Electronic equipment

Abstract

The embodiment of the invention provides electronic equipment. The electronic equipment comprises an antenna. The antenna takes a conductive part of a frame of the electronic equipment as a radiator. The antenna further comprises a metal connecting piece, and the first end and the second end of the metal connecting piece are in coupling connection with the radiator and used for feeding electric signals into the radiator.

Description

Technical Field

[0001] The present application relates to the field of wireless communications, and in particular to an electronic device. Background Art

[0002] With the development of the information age, the requirements for data rates are getting higher and higher, and the demand for high-speed over-the-air (OTA) testing of antennas is also increasing. When users hold electronic devices such as mobile phones and tablets, the human body will affect the radiation efficiency of some antennas. For example, when a user holds a smartphone close to his ear to answer a call, or when the smartphone is in the beside head with hand (BHH) state, the radiation efficiency of low-frequency antennas (low frequency can be, for example, frequencies below 1GHz) may decrease by about 8-10dB, and the radiation efficiency of medium- and high-frequency antennas (medium- and high-frequency can be, for example, frequencies above 1GHz) may decrease by about 6-8dB. In the increasingly tight layout space of electronic devices, how to design antennas with better OTA performance is an urgent problem to be solved. Summary of the invention

[0003] An embodiment of the present application provides an electronic device, including an antenna. The antenna uses a conductive part of a frame of the electronic device as a radiator. The antenna also includes a metal connector, a first end and a second end of the metal connector are coupled to the radiator, and is used to feed an electrical signal to the radiator.

[0004] In a first aspect, an electronic device is provided, comprising a frame, the frame comprising a first position, a second position, a third position and a fourth position, the second position being between the first position and the third position, the third position being between the second position and the fourth position, the frame having a first gap at the second position, and the frame having a second gap at the third position; an antenna, the antenna comprising a first radiator, a second radiator, a third radiator, a first feeding circuit and a first metal connector, the first metal connector comprising a first feeding point, the first feeding circuit being coupled to the first feeding point, the first radiator comprising a first connection point , the third radiator includes a second connection point, the first end of the first metal connector is coupled to the first connection point, and the second end of the first metal connector is coupled to the second connection point; wherein, the first radiator is the first frame between the first position and the second position, the second radiator is the second frame between the second position and the third position, and the third radiator is the third frame between the third position and the fourth position; the length L1 of the first frame, the length L2 of the second frame, and the length L3 of the third frame satisfy: L1<L2, L3<L2, and L3×90%≤L1≤L3×110%.

[0005] According to the embodiment of the present application, the first radiator and the third radiator can form a first sub-antenna. Since the lengths of the first radiator and the third radiator are substantially the same, they can form a first resonance together. At the same time, since the second radiator 220 is separated between the first radiator 210 and the third radiator 230 (the distance between the first radiator 210 and the third radiator 230 is relatively far), when the first radiator 210 and the third radiator 230 form a first resonance together, the current density on the floor 201 is relatively low. Since the current density on the floor 201 is relatively low, the intensity of the hot spots on the front side of the electronic device (for example, the side where the display screen is located) and the back side of the electronic device (for example, the side where the back cover is located) is relatively low.

[0006] Among them, since the display screen of the electronic device is provided with a metal layer, the metal layer can block radiation, so the hot spot on the front of the electronic device is lower.

[0007] At the same time, since the second radiator is between the first radiator and the third radiator (the first radiator and the third radiator are far apart), the hot spots generated by the first radiator and the third radiator are more dispersed, which can reduce the intensity of the hot spots.

[0008] Furthermore, the second radiator 220 can be used to form a second sub-antenna for generating a second resonance. Since the frequency of the second resonance generated by the second radiator is low and the second radiator 220 is long, the current (magnetic field) generated by the second radiator is more dispersed, and correspondingly, the hot spot is lower.

[0009] In combination with the first aspect, in some implementations of the first aspect, the second radiator includes a third connection point, and the third end of the first metal connector is coupled to the third connection point.

[0010] According to an embodiment of the present application, the first sub-antenna and the second sub-antenna can be regarded as one antenna, or a single antenna. The first radiator, the second radiator and the third radiator are all fed with electrical signals through the first feeding point on the first metal connector. In some embodiments of the present application, the first feeding point is used to feed electrical signals of the first working frequency band and electrical signals of the second working frequency band, and the first sub-antenna is used to generate the above-mentioned first resonance, and the first resonance is used to support the antenna to work in the first working frequency band; the second sub-antenna is used to generate the above-mentioned second resonance, and the second resonance is used to support the antenna to work in the second working frequency band. The first sub-antenna and the second sub-antenna can be considered to be fed with electrical signals in a combined feeding manner.

[0011] In combination with the first aspect, in some implementations of the first aspect, the antenna includes a second feeding circuit; the second radiator includes a second feeding point, and the second feeding circuit is coupled to the second feeding point.

[0012] According to the embodiment of the present application, the first sub-antenna and the second sub-antenna can be regarded as two antennas, or in other words, the first sub-antenna and the second sub-antenna are independent antennas. The first radiator and the third radiator can be fed with the electrical signal of the first working frequency band through the first feeding point on the first metal connector, and the second radiator can be fed with the electrical signal of the second working frequency band through the second feeding point. The first sub-antenna and the second sub-antenna can be regarded as feeding the electrical signal in a split-feeding manner.

[0013] In combination with the first aspect, in certain implementations of the first aspect, L1 and L3 satisfy: and L3×95%≤L1≤L3×105%.

[0014] In combination with the first aspect, in some implementations of the first aspect, the antenna also includes a first electronic component and a second electronic component; the first electronic component is coupled between the first end of the first metal connector and the first connection point, and the second electronic component is coupled between the second end of the first metal connector and the second connection point.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the first end of the first radiator is opposite to the first end of the second radiator and does not contact each other, and the first end of the third radiator is opposite to the second end of the second radiator and does not contact each other; the first end of the first radiator and the first end of the third radiator are grounded ends, and the second end of the first radiator and the second end of the third radiator are open ends, or the first end of the first radiator and the first end of the third radiator are open ends, and the second end of the first radiator and the second end of the third radiator are grounded ends.

[0016] In combination with the first aspect, in some implementations of the first aspect, the first radiator and the third radiator are used to generate a first resonance; the second radiator is used to generate a second resonance, and the frequency of the resonance point of the second resonance point is lower than the frequency of the resonance point of the first resonance.

[0017] In combination with the first aspect, in some implementations of the first aspect, the first end of the second radiator is a ground end, and the second end of the second radiator is an open end; the L1, the L2, and the L3 satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5, and the ratio of the frequency of the first resonance to the frequency of the second resonance is greater than or equal to 1.5 and less than or equal to 4.5.

[0018] According to an embodiment of the present application, in one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance can be understood as the ratio of the center frequency of the resonance frequency band formed by the first resonance (for example, with S11<-4dB as the limit) to the center frequency of the resonance frequency band formed by the second resonance. In one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance can be understood as the ratio of the center frequency of the working frequency band included in the resonance frequency band formed by the first resonance to the center frequency of the working frequency band included in the resonance frequency band formed by the second resonance.

