a radio frequency source can be located on a trace layer.

[0188] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of a conductive material. In one embodiment, the conductive material can be any of the following: copper, aluminum, stainless steel, brass, and alloys thereof, 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, a graphite-coated substrate, a copper-plated substrate, a brass-plated substrate, and an aluminum-plated substrate. Those skilled in the art will appreciate that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0189] Grounding refers to coupling to the ground / floor in any manner. In one embodiment, grounding can be achieved through direct grounding, such as physical grounding (or physical ground) at a specific location on the frame through a portion of the midframe's structural components. In one embodiment, grounding can be achieved through device grounding, such as through a series or parallel connection of a capacitor, inductor, or resistor (or device ground).

[0190] The technical solutions of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0191] As shown in FIG1 , electronic device 10 may include a cover 13, a display / module 15, a printed circuit board (PCB) 17, a middle frame 19, and a rear cover 21. It should be understood that in some embodiments, cover 13 may be a glass cover or may be replaced with a cover made of other materials, such as a PET (Polyethylene terephthalate) material.

[0192] The cover plate 13 may be disposed closely against 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 diode (OLED) display panel, etc., which is not limited in the embodiment of the present application.

[0194] The middle frame 19 mainly supports the entire device. FIG1 shows that the PCB 17 is arranged between the middle frame 19 and the back cover 21. It should be understood that in one embodiment, the PCB 17 can also be arranged between the middle frame 19 and the display module 15. This embodiment of the present application does not limit this. The printed circuit board PCB 17 can be made of a flame-resistant 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-resistant material, and the Rogers dielectric board is a high-frequency board. Electronic components, such as radio frequency chips, are carried on the PCB 17. In one embodiment, a metal layer can be provided on the printed circuit board PCB 17. The metal layer can be used to ground the electronic components carried on the printed circuit board PCB 17, and can also be used to ground 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 the PCB 17. In one embodiment, the metal layer used for grounding can be provided on the side of the printed circuit board PCB 17 near the middle frame 19. In one embodiment, the edge of the printed circuit board PCB 17 can be considered the edge of its ground layer. In one embodiment, the metal middle frame 19 can also be used to ground the aforementioned components. The electronic device 10 may also have other floor / grounding plates / grounding layers, as previously described and will not be further described 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 this is not limited in this embodiment of the present application. 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. 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 metal 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, to form the appearance of a non-metallic frame, which is suitable for non-metallic ID.

[0197] The middle frame 19 may include a border 11, and the middle frame 19 including the border 11 is an integral part that can support the electronic devices in the whole machine. The cover 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 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 13, the back cover 21, the border 11 or the middle frame 19, or to part or all of any combination of the cover 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 transmit and receive radio frequency signals. A gap can exist between this portion of the frame serving as the radiator and the rest of the middle frame 19 to ensure a good radiation environment for the antenna radiator. In one embodiment, the middle frame 19 can be provided with an aperture in this portion of the frame serving as the radiator to facilitate antenna radiation.

[0199] Alternatively, the frame 11 may not be considered as part of the middle frame 19. In one embodiment, the frame 11 may be connected to the middle frame 19 and formed as one piece. 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, screws, welding, etc. The protrusion of the frame 11 can 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 the 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 can be made of metal, non-conductive materials such as glass or plastic, or a combination of conductive and non-conductive materials. In one embodiment, the conductive back cover 21 can replace the middle frame 19 and integrate with the frame 11 to support the electronic components within the 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 serve as a reference ground for 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 set 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 set close to the frame 11 to minimize the volume occupied by the antenna radiator and 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 set close to the frame 11 means that the antenna radiator can be set close to the frame 11, or it can be set 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 electronic device 10 may also be disposed within the housing, such as a bracket antenna or millimeter-wave antenna (not shown in FIG1 ). The clearance for the antenna disposed within the housing can be provided by a slot / opening in any of the middle frame, and / or the frame, and / or the back cover, and / or the display screen, or by a non-conductive gap / aperture formed between any of these. The antenna clearance ensures the antenna's radiation characteristics. It should be understood that the antenna clearance can be a non-conductive area formed by any conductive component within electronic device 10, through which the antenna radiates signals to the outside world. In one embodiment, antenna 40 may 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 may also be a transparent structure embedded within the screen of electronic device 10, such that the antenna is a transparent antenna unit embedded within the screen of electronic device 10.

[0205] FIG. 1 only schematically illustrates some components of the electronic device 10 , and the actual shapes, sizes, and structures of these components are not limited by FIG. 1 .

[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 surface, the surface where the back cover is located can be considered as the back surface, and the surface where the frame is located can be considered as the side surface.

[0207] It should be understood that in the embodiments of the present application, when a user holds an 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 a user holds an 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, the four antenna modes involved in this application will be introduced from Figures 2 to 5. Among them, Figure 2 is a schematic diagram of the structure of the common mode mode of an antenna provided by this application and the corresponding current and electric field distribution. Figure 3 is a schematic diagram of the structure of the differential mode mode of another antenna provided by this application and the corresponding current and electric field distribution. The antenna radiator in Figures 2 and 3 is open at both ends, and its common mode mode and differential mode can be called a line common mode mode and a line differential mode mode, respectively. Figure 4 is a schematic diagram of the structure of the common mode mode of an antenna provided by this application and the corresponding current, electric field, and magnetic current distribution. Figure 5 is a schematic diagram of the structure of the differential mode mode of another antenna provided by this application and the corresponding current, electric field, and magnetic current distribution. The antenna radiator in Figures 4 and 5 is grounded at both ends, and its common mode mode and differential mode can be called a slot common mode mode and a slot differential mode mode, respectively.

[0209] It should be understood that the "common mode" or "CM mode" in this application includes the line common mode mode and the slot common mode mode, and the "differential mode mode" or "DM mode" in this application includes the line differential mode mode and the 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 and line differential mode generated on the same radiator, or refers to the slot common mode and slot differential 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] (a) in Figure 2 shows that the radiator of the antenna 40 is open at both ends and is 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 being connected to the radiator and the other end being grounded, wherein the connection point between the feeding circuit and the radiator (feeding point) is located at the center of the radiator. 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] (b) in FIG2 shows the current and electric field distribution of the antenna 40. As shown in (b) in FIG2, 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. As shown in (b) in FIG2, the current at the feed line 42 is distributed in the same direction. Based on the same direction distribution of the current at the feed line 42, the feeding shown in (a) in FIG2 can be called line CM feeding. Based on the opposite distribution of the current on both sides of the connection between the radiator and the feed line 42, the antenna mode shown in (b) in FIG2 can be called a line CM mode (also referred to as a CM mode for short, for example, for a linear antenna, the CM mode refers to a line CM mode). The current and electric field shown in (b) in FIG2 can be respectively referred to as the current and electric field of the line CM mode.

[0215] The current is stronger at the center 41 of the antenna 40 (the highest current point is near the center 41 of the antenna 40) and weaker at both ends of the antenna 40, as shown in FIG2(b). The electric field is weaker at the center 41 of the antenna 40 and stronger at both ends of the antenna 40.

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

[0217] As shown in Figure 3(a), the left and right ends of the two radiators of antenna 50 are open, and a feed circuit is connected at a center position 51. In one embodiment, antenna 50 uses an anti-symmetrical feed. One end of the feed circuit is connected to one of the radiators via a feed line 52, and the other end of the feed circuit is connected to the other radiator via a feed line 52. Center position 51 can be the geometric center of 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 the positive and negative poles of the feed unit being connected to two connection points near the aforementioned midpoint of the radiator. In one embodiment, the signals output by the positive and negative poles of the feed unit have the same amplitude but opposite phases, for example, a phase difference of 180°±10°.

[0219] (b) in FIG3 shows the current and electric field distribution of the antenna 50. As shown in (b) in FIG3, the current is distributed in the same direction on both sides of the middle position 51 of the antenna 50, for example, in an antisymmetric distribution; the electric field is distributed in opposite directions on both sides of the middle position 51. As shown in (b) in FIG3, the current at the feed line 52 is distributed in opposite directions. Based on the opposite distribution of the current at the feed line 52, the feeding shown in (a) in FIG3 can be called line DM feeding. Based on the current being distributed in the same direction on both sides of the connection between the radiator and the feed line 52, the antenna mode shown in (b) in FIG3 can be called a line DM mode (it can also be simply referred to as a DM mode. For example, for a linear antenna, the DM mode refers to a line DM mode). The current and electric field shown in (b) in FIG3 can be respectively referred to as the current and electric field of the line DM mode.

[0220] The current is strong at the center 51 of the antenna 50 (the current is strong near the center 51 of the antenna 50) and weak at both ends of the antenna 50, as shown in FIG3(b). The electric field is weak at the center 51 of the antenna 50 and strong at both ends of the antenna 50.

[0221] It should be understood that the antenna radiator can be understood as a metal structural member that generates radiation. The number of radiators can be one, as shown in FIG2 , or two, as shown in FIG3 , and can be adjusted according to actual design or production needs. For example, for the line CM mode, two radiators can be used as shown in FIG3 , with the two ends of the two radiators 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 to the two ends of the two radiators close to each other, and an effect similar to the antenna structure shown in FIG2 can also be obtained. Correspondingly, for the line DM mode, a single radiator can be used as shown in FIG2 , with two feeding points set in the middle of the radiator and an antisymmetric feeding method is adopted. For example, if the two symmetrical feeding points on the radiator are fed with signals of the same amplitude and opposite phase, an effect similar to the antenna structure shown in FIG3 can also be obtained.

[0222] 3. Line CM-DM mode

[0223] FIG2 and FIG3 above respectively show the line CM mode and line DM mode generated by adopting different feeding methods when both ends of the radiator are open.

[0224] When the antenna uses asymmetric feeding (the feeding point is offset from the center of the radiator, including side feeding or offset feeding), or the radiator's grounding point (where it couples with the floor) is asymmetric (the grounding point is offset from the center of the radiator), the antenna can simultaneously produce a first resonance and a second resonance, corresponding to the linear CM mode and the linear DM mode, respectively. For example, the first resonance corresponds to the linear CM mode, with the current and electric field distributions shown in Figure 2(b). The second resonance corresponds to the linear DM mode, with the current and electric field distributions shown in Figure 3(b).

[0225] 4. Slot CM mode

[0226] The radiator of the antenna 60 shown in FIG4(a) has a hollowed-out slot or gap 61, or the radiator of the antenna 60 and the ground (e.g., a floor, which can be a PCB) can enclose the slot or slot 61. The slot 61 can be formed by cutting a groove in the floor. An opening 62 is provided on one side of the slot 61, and the opening 62 can be specifically located in the middle of the side. The middle 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 of ​​the opening 62 on the radiator covers the middle of the side. The opening 62 can be connected to the feed 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 feed circuit being connected to the two ends of the radiator respectively. The signals output by the positive and negative poles of the feed circuit have the same amplitude and opposite phase, for example, a phase difference of 180°±10°.

[0227] Figure 4(b) shows the current, electric field, and magnetic current distribution of antenna 60. As shown in Figure 4(b), the current on the conductor surrounding slot 61 (e.g., the floor and / or radiator 60) is distributed in the same direction around slot 61. The electric field is distributed in opposite directions on either side of the center of slot 61, and the magnetic current is distributed in opposite directions on either side of the center of slot 61. As shown in Figure 4(b), the electric field at opening 62 (e.g., the feed point) is in the same direction, and the magnetic current at opening 62 (e.g., the feed point) is in the same direction. Based on the same direction of the magnetic current at opening 62 (the feed point), the feeding shown in Figure 4(a) can be referred to as slot CM feeding. Based on the same direction of current on the radiator on either side of opening 62 (e.g., antisymmetric distribution), or based on the same direction of current on the conductor surrounding slot 61 around slot 61, the antenna pattern shown in Figure 4(b) can be referred to as a slot CM mode (or simply CM mode, for example, for a slot antenna, the CM mode refers to the slot CM mode). The electric field, current, and magnetic flow distributions shown in FIG4( b ) can be referred to as the electric field, current, and magnetic flow 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 highest point of the electric field is near the middle of the antenna 60) and weak at both ends of the antenna 60, as shown in FIG4(b).

[0229] 5. Slot DM mode

[0230] As shown in (a) of FIG5 , the radiator of the antenna 70 has a hollow slot or gap 72, or the radiator of the antenna 70 and the ground (e.g., a floor, which can be a PCB) enclose the slot or slot 72. The slot 72 can be formed by cutting a slot in the floor. The middle position 71 of the slot 72 is connected to the feed circuit, and symmetrical feeding is adopted. It should be understood that symmetrical feeding can be understood as one end of the feed circuit being connected to the radiator and the other end being grounded, wherein the connection point between the feed circuit and the radiator (feeding point) is located at the center of the radiator. 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 feed circuit, and the middle position of the other side of the slot 72 is connected to the negative pole of the feed 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) shows the current, electric field, and magnetic flux distribution of antenna 70. As shown in Figure 5(b), on the conductor surrounding slot 72 (such as the floor and / or radiator 60), the current is distributed around slot 72 and in opposite directions on either side of the center of slot 72. The electric field is distributed in the same direction on either side of center 71, and the magnetic flux is distributed in the same direction on either side of center 71. The magnetic flux at the feed circuit is distributed in opposite directions (not shown). Due to the opposite distribution of magnetic flux at the feed circuit, the feeding shown in Figure 5(a) can be referred to as slot DM feeding. Due to the opposite current distribution (e.g., symmetrical distribution) on either side of the connection between the feed circuit and the radiator, or due to the opposite current distribution (e.g., symmetrical distribution) around slot 71, the antenna pattern shown in Figure 5(b) can be referred to as a slot DM mode (or simply DM mode, for example, for a slot antenna, the DM mode refers to the slot DM mode). The electric field, current, and magnetic flux distribution shown in Figure 5(b) can be referred to as the electric field, current, and magnetic flux of the slot DM mode.

[0232] The current is weak in the middle of the antenna 70 and strong at both ends of the antenna 70. The electric field is strong in the middle of the antenna 70 (the highest point of the electric field is near the middle of the antenna 60) and weak at both ends of the slot antenna 70, as shown in Figure 5(b).

[0233] It should be understood that the radiator of the antenna can be understood as a metal structure that generates radiation (for example, including a part of the floor), which can include an opening, as shown in FIG4 , or can be a complete ring, as shown in FIG5 , and can be adjusted according to actual design or production needs. For example, for the slot CM mode, a complete ring radiator can be used as shown in FIG5 , and two feeding points are set in 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 an effect similar to the antenna structure shown in FIG4 can also be obtained. Correspondingly, for the slot DM mode, a radiator including an opening can be used as shown in FIG4 , and a symmetrical feeding method is adopted at both ends of the opening position. For example, the same feed source signal is fed into the two ends of the radiator on both sides of the opening, and an effect similar to the antenna structure shown in FIG5 can also be obtained.

[0234] 6. Slot CM-DM mode.

[0235] FIG4 and FIG5 above respectively show that the slot structure generates a slot CM mode and a slot DM mode respectively using different feeding methods.

[0236] When the antenna uses asymmetric feeding (the feeding point deviates from the center, including side feeding or offset feeding), or the slot opening on one side is asymmetric (the opening deviates from the center of that side), the antenna can simultaneously produce a first resonance and a second resonance, corresponding to the slot CM mode and slot DM mode, respectively. For example, the first resonance corresponds to the slot CM mode, with the current, electric field, and magnetic flux distributions shown in Figure 4(b). The second resonance corresponds to the slot DM mode, with the current, electric field, and magnetic flux distributions shown in Figure 5(b).

[0237] Since the above antenna structures can both generate two operating modes (with symmetrical or antisymmetrical electric field distribution) in which the electric fields are orthogonal (the product of the electric fields in the far field is zero (integrated orthogonal)), the isolation between the two operating 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 operate in two working modes (electric fields are symmetrically distributed or antisymmetrically distributed) in which the electric fields are orthogonal (the product of the electric fields 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 fed with signals by a first feed circuit and a second feed circuit, respectively. The first feed circuit and the second feed circuit are different. In an electronic device, the first feed circuit and the second feed circuit can be different radio frequency channels in a radio frequency integrated circuit (RFIC).

[0240] FIG6 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0241] As shown in FIG. 6 , the electronic device 10 may include an antenna 100 .

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

[0243] Antenna 100 may also include a feed circuit and an electronic component. Radiator 105 may include a first connection point and a second connection point. The first connection point is located between first position 101 and the slot, and the second connection point is located between second position 102 and the slot. The feed circuit is coupled to the first connection point. A first end of the electronic component is coupled to the second connection point, and a second end is coupled to the ground.

[0244] When an electrical signal is fed into the feed circuit, antenna 100 can operate in the aforementioned slot CM-DM mode. Electronic components can be used to bring the resonances generated by the slot CM mode and the slot DM mode closer together, forming a common resonant frequency band, thereby expanding the operating bandwidth of antenna 100. In one embodiment, the electronic components can shift the frequency of the resonance generated by the slot DM toward a lower frequency.

[0245] Figures 7 and 8 show simulation results for antenna 200 in electronic device 10 shown in Figure 6. Figure 7 shows S-parameter simulation results for antenna 100 in electronic device 10 shown in Figure 6. Figure 8 shows system efficiency and radiation efficiency simulation results for antenna 100 in electronic device 10 shown in Figure 6.

[0246] As shown in FIG. 7 , the antenna 100 may resonate at around 1.7 GHz and around 2 GHz, wherein the resonance at around 1.7 GHz may correspond to the slot CM mode, and the resonance at around 2 GHz may correspond to the slot DM mode.

[0247] As shown in Figure 8, when antenna 100 operates in slot CM mode, multiple current modes are generated on the floor, while the slot DM mode is primarily radiated by the radiator. Therefore, the radiation efficiency of the slot CM mode is higher than that of the slot DM mode. When the resonances generated by the slot CM and slot DM modes are used to expand the operating bandwidth of antenna 100, the lower radiation efficiency of the slot DM mode causes a pit near the resonance generated by the slot DM mode, resulting in a narrow system efficiency bandwidth (taking system efficiency > -2dB as an example) of only 400MHz.

[0248] Embodiments of the present application provide an antenna structure and electronic device thereof. This antenna structure utilizes a conductive portion of a frame as a radiator. An electrical signal is fed to the radiator through indirect coupling, and the feeder and radiator are used to generate a first resonance and a second resonance. These two resonances can be combined to form a resonant frequency band, thereby expanding the bandwidth. Furthermore, within the resonant frequency band, the antenna structure exhibits good radiation efficiency and system efficiency.

[0249] FIG9 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0250] As shown in FIG. 9 , 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 region 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 this 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 using 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 to the floor 300 to achieve grounding of the radiator. The frame 11 at the first position 201 and the second position 202 can be directly electrically connected to the floor 300 via a spring, or can be electrically connected to the floor 300 via an inductor, or can be electrically connected to the floor 300 via a structural member of the middle frame (e.g., a connecting rod). Electrical connection to the floor 300 via a structural member of the middle frame can be understood as at least a portion of the frame 11 being integral with the floor 300.

[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 rod). The width of the grounding member connected to the frame 11 is greater than or equal to 1mm and less than or equal to 10mm.

[0256] In one embodiment, the frame 11 defines a first gap between the first position 201 and the second position 202 to achieve an opening / open end on the radiator. Either side of the first gap may be spaced from the floor 300 or may be coupled to the floor 300 via a capacitor.

[0257] Antenna 200 includes a radiator 210 and a feeder 221. The radiator 210 and the feeder 221 are spaced apart and at least partially overlap along a first direction perpendicular to the extension direction of the radiator 210 (e.g., the y-direction). In one embodiment, the extension direction of the radiator 210 is the same 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 and second ends of the radiator 210 are grounded, with the first and second ends corresponding to the first and second positions 201, 202 of the frame 11, respectively. The first and second ends of the feeder 221 are open.

[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 the 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 connecting parts (for example, springs, metal ribs, etc.) between the floor 300 and the floor 300, without having electronic components (for example, capacitors, inductors, switches, etc.). 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 grounded end can be coupled to the floor 300 via electronic components. However, coupling with the floor 300 via electronic components does not alter the original electric field or current characteristics. At the open end, coupling with the floor 300 via the electronic components maintains a strong electric field near the open end, correspondingly resulting in weaker current flow in that area. At the grounded end, coupling with the floor 300 via the electronic components maintains a strong current flow near the grounded end, correspondingly resulting in a weaker electric field in that area.

[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 on the first side of the frame, and the extension direction of the radiator 210 is the extension direction of the first side (e.g., the x-direction). Alternatively, the first position 201 and the second position 202 are respectively located on 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 (e.g., the x-direction) and the extension direction of the second side (e.g., the y-direction). The radiator 210 and the feeding element 221 at least partially overlap in a direction perpendicular to any of the extension directions of the radiator 210.

[0262] At the same time, 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 spacing setting can be understood accordingly. The radiator 210 and the feeder 221 are coupled through the gap.

[0263] Antenna 200 also includes a feed circuit 231. Feed element 221 includes a feed point 211. Feed circuit 231 is coupled to feed point 211. In one embodiment, the distance between feed point 211 and the end of the first end of feed element 221 is less than one-third of the length of feed element 221. It should be understood that by adjusting the position of feed point 211, the radiation characteristics of antenna 200, such as the resonant 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 in the first operating frequency band.

[0265] The first operating frequency band of the electronic device 10 includes a frequency range, such as a low band (LB) (698MHz-960MHz), a middle band (MB) (1710MHz-2170MHz), or a high band (HB) (2300MHz-2690MHz) in a cellular network. For example, if the operating frequency band of the electronic device 10 is LB (698MHz-960MHz), 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.

[0266] It should be understood that the technical solution provided in the embodiment of the present application is that 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 feeding element 221. In the electronic device 10, compared with the radiator 210 (the conductive part in the frame 11 serves as the radiator 210), the radiation environment of the feeding element 221 is poor (for example, the clearance is poor and it is close to the adjacent metal parts). However, the feeding element 221 can generate a new current path for the radiator 210, thereby generating a new resonance (for example, the second resonance) to expand the working bandwidth of the antenna 200.

[0267] At the same time, since the first and second ends of the radiator 210 are grounded, the areas near the first and second ends of the radiator 210 have a relatively strong current and a relatively weak electric field. However, since the first and second ends of the feeder 221 are open ends, the areas near the first and second ends of the feeder 221 have a relatively weak current and a relatively strong electric field. The proximity of the areas of the radiator 210 with a relatively weak electric field (and relatively strong magnetic field) to the areas of the feeder 221 with a relatively strong electric field (and relatively strong magnetic field) can make the first resonance and the second resonance more balanced, and no radiation efficiency pit will be generated in the first operating frequency band jointly supported by the first and second resonances, 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 currents on the radiators 210 on both sides of the first slot are distributed in the same direction (or, in other words, there is no current reversal point on the radiators). 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 currents on the radiators 210 on both sides of the first slot are distributed in the same direction (or, in other words, there is no current reversal point on the radiators).

[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 along the path of the current flow, and there is no current reversal point. For the sake of simplicity, 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 high radiation efficiency and system efficiency, the antenna has good radiation efficiency and system efficiency within the operating 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 may be generated by a line DM mode. The radiator 210 generates a unidirectional current through coupling with the unidirectional current on the feeding element 221, thereby generating a second resonance.

[0274] In one embodiment, the width of the first slit 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 slits provided on the frame in the embodiment of the present application can be within the above range, and for the sake of brevity, they will not be detailed one by one.

[0275] In one embodiment, the ratio of the length of the overlapping portion of 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 25%. In one embodiment, the ratio of the length of the overlapping portion of 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%.

[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 projected length to the length of the feed element 221 (or the ratio of the projected length 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 (e.g., the x-direction) and the extension direction of the second side (e.g., the y-direction). 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 (e.g., the x-direction) and the length of the overlapping portion in the extension direction of the second side (e.g., the y-direction).

[0278] In one embodiment, the lengths of the radiators on both sides of the first slot are approximately 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 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 first slit on the feeder 221 is in the center area of ​​the feeder 221.

[0281] It should be understood that when the feed 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, thereby enabling the antenna 200 to have better radiation characteristics (e.g., bandwidth, radiation efficiency, etc.) at the first resonance and the second resonance. The alignment of the feed 221 with the radiator 210 can be understood as the first radiator 210 being symmetrical along the virtual axis of the feed 221, and the length of the feed 221 on both sides of the virtual axis being the same.

[0282] At the same time, the radiator 210 has a weaker current and a stronger electric field near the first slot. The feeder 221 has a weaker electric field and a stronger current near the center. The proximity of the radiator 210's area with a stronger electric field (stronger magnetic field) (the first slot) to the feeder 221's area with a weaker electric field (stronger magnetic field) (the midpoint) allows for a more balanced first and second resonances.

[0283] In one embodiment, feed element 221 includes a connection point 241. Antenna 200 may further include an electronic component 242. A first end of electronic component 242 is coupled to connection point 241, and a second end of electronic component 242 is coupled to floor 300. In one embodiment, the distance between connection point 241 and the second end of feed element 221 is less than one-third of the length of feed element 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, thereby enabling the antenna 200 to have better radiation characteristics (e.g., 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 length of the feed element 221 on both sides of the virtual axis is 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 either side of the first slot is greater than or equal to 0.9 and less than or equal to 1.1. In one embodiment, the coupling method between both ends of the radiator 210 and the floor 300 is the same (for example, the frame 11 is coupled to the floor 300 via inductance or via connecting bars at both the first position 201 and the second position 202). In one embodiment, the projection of the first slot 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 increased 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 operating 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. Because the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy the following relationship: L1 × 50% ≤ L2 ≤ L1. In one embodiment, the physical length L1 of the radiator 210 can be less than or equal to the physical length L2 of the feeder 221, satisfying the following relationship: L1 ≤ L2 ≤ L1 × 150%.