[0019] In a second aspect, an electronic device is provided, comprising a frame, the frame comprising a first position, a second position, a third position and a fourth position, the second position being between the first position and the third position, the third position being between the second position and the fourth position, the frame being provided with a first slit at the second position, and the frame being provided with a second slit at the third position; an antenna, the antenna comprising a first radiator, a second radiator, and a third radiator, the first end of the first radiator being opposite to the first end of the second radiator and not contacting each other, the first end of the third radiator being opposite to the second end of the second radiator and not contacting each other, the first end of the first radiator and the first end of the third radiator being grounded ends, and the first end and the second end of the second radiator being open ends; wherein the antenna further comprises a first feeding circuit, a first metal connector and a second metal connector, the second radiator comprising a grounding point, a first feeding point, a first connection point and a second connection point, the grounding point and the first A feeding point is located between the first connection point and the second connection point, the second radiator is grounded at the grounding point, the first feeding circuit is coupled to the first feeding point, the first radiator includes a third connection point, the first end of the first metal connector is coupled to the first connection point, the second end of the first metal connector is coupled to the third connection point, the third radiator includes a fourth connection point, the first end of the second metal connector is coupled to the second connection point, and the second end of the second metal connector is coupled to the fourth connection point; the first radiator is a first frame between the first position and the second position, the second radiator is a second frame between the second position and the third position, and the third radiator is a third frame between the third position and the fourth position; the length L1 of the first frame, the length L2 of the second frame, and the length L3 of the third frame satisfy: L1<L2, L3<L2, and L3×90%≤L1≤L3×110%.

[0020] In combination with the second aspect, in some implementations of the second aspect, the grounding point is located in the central area of ​​the second radiator; the second radiator also includes a second feeding point, and the grounding point is located between the first feeding point and the second feeding point; the antenna also includes a third metal connector, the third metal connector includes a third feeding point, the first end of the third metal connector is coupled to the first feeding point, the second end of the third metal connector is coupled to the second feeding point, and the first feeding circuit is coupled to the third feeding point.

[0021] In combination with the second aspect, in some implementations of the second aspect, the third feeding point is located in a central area of ​​the third metal connector.

[0022] In combination with the second aspect, in certain implementations of the second aspect, the length D3 of the third metal connector satisfies the relationship L2: L2×6%≤D3≤L2×25%.

[0023] In combination with the second aspect, in certain implementations of the second aspect, the first connection point is located between the grounding point and the second position; the length L4 of the border between the grounding point and the second position, the L1 and the L2 satisfy: L1×33%≤L4≤L2×33%.

[0024] In combination with the second aspect, in some implementations of the second aspect, the antenna also includes a first electronic component and a second electronic component; the first electronic component is coupled between the first end of the first metal connector and the first connection point, and the second electronic component is coupled between the first end of the second metal connector and the second connection point.

[0025] In combination with the second aspect, in certain implementations of the second aspect, the length D1 of the first metal connector and the L1 satisfy: L1×25%≤D1≤L1, and / or the length D2 of the second metal connector and the L3 satisfy: L3×25%≤D2≤L3.

[0026] According to a third aspect, an electronic device is provided, comprising a frame, the frame comprising a first position, a second position, a third position and a fourth position, the second position being between the first position and the third position, the third position being between the second position and the fourth position, the frame being provided with a first slit at the second position, and the frame being provided with a second slit at the third position; an antenna, the antenna comprising a first radiator, a second radiator and a third radiator, the first end of the first radiator being opposite to the first end of the second radiator and not contacting each other, the first end of the third radiator being opposite to the second end of the second radiator and not contacting each other, the first end of the first radiator and the first end of the third radiator being open ends, and the first end and the second end of the second radiator being open ends; wherein the antenna further comprises a first feeding circuit and a first metal connector, the second radiator comprising a grounding point, a first feeding point and a second feeding point, the grounding point and the first feeding point are located between the first feeding point and the second feeding point, the second radiator is grounded at the grounding point, the first metal connector includes a third feeding point, the first end of the first metal connector is coupled to the first feeding point, the second end of the first metal connector is coupled to the second feeding point, and the first feeding circuit is coupled to the third feeding point; the first radiator is a first frame between the first position and the second position, the second radiator is a second frame between the second position and the third position, and the third radiator is a third frame between the third position and the fourth position; the length L1 of the first frame, the length L2 of the second frame, and the length L3 of the third frame satisfy: L1<L2, L3<L2, and L3×90%≤L1≤L3×110%.

[0027] In combination with the third aspect, in some implementations of the third aspect, the grounding point is located in a central area of ​​the second radiator.

[0028] In combination with the third aspect, in some implementations of the third aspect, the third feeding point is located in a central area of ​​the third metal connector.

[0029] In combination with the third aspect, in certain implementations of the third aspect, the length D3 of the third metal connector satisfies the relationship L2: L2×6%≤D3≤L2×25%.

[0030] In combination with the third aspect, in some implementations of the third aspect, the antenna further includes a first electronic component and a second electronic component;

[0031] The first end of the first electronic component is coupled to the first feeding circuit, the second end of the first electronic component is coupled to the third feeding point, the first end of the second electronic component is coupled between the first feeding circuit and the first end of the first electronic component, and the second end of the second electronic component is grounded. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0033] Figure 2 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0034] Figure 3 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0035] Figure 4 yes Figure 2 FIG. 4 is a diagram of S-parameter simulation results of the antenna 200 shown in FIG.

[0036] Figure 5 yes Figure 2 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown.

[0037] Figure 6 yes Figure 2 The hot spot simulation result of the antenna 200 at 1.72 GHz on the side of the electronic device is shown.

[0038] Figure 7 yes Figure 2 The hot spot simulation result of the antenna 200 at 2.44 GHz on the side of the electronic device is shown.

[0039] Figure 8 yes Figure 2 The hot spot simulation result of the antenna 200 at 1.72 GHz on the back of the electronic device is shown.

[0040] Fig. 9 yes Figure 2 The hot spot simulation result of the antenna 200 at 2.44 GHz on the back of the electronic device is shown.

[0041] Fig.10 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0042] Fig.11 yes Fig.10 The hot spot simulation result of the antenna 200 at 1.84 GHz on the side of the electronic device is shown.

[0043] Fig.12 yes Fig.10The hot spot simulation result of the antenna 200 at 2.5 GHz on the side of the electronic device is shown.

[0044] Fig.13 yes Fig.10 The hot spot simulation result of the antenna 200 at 1.84 GHz on the back of the electronic device is shown.

[0045] Fig.14 yes Fig.10 The hot spot simulation result of the antenna 200 at 2.5 GHz on the back of the electronic device is shown.

[0046] Fig.15 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0047] Fig.16 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0048] Fig.17 yes Fig.15 and Fig.16 S-parameter simulation results of the antenna shown.

[0049] Fig.18 yes Fig.15 Simulation results for the radiation efficiency and system efficiency of the antenna shown.

[0050] Fig.19 yes Fig.15 The current distribution diagram of the antenna 200 at 0.9 GHz is shown.

[0051] Fig. 20 yes Fig.15 The current distribution diagram of the antenna 200 at 1.8 GHz is shown.