[0292] In one embodiment, the physical length L1 of the radiator 210 can 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 as to have good coupling characteristics 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. FIG10 is a partial cross-sectional view of the electronic device along a first direction. For 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 can be disposed on a surface of the bracket 140, and at least a portion of the bracket 140 can be disposed between the PCB 17 and the back cover 21 to support the feeder 221. The metal layer in the PCB 17 can serve as the floor 300 in the embodiment of the present application, and the floor can also be the middle frame of the electronic device or other metal layer.

[0297] In one embodiment, the feeder 221 on the bracket 140 can 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 can be disposed between the bracket 140 and the PCB 17. To avoid mutual interference between the electronic components and the feeder 221, the electronic components can be disposed within a metal shielding cover. In one embodiment, the feeder 221 on the bracket 140 can 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 outer edge. In one embodiment, the feeder 221 on the bracket 140 can be located above a hollow area (e.g., a non-conductive portion) of the PCB 17 or above 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 simplicity of discussion, in the technical solutions shown in Figures 9 and 10, the conductive part of the frame 11 is used as the radiator 210, and the feeder 221 is a non-frame structure (for example, provided on a bracket, PCB or back cover). 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, provided on a bracket, PCB or back cover).

[0301] It should be understood that, for the sake of simplicity, 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 impose any restrictions on 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 strip-shaped. "Strip-shaped" can be understood as having a length that is much greater than its width, for example, a length greater than three times or six times its width. In one embodiment, the smallest of the three dimensions of the feeder 221 is its thickness. For example, when the feeder 221 can be mounted on a surface of the bracket 140, the dimension perpendicular to the bracket 140 surface is its thickness. The dimensions of the feeder 221 other than its thickness can be understood as 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] Figures 11 and 12 are simulation results of antenna 200 in electronic device 10 shown in Figure 9. Figure 11 is an S-parameter simulation result of antenna 200 in electronic device 10 shown in Figure 9. Figure 12 is a simulation result of system efficiency and radiation efficiency of antenna 200 in electronic device 10 shown in Figure 9.

[0306] It should be understood that in the above simulation results, only the following parameters are used 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] As shown in Figure 11, antenna 200 can resonate at frequencies near 1.87 GHz, 2.23 GHz, and 3.19 GHz, but the resonance at 3.19 GHz is less excited. The resonance at 1.87 GHz corresponds to the first resonance in the aforementioned embodiment, while the resonance at 2.23 GHz corresponds to the second resonance in the aforementioned embodiment. The resonance at 3.19 GHz corresponds 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 illustration. 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] As shown in Figure 12, both the first and second resonances can be generated by the slot CM mode. Because the slot CM mode has high radiation efficiency and system efficiency, the antenna does not produce a dip within the operating frequency band of the first and second resonances, resulting in good radiation efficiency and system efficiency. For example, with a system efficiency > -2dB, the system efficiency bandwidth of antenna 200 is approximately 530MHz.

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

[0311] As shown in Figure 13, the currents on the radiators on both sides of the first slot flow in the same direction, as do the currents on the feeder. The current distribution on the radiators conforms to the current characteristics of the slot CM mode, while the current distribution on the feeder conforms to the current characteristics of the line DM mode.

[0312] As shown in Figure 14, the currents on the radiators on both sides of the first slot flow in the same direction, as do the currents on the feeder. The current distribution on the radiators conforms to the current characteristics of the slot CM mode, while the current distribution on the feeder conforms to the current characteristics of the line DM mode.

[0313] As shown in Figure 15, the currents on the radiators on either side of the first slot flow in opposite directions, while the currents on the feeders on either side of the center flow in opposite directions. The current distribution on the radiators conforms to the current characteristics of the slot DM mode, while the current distribution on the feeders conforms to the current characteristics of the line CM mode.

[0314] As shown in FIG16 , the electric field generated by the antenna is in opposite directions on both sides of the first slot (pointing in the positive and negative directions of the z-axis, respectively), which is consistent with the electric field characteristics of the slot CM mode.

[0315] As shown in FIG17 , the electric field generated by the antenna is in opposite directions on both sides of the first slot (pointing in the positive and negative directions of the z-axis, respectively), which is consistent with the electric field characteristics of the slot CM mode.

[0316] As shown in FIG18 , the electric field generated by the antenna is in the same direction on both sides of the first slot (both pointing in the positive direction of the z-axis), which is consistent with the electric field characteristics of the slot DM mode.

[0317] FIG19 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0318] As shown in Figure 19, feed element 221 includes a first connection point 241 and a second connection point 243, with feed point 211 located between connection points 241 and 243. Antenna 200 may also include electronic components 242 and 244. A first end of electronic component 242 is coupled to connection point 241, and a second end of electronic component 242 is coupled to floor 300. A first end of electronic component 244 is coupled to connection point 243, and a second end of electronic component 244 is coupled to floor 300.

[0319] In one embodiment, connection point 241 is located at the second end of feeder 221, and connection point 243 is located at the first end of feeder 221. While the electrical length of feeder 221 remains unchanged, electronic components 242 and 244 can be used to reduce the physical length of feeder 221 to achieve miniaturization. In one embodiment, the distance between connection point 241 and the end of the second end of feeder 221 is less than or equal to 3 mm. In one embodiment, the distance between connection point 243 and the end of the first end of 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 the following relationship: L1×70%≤L2≤L1×90%.

[0321] It should be understood that the difference between the antenna 200 shown in FIG. 19 and the antenna 200 shown in FIG. 9 includes the arrangement of the electronic components 244 and 242 .

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

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

[0324] For the sake of simplicity, parts of the antenna 200 shown in FIG19 that are similar to those of the antenna 200 shown in FIG9 are not described one by one. For example, the 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] Figures 20 and 21 show simulation results for antenna 200 in the electronic device 10 shown in Figure 19 under different conditions. Figure 20 shows S-parameter simulation results for antenna 200 in the electronic device 10 shown in Figure 19 under different conditions. Figure 21 shows system efficiency and radiation efficiency simulation results for antenna 200 in the electronic device 10 shown in Figure 19 under different conditions.

[0326] It should be understood that in the above simulation results, the radiators have the same size and the feeder has a width of 1 mm. 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: The antenna shown in FIG. 9 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 of the electronic component 242 is 1 pF.

[0328] Case 2: For the antenna shown in FIG19 , the distance between the feeder and the radiator is 1.2 mm, the length of the feeder is 15 mm, the capacitance of the electronic component 242 is 1.5 pF, and the capacitance of the electronic component 244 is 0.7 pF.

[0329] Case 3: For the antenna shown in FIG19 , 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] As shown in Figure 20, the antennas in Cases 1, 2, and 3 can all resonate near 1.9 GHz (first resonance) and 2.2 GHz. However, as the length of the feeder decreases, the operating bandwidth of the antenna gradually decreases, with S11 < -4 dB as the limit.

[0331] As shown in Figure 21, the first and second resonances in Cases 1, 2, and 3 can all be generated by the slot CM mode. The antenna does not produce a notch within the operating frequency band formed by the first and second resonances, resulting in good radiation efficiency and system efficiency. However, as the length of the feeder decreases, the system efficiency bandwidth of antenna 200 gradually decreases, taking the system efficiency as >-2dB as an example.

[0332] Figures 22 and 23 show simulation results for the antenna with the feeder positioned at different locations in the electronic device 10 shown in Figure 19. Figure 20 shows the S-parameter simulation results for the antenna with the feeder positioned at different locations in the electronic device 10 shown in Figure 19. Figure 21 shows the system efficiency and radiation efficiency simulation results for the antenna with the feeder positioned at different locations in the electronic device 10 shown in Figure 19.

[0333] It should be understood that in the above embodiments, only the example of the feeder being disposed on the bracket is used for illustration. The simulation results shown in Figures 22 and 23 illustrate the simulation results of the antenna when the feeder is disposed on the bracket or on the PCB, respectively. Compared to the case where the feeder is disposed on the surface of the bracket, when it is disposed on the PCB (using a PCB thickness of 0.7 mm as an example), a microstrip line structure is formed. By adjusting the distance from the radiator, electronic components 242 and 244, etc., the resonant point frequency of the first resonance and the resonant point frequency of the second resonance can be adjusted.

[0334] As shown in FIG22 , when the feeding element is set 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 Figure 23, both the first and second resonances can be generated by the slot CM mode. When the feeder is placed on a bracket or PCB, the antenna does not produce a pit within the operating frequency band formed by the first and second resonances, achieving good radiation efficiency and system efficiency. However, when the feeder is placed on a PCB to form a microstrip line structure, the antenna's radiation efficiency decreases slightly.

[0336] FIG24 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

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

[0338] It should be understood that the difference between the antenna 200 shown in FIG24 and the antenna 200 shown in FIG19 includes switches 251, 252, and electronic components 245. The switches 251 and 252 in the antenna 200 shown in FIG24 can switch between different electronic components 242 and 245, thereby adjusting the resonant point frequency of the first resonance and the resonant point frequency of the second resonance.

[0339] It should be understood that FIG24 can also be designed based on the overall structure of FIG9 , with the only difference being the addition of a switch 252 coupled to both sides of the first gap, and the addition of an electronic component and a switch 251 coupled to the feeder.

[0340] For the sake of simplicity, parts of the antenna 200 shown in FIG24 that are similar to those of the antenna 200 shown in FIG9 or FIG19 are not described one by one. For example, the 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] Figures 25 and 26 are simulation results of antenna 200 in electronic device 10 shown in Figure 24. Figure 25 is an S-parameter simulation result of antenna 200 in electronic device 10 shown in Figure 24. Figure 26 is a simulation result of system efficiency and radiation efficiency of antenna 200 in electronic device 10 shown in Figure 24.

[0342] As shown in FIG. 25 , in the antenna 200 shown in FIG. 24 , switches 251 and 252 can switch between different electronic components 242 and 245 , thereby adjusting the resonant point frequencies of the first resonance and the second resonance.

[0343] It should be understood that different electronic components 242 and electronic components 245 can be switched according to different communication requirements of the electronic device 10. For the sake of simplicity, the simulation results shown in Figures 25 and 26 only show simulation results for four different switching states (a switching state can be understood as switching different electronic components 242 and / or electronic components 245).

[0344] As shown in FIG26 , at different frequencies of the first resonance point and the second resonance point, 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] FIG27 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

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

[0347] In one embodiment, the distance between the feeding point 211 and the first end of the feeding element 221 is different from the distance between the feeding point 211 and the second end of the feeding element 221 , and the feeding element 221 may 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-feed 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-handed antenna, which may, for example, be an antenna conforming to a composite right and left hand (CRLH) transmission line structure.

[0350] It should be understood that the difference between the antenna 200 shown in FIG. 27 and the antenna 200 shown in FIG. 19 includes that the second end of the feeding element 221 is a ground end.

[0351] In the antenna 200 shown in FIG19 , the first end and the second end of the feeder 221 are open ends, and the feeder 221 forms a radiator structure that conforms to a dipole antenna. In the antenna 200 shown in FIG27 , the first end of the feeder 221 is an open end and the second end is a ground end, and the feeder 221 can form a structure similar to a monopole or a left-handed antenna. When an electrical signal is fed into the feeding point, a current in the same direction can also be generated on the radiator 210, similar to the current on the feeder 221 shown in FIG19 , which can also excite the radiator 210 to resonate. Moreover, 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 being 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 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 the length of the radiator 210.

[0353] It should be understood that the area near the first slot of the radiator 210 has a weaker current and a stronger electric field. The area near the ground end of the feeder 221 has a weaker electric field and a stronger current. The proximity of the area with a stronger electric field (stronger magnetic field) on the radiator 210 (the first slot) to the area with a weaker electric field (stronger magnetic field) on the feeder 221 (the ground end) can achieve a more balanced first and second resonances.

[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 feeding element 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 feeding element 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. Because the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy the following relationship: 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 the following relationship: L1×35%≤L2≤L1×75%.

[0359] For the sake of simplicity, parts of the antenna 200 shown in FIG27 that are similar to those of the antenna 200 shown in FIG9 are not described one by one. For example, the similar parts include: the radiator 210 and the feeding element 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 slot; the shape of the feeding element 221, for example, a strip shape; the position where the feeding element 221 is set, etc.

[0360] It should be understood that the feeding elements shown in the antenna 200 shown in the above embodiments (for example, Figures 9, 19, and 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, the antenna 200 shown in Figure 27 can also adopt the switch structure shown in Figure 24. 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] Figures 28 and 29 are simulation results of antenna 200 in electronic device 10 shown in Figure 27. Figure 28 is an S-parameter simulation result of antenna 200 in electronic device 10 shown in Figure 27. Figure 29 is a simulation result of system efficiency and radiation efficiency of antenna 200 in electronic device 10 shown in Figure 27.

[0363] As shown in Figure 28, compared to the antenna shown in Figure 19, the antenna shown in Figure 27 can also resonate near 1.9 GHz and 2.2 GHz (because the two resonance points have close frequencies, they are combined into one resonance). However, because the first end of the feed element in the antenna shown in Figure 27 is open and the second end is grounded, the antenna structure is less symmetrical. Therefore, the antenna's operating bandwidth is narrow, and the excitation of the slot DM mode near 3.1 GHz is enhanced.

[0364] As shown in FIG29 , the antenna does not generate pits within the working frequency band formed by the first resonance and the second resonance, and has good radiation efficiency and system efficiency.

[0365] FIG30 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0366] As shown in FIG30 , the first end and the second end of the power feeder 221 are open. The power 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 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, forming an asymmetric T-shaped structure. In one embodiment, the different lengths of the feeders 221 on both sides of the grounding point 212 can be understood as the difference in length of the feeders 221 on both sides of the grounding point 212 being greater than or equal to 5 mm.

[0369] It should be understood that the difference between the antenna 200 shown in FIG. 30 and the antenna 200 shown in FIG. 19 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 the asymmetric T-shaped feeding element in FIG. 30 can also be applied to the antenna 200 shown in the above embodiments (eg, FIG. 9 , FIG. 19 , FIG. 24 , and FIG. 27 ).

[0371] For the sake of simplicity, the parts of the antenna 200 shown in Figure 30 that are similar to the antenna 200 shown in Figure 9 are not repeated one by one. For example, the 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] In the antenna 200 shown in Figure 30, the feed element 221 can have both a linear DM mode and a linear CM mode. When the feed 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 operating bandwidth of the antenna 200.

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

[0374] It should be understood that the larger or smaller the ratio of the lengths of the feeding element 221 on both sides of the grounding point 212 (approximately offset from the center of the feeding element 221 ), the greater 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 currents on the radiators 210 on both sides of the first slot are distributed in the same direction (or, in other words, there is no current reversal point on the radiators). 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 currents on the radiators 210 on both sides of the first slot are distributed in the same direction (or, in other words, there is no current reversal point on the radiators).

[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 opposite currents are distributed on the radiators 210 on both sides of the first slot (or, in other words, the radiators have current reversal points). At the resonance point of the fourth resonance, the currents on the radiators 210 on both sides of the first slot are reversed, and opposite currents are distributed on the radiators 210 on both sides of the first slot (or, in other words, the radiators have current reversal points).

[0377] In one embodiment, at the resonance point of the first resonance, the currents on the feed element 221 are in the same direction, and at the resonance point of the second resonance, the currents on the feed element 221 are in the same direction. Furthermore, at the resonance point of the first resonance, the currents on the feed element 221 on both sides of the grounding point 212 are distributed in the same direction (in other words, there is no current reversal point on the feed element 221).

[0378] Figures 31 and 32 show simulation results for antenna 200 in electronic device 10 shown in Figure 30. Figure 31 shows the S-parameter simulation results for antenna 200 in electronic device 10 shown in Figure 9. Figure 32 shows the system efficiency and radiation efficiency simulation results for antenna 200 in electronic device 10 shown in Figure 30.

[0379] As shown in FIG31 , antenna 200 can resonate at approximately 2.1 GHz, 2.4 GHz, 3.4 GHz, and 3.5 GHz. The resonance at approximately 2.1 GHz corresponds to the first resonance in the aforementioned embodiment, the resonance at approximately 2.4 GHz corresponds to the second resonance in the aforementioned embodiment, the resonance at approximately 3.4 GHz corresponds to the third resonance in the aforementioned embodiment, and the resonance at approximately 3.5 GHz corresponds to the fourth resonance in the aforementioned embodiment.

[0380] As shown in FIG32 , the first and second resonances can both be generated by the slot CM mode, and the third and fourth resonances can both be generated by the slot DM mode. Since the slot CM mode has higher radiation efficiency and system efficiency than the slot DM mode, the radiation efficiency and system efficiency of the antenna in the operating frequency band formed by the first and second resonances are better than those in the operating frequency band formed by the third and fourth resonances.

[0381] Figures 33 to 40 are schematic diagrams of the current and electric field distribution of the antenna 200 in the electronic device 10 shown in Figure 30. Figure 33 is a schematic diagram of the current distribution of the antenna shown in Figure 30 at the resonance point of the first resonance (2.12 GHz). Figure 34 is a schematic diagram of the current distribution of the antenna shown in Figure 30 at the resonance point of the second resonance (2.45 GHz). Figure 35 is a schematic diagram of the current distribution of the antenna shown in Figure 30 at the resonance point of the third resonance (3.43 GHz). Figure 36 is a schematic diagram of the current distribution of the antenna shown in Figure 30 at the resonance point of the fourth resonance (3.54 GHz). Figure 37 is a schematic diagram of the electric field distribution of the antenna shown in Figure 30 at the resonance point of the first resonance (2.12 GHz). Figure 38 is a schematic diagram of the electric field distribution of the antenna shown in Figure 30 at the resonance point of the second resonance (2.45 GHz). Figure 39 is a schematic diagram of the electric field distribution of the antenna shown in Figure 30 at the resonance point of the third resonance (3.43 GHz). FIG40 is a schematic diagram of the electric field distribution of the antenna shown in FIG30 at the fourth resonance point (3.54 GHz).

[0382] As shown in Figure 33, the currents on the radiators on both sides of the first slot flow in the same direction, as do the currents on the feeders on both sides of the ground point. 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.

[0383] As shown in Figure 34, the currents on the radiators on both sides of the first slot flow in the same direction, as do the currents on the feeders on both sides of the ground point. 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.

[0384] As shown in Figure 35, the currents on the radiator on either side of the first slot flow in opposite directions, while the currents on the feeder on either side of the ground point flow in opposite directions. The current distribution on the radiator conforms to the current characteristics of the slot DM mode, while the current distribution on the feeder conforms to the current characteristics of the line CM mode.

[0385] As shown in Figure 36, the currents on the radiator on either side of the first slot flow in opposite directions, while the currents on the feeder on either side of the ground point flow in opposite directions. The current distribution on the radiator conforms to the current characteristics of the slot DM mode, while the current distribution on the feeder conforms to the current characteristics of the line CM mode.

[0386] As shown in FIG37 , the electric field generated by the antenna is in opposite directions on both sides of the first slot (pointing in the positive and negative directions of the z-axis, respectively), which is consistent with the electric field characteristics of the slot CM mode.

[0387] As shown in FIG38 , the electric field generated by the antenna is in opposite directions on both sides of the first slot (pointing in the positive and negative directions of the z-axis, respectively), which is consistent with the electric field characteristics of the slot CM mode.

[0388] As shown in FIG39 , the electric field generated by the antenna is in the same direction on both sides of the first slot (both pointing in the positive direction of the z-axis), which is consistent with the electric field characteristics of the slot DM mode.

[0389] As shown in FIG40 , the electric field generated by the antenna is in the same direction on both sides of the first slot (both pointing in the positive direction of the z-axis), which conforms to the electric field characteristics of the slot DM mode.

[0390] FIG41 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0391] As shown in FIG41 , the frame 11 includes a first position 201, a second position 202, and a third position 203, which are sequentially arranged. 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. The frame 11 defines a first gap between the first position 201 and the second position 202. The frame 11 defines 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 the difference between the antenna 200 shown in Figure 41 and the antenna 200 shown in Figure 19 is the parasitic stub. The radiator 210 (the conductive portion between the first position 201 and the second position 202) can form a slot antenna, generating the first and second resonances described above by the slot CM mode. The parasitic stub and part of the radiator 210 (the conductive portion between the first slot and the third position 203 (the second slot)) can form a radiator structure consistent with a linear antenna, generating a fifth resonance by the linear DM mode. In one embodiment, the fifth resonance can be used to expand the operating bandwidth of the antenna 200. The first, second, and fifth resonances can jointly support an operating frequency band of the electronic device 10. In one embodiment, the resonant point frequency of the fifth resonance can be greater than the resonant point frequency of the first resonance and the resonant point frequency of the second resonance. In one embodiment, the resonant point frequency of the fifth resonance can be less than the resonant point frequency of the first resonance and the resonant 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 (within 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 (within 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 understood that the radiator 210 and part of the feeding element of the antenna 200 in Figure 41 can also be replaced by the antenna 200 shown in Figures 9, 19, 24, 27, and 30. The only difference is that the conductor between the second position and the third position serves as a parasitic branch.

[0397] For the sake of simplicity, parts of the antenna 200 shown in FIG41 that are similar to those of the antenna 200 shown in FIG9 , FIG19 , FIG24 , FIG27 , and FIG30 will not be described one by one. For example, the 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 in a central region of the conductive portion between the first gap and the third position 203 .

[0399] Figures 42 and 43 are simulation results of antenna 200 in electronic device 10 shown in Figure 41. Figure 42 is an S-parameter simulation result of antenna 200 in electronic device 10 shown in Figure 41. Figure 43 is a simulation result of system efficiency and radiation efficiency of antenna 200 in electronic device 10 shown in Figure 41.

[0400] As shown in FIG42 , from 1.6 GHz to 2.4 GHz, compared with the antennas shown in FIG9 , FIG19 , FIG24 , FIG27 , and FIG30 , the antenna shown in FIG41 can additionally generate a fifth resonance (near 2.24 GHz), with S11 being less than -4 dB as the limit, and the operating bandwidth is greater than the operating bandwidth of the antenna shown in FIG19 .

[0401] As shown in FIG43 , no efficiency pit occurs near the fifth resonance where the antenna can additionally generate. The antenna has good radiation efficiency and system efficiency within the operating frequency band formed by the first resonance, the second resonance, and the fifth resonance.

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

[0403] As shown in Figures 44 and 45, 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] As shown in FIG46 , 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] FIG47 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0406] It should be understood that in the antenna 200 shown in FIG41 , the first and second ends of the feed element 221 are open, forming a dipole antenna. In contrast, in the antenna 200 shown in FIG47 , the first end of the feed element 221 is open and the second end is grounded, forming a structure similar to a monopole or a left-handed antenna. This feed element 221 can also excite the antenna 200 to generate the first, second, and fifth resonances described above.

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

[0408] It should be understood that because the first end of the feed element is open and the second end is grounded, the antenna structure is less symmetrical. Therefore, the excitation of the third resonance generated by the slot DM mode (the conductor portion between the first and second positions forms a radiator structure consistent with the slot antenna) is enhanced. Electronic component 246 can be used to adjust the resonant point frequency of the third resonance so that the first, second, and third resonances jointly support an operating frequency band of electronic device 10.

[0409] At the same time, the technical solution shown in Figure 47 can also be applied to the antenna 200 shown in Figures 9, 19, 24, 27, 30, and 41 above. For the sake of brevity, they will not be described one by one.

[0410] For the sake of simplicity, parts of the antenna 200 shown in FIG47 that are similar to those of the antenna 200 shown in FIG9 , FIG19 , FIG24 , FIG27 , FIG30 , and FIG41 will not be described one by one. For example, the 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, in the technical solutions shown in Figures 41 and 47, the conductive part between the first slot and the third position 203 (second slot) is used to form a radiator structure that conforms to a linear antenna, and the fifth resonance is generated by the linear DM mode. This technical solution can be applied to any of the embodiments shown in Figures 9 to 40 above.

[0412] FIG48 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0413] As shown in Figure 48, the frame 11 is coupled to the floor 300 at a first position 201 and has a first gap at a second position 202. The first end of the radiator 210 is grounded, and the second end is open. The first and second ends of the radiator 210 correspond to the first and second positions 201 and 202 of the frame 11, respectively. The first and second ends of the feed element 221 are open.

[0414] In one embodiment, a ratio of a length of an overlapping portion of a projection of the feeding element 221 on the frame 11 and the radiator 210 to a 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 feeder 221 and the midpoint 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 first slit on the feeder 221 is in the center area of ​​the feeder 221.

[0417] The radiator 210 has a weaker current and a stronger electric field near the first slot. The feeder 221 has a weaker electric field and a stronger current near the center. The proximity of the radiator 210's strong electric field (strong magnetic field) region (the first slot) to the feeder 221's weaker electric field (strong magnetic field) region (the midpoint) allows for a more balanced first and second resonances.

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

[0419] In the antenna 200 shown in the above embodiment, the first and second ends of the radiator 210 are grounded, and the radiator 210 can form a radiator structure consistent with a slot antenna. In the antenna 200 shown in Figure 48, the first end of the radiator 210 is grounded and the second end is open. 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 also be stimulated to produce a first resonance and a second resonance. In addition, because the first end of the radiator 210 is grounded and the second end is open, the size of the radiator 210 can be further reduced (for example, it can be regarded as reduced from a half-wavelength structure to a quarter-wavelength structure), 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 the electrical length of the feed 221. Correspondingly, the physical length of the radiator 210 is approximately half the physical length of the feed 221. Because the electronic components coupled to the feed 221 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L2 of the feed 221 satisfy the following relationship: L1 ≤ L2 ≤ L1 × 200%. In other words, the physical length L2 of the feed 221 is between 1.4 and 2.6 times the physical length L1 of the radiator 210 (inclusive). In one embodiment, the physical length L1 of the radiator 210 and the physical length L2 of the feed 221 satisfy the following relationship: L1 × 200% ≤ L2 ≤ L1 × 300%.