[0052] Fig.21 yes Fig.15 The current distribution diagram of the antenna 200 at 2.25 GHz is shown.

[0053] Fig. 22 yes Fig.15 The current distribution diagram of the antenna 200 at 2.7 GHz is shown.

[0054] Fig.23 yes Fig.15 The current distribution diagram of the antenna 200 at 3.16 GHz is shown.

[0055] Fig.24 yes Fig.15 The current distribution diagram of the antenna 200 at 4.39 GHz is shown.

[0056] Fig.25 yes Fig.15The hot spot simulation result of the antenna 200 at 1.8 GHz on the side of the electronic device is shown.

[0057] Fig.26 yes Fig.15 The hot spot simulation result of the antenna 200 at 2.25 GHz on the side of the electronic device is shown.

[0058] Fig. 27 yes Fig.15 The hot spot simulation result of the antenna 200 at 2.7 GHz on the side of the electronic device is shown.

[0059] Fig.28 yes Fig.15 The hot spot simulation result of the antenna 200 at 1.8 GHz on the back of the electronic device is shown.

[0060] Fig.29 yes Fig.15 The hot spot simulation result of the antenna 200 at 2.25 GHz on the back of the electronic device is shown.

[0061] Fig.30 yes Fig.15 The hot spot simulation result of the antenna 200 at 2.7 GHz on the back of the electronic device is shown.

[0062] Fig.31 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0063] Fig.32 yes Fig.31 S-parameter simulation results of the antenna shown.

[0064] Fig.33 yes Fig.31 Simulation results for the radiation efficiency and system efficiency of the antenna shown.

[0065] Fig.34 yes Fig.31 The hot spot simulation result of the antenna 200 at 1.77 GHz on the side of the electronic device is shown.

[0066] Fig.35 yes Fig.31 The hot spot simulation result of the antenna 200 at 2.5 GHz on the side of the electronic device is shown.

[0067] Fig.36 yes Fig.31 The hot spot simulation result of the antenna 200 at 1.77 GHz on the back of the electronic device is shown.

[0068] Fig.37 yes Fig.31 The hot spot simulation result of the antenna 200 at 2.5 GHz on the back of the electronic device is shown.

[0069] Fig.38 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0070] Fig.39 yes Fig.38 S-parameter simulation results of the antenna shown.

[0071] Fig.40 yes Fig.38 Simulation results for the radiation efficiency and system efficiency of the antenna shown.

[0072] Fig.41 yes Fig.38 The current distribution diagram of the antenna 200 at 0.95 GHz is shown.

[0073] Fig.42 yes Fig.38 The current distribution diagram of the antenna 200 at 1.9 GHz is shown.

[0074] Fig.43 yes Fig.38 The current distribution diagram of the antenna 200 at 2.51 GHz is shown.

[0075] Fig.44 yes Fig.38 The current distribution diagram of the antenna 200 at 4.43 GHz is shown.

[0076] Fig.45 yes Fig.38 The hot spot simulation result of the antenna 200 at 1.9 GHz on the side of the electronic device is shown.

[0077] Fig.46 yes Fig.38 The hot spot simulation result of the antenna 200 at 2.51 GHz on the side of the electronic device is shown.

[0078] Fig.47 yes Fig.38 The hot spot simulation result of the antenna 200 at 4.43 GHz on the side of the electronic device is shown.

[0079] Fig.48 yes Fig.38 The hot spot simulation result of the antenna 200 at 1.9 GHz on the back of the electronic device is shown.

[0080] Fig.49 yes Fig.38 The hot spot simulation result of the antenna 200 at 2.51 GHz on the back of the electronic device is shown.

[0081] Fig.50 yes Fig.38 The hot spot simulation result of the antenna 200 at 4.43 GHz on the back of the electronic device is shown.

[0082] Fig.51 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0083] The following explains the terms that may appear in the embodiments of the present application.

[0084] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0085] As used in this application, “in the range of…” includes both end values ​​of the range by default. For example, in the range of 1 to 5, the two values ​​1 and 5 are included.

[0086] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupled connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the connection between different components in the circuit structure through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by coupling between the gaps between two conductive parts to form an equivalent capacitor.

[0087] Component / device: includes at least one of lumped component / device and distributed component / device.

[0088] Lumped component / device: refers to the collective name for all components when the size of the component is much smaller than the wavelength relative to the circuit operating frequency. For the signal, regardless of any time, the component characteristics always remain fixed and are independent of frequency.

[0089] 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.

[0090] Capacitance: It can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitors; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0091] Inductance: It can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive parts.

[0092] Radiator: It is a device in the antenna used to receive / send electromagnetic wave radiation. In some cases, the "antenna" in a narrow sense is understood as a radiator, which converts the waveguide energy from the transmitter into radio waves, or converts radio waves into waveguide energy, which is used to radiate and receive radio waves. The modulated high-frequency current energy (or waveguide energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, and is converted into a certain polarized electromagnetic wave energy by the radiator and radiated in the desired direction. The receiving radiator converts a certain polarized electromagnetic wave energy from a specific direction in space into modulated high-frequency current energy, which is transmitted to the receiver input via the feeder line.

[0093] The radiator may include a conductor with a specific shape and size, such as a linear or sheet shape, etc., and the present application does not limit the specific shape. In one embodiment, the linear radiator may be referred to as a linear antenna. In one embodiment, the linear radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, the linear radiator may be implemented by a bracket conductor, and may also be referred to as a bracket antenna. In one embodiment, the linear radiator, or the radiator of the linear antenna, has a wire diameter (e.g., including thickness and width) much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna generally includes two radiating branches, and each branch is fed by a feeding unit from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted-F antenna because its side view is an inverted F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also known as PIFA, Planar Inverted FAntenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes a circle, a rectangle, a ring, etc., and the present application does not limit the specific shape. The structure of the microstrip antenna is generally composed of a dielectric substrate, a radiator and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0094] The radiator may also include a slot or a slit formed on the conductor, for example, a closed or semi-closed slot or slit formed on a grounded conductor surface. In one embodiment, a slotted or slitted radiator may be referred to as a slot antenna or a slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slit of the slot antenna / slot antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slit may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slit (e.g., an opening is added to a closed slot or slit) may be referred to as an open slot antenna. In some embodiments, the slot shape is a long strip. In some embodiments, the length of the slot is about half a wavelength (e.g., the dielectric wavelength). In some embodiments, the length of the slot is about an integer multiple of the wavelength (e.g., one times the dielectric wavelength). In some embodiments, the slot can be fed by a transmission line connected across one or both sides thereof, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a conductive frame with both ends grounded, which can also be called a frame antenna; in this embodiment, it can be regarded as that the slot antenna or slot antenna includes a linear radiator, which is spaced apart from the floor and grounded at both ends of the radiator, thereby forming a closed or semi-closed slot or slot. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a bracket conductor with both ends grounded, which can also be called a bracket antenna.

[0095] The feed circuit is a combination of all circuits used for receiving and transmitting radio frequency signals. The feed circuit may include a transceiver and an RF front end circuit. In some cases, the "feed circuit" is understood in a narrow sense as a radio frequency chip (RFIC, Radio Frequency Integrated Circuit), and RFIC can be considered to include 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.