[0422] For the sake of simplicity, parts of the antenna 200 shown in FIG48 that are similar to those of 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] Figure 49 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0424] As shown in Figure 49, the frame 11 is coupled to the floor 300 at a first position 201 and a second position 202. The first and second ends of the radiator 210 are grounded, forming a radiator structure consistent with a slot antenna. A first gap is defined between the first and second positions 201, 202. In one embodiment, the first gap is located in the center region between the first and second positions 201, 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 perpendicular to the extension direction of the first radiator 210 (e.g., the y-direction). In one embodiment, the extension direction of the radiator 210 is the same as the extension direction of the feeder 221. The first and second ends of the first feeder 221 are grounded. The first and second ends of the second feeder 222 are open.

[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 one-to-one correspondence between the radiator and the feeding element is used as an example for explanation. In the embodiment shown in Figure 49, the radiator can be excited by two feeding elements to produce 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 operating frequency band of the electronic device 10.

[0432] In the second 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 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 first resonance point, the currents on the first feeder 221 on both sides of the center are in opposite directions. At the second resonance point, the currents on the first feeder 221 on both sides of the center are in opposite directions. It should be understood that the currents on the first feeder 221 are in opposite directions, allowing operation in 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 flow 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 flow in the same direction.

[0438] In one embodiment, at the third resonance point, the currents on the second feeder 222 are in the same direction. At the fourth resonance point, 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 operate 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. Accordingly, the physical length of the radiator 210 is approximately the same as the physical length of the first feeder 221. Because the electronic components coupled to the first feeder 221 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L2 of the first feeder 221 satisfy the following relationship: 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 the following relationship: 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, which 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. Accordingly, the physical length of the radiator 210 is approximately the same as the physical length of the second feeder 222. Because the electronic components coupled to the second feeder 222 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L3 of the second feeder 222 satisfy the following relationship: 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 the following relationship: L1≤L3≤L1×150%.

[0443] In one embodiment, in the electronic device 10, the first feeder 221 and the second feeder 222 are spaced apart, which can be understood as the first feeder 221 and the second feeder 222 are not disposed on the same surface. For example, the first feeder 221 and the second feeder 222 can be disposed on the upper surface and the lower surface of the bracket, respectively. Alternatively, the first feeder 221 and the second feeder 222 can be disposed on different surfaces of multiple dielectric layers included in the PCB. Alternatively, the first feeder 221 and the second feeder 222 can be disposed on the surface of the bracket and the surface of the PCB, respectively, or 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 intersecting at an angle, the first position 201 is located on the first side, and the second position 202 is located on 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] Figures 50 and 51 are simulation results of antenna 200 in electronic device 10 shown in Figure 49. Figure 50 is an S-parameter simulation result of antenna 200 in electronic device 10 shown in Figure 49. Figure 51 is a simulation result of system efficiency and radiation efficiency of antenna 200 in electronic device 10 shown in Figure 49.

[0446] As shown in FIG50 , the first antenna ( S11 ) can resonate at approximately 5.1 GHz and 5.7 GHz, which correspond to the first and second resonances in the above embodiment, respectively. The second antenna ( S22 ) can resonate at approximately 3.3 GHz and 3.9 GHz, which correspond to the third and fourth resonances in the above embodiment, respectively.

[0447] The first and second resonances are generated by the slot DM mode, while the third and fourth resonances are generated by the slot CM mode. This ensures good isolation between the first and second antennas. Within their respective resonant frequency bands, the isolation (S12) between the first and second antennas is less than -11dB, with S11 / S22 < -4dB as the limit.

[0448] As shown in Figure 51, the third and fourth resonances are both generated by the slot CM mode. Since the slot CM mode has high radiation efficiency and system efficiency, the second antenna does not produce a notch within the operating frequency band of the third and fourth resonances, thus achieving good radiation efficiency and system efficiency. The first and second resonances are both generated by the slot DM mode. Since the slot DM mode has low radiation efficiency and system efficiency when intersecting with the slot CM mode, the radiation efficiency and system efficiency of the second antenna are higher than those of the first antenna.

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

[0450] As shown in FIG. 52 , 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 location 201 and a second location 202. The frame 11 defines a first gap and a second gap, respectively, at the first location 201 and the second location 202. A grounding point is provided between the first location 201 and the second location 202, where the frame 11 is coupled to the floor 300. In one embodiment, the grounding point is located in the center region between the first location 201 and the second location 202.

[0452] In one embodiment, the grounding point is coupled to the floor 300 to achieve grounding. At the grounding point, the frame 11 can be directly electrically connected to the floor 300 via a spring, or via an inductor, or via a structural member of the middle frame (e.g., a connecting rib). Electrical connection to the floor 300 via a structural member of the middle frame can be understood as at least a portion of the frame 11 being integral with the floor 300.

[0453] In one embodiment, the grounding point can be electrically connected to the floor 300 through a grounding member (eg, spring, connecting rod). 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] Antenna 200 includes a radiator 210 and a feeder 221. The radiator 210 and the feeder 221 are spaced apart and at least partially overlap along a first direction perpendicular to the extension direction of the radiator 210 (e.g., the y-direction). The extension direction of the radiator 210 is the same 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 and second ends of the radiator 210 are open ends, wherein the first and second ends of the radiator 210 correspond to the first and second positions 201 and 202 of the frame 11, respectively. The first and second ends of the feeder 221 are grounded.

[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 the 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 and second ends of the feeder 221 are coupled to the floor 300 for grounding. The feeder 221 can be electrically connected to the floor 300 at the first and second ends via a spring, or via an inductor.

[0457] 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 a gap is formed. In the embodiment of the present application, the spacing setting 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 . The feeding circuit 231 is coupled to the feeding point 211 .

[0459] The feeding element 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 band (LB) (698MHz-960MHz), a middle band (MB) (1710MHz-2170MHz), or a high band (HB) (2300MHz-2690MHz) in a cellular network. Taking the 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 feeding element 221. In the electronic device 10, compared with the radiator 210 (the conductive part in the frame 11 serves as the radiator 210), the radiation environment of the feeding element 221 is poor (for example, the clearance is poor and it is close to adjacent metal parts). However, the feeding element 221 can generate a new current path for the radiator 210, thereby generating a new resonance (for example, a second resonance) to expand the operating bandwidth of the antenna 200.

[0462] At the same time, because the first and second ends of the radiator 210 are open ends, the areas near the first and second ends of the radiator 210 have a strong electric field and a weak current. However, because the first and second ends of the feeder 221 are grounded, the areas near the first and second ends of the feeder 221 have a weak electric field and a strong current. The proximity of the areas of the radiator 210 with a strong electric field (strong magnetic field) to the areas of the feeder 221 with a weak electric field (strong magnetic field) can make the first resonance and the second resonance more balanced. This prevents a radiation efficiency pit from occurring in the first operating frequency band supported by both the first and second resonances, 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 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.

[0464] In one embodiment, at the resonance point of the first resonance, the currents on the first radiator 210 on both sides of the ground point are reversed, and the radiators 210 on both sides of the ground point each have reversed currents (or, in other words, the radiators have current reversal points). At the resonance point of the second resonance, the currents on the first radiator 210 on both sides of the ground point are reversed, and the radiators 210 on both sides of the ground point each have reversed currents (or, in other words, the radiators have current reversal points).

[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 high radiation efficiency and system efficiency, the antenna has good radiation efficiency and system efficiency within the operating 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 element 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 feeding element 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 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%.

[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 projected length to the length of the feed element 221 (or the ratio of the projected length 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 (e.g., the x-direction) and the extension direction of the second side (e.g., the y-direction). 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 (e.g., the x-direction) and the length of the overlapping portion in the extension direction of the second side (e.g., 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.) at 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 center area of ​​the feeder 221.

[0476] It should be understood that when the feed 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, thereby enabling the antenna 200 to have better radiation characteristics (e.g., bandwidth, radiation efficiency, etc.) at the first resonance and the second resonance. The alignment of the feed 221 with the radiator 210 can be understood as the first radiator 210 being symmetrical along the virtual axis of the feed 221, and the length of the feed 221 on both sides of the virtual axis being the same.

[0477] At the same time, the radiator 210 has a weaker electric field and a stronger current near the grounding point. The feeder 221 has a weaker current and a stronger electric field near the center. The proximity of the radiator 210's weaker electric field (stronger magnetic field) area (the grounding point) to the feeder 221's stronger electric field (stronger magnetic field) area (the midpoint) can further balance the first and second resonances.

[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 either side of the grounding point is greater than or equal to 0.9 and less than or equal to 1.1. In one embodiment, both ends of the feeder 221 are coupled to the floor 300 in the same manner (for example, the first and second ends of the feeder 221 are coupled to the floor 300 via inductance or via connecting bars). 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 increased 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. Because the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy the following relationship: 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 the following relationship: L1≤L2≤L1×150%.

[0483] In one embodiment, the physical length L1 of the radiator 210 can 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 ground 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 as to have good coupling characteristics 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 a 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. The floor may also be the middle frame or other metal layer of the electronic device.

[0487] In one embodiment, the feeder 221 on the bracket can 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 can be located at the 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 can be located above a hollow area of ​​the PCB or above the 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. 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 simplicity of discussion, in the technical solution shown in Figure 52, the conductive part of the frame 11 is used as the radiator 210, and the feeder 221 is a non-frame structure (for example, set on a bracket, PCB or back cover). 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, set on a bracket, PCB or back cover).

[0491] In one embodiment, the feeder 221 is strip-shaped. "Strip-shaped" can be understood as having a length that is much greater than its width, for example, a length greater than three times or six times its width. In one embodiment, the smallest of the three dimensions of the feeder 221 is its thickness. For example, when the feeder 221 can be mounted on a surface of the bracket 140, the dimension perpendicular to the bracket 140 surface is its thickness. The dimensions of the feeder 221 other than its thickness can be understood as 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] Figures 53 and 54 are simulation results of antenna 200 in electronic device 10 shown in Figure 52. Figure 53 is an S-parameter simulation result of antenna 200 in electronic device 10 shown in Figure 52. Figure 54 is a simulation result of system efficiency and radiation efficiency of antenna 200 in electronic device 10 shown in Figure 52.

[0494] As shown in FIG53 , the antenna 200 can resonate around 1.9 GHz and 2.2 GHz, wherein the resonance around 1.8 GHz corresponds to the first resonance in the above embodiment, and the resonance around 2.2 GHz corresponds to the second resonance in the above embodiment.

[0495] As shown in Figure 54, both the first and second resonances can be generated by the linear CM mode. Since the linear CM mode has high radiation efficiency and system efficiency, the antenna does not produce a dip within the operating frequency band of the first and second resonances, resulting in good radiation efficiency and system efficiency. For example, with a system efficiency > -2dB, the system efficiency bandwidth of antenna 200 is approximately 500MHz.

[0496] Figures 55 and 56 are schematic diagrams showing the current and electric field distribution of antenna 200 in electronic device 10 shown in Figure 52. Figure 55 is a schematic diagram showing the current distribution of the antenna shown in Figure 52 at the first resonance point (1.88 GHz). Figure 56 is a schematic diagram showing the current distribution of the antenna shown in Figure 52 at the second resonance point (2.16 GHz).

[0497] As shown in Figure 55 , the currents on the first radiator 210 on either side of the grounding point are reversed, while the currents on either side of the center of the feeder are reversed. The current distribution on the radiator conforms to the current characteristics of the line CM mode, while the current distribution on the feeder conforms to the current characteristics of the slot DM mode.

[0498] As shown in Figure 56, the currents on the first radiator 210 on both sides of the grounding point are in opposite directions, while the currents on both sides of the center of the feeder are in opposite directions. The current distribution on the radiator conforms to the current characteristics of the line CM mode, while the current distribution on the feeder conforms to the current characteristics of the slot DM mode.

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

[0500] As shown in FIG57 , the first and second ends of the feeder 221 are grounded. The feeder 221 may have a third slot. In one embodiment, the third slot may be located in the center of the feeder 221.

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

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

[0503] For the sake of simplicity, the parts of the antenna 200 shown in Figure 57 that are similar to the antenna 200 shown in Figure 52 are not repeated one by one. For example, the 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 so on.

[0504] In the antenna 200 shown in Figure 57, the feed element 221 can have both the slot DM mode and the slot CM mode. When the feed circuit 231 feeds an electrical signal, the antenna 200 can generate first, second, third, and fourth resonances to expand the operating 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 radiator 210 on both sides of the ground point are reversed, and opposite currents are distributed on the radiator 210 on both sides of the ground point (or, in other words, the radiator has a current reversal point). At the resonance point of the second resonance, the currents on the radiator 210 on both sides of the ground point are reversed, and opposite currents are distributed on the radiator 210 on both sides of the ground point (or, in other words, the radiator has a current reversal point).

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

[0508] In one embodiment, the feeding point 211 may be located on the first side of the second slit (between the second slit 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 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 on 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] Figure 58 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0511] As shown in FIG. 58 , 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 first end of the feeding element 221 is different from the distance between the feeding point 211 and the second end of the feeding element 221 , and the feeding element 221 may 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 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 the difference between the antenna 200 shown in FIG58 and the antenna 200 shown in FIG52 is that the second end of the feeder 221 is open. In the antenna 200 shown in FIG52, the first and second ends of the feeder 221 are grounded, and the feeder 221 forms a radiator structure consistent with a slot antenna. In the antenna 200 shown in FIG58, the first end of the feeder 221 is grounded and the second end is open, and the feeder 221 can form a structure similar to a left-handed antenna. When an electrical signal is fed into the feeding point, a current in the same direction can also be generated on the radiator 210, similar to the partial current on the feeder 221 shown in FIG52, which can also excite the radiator 210 to produce a second resonance. In addition, because the first end of the feeder 221 is grounded and the second end is open, the size of the feeder 221 can be further reduced, achieving miniaturization.