[0096] In some embodiments, the electronic device may further include a test socket (or referred to as a radio frequency socket or a radio frequency test socket). The test socket may be used to insert a coaxial cable to test the characteristics of the radio frequency front-end circuit or the radiator of the antenna through the cable. The radio frequency front-end circuit may be considered as a circuit portion coupled between the test socket and the transceiver.

[0097] 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.

[0098] It should be understood that any two of the first / second / …Nth feeding circuits in the present application can share the same transceiver, for example, transmitting signals through a RF channel in a transceiver (for example, a port (pin) of a RF chip); they can also share a RF front-end circuit, for example, processing signals through a switch or amplifier in a RF front-end.

[0099] It should also be understood that two feeding circuits in the first / second / ...Nth feeding circuits in the present application usually correspond to two radio frequency test sockets in the electronic device.

[0100] The matching circuit is a circuit used to adjust the radiation characteristics of the antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. In one embodiment, the matching circuit is coupled between the test socket and the radiator. Generally, the matching circuit is a combination of circuits coupled between the radiator and the floor. In one embodiment, the matching circuit may include a switch and / or an electronic component, and the switch may be an electronic component for switching the coupling connection of the radiator. The matching circuit has the function of impedance matching and / or frequency tuning. Generally, it is considered to be a part of the antenna.

[0101] The grounding structure / feeding structure may include a connector, such as a metal spring, and the radiator is coupled to the floor through the grounding structure / feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure may include a transmission line / feeding line, and the grounding structure may include a grounding line.

[0102] The antenna structure is the same or similar: it can be understood that the structure of the radiator of the first antenna is the same or similar to the structure of the radiator of the second antenna. The structure of the radiator may include the length of the radiator, the position of the grounding point, and the position of the feeding point. It should be understood that the length of the radiator is within 10% (the ratio of the length of the radiator is greater than or equal to 0.9 and less than or equal to 1.1) and can be considered to be the same or similar length; the position of the grounding point or the dead point is within 10% of the radiator (for example, the ratio of the length of the grounding point / feeding point to the end face of an open end is greater than or equal to 0.9 and less than or equal to 1.1). The position of the grounding point / feeding point can be considered to be the same or similar. The structure of the radiator may also include a matching circuit (which may include the topology of the matching circuit, and / or the capacitance or inductance of the electronic components in the matching circuit, etc.), the connection position of the electronic components set between the radiator and the floor and the radiator, and the capacitance or inductance of the electronic components electrically connected to the radiator. It should be understood that the equivalent capacitance or inductance value is within 20% The difference can be considered to be the same or similar electronic components. It should also be understood that the same structure of the matching circuit (the same number of electronic components such as capacitors, inductors, resistors or switches included in the matching circuit, and the same connection method) can be considered as the same or similar matching circuits, and / or the device values ​​of the electronic components in the matching circuit are the same or similar within a difference of 20%. It should also be understood that the same or similar can be understood as the above structure being at least partially the same, or at least partially the same as the mirror image.

[0103] The symmetry of the antenna structure in the embodiments of the present application can be understood as the antenna structure being mirror-identical or similar.

[0104] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of the antenna radiator cannot be narrowly understood as an end point or end portion that is physically disconnected from other radiators, but can also be considered as a point or a section on a continuous radiator. In one embodiment, the "end / point" may include a connection / coupling area on the antenna radiator that is coupled to other conductive structures. For example, the feed end / feeding point may be a coupling area on the antenna radiator that is coupled to the feed structure (for example, an area facing a portion of the feed structure). For another example, the ground end / grounding point may be a connection / coupling area on the antenna radiator that is coupled to the ground structure.

[0105] Open end, closed end: In some embodiments, the open end and the closed end are, for example, relative to whether they are grounded. The closed end is grounded, and the open end is not grounded. In some embodiments, the open end and the closed end are, for example, relative to other conductors. The closed end is electrically connected to other conductors, and the open end is not electrically connected to other conductors. In one embodiment, the open end can also be referred to as a suspended end, a free end, an open end, or an open-circuit end. In one embodiment, the closed end can also be referred to as a grounded end or a short-circuit end. It should be understood that in some embodiments, other conductors can be coupled and connected through the open end to transfer coupling energy (which can be understood as transferring current).

[0106] In some embodiments, the "closed end" can also be understood from the perspective of current distribution. The closed end or the grounded end, etc., can be understood as a point with larger current on the radiator, or as a point with smaller electric field on the radiator. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by coupling electronic devices (for example, capacitors, inductors, etc.) through the closed end. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by opening a gap at or near the closed end (for example, a gap filled with insulating material).

[0107] In some embodiments, the "open end" can also be understood from the perspective of current distribution. The open end or suspended end, etc., can be understood as a point with smaller current on the radiator, or as a point with larger electric field on the radiator. In one embodiment, coupling electronic devices (for example, capacitors, inductors, etc.) through the open end can maintain the current distribution characteristics of the smaller current point / larger electric field point.

[0108] It should be understood that coupling the radiator end at a gap (from the perspective of the structure of the radiator, it is similar to a radiator at an opening of an open end or a suspended end) with electronic devices (for example, capacitors, inductors, etc.) 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.

[0109] The “suspended radiator” mentioned in the embodiments of the present application means that the radiator is not directly connected to the feeder line / feeder branch and / or the grounding line / grounding branch, but is fed and / or grounded through indirect coupling.

[0110] It should be understood that the "suspended" in "suspended end" or "suspended radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the suspended radiator can be, for example, a radiator disposed on the inner surface of the insulating back cover.

[0111] The current same direction / reverse direction mentioned in the embodiments of the present application should be understood as the direction of the main current on the conductor on the same side is the same direction / reverse direction. For example, when stimulating a distributed current in the same direction on a conductor that is bent or annular (for example, the current path is also bent or annular), it should be understood that, for example, the main currents stimulated on the conductors on both sides of the annular conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) are opposite in direction, but they still belong to the definition of the distributed current in the same direction in the present application. In one embodiment, the current same direction on a conductor may refer to the current on the conductor having no reverse point. In one embodiment, the current reverse on a conductor may refer to the current on the conductor having at least one reverse point. In one embodiment, the current same direction on two conductors may refer to the currents on both conductors having no reverse point and flowing in the same direction. In one embodiment, the current reverse on two conductors may refer to the currents on both conductors having no reverse point and flowing in opposite directions. The current same direction / reverse direction on multiple conductors can be understood accordingly.

[0112] Resonance / resonance frequency: The resonance frequency is also called the resonance frequency. The resonance frequency can have a frequency range, that is, the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance point is the center frequency point frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, the antenna / radiator mentioned in this application produces a "first / second... resonance", where the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to the specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0113] 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.

[0114] Communication frequency band / working frequency band: Regardless of the type of antenna, it always works within a certain frequency range (band width). For example, an antenna that supports the B40 frequency band has a working frequency band that includes frequencies in the range of 2300MHz to 2400MHz, or in other words, the working frequency band of the antenna includes the B40 frequency band. The frequency range that meets the index requirements can be regarded as the working frequency band of the antenna.