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

[0516] It should be understood that the area near the ground point of the radiator 210 has a weaker electric field and a stronger current. The area near the open end of the feeder 221 has a weaker current and a stronger electric field. The proximity of the area with a weaker electric field (stronger magnetic field) of the radiator 210 (the ground point) to the area with a stronger electric field (stronger magnetic field) of the feeder 221 (the open end) can achieve a more balanced first and second resonances.

[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 feeding element 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 feeding element 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 the electrical length of the radiator 210. Correspondingly, the physical length of the feeder 221 is approximately half the physical length of the radiator 210. Because the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy the following relationship: 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 the following relationship: L1×50%≤L2≤L1×75%.

[0522] For the sake of simplicity, parts of the antenna 200 shown in FIG58 that are similar to those of the antenna 200 shown in FIG9 are not described one by one. For example, the similar parts include: the feeding element 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 feeding element 221, for example, a strip shape; the position where the feeding element 221 is set, etc.

[0523] It should be understood that the feeding elements shown in the antenna 200 (for example, FIG. 52 ) shown in the above embodiment can adopt a structure in which the first end is a grounded 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] Figures 59 and 60 show simulation results for antenna 200 in electronic device 10 shown in Figure 58. Figure 59 shows the S-parameter simulation results for antenna 200 in electronic device 10 shown in Figure 58. Figure 60 shows the system efficiency and radiation efficiency simulation results for antenna 200 in electronic device 10 shown in Figure 58.

[0525] As shown in Figure 59, compared to the antenna shown in Figure 52, the antenna shown in Figure 58 can also resonate near 1.9 GHz and 2.2 GHz (because the frequencies of the two resonance points are close, they are combined into one resonance). However, because the first end of the feed element in the antenna shown in Figure 58 is grounded and the second end is open, the antenna structure is less symmetrical. Therefore, the antenna's operating bandwidth is narrow, and the excitation of the linear DM mode near 2.6 GHz is enhanced.

[0526] As shown in FIG60 , the antenna does not generate pits within the working frequency band formed by the first resonance and the second resonance, and has good radiation efficiency and system efficiency.

[0527] Figure 61 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 provided between the feeding circuit 231 and the feeding element 221. In actual applications, a matching circuit can be provided 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).

[0529] In one embodiment, when the first and second ends of the feeding element 221 are grounded (as shown in FIG52 ), a capacitor or inductor may be provided between the feeding circuit 231 and the feeding element 221 , as shown in (a) or (b) in FIG61 .

[0530] In one embodiment, when the first end of the feeding element 221 is grounded and the second end is an open end (as shown in FIG58 ), a capacitor may be provided between the feeding circuit 231 and the feeding element 221 , as shown in (c) in FIG61 .

[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] FIG62 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0533] As shown in FIG62 , the frame 11 includes a first position 201, a second position 202, and a third position 203, which are sequentially arranged. 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 defined in the first position 201 and the second position 202, respectively. The frame 11 also includes a grounding point located between the first position 201 and the second position 202. 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 center 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 the difference between antenna 200 shown in FIG. 62 and antenna 200 shown in FIG. 52 lies in the parasitic stub. Here, radiator 210 (the conductive portion between first position 201 and second position 202) can form a radiator structure consistent with a line antenna, generating the aforementioned first and second resonances via the line CM mode. The parasitic stub and part of the radiator (the conductive portion between the ground point and third position 203) can form a radiator structure consistent with a slot antenna, generating the fifth resonance via the slot DM mode. In one embodiment, the currents in first radiator 210 on both sides of the second slot are 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 (within 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 (within 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 simplicity, parts of the antenna 200 shown in Figure 62 that are similar to the antenna 200 shown in Figures 52, 57, 58, 60, and 61 will not be repeated 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 in the technical solution shown in Figure 62, 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 above-mentioned 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 any of the embodiments shown in Figures 52 to 60 above.

[0540] In one embodiment, the technical solution shown in FIG. 62 may be applied to the antenna 200 shown in FIG. 58 , as shown in FIG. 63 .

[0541] In the antenna 200 shown in FIG63 , 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] Figures 64 and 65 show simulation results for antenna 200 in electronic device 10 shown in Figure 62. Figure 64 shows the S-parameter simulation results for antenna 200 in electronic device 10 shown in Figure 62. Figure 65 shows the system efficiency and radiation efficiency simulation results for antenna 200 in electronic device 10 shown in Figure 62.

[0543] As shown in FIG64 , from 1.8 GHz to 3 GHz, compared with the antenna shown in FIG52 , the antenna shown in FIG62 can additionally generate a fifth resonance near 2.7 GHz. With S11 being less than -4 dB as the limit, the operating bandwidth is greater than the operating bandwidth of the antenna shown in FIG52 .

[0544] As shown in FIG65 , no efficiency pit occurs near the fifth resonance where the antenna can additionally generate. The antenna has good radiation efficiency and system efficiency within the operating frequency band formed by the first resonance, the second resonance, and the fifth resonance.

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

[0546] As shown in Figure 66, the frame 11 has a first slit 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 open, and the second end is grounded. The first and second ends of the radiator 210 correspond to the first and second positions 201 and 202 of the frame 11, respectively. The first and second ends of the feed element 221 are grounded.

[0547] In one embodiment, a ratio of a length of an overlapping portion of a projection of the feeding element 221 on the frame 11 and the radiator 210 to a 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 present embodiment, "covering" can be understood as including the second position 202 within the area of ​​the frame occupied by the projection of the feeder 221 on the frame 11. As shown in FIG66 , the projection of the feeder 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 center area of ​​the feed 221.

[0552] In which, when the second position 202 is located in the intersection area of ​​the two edges of the frame 11 (for example, the intersection area can be understood as when the second position 202 is located on the first side, the distance between the second position 202 and the second edge along the extension direction of the first side is less than or equal to 10 mm. Alternatively, the intersection area can also be understood as the arc area where the first side and the second side intersect), the projection of the second position 202 on the feeding element 221 can be understood as the projection of the second position 202 on the feeding element 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 near the second position 202. The feeder 221 has a weaker current and a stronger electric field near the center. The proximity of the radiator 210's weaker electric field (stronger magnetic field) region (second position 202) to the feeder 221's stronger electric field (stronger magnetic field) region (midpoint) can further balance the first and second resonances.

[0554] It should be understood that the difference between the antenna 200 shown in FIG66 and the antenna 200 shown in the above embodiment includes that the second end of the radiator 210 is a ground end.

[0555] In the antenna 200 shown in Figures 52 to 65 above, the first and second ends of the radiator 210 are open, and the radiator 210 can form a radiator structure consistent with a linear antenna. In the antenna 200 shown in Figure 66, the first end of the radiator 210 is open and the second end is grounded. When an electrical signal is fed into the feed point, currents in the same direction can be generated on the radiator 210, and the radiator 210 can be stimulated to produce the first resonance and the second resonance. Furthermore, because the first end of the radiator 210 is open and the second end is grounded, the size of the radiator 210 can be further reduced (for example, it can be considered as a reduction from a half-wavelength structure to a quarter-wavelength structure), 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 the electrical length of the feeder 221. Correspondingly, the physical length of the radiator 210 is approximately half the physical length of the feeder 221. Because the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy the following relationship: 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 the following relationship: L1×200%≤L2≤L1×300%.

[0558] For the sake of simplicity, parts of the antenna 200 shown in FIG66 that are similar to those of the antenna 200 shown in FIG52 to FIG65 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] Figure 67 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0560] As shown in FIG67 , frame 11 includes a first position 201 and a second position 202. Frame 11 defines a first gap and a second gap, respectively, at first position 201 and second position 202. A grounding point is located between first position 201 and second position 202, where frame 11 is coupled to floor 300. In one embodiment, the grounding point is located in the center region between first position 201 and 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. The radiator 210 at least partially overlaps with the first feeder 221 and the second feeder 222 along a first direction perpendicular to the extension direction of the first radiator 210 (e.g., the y-direction). The extension direction of the first radiator 210 is the same as the extension direction of the first feeder 221. The first and second ends of the first feeder 221 are grounded. The first and second ends of the second feeder 222 are open.

[0564] 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.

[0565] It should be understood that in the above embodiments, the one-to-one correspondence between the radiator and the feeding element is used as an example for explanation. In the embodiment shown in Figure 67, the radiator can be excited by two feeding elements to produce resonance, thereby expanding the bandwidth while reducing the size of the antenna 200.

[0566] 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.

[0567] In the first antenna, radiator 210 forms a radiator structure similar to a linear antenna. When fed with an electrical signal via the first feeding unit, radiator 210 can generate a first resonance and a second resonance in 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 electronic device 10.

[0568] In the second antenna, radiator 210 forms a radiator structure similar to a linear antenna. When fed with an electrical signal via the second feeding unit, radiator 210 can generate third and fourth resonances in a linear DM mode. In one embodiment, the third and fourth resonances can be used to jointly support the second operating frequency band of electronic device 10.

[0569] 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.

[0570] 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.

[0571] Due to the good isolation between the linear CM mode and the linear DM mode, mutual interference between the first antenna and the second antenna is minimal. In one embodiment, the first operating frequency band and the second operating frequency band can be the same, and the first antenna and the second antenna can serve as sub-antennas in a MIMO system to improve the communication performance of the electronic device. In another embodiment, the first operating frequency band and the second operating frequency band can be different.

[0572] 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.

[0573] 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 opposite. It should be understood that the currents on the first feeder 221 are distributed in opposite directions and can operate in the slot DM mode.

[0574] 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.

[0575] In one embodiment, at the third resonance point, the currents on the second feeder 222 are in the same direction. At the fourth resonance point, 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 operate in the line DM mode.

[0576] 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.

[0577] In one embodiment, the electrical length of the radiator 210 is the same as the electrical length of the first feeder 221. Accordingly, the physical length of the radiator 210 is approximately the same as the physical length of the first feeder 221. Because the electronic components coupled to the first feeder 221 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L2 of the first feeder 221 satisfy the following relationship: 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 the following relationship: L1≤L2≤L1×150%.

[0578] 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, which is the wavelength corresponding to the center frequency of the third resonance and the fourth resonance.

[0579] In one embodiment, the electrical length of the radiator 210 is the same as the electrical length of the second feeder 222. Accordingly, the physical length of the radiator 210 is approximately the same as the physical length of the second feeder 222. Because the electronic components coupled to the second feeder 222 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L3 of the second feeder 222 satisfy the following relationship: 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 the following relationship: L1≤L3≤L1×150%.

[0580] In one embodiment, in the electronic device 10, the first feeder 221 and the second feeder 222 being spaced apart can be understood as the first feeder 221 and the second feeder 222 being not disposed on the same surface. For example, the first feeder 221 and the second feeder 222 can be disposed on the upper and lower surfaces of the bracket, respectively. Alternatively, the first feeder 221 and the second feeder 222 can be disposed on different surfaces of multiple dielectric layers included in the PCB. Alternatively, the first feeder 221 and the second feeder 222 can be disposed on the bracket and the PCB surface, respectively.

[0581] Figures 68 and 69 are simulation results of antenna 200 in electronic device 10 shown in Figure 67. Figure 68 is an S-parameter simulation result of antenna 200 in electronic device 10 shown in Figure 67. Figure 69 is a simulation result of system efficiency and radiation efficiency of antenna 200 in electronic device 10 shown in Figure 67.

[0582] As shown in FIG68 , the first antenna ( S11 ) can resonate at approximately 1.85 GHz and 2.3 GHz, corresponding to the first and second resonances in the above embodiment, respectively. The second antenna ( S22 ) can resonate at approximately 2.45 GHz and 2.6 GHz, corresponding to the third and fourth resonances in the above embodiment, respectively.

[0583] The first and second resonances are generated by the linear CM mode, while the third and fourth resonances are generated by the linear DM mode. This ensures good isolation between the first and second antennas. With S11 / S22 < -4dB as the limit, the isolation (S12) between the first and second antennas is less than -14dB within their respective resonant frequency bands.

[0584] As shown in Figure 69, the first and second resonances are both generated by the linear CM mode. Since the linear CM mode has high radiation efficiency and system efficiency, the first antenna does not produce a dip within the operating frequency band of the first and second resonances, resulting in good radiation efficiency and system efficiency. The third and fourth resonances are both generated by the linear DM mode. Since the radiation efficiency and system efficiency of the linear DM mode intersecting with the linear CM mode are low, the radiation efficiency and system efficiency of the second antenna are lower than those of the first antenna.

[0585] Figures 70 and 71 show simulation results for antenna 200 in electronic device 10 shown in Figure 67. Figure 70 shows the S-parameter simulation results for antenna 200 in electronic device 10 shown in Figure 67. Figure 71 shows the system efficiency and radiation efficiency simulation results for antenna 200 in electronic device 10 shown in Figure 67.