[0115] The resonant frequency band and the operating frequency band may be the same, or may partially overlap. In one embodiment, one or more resonant frequency bands of the antenna may cover one or more operating frequency bands of the antenna.

[0116] Electrical length: It can refer to the ratio of physical length (ie mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0117]

[0118] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0119] Wavelength: or operating wavelength, which can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, then the operating wavelength can be the wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "operating wavelength" can also refer to the wavelength corresponding to the non-center frequency of the resonant frequency or the operating frequency band.

[0120] It should be understood that the wavelength of the radiation signal in the 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 3×108 m / s. The wavelength of the radiation signal in the medium can be calculated as follows: Among them, ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application generally refers to the dielectric wavelength, which can be the dielectric wavelength corresponding to the center frequency of the resonant frequency, or the dielectric wavelength corresponding to the center frequency of the working frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, the wavelength can be the dielectric wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "dielectric wavelength" may also refer to the dielectric wavelength corresponding to the non-center frequency of the resonant frequency or the working frequency band. For ease of understanding, the dielectric wavelength mentioned in the embodiments of the present application can be simply calculated by the relative dielectric constant of the medium filled on one or more sides of the radiator.

[0121] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0122] Antenna radiation efficiency: refers to the ratio of the power radiated by the antenna into space (i.e. the power of the electromagnetic wave part that is effectively converted) to the active power input to the antenna. Among them, the active power input to the antenna = the input power of the antenna - the loss power; the loss power mainly includes the return loss power and the ohmic loss power of the metal and / or the dielectric loss power. The radiation efficiency is a value that measures the radiation ability of the antenna. Metal loss and dielectric loss are both factors that affect the radiation efficiency.

[0123] Those skilled in the art can understand that efficiency is generally expressed as a percentage, and there is a corresponding conversion relationship between efficiency and dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0124] Antenna pattern: also called radiation pattern. It refers to the graph of the relative field strength (normalized modulus) of the antenna radiation field changing with direction at a certain distance from the antenna. It is usually represented by two mutually perpendicular plane patterns passing through the antenna's maximum radiation direction.

[0125] Antenna radiation patterns usually have multiple radiation beams. The radiation beam with the strongest radiation intensity is called the main lobe, and the remaining radiation beams are called side lobes or side lobes. Among the side lobes, the side lobe in the opposite direction of the main lobe is also called the back lobe.

[0126] Antenna return loss: It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the transmit power of the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the greater the radiation efficiency of the antenna. The larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the radiation efficiency of the antenna.

[0127] Antenna return loss can be represented by the S11 parameter, which is one of the S parameters. S11 represents the reflection coefficient, which can characterize the antenna transmission efficiency. The S11 parameter is usually a negative number. The smaller the S11 parameter is, the smaller the antenna return loss is, and the less energy is reflected back by the antenna itself, which means that more energy actually enters the antenna, and the higher the antenna system efficiency is; the larger the S11 parameter is, the greater the antenna return loss is, and the lower the antenna system efficiency is.

[0128] It should be noted that in engineering, the S11 value is generally -6dB as the standard. When the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or that the antenna has good transmission efficiency.

[0129] Ground (GND): can refer to at least a part of any grounding layer, grounding plate, or grounding metal layer in an electronic device (such as a mobile phone), or at least a part of any combination of any of the above grounding layers, grounding plates, or grounding components, etc. "GND" can be used for grounding components in electronic devices. In one embodiment, "ground" can be a grounding layer of a circuit board of an electronic device, or a grounding plate formed by a frame of an electronic device, or a grounding metal layer formed by a metal film under a screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12 to 14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a routing layer, and the routing layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. can be mounted on or connected to a circuit board; or electrically connected to a wiring layer and / or a ground layer in the circuit board. For example, a radio frequency source is disposed on the wiring layer.

[0130] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material can be any of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. It will be appreciated by those skilled in the art that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0131] Grounding: refers to coupling with the above-mentioned ground / floor through a grounding structure and / or a grounding circuit. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding (or physical ground) at a specific position on the frame through some structural members of the middle frame. In one embodiment, grounding can be achieved through device grounding, such as grounding through devices such as capacitors / inductors / resistors connected in series or in parallel (or device ground).

[0132] The technical solution of the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0133] like Figure 1As shown, the electronic device 10 may include: a cover 13, a display screen / module (display) 15, a printed circuit board (PCB) 17, a middle frame (middle frame) 19 and a rear cover (rear cover) 21. It should be understood that in some embodiments, the cover 13 may be a glass cover, or may be replaced by a cover made of other materials, such as a PET (Polyethylene terephthalate) material cover.

[0134] The cover plate 13 may be disposed closely to the display module 15 , and may be mainly used to protect the display module 15 and prevent dust.

[0135] In one embodiment, the display module 15 may include a liquid crystal display panel (LCD), a light emitting diode (LED) display panel or an organic light emitting semiconductor (OLED) display panel, etc., but the embodiment of the present application does not limit this.

[0136] The middle frame 19 mainly supports the entire device. Figure 1It is shown that PCB17 is arranged between the middle frame 19 and the back cover 21. It should be understood that in one embodiment, PCB17 can also be arranged between the middle frame 19 and the display module 15, and the embodiment of the present application does not limit this. Among them, the printed circuit board PCB17 can adopt a flame retardant material (FR-4) dielectric board, a Rogers dielectric board, a mixed dielectric board of Rogers and FR-4, and so on. Here, FR-4 is a code for a grade of flame retardant material, and the Rogers dielectric board is a high-frequency board. Electronic components, such as radio frequency chips, etc. are carried on PCB17. In one embodiment, a metal layer can be provided on the printed circuit board PCB17. The metal layer can be used for grounding the electronic components carried on the printed circuit board PCB17, and can also be used for grounding other components, such as bracket antennas, frame antennas, etc. The metal layer can be called a floor, a grounding plate, or a grounding layer. In one embodiment, the metal layer can be formed by etching metal on the surface of any layer of the dielectric board in PCB17. In one embodiment, the metal layer for grounding can be provided on the side of the printed circuit board PCB17 close to the middle frame 19. In one embodiment, the edge of the printed circuit board PCB17 can be regarded as the edge of its grounding layer. In one embodiment, the metal middle frame 19 can also be used for grounding the above components. The electronic device 10 can also have other floors / grounding plates / grounding layers, as described above, which will not be repeated here.

[0137] The electronic device 10 may further include a battery (not shown). The battery may be disposed between the middle frame 19 and the back cover 21, or between the middle frame 19 and the display module 15, and the embodiment of the present application does not limit this. In some embodiments, the PCB 17 is divided into a main board and a sub-board, and the battery may be disposed between the main board and the sub-board, wherein the main board may be disposed between the middle frame 19 and the upper edge of the battery, and the sub-board may be disposed between the middle frame 19 and the lower edge of the battery.

[0138] 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 screen 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 screen 15 to help fix the display screen 15.

[0139] In one implementation, the frame 11 made of a conductive material can be directly used as a conductive frame of the electronic device 10, for example, forming the appearance of a metal frame, suitable for a metal industrial design (ID). In one implementation, the outer surface of the frame 11 can be a conductive material, such as a metal material, to form the appearance of a metal frame. In these implementations, the conductive portion of the frame 11 can be used as an antenna radiator of the electronic device 10.

[0140] In another implementation, the outer surface of the frame 11 can also be a non-conductive material, such as plastic, to form the appearance of a non-metallic frame, suitable for non-metallic ID. In one implementation, the inner surface of the frame 11 may include a conductive material, such as a metal material. In this implementation, the conductive portion of the frame 11 can be used as an antenna radiator of the electronic device 10. It should be understood that the radiator (or book, the conductive material on the inner surface) arranged on the inner surface of the frame 11 is arranged in contact with the non-conductive material of the frame 11 to facilitate antenna radiation, and the conductive material and the non-conductive material should be regarded as part of the frame 11.

[0141] The middle frame 19 may include a border 11. The middle frame 19 including the border 11 is an integral part, which can support the electronic devices in the whole machine. The cover plate 13 and the back cover 21 are respectively covered along the upper and lower edges of the border to form a shell or housing (housing) of the electronic device. In one embodiment, the cover plate 13, the back cover 21, the border 11 and / or the middle frame 19 can be collectively referred to as the shell or housing of the electronic device 10. It should be understood that "shell or housing" can be used to refer to part or all of any one of the cover plate 13, the back cover 21, the border 11 or the middle frame 19, or to refer to part or all of any combination of the cover plate 13, the back cover 21, the border 11 or the middle frame 19.

[0142] The frame 11 on the middle frame 19 can at least partially serve as an antenna radiator to receive / transmit radio frequency signals. There can be a gap between this portion of the frame serving as the radiator and other portions of the middle frame 19, thereby ensuring that the antenna radiator has a good radiation environment. In one embodiment, the middle frame 19 can be provided with an aperture at this portion of the frame serving as the radiator to facilitate antenna radiation.

[0143] Alternatively, the frame 11 may not be considered as a part of the middle frame 19. In one embodiment, the frame 11 may be connected to the middle frame 19 and formed integrally. In another embodiment, the frame 11 may include a protrusion extending inward to be connected to the middle frame 19, for example, by means of a shrapnel, a screw, welding, etc. The protrusion of the frame 11 may also be used to receive a feed signal, so that at least a portion of the frame 11 serves as a radiator of the antenna to receive / transmit radio frequency signals. There may be a gap 42 between this portion of the frame that serves as a radiator and the middle frame 30, thereby ensuring that the antenna radiator has a good radiation environment, so that the antenna has a good signal transmission function.

[0144] The back cover 21 may be a back cover made of metal material; or a back cover made of non-conductive material, such as a glass back cover, a plastic back cover, or a back cover made of both conductive and non-conductive materials. In one embodiment, the back cover 21 made of conductive material may replace the middle frame 19 and be integrated with the frame 11 to support the electronic components in the whole device.

[0145] In one embodiment, the middle frame 19 and / or the conductive parts in the back cover 21 can be used as the reference ground of the electronic device 10, wherein the frame 11, PCB 17, etc. of the electronic device can be grounded through electrical connection with the middle frame.

[0146] The antenna of the electronic device 10 can also be arranged in the frame 11. When the frame 11 of the electronic device 10 is a non-conductive material, the antenna radiator can be located in the electronic device 10 and arranged along the frame 11. For example, the antenna radiator is arranged close to the frame 11 to minimize the volume occupied by the antenna radiator and to be closer to the outside of the electronic device 10 to achieve better signal transmission effect. It should be noted that the antenna radiator is arranged close to the frame 11 means that the antenna radiator can be arranged close to the frame 11, or it can be arranged close to the frame 11, for example, there can be a certain small gap between the antenna radiator and the frame 11.

[0147] The antenna of the electronic device 10 may also be disposed in the housing, such as a bracket antenna, a millimeter wave antenna, etc. ( Figure 1 ). The clearance of the antenna disposed in the housing can be obtained by the slits / openings on any one of the middle frame, and / or the frame, and / or the back cover, and / or the display screen, or by the non-conductive gap / aperture formed between any of them. The clearance setting of the antenna can ensure the radiation performance of the antenna. It should be understood that the clearance of the antenna can be a non-conductive area formed by any conductive component in the electronic device 10, and the antenna radiates signals to the external space through the non-conductive area. In one embodiment, the antenna 40 can be in the form of an antenna based on a flexible printed circuit (FPC), an antenna based on laser direct structuring (LDS), or a microstrip disk antenna (MDA). In one embodiment, the antenna can also be a transparent structure embedded in the screen of the electronic device 10, so that the antenna is a transparent antenna unit embedded in the screen of the electronic device 10.

[0148] Figure 1 Only some components of the electronic device 10 are schematically shown, and the actual shapes, sizes and structures of these components are not subject to the present invention. Figure 1 limited.

[0149] It should be understood that in the embodiments of the present application, the surface where the display screen of the electronic device is located can be considered as the front side, the surface where the back cover is located can be considered as the back side, and the surface where the frame is located can be considered as the side side.

[0150] It should be understood that in the embodiments of the present application, it is considered that when a user holds the electronic device (for example, the user holds the electronic device and unlocks it, or for example, when the user holds the electronic device vertically and faces the screen), the orientation of the electronic device has a top, a bottom, a left side, and a right side.

[0151] For the sake of indirectness of discussion, the antenna structures provided in the embodiments of the present application are all wire antennas. In practical applications, they can also be applied to other antenna structures, such as patch antennas, etc., and the embodiments of the present application do not limit this.

[0152] An embodiment of the present application provides an electronic device, including an antenna. The antenna uses a conductive part of a frame of the electronic device as a radiator. The antenna also includes a metal connector, a first end and a second end of the metal connector are coupled to the radiator, and is used to feed an electrical signal to the radiator.

[0153] Figure 2 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0154] like Figure 2 As shown, the electronic device 10 includes a frame 11 and an antenna 200 .

[0155] The frame 11 includes a first position 101, a second position 102, a third position 103 and a fourth position 104 which are arranged in sequence. On the frame, the second position 102 is located between the first position 101 and the third position 103, and the third position 103 is located between the second position 102 and the fourth position 104. The frame 11 is provided with a first gap at the second position 102, and the frame 11 is provided with a second gap at the third position 103. In one embodiment, the appearance surface of the frame 11 is mainly a conductive part (for example, a metal frame), and the first gap and the second gap are both fractures on the frame 11 and are presented on the appearance surface of the frame 11. In one embodiment, the appearance surface of the frame 11 is mainly a non-conductive part (for example, a plastic frame), and the first gap and the second gap are both insulating gaps between the inner conductive parts of the frame 11.

[0156] The antenna 200 includes a first radiator 210, a second radiator 220, a third radiator 230, a first feeding circuit 241, and a first metal connector 251. The first metal connector 251 includes a first feeding point 261, and the first feeding circuit 241 is coupled to the first feeding point 261. The first radiator 210 includes a first connection point 211, and the third radiator 230 includes a second connection point 212. A first end of the first metal connector 251 is coupled to the first connection point 211, and a second end of the first metal connector 251 is coupled to the second connection point 212.

[0157] It should be understood that for the sake of simplicity of discussion, in the embodiments of the present application, the coupling connection is explained by taking electrical connection as an example. In actual production or design, it can also be achieved through indirect coupling, and the embodiments of the present application do not limit this.