[0586] It should be understood that the simulation results shown in Figures 68 and 69 illustrate that the first operating frequency band formed by the first and second resonances and the second operating frequency band formed by the third and fourth resonances may be different. In the simulation results shown in Figures 70 and 71, the first operating frequency band formed by the first and second resonances and the second operating frequency band formed by the third and fourth resonances may be made the same by adjusting certain parameters. For example, the parameters may include the position of the first feeding point, the position of the second feeding point, the spacing between the feeder and the radiator, and components coupled to the feeder / radiator.

[0587] As shown in FIG70 , the first antenna ( S11 ) can resonate at around 2.3 GHz and 2.6 GHz, which correspond to the first and second resonances in the above embodiment, respectively. The second antenna ( S22 ) can resonate at around 2.45 GHz and 2.6 GHz, which correspond to the third and fourth resonances in the above embodiment, respectively.

[0588] The first and second resonances are generated by the linear CM mode, while the third and fourth resonances are generated by the linear DM mode. Therefore, when the first and second operating frequency bands are the same, the first and second antennas maintain good isolation. Within their respective resonant frequency bands, the isolation (S12) between the first and second antennas is less than -15dB, with S11 / S22 < -4dB.

[0589] As shown in Figure 71, the first and second resonances are both generated by the linear CM mode. Since the linear CM mode has high radiation efficiency and system efficiency, the first antenna does not produce a dip within the operating frequency band of the first and second resonances, resulting in good radiation efficiency and system efficiency. The third and fourth resonances are both generated by the linear DM mode. Since the intersection of the linear DM mode with the linear CM mode results in low radiation efficiency and system efficiency, the radiation efficiency and system efficiency of the second antenna are lower than those of the first antenna.

[0590] Figure 72 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0591] 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. Correspondingly, the working mode of the feeder is also the half-wavelength mode (both ends of the feeder are grounded / open ends. When one end of the feeder is grounded and the other end is open, the working mode of the feeder is the quarter-wavelength mode).

[0592] In antenna 200 shown in FIG72 , the first antenna is identical to the first antenna shown in FIG67 . In the first antenna, radiator 210 operates in the half-wavelength mode of the linear CM mode. Unlike the second antenna shown in FIG67 , the second antenna shown in FIG72 can be excited by second feeder 222 in the three-half-wavelength mode of radiator 210. Accordingly, the third and fourth resonances can be generated in the three-half-wavelength mode of the linear DM mode.

[0593] Furthermore, when the third and fourth resonances can be generated in a three-half wavelength mode, the operating mode of the second feeder 222 can be a 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 the following relationship: L1×20%≤L3≤L1×50%.

[0594] In one embodiment, in the first antenna, radiator 210 forms a radiator structure consistent with a linear antenna. When an electrical signal is fed via a first feeding unit, radiator 210 can generate a first resonance, a second resonance, a fifth resonance, and a sixth resonance in a linear CM mode. The first resonance and the second resonance are used to jointly support the first operating frequency band of electronic device 10, and the fifth resonance and the sixth resonance are used to jointly support the third operating frequency band of 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 double-wavelength mode of the linear CM mode.

[0595] In the second antenna, radiator 210 forms a radiator structure consistent with a linear antenna. When an electrical signal is fed into the second feeding unit, radiator 210 can generate a third resonance and a fourth resonance in a linear DM mode. The third resonance and the fourth resonance are used to jointly support the second operating frequency band of 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.

[0596] In one embodiment, the third operating frequency band and the second operating frequency band may be the same, and the first antenna and the second antenna may serve as sub-antennas in a MIMO system to improve communication performance of the electronic device. In one embodiment, the third operating frequency band and the second operating frequency band may be different.

[0597] Figures 73 and 74 are simulation results of antenna 200 in electronic device 10 shown in Figure 72. Figure 73 is an S-parameter simulation result of antenna 200 in electronic device 10 shown in Figure 72. Figure 74 is a simulation result of system efficiency and radiation efficiency of antenna 200 in electronic device 10 shown in Figure 72.

[0598] As shown in FIG73 , the first antenna ( S11 ) can resonate at approximately 0.7 GHz, 0.95 GHz, 2.45 GHz, and 2.9 GHz, which correspond to the first and second resonances, and the fifth and sixth resonances, respectively, in the above-described embodiment. The second antenna ( S22 ) can resonate at approximately 2.5 GHz and 2.7 GHz, which correspond to the third and fourth resonances, respectively, in the above-described embodiment.

[0599] The first and second resonances are generated by the half-wavelength mode of the linear CM mode, the fifth and sixth resonances are generated by the double-wavelength mode of the linear CM mode, and the third and fourth resonances can be generated by the three-half-wavelength mode of the linear DM mode. Therefore, when the fifth and sixth resonances have approximately the same resonant point frequencies as the third and fourth resonances, good isolation is achieved between the first and second antennas. With S11 / S22 < -4dB as the limit, the isolation (S12) between the first and second antennas is less than -14dB within their respective resonant frequency bands.

[0600] As shown in FIG74 , 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.

[0601] Figure 75 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0602] As shown in Figure 75, the frame 11 has a first slit 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 open, and the second end is grounded. The first and second ends of the radiator 210 correspond to the first and second positions 201, 202 of the frame 11, respectively. The first end of the feeder 221 is grounded, and the second end is open.

[0603] The ratio 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 the radiator 210.

[0604] 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 of the feeder 221 is grounded, and the second end is open; (3) the first end of the radiator 210 is grounded, and the second end is open, and the first end and the second end of the feeder 221 are open; (4) the first end and the second end of the radiator 210 are open, 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, and the first end of the feeder 221 is grounded, and the second end is open; (6) the first end of the radiator 210 is open, and the second end is grounded, and the first end and the second end of the feeder 221 are grounded.

[0605] The difference between the antenna 200 shown in FIG75 and the antenna 200 shown in the above embodiment is 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 being reduced from a half-wavelength structure to a quarter-wavelength structure), thereby achieving miniaturization.

[0606] 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.

[0607] In one embodiment, the electrical length of the radiator 210 is the same as the electrical length of the feeder 221. Accordingly, the physical length of the radiator 210 is approximately the same as the physical length of the feeder 221. Because the electronic components coupled to the feeder 221 / radiator 210 can increase or decrease in physical length while maintaining the same electrical length, the physical length L1 of the radiator 210 and the physical length L2 of the feeder 221 satisfy the following relationship: 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 the following relationship: L1 ≤ L2 ≤ L1 × 150%.

[0608] In one embodiment, a capacitor may be provided between the feed circuit and the feed element. In one embodiment, the capacitance 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.

[0609] For the sake of simplicity, parts of the antenna 200 shown in Figure 75 that are similar to the antenna 200 shown in the above embodiment are not repeated 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.

[0610] Figure 76 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0611] It should be understood that in the above embodiment, only the electronic device 10 including a single shell (for example, the middle frame 19 shown in Figure 1) is used as an example for illustration. 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 approximately 180°. In the folded state, the foldable electronic device 10 is currently bent, and the degree of bending of the foldable electronic device 10 reaches the maximum.

[0612] As shown in FIG. 76 , the electronic device 10 may include a first housing 271 , a second housing 272 , and a first rotation shaft 273 .

[0613] 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.

[0614] The first housing 271 includes a first frame 2710 , and the second housing 272 includes a second frame 2720 .

[0615] 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 defines a first gap and a second gap at the third position 203 and the fourth position 204, respectively.

[0616] 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.

[0617] The second frame 2720 includes a grounding point between the third position 203 and the fourth position 204, where the second frame 2720 is coupled to the floor. In one embodiment, the grounding point is located in a central area between the third position 203 and the fourth position 204.

[0618] 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 spaced apart and at least partially overlap along a first direction perpendicular to the extension direction of the first radiator 210 (e.g., 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 spaced apart and at least partially overlap along a second direction perpendicular to the extension direction of the second radiator 220 (e.g., the x-direction). The second radiator 220 extends in the same direction as the second feeder 222. The first and second directions can be the same or different. The first and second ends of the first feeder 221 are open. The first and second ends of the second feeder 222 are grounded.

[0619] 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.

[0620] 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, and the second radiator 220 may form the second antenna.

[0621] 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.

[0622] The second radiator 220 can form a radiator structure consistent with a linear antenna. Through the second feeding unit 232, the second radiator 220 can generate a third resonance and a fourth resonance in 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.

[0623] Due to the good isolation between the slot CM mode and the line CM mode, mutual interference between the first antenna and the second antenna is minimal. In one embodiment, the first operating frequency band and the second operating frequency band can be the same or adjacent. In one embodiment, the first antenna and the second antenna can serve 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 can be different.

[0624] In one embodiment, the first antenna can be any antenna 200 described in Figures 9 to 40 or an antenna combined with any multiple antenna structures in Figures 9 to 40, and the second antenna can be any antenna 200 described in Figures 52 to 60 or an antenna combined with any multiple antenna structures in Figures 52 to 60, which can be selected based on actual production or design. For the sake of simplicity, the parts of the antenna 200 shown in Figure 76 that are similar to the antenna 200 shown in the above embodiment will not be repeated one by one, such as the positional relationship between the radiator and the corresponding feeder; the width of the gap opened on the frame; the shape of the feeder, for example, a strip; the position where the feeder is set; and the working frequency band formed by the two resonances, etc.

[0625] For simplicity, the antenna 200 shown in FIG76 is described using only an example in which the first and second ends of the first feeder 221 are both open, and the first and second ends of the second feeder 222 are both grounded. In actual production or design, the first and second feeders 221 and 222 shown in FIG76 may also refer to the above embodiment, with the first and second ends being open and grounded, respectively.

[0626] 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.

[0627] 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%.

[0628] In one embodiment, when the electronic device 10 is in the folded state, the first slit or the second slit is aligned with the third slit, as shown in FIG77(a). Alignment can be understood as the first slit or the second slit at least partially overlapping with the third slit in a third direction, where the third direction is the thickness direction of the electronic device 10, for example, the z-direction.

[0629] It should be understood that aligning the first or second slit with the third slit can make the housing of the electronic device 10 more aesthetically pleasing and enhance the user experience. When the first or second slit is aligned with the third slit, the first radiator 210 and the second radiator 220 at least partially overlap in the third direction.

[0630] In one embodiment, when the electronic device 10 is in the folded state, the first slit or the second slit is not aligned with the third slit, as shown in (b) of FIG. 77 .

[0631] 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.

[0632] 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.

[0633] Figures 78 to 81 show simulation results for antenna 200 in electronic device 10 shown in Figure 76. Figure 78 shows the S-parameter simulation results for antenna 200 when electronic device 10 shown in Figure 76 is in the unfolded state. Figure 79 shows the S-parameter simulation results for antenna 200 when electronic device 10 shown in Figure 76 is in the folded state. Figure 80 shows the system efficiency and radiation efficiency simulation results for antenna 200 when electronic device 10 shown in Figure 76 is in the unfolded state. Figure 81 shows the system efficiency and radiation efficiency simulation results for antenna 200 when electronic device 10 shown in Figure 76 is in the folded state.

[0634] As shown in FIG78 , when the electronic device 10 is in the unfolded state, the first antenna ( S11 ) can resonate at approximately 2 GHz and 2.35 GHz, corresponding to the first and second resonances in the above-described embodiment, respectively. The second antenna ( S22 ) can resonate at approximately 2 GHz and 2.6 GHz, corresponding to the third and fourth resonances in the above-described embodiment, respectively.

[0635] As shown in Figure 79, when the electronic device 10 is in the folded state, the first antenna (S11) can resonate at approximately 2 GHz and 2.3 GHz, and the second antenna (S22) can resonate at approximately 2.1 GHz and 2.6 GHz. The resonant point frequencies at which the first and second antennas resonate when the electronic device 10 is in the folded state are substantially the same as the resonant point frequencies at which the first and second antennas resonate when the electronic device 10 is in the unfolded state.

[0636] Moreover, 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, the isolation (S12) between the first antenna and the second antenna is less than -13dB within the resonant frequency band. The first antenna and the second antenna can be used as sub-antennas in a MIMO system.

[0637] It should be understood that, for the sake of simplicity, in the above embodiments, the first antenna and the second antenna are used as sub-antennas in a MIMO system as an example. In actual production or design, the first antenna and the second antenna may also operate in different operating frequency bands respectively.

[0638] As shown in Figures 80 and 81, 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 high radiation efficiency and system efficiency, when the electronic device 10 is in the folded state or the unfolded state, the antenna has good 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.

[0639] Figure 82 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0640] As shown in FIG82 , the structure of the first antenna in antenna 200 is the same as that of the first antenna in antenna 200 shown in FIG76 , with first radiator 210 being the conductive portion between first position 201 and second position 202. The antenna 200 shown in FIG82 differs from the antenna 200 shown in FIG76 in that the conductive portion between third position 203 and fourth position 204 of second frame 2720 serves as second feeder 222, second radiator 220 is disposed on the surface of the bracket, and second frame 2720 is coupled to the floor at third position 203 and fourth position 204.