[0158] The first radiator 210 is a first frame between the first position 101 and the second position 102. The second radiator 220 is a second frame between the second position 102 and the third position 103. The third radiator 230 is a third frame between the third position 103 and the fourth position 104. It should be understood that "the first radiator 210 is a first frame" can be understood as the first radiator 210 being a conductive part of the first frame; similar descriptions should be understood similarly.

[0159] The length L1 of the border 11 (first border) between the first position 101 and the second position 102, the length L2 of the border between the second position 102 and the third position 103 (second border), and the length L3 of the border between the third position 103 and the fourth position 104 (third border) satisfy: L1<L2, L3<L2, and L3×90%≤L1≤L3×110%.

[0160] In one embodiment, the first radiator 210 and the third radiator 230 may be used to generate a first resonance, and the second radiator 220 may be used to generate a second resonance. The frequency of the resonance point of the second resonance is lower than the frequency of the resonance point of the first resonance.

[0161] It should be understood that the first radiator 210 and the third radiator 230 can be used to form a first sub-antenna. Since the lengths of the first radiator 210 and the third radiator 230 are substantially the same (L3×90%≤L1≤L3×110%), they can form a first resonance together. At the same time, since the second radiator 220 is separated between the first radiator 210 and the third radiator 230 (the distance between the first radiator 210 and the third radiator 230 is relatively far), when the first radiator 210 and the third radiator 230 form a first resonance together, the current density on the floor 201 is relatively low. Since the current density on the floor 201 is relatively low, the intensity of the hot spots on the front side of the electronic device (for example, the side where the display screen is located) and the back side of the electronic device (for example, the side where the back cover is located) is relatively low.

[0162] Among them, hot spots can be understood as parameters related to the electric field, which can be used to show the concentration of energy generated by antenna radiation.

[0163] Furthermore, since the display screen of the electronic device is provided with a metal layer, the metal layer can block radiation, and therefore, the hot spot on the front side of the electronic device is lower.

[0164] At the same time, since the second radiator 220 is between the first radiator 210 and the third radiator 230 (the first radiator 210 and the third radiator 230 are far apart), the hot spots generated by the first radiator 210 and the third radiator 230 are more dispersed, which can reduce the intensity of the hot spots.

[0165] Furthermore, the second radiator 220 can be used to form a second sub-antenna for generating a second resonance. Since the frequency of the second resonance generated by the second radiator 220 is low and the length of the second radiator 220 is long, the current (magnetic field) generated by the second radiator 220 is relatively dispersed, and accordingly, the hot spot is relatively low.

[0166] In one embodiment, the current on the first radiator 210 and the current on the third radiator 230 are opposite.

[0167] It should be understood that the current on the first radiator 210 and the current on the third radiator 230 are opposite, therefore, in the plane where the frame 11 is located (for example, the yoz plane), the current on the first radiator 210 and the current on the third radiator 230 cancel each other out, and the hot spots on the side of the electronic device are more dispersed.

[0168] In one embodiment, the first feeding point 261 is located in the central area of ​​the first metal connector 251 .

[0169] It should be understood that, in one embodiment, the central area can be understood as an area within 5 mm from the center of the first metal connector 251. In one embodiment, the central area can be understood as an area within 2 mm from the center of the first metal connector 251. The length L4 of the first metal connector 251 between the center of the first metal connector 251 and the end of the first end of the first metal connector 251 is approximately the same as the length L5 of the first metal connector 251 between the center of the first metal connector 251 and the end of the second end of the first metal connector 251 (L4×95%≤L5≤L4×105%). In one embodiment, the phases of the electrical signals fed into the first connection point 211 and the second connection point 212 are approximately the same to improve the radiation characteristics of the first sub-antenna.

[0170] In one embodiment, an electrical length D4 between the first feeding point 261 and the first end of the first metal connector 251 and an electrical length D5 between the first feeding point 261 and the second end of the first metal connector 251 satisfy: D4×95%≤D5≤D4×105%.

[0171] It should be understood that the electrical length D4 between the first feeding point 261 and the first end of the first metal connector 251 is approximately the same as the electrical length D5 between the first feeding point 261 and the second end of the first metal connector 251, and the phases of the electrical signals fed into the first connection point 211 and the second connection point 212 are approximately the same, so as to enhance the radiation characteristics of the first sub-antenna.

[0172] In one embodiment, the first metal connector 251 may be a combination of one or more of the following: a radio frequency transmission line such as a cable, a microstrip, or a coaxial line; a metal trace on a dielectric board (e.g., a PCB of an electronic device); a metal trace on a flexible circuit board FPC; a metal part (which may include, for example, a metal wire and / or a metal sheet) on an antenna bracket (e.g., based on laser direct structuring LDS); other insulating parts such as a metal part provided on an insulating back cover of an electronic device (which may include insulating materials such as glass and ceramic); a portion of a conductor in a middle frame (e.g., a strip / linear / sheet conductor separated by partially hollowing out a portion of the middle frame); other conductive connectors such as springs, reeds, conductive foam, etc. For the sake of simplicity, the metal connectors in the embodiments of the present application may be understood accordingly.

[0173] In one embodiment, the length L1 of the first frame and the length L3 of the third frame satisfy: L3×95%≤L1≤L3×105%.

[0174] It should be understood that when the difference between the length L1 of the first frame and the length L3 of the third frame decreases, the symmetry of the first sub-antenna increases, and the radiation characteristics of the first sub-antenna can be improved.

[0175] In one embodiment, the second radiator 220 may further include a third connection point 213 . The third end of the first metal connector 251 is coupled to the third connection point 213 .

[0176] It should be understood that in some embodiments of the present application, the first sub-antenna and the second sub-antenna can be regarded as one antenna, or in other words, a single antenna 200. The first radiator 210, the second radiator 220 and the third radiator 230 are all fed with electrical signals through the first feeding point 261 on the first metal connector 251. In some embodiments of the present application, the first feeding point 261 is used to feed electrical signals of the first working frequency band and electrical signals of the second working frequency band, and the first sub-antenna is used to generate the above-mentioned first resonance, and the first resonance is used to support the antenna 200 to work in the first working frequency band; the second sub-antenna is used to generate the above-mentioned second resonance, and the second resonance is used to support the antenna 200 to work in the second working frequency band. The first sub-antenna and the second sub-antenna can be considered to be fed with electrical signals in a combined feeding manner.

[0177] In one embodiment, the antenna includes a second feed circuit 242, such as Figure 3 The second radiator 220 includes a second feeding point 262 , and the second feeding circuit 242 is coupled to the second feeding point 262 .

[0178] It should be understood that in some embodiments of the present application, the first sub-antenna and the second sub-antenna can be regarded as two antennas, or in other words, the first sub-antenna and the second sub-antenna are independent antennas. The first radiator 210 and the third radiator 230 can be fed with the electrical signal of the first working frequency band through the first feeding point 261 on the first metal connector 251, and the second radiator 220 can be fed with the electrical signal of the second working frequency band through the second feeding point 262. The first sub-antenna and the second sub-antenna can be considered to be fed with electrical signals in a split-feed manner.

[0179] In one embodiment, the operating frequency band of the first sub-antenna may include at least part of the middle band (MB) (1710MHz-2170MHz) and the high band (HB) (2300MHz-2690MHz), and the operating frequency band of the second sub-antenna may include at least part of the low band (LB) (698MHz-960MHz).

[0180] In one embodiment, the operating frequency band of the first sub-antenna may include at least part of the frequency band in sub 6G (for example, N77 and N79 frequency bands), and the operating frequency band of the second sub-antenna may include at least part of the frequency bands in MB and HB.

[0181] In one embodiment, the operating frequency band of the first sub-antenna may include at least part of the frequency band in sub 6G (for example, N77, N79 frequency bands), and the operating frequency band of the second sub-antenna may include at least part of the frequency band in LB.

[0182] In one embodiment, the operating frequency band of the first sub-antenna may include the L1 frequency band of GPS, and the operating frequency band of the second antenna unit may include at least part of the frequency band in LB.

[0183] It should be understood that the first sub-antenna and the second sub-antenna can operate in different frequency bands so that there is good isolation between the first sub-antenna and the second sub-antenna. When the first sub-antenna and the second sub-antenna can be fed in a combined feeding manner, the electrical signals transmitted by the first sub-antenna and the second sub-antenna can be combined by a combiner and fed into the first feeding point 261.

[0184] In one embodiment, the first end of the second radiator 220 is a ground end, and the second end is an open end.

[0185] It should be understood that the embodiment of the present application does not limit the antenna structure formed by the second radiator 220, and is merely described by taking the first end of the second radiator 220 as a ground end and the second end as an open end as an example.

[0186] In one embodiment, when the first end of the second radiator 220 is a ground end and the second end is an open end, the length L1 of the first frame, the length L2 of the second frame, and the length L3 of the third frame satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5.

[0187] In one embodiment, a ratio of the frequency of the first resonance to the frequency of the second resonance is greater than or equal to 1.5 and less than or equal to 4.5.

[0188] It should be understood that, in one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance can be understood as the ratio of the center frequency of the resonance frequency band formed by the first resonance (for example, with S11<-4dB as the limit) to the center frequency of the resonance frequency band formed by the second resonance. In one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance can be understood as the ratio of the center frequency of the working frequency band included in the resonance frequency band formed by the first resonance to the center frequency of the working frequency band included in the resonance frequency band formed by the second resonance. Therefore, in the above embodiment, the first sub-antenna and the second sub-antenna can operate in different frequency bands, which can be understood as the ratio of the center frequencies of the working frequency bands of the two antennas being greater than or equal to 1.5 and less than or equal to 4.5.

[0189] In one embodiment, the antenna 200 may further include a first electronic component 271 and a second electronic component 272. The first electronic component 271 is coupled between the first end of the first metal connector 251 and the first connection point 211. The second electronic component 272 is coupled between the second end of the first metal connector 251 and the second connection point 212.

[0190] It should be understood that the first electronic component 271 and the second electronic component 272 can be used to adjust the boundary conditions at the first connection point 211 and the second connection point 212 so that the first sub-antenna can have better radiation characteristics.

[0191] In one embodiment, the first electronic component 271 and the second electronic component 272 can both be capacitors, inductors or resistors. The capacitance value of the first electronic component 271 and the capacitance value of the second electronic component 272 can be substantially the same (the difference between the capacitance values ​​is within 15%), or the inductance value of the first electronic component 271 and the inductance value of the second electronic component 272 can be substantially the same (the difference between the inductance values ​​is within 15%), so that the first sub-antenna has good symmetry and improves its radiation performance.

[0192] In one embodiment, the antenna 200 may further include a third electronic component 273. The third electronic component 273 is coupled between the third end of the first metal connector 251 and the third connection point 213. Figure 2 Alternatively, the third electronic component 273 is coupled between the second feeding circuit 242 and the second feeding point 262, as shown in FIG. Figure 3 shown.

[0193] It should be understood that the third electronic component 273 can be used to adjust the boundary conditions at the third connection point 213 (or the second feeding point 262) so that the second sub-antenna can have better radiation characteristics.

[0194] In one embodiment, the first end of the first radiator 210 is opposite to the first end of the second radiator 220 and does not contact each other, and the first end of the third radiator 230 is opposite to the second end of the second radiator 220 and does not contact each other. In one embodiment, at least a portion of the first radiator 210 and at least a portion of the second radiator 220 extend in a collinear manner. In one embodiment, at least a portion of the second radiator 220 and at least a portion of the third radiator 230 extend in a collinear manner. In one embodiment, at least a portion of the first radiator 210 and the second radiator 220 and the third radiator 230 extend in a collinear manner. In one embodiment, the first end of the first radiator 210 and the first end of the third radiator 230 are grounded ends, and the second end of the first radiator 210 and the second end of the third radiator 230 are open ends. In one embodiment, the first end of the first radiator 210 and the first end of the third radiator 230 are open ends, and the second end of the first radiator 210 and the second end of the third radiator 230 are grounded ends.

[0195] The collinear extension of A and B can be understood as A and B both extending along the first straight line, for example, the extension direction of A and the extension direction of B are both located on the first straight line. In an electronic device, the collinear extension between the radiators, which are both partially framed, can be understood as being located on the same side of the frame.

[0196] It should be understood that the antenna structure formed by the first radiator 210 is the same as or similar to the antenna structure formed by the third radiator 230 (the grounded end and the open end are symmetrical along the virtual axis of the second radiator 220, the distance between the ground point on the first radiator 210 and the corresponding end is substantially the same as the distance between the ground point on the third radiator 230 and the corresponding end, and the lengths of the second radiators 220 on both sides of the virtual axis are the same), so that the first radiator 210 and the third radiator 230 can jointly generate the first resonance. For the sake of simplicity in the discussion, in the embodiment of the present application, only the first end of the first radiator 210 and the first end of the third radiator 230 are grounded ends, and the second end of the first radiator 210 and the second end of the third radiator 230 are open ends are used as examples for description.

[0197] In one embodiment, the first connection point 211 is located at a first end of the first radiator 210 , and the second connection point 212 is located at a first end of the third radiator 230 .

[0198] The first metal connector 251 further includes a first matching point 281 and a second matching point 282. On the first metal connector 251, the first feeding point 261 is located between the first matching point 281 and the second matching point 282.

[0199] The antenna 200 may further include a fourth electronic component 274, a fifth electronic component 275, a sixth electronic component 276, and a seventh electronic component 277. The first end of the fourth electronic component 274 and the first end of the fifth electronic component 275 are coupled to the first matching point 281, and the second end of the fourth electronic component 274 and the second end of the fifth electronic component 275 are grounded. The first end of the sixth electronic component 276 and the first end of the seventh electronic component 277 are coupled to the second matching point 282, and the first end of the sixth electronic component 276 and the second end of the seventh electronic component 277 are grounded. The first end of the first radiator 210 is grounded through the fourth electronic component 274 and the fifth electronic component 275. The first end of the third radiator 230 is grounded through the sixth electronic component 276 and the seventh electronic component 277.

[0200] It should be understood that the fourth electronic component 274, the fifth electronic component 275, the sixth