[0641] It should be understood that in the electronic device 10 shown in FIG. 82 , 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.

[0642] For the sake of simplicity, the second radiator 220 and the second feeder 222 in the second antenna are used as an example for illustration. 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 portion between the first position 201 and the second position 202 serving as the first feeder 221.

[0643] In one embodiment, the first radiator 210 and the second feeding element 221 at least partially overlap in the third direction. In one embodiment, the first radiator 210 and the second feeding element 221 completely overlap in the third direction.

[0644] Figures 83 to 86 show simulation results for the antenna 200 in the electronic device 10 shown in Figure 82. Figure 83 shows the S-parameter simulation results for the antenna 200 when the electronic device 10 shown in Figure 82 is in the unfolded state. Figure 84 shows the S-parameter simulation results for the antenna 200 when the electronic device 10 shown in Figure 82 is in the folded state. Figure 85 shows the system efficiency and radiation efficiency simulation results for the antenna 200 when the electronic device 10 shown in Figure 82 is in the unfolded state. Figure 86 shows the system efficiency and radiation efficiency simulation results for the antenna 200 when the electronic device 10 shown in Figure 82 is in the folded state.

[0645] As shown in FIG83 , when the electronic device 10 is in the unfolded state, the first antenna ( S11 ) can resonate at approximately 2.25 GHz and 2.6 GHz, corresponding to the first and second resonances in the above embodiment, respectively. The second antenna ( S22 ) can resonate at approximately 1.95 GHz and 2.4 GHz, corresponding to the third and fourth resonances in the above embodiment, respectively.

[0646] 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 feeder conforming to the slot antenna resonates around 2.35 GHz.

[0647] As shown in Figure 84, when the electronic device 10 is in the folded state, the first antenna (S11) can resonate at approximately 2.35 GHz and 2.7 GHz, and the second antenna (S22) can resonate at approximately 2.05 GHz and 2.5 GHz. The resonant point frequencies at which the first and second antennas resonate when the electronic device 10 is in the folded state are substantially the same as the resonant point frequencies at which the first and second antennas resonate when the electronic device 10 is in the unfolded state.

[0648] When the electronic device 10 is in the folded state, the second radiator is not provided, and the second antenna is formed only by the second feeding element, and the radiator structure (slot DM mode) conforming to the slot antenna resonates around 2.55 GHz.

[0649] Furthermore, when the electronic device 10 is in the folded state, the first and second resonances are generated by the slot CM mode, and the third and fourth resonances are generated by the line CM mode. Compared to when the electronic device 10 is in the unfolded state (when the distance between the first antenna and the second antenna is relatively 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, the isolation (S12) between the first antenna and the second antenna is less than -20dB within the resonant frequency band. The first antenna and the second antenna can serve as sub-antennas in a MIMO system.

[0650] It should be understood that, for the sake of simplicity, in the above embodiments, the first antenna and the second antenna are used as sub-antennas in a MIMO system as an example. In actual production or design, the first antenna and the second antenna may also operate in different operating frequency bands respectively.

[0651] As shown in Figures 85 and 86, 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 high radiation efficiency and system efficiency, when the electronic device 10 is in the folded state or the unfolded state, the antenna has good 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.

[0652] It should be understood that, because the conductive portion between the third and fourth positions of the second frame in the antenna 200 shown in FIG82 serves as the second feeder, the radiation environment of the second radiator (e.g., clearance, electronic components arranged around the radiator) is poor, and the efficiency bandwidth of the second antenna (e.g., the bandwidth corresponding to system efficiency > -2dB) is narrow. However, compared to the case where the second radiator is not provided, 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.

[0653] FIG87 shows simulation results of the directivity coefficient of the antenna 200 when the electronic device 10 shown in FIG82 is in the unfolded state.

[0654] As shown in (a) of FIG87 , this 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.

[0655] As shown in Figure 87(b), the simulation results for the second antenna at 2.57 GHz, with the second radiator, show a directivity coefficient of 4.7 dBi. Compared to the case without the second radiator, the energy radiated by the second antenna is more dispersed and less concentrated at a single angle, thereby improving the communication performance of the electronic device.

[0656] Figure 88 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0657] As shown in FIG88 , the first frame 2710 has slits at the first position 201 and the second position 202. The second frame 2720 has slits at the third position 203 and the fourth position 204.

[0658] It should be understood that the difference between the electronic device 10 shown in FIG. 88 and the electronic devices 10 shown in FIG. 76 and FIG. 82 is only that the boundary conditions of the first radiator 210 are different.

[0659] In the electronic device 10 shown in Figures 76 and 82 , both ends of the first radiator 210 are grounded, and the first radiator 210 can form a radiator structure consistent with a slot antenna. Through the first feeding circuit 231, the first radiator 210 can generate a first resonance and a second resonance in 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.

[0660] In the electronic device 10 shown in FIG88 , both ends of the first radiator 210 are open, and the first radiator 210 can form a radiator structure consistent with 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. The first resonance and the second resonance are used to jointly support the first operating frequency band of the electronic device 10.

[0661] Due to the good isolation between the linear DM mode and the linear CM mode, mutual interference between the first antenna and the second antenna is minimal. In one embodiment, the first operating frequency band and the second operating frequency band can be the same or adjacent. In one embodiment, the first antenna and the second antenna can serve 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 can be different.

[0662] For simplicity, the antenna 200 shown in FIG88 is described using only an example in which both ends of the first radiator 210 and the second radiator 220 are open. In actual production or design, both ends of the first radiator 210 and the second radiator 220 shown in FIG88 may also be grounded. For simplicity, these details are not repeated here.

[0663] Figure 89 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0664] It should be understood that in the above embodiment, the antenna 200 is described as 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.

[0665] As shown in Figure 89, 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 arranged on the first frame 2710 in sequence.

[0666] 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 the center region between the fifth position 205 and the sixth position 206. In one embodiment, when the electronic device 10 is in the folded state, the third gap and the fourth gap are aligned with the first gap and the second gap.

[0667] The antenna 200 further includes a third radiator 230 , a third feeding element 223 and a third feeding circuit 233 .

[0668] The third radiator 230 is a conductive portion between the fifth position 205 and the sixth position 206. The third radiator 230 and the third feeder 223 are spaced apart and at least partially overlap along a fourth direction perpendicular to the extension direction of the third radiator 230 (e.g., the x-direction). The extension direction of the third radiator 230 is the same as the extension direction of the third feeder 223.

[0669] The first radiator 210 extends in a direction perpendicular to 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 third feeder 223 extends in a direction perpendicular to the first feeder 221.

[0670] 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.

[0671] The third feeding element 223 includes a third feeding point, and the third feeding circuit 233 is coupled to the third feeding point 211 .

[0672] The first end and the second end of the third feeding element 223 are open ends.

[0673] 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.

[0674] The second radiator 220 can form a radiator structure consistent with a linear antenna. Through the second feeding unit 232, the second radiator 220 can generate a third resonance and a fourth resonance in 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.

[0675] 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 operating frequency band of the electronic device 10.

[0676] Due to the good isolation between the slot CM mode and the line CM mode, interference between the first and second antennas, and between the third and second antennas, is minimal. Furthermore, because the extension direction of the first radiator 210 is perpendicular to that of the third radiator 230, the two are spatially orthogonal. Therefore, the resonance generated by the slot CM mode of the first radiator 210 and the resonance generated by the slot CM mode of the third radiator 230 are orthogonal. This minimizes mutual interference between the first and third antennas.

[0677] In one embodiment, due to the good isolation between the first and third antennas, electronic device 10 may include only the first and third antennas. In one embodiment, electronic device 10 may include only one housing. Alternatively, electronic device 10 may include multiple housings, and the first and third antennas may be disposed on the same housing.

[0678] 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 serve 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.

[0679] In one embodiment, the first antenna and the third antenna can be any of the antennas 200 described in Figures 9 to 40, and the second antenna can be any of the antennas 200 described in Figures 52 to 60, which can be selected based on actual production or design. For the sake of simplicity, the parts of the antenna 200 shown in Figure 89 that are similar to the antenna 200 shown in the above embodiments will not be described in detail, such as the positional relationship between the radiator and the corresponding feeder; the width of the gap opened in the frame; the shape of the feeder, such as a strip; the location of the feeder; and the operating frequency band formed by the two resonances.

[0680] Meanwhile, for the sake of simplicity, the antenna 200 shown in FIG89 is described using only an example in which the first and second ends of the first feeder 221 and the third feeder 223 are both open, and the first and second ends of the second feeder 222 are both grounded. In actual production or design, the first feeder 221, the second feeder 222, and the third feeder 223 shown in FIG89 can also refer to the above embodiment, and the first and second ends can also be open and grounded, respectively.

[0681] 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%).

[0682] 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%.

[0683] In one embodiment, the second position 202 coincides with (is identical to) 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 via a grounding member (e.g., a spring clip, a connecting rib). As the width of the connection between the grounding member and 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 via a spring clip (the width of the connection between the grounding member and the first frame 2710 is approximately 1 mm), and the isolation between the first antenna and the third antenna is approximately 10 dB. In one embodiment, the second position 202 is electrically connected to the floor via a connecting rib (the width of the connection between the grounding member and the first frame 2710 is greater than or equal to 3 mm), and the isolation between the first antenna and the third antenna is greater than 13 dB.

[0684] Figure 90 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0685] As shown in FIG90( a ), the frame 11 is coupled to the floor 300 at a first location 201 and a second location 202. A gap is formed in the frame 11 between the first location 201 and the second location 202 (e.g., the distance between the conductors on either side of the gap is greater than or equal to 5 mm). The radiator 210 is the conductive portion of the frame 11 between the first location 201 and the second location 202.

[0686] The radiator 210 is divided by a slit into a first portion 301 and a second portion 302. 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 (e.g., the y direction).

[0687] 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 the sum of the lengths of the first portion 301 and the second portion 302.

[0688] It should be understood that in the above embodiments, the radiator is only described as a continuous conductor portion. In actual production or design, the radiator may also be a discontinuous conductor portion.

[0689] 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 in the third position 203 and the fourth position 204, as shown in FIG90(b).

[0690] In one embodiment, the first portion 301 is the conductive portion of the frame 11 between the first position 201 and the third position 203. The second portion 302 is the conductive portion of the frame 11 between the fourth position 204 and the second position 202. The radiator 210 includes the first portion 301 and the second portion 302.

[0691] In one embodiment, the conductive portion between the third position 203 and the fourth position 204 may be a suspended branch (excluding a grounding point), as shown in (b) of Figure 90. In one embodiment, the conductive portion between the third position 203 and the fourth position 204 may also include a grounding point, as shown in (c) of Figure 90.

[0692] In one embodiment, antenna 200 may further include an inductor. The inductor may be coupled between feed element 221 and floor 300. The inductor may be used to increase the physical length of feed element 221 while maintaining its electrical length. This allows feed element 221 to at least partially overlap with first portion 301 and second portion 302 along the first direction even when the minimum distance D0 between first portion 301 and second portion 302 is increased.

[0693] It should be understood that in the electronic device 10 shown in FIG90 , the antenna 200 may be any one of the antennas 200 described in FIG9 to FIG40 .

[0694] Similarly, in the electronic device 10 shown in FIG. 90 , or the antenna combined with any multiple antenna structures in FIG. 9 to FIG. 40 , the second antenna may be any antenna 200 described in FIG. 52 to FIG. 60 .

[0695] In one embodiment, when the frame 11 has gaps at the first position 201 and the second position 202, the first position 201 and the second position 202 can be coupled to the floor 300 via a grounding point. The grounding point can separate the radiator 210 into the first part 301 and the second part 302, as shown in FIG91.

[0696] In one embodiment, the minimum distance 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 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 between the first portion 301 and the second portion 302 is less than or equal to one-half the sum of the lengths of the first portion 301 and the second portion 302.

[0697] In one embodiment, when the radiator 210 is coupled to the floor 300 at the grounding point through the grounding rib, the width of the grounding rib can be less than or equal to the length of the first part 301, or less than or equal to the length of the second part 302, or less than or equal to half of the sum of the length of the first part 301 and the length of the second part 302, as shown in (a) in Figure 91.

[0698] In one embodiment, multiple grounding points may be provided, as shown in FIG91( b ). For example, the frame 11 may include a third position 203 and a fourth position 204, each located between the first position 201 and the second position 202. The frame 11 is coupled to the floor 300 at the third position 203 and the fourth position 204. The third position 203 and the fourth position 204 may serve as the aforementioned grounding points.

[0699] In one embodiment, the width of a grounding point may be understood as the distance between two grounding points that are farthest apart from each other among the multiple grounding points.

[0700] In one embodiment, the width of the grounding point can be less than or equal to the length of the first part 301, or less than or equal to the length of the second part 302, or less than or equal to half the sum of the length of the first part 301 and the length of the second part 302, as shown in (b) in Figure 91.

[0701] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

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, the radiator and the feeder are spaced apart, and the radiator The body and the feeding element at least partially overlap along a first direction, the direction is perpendicular to the extending direction of the radiator, and the extending direction of the feeding element is in the same direction as the extending 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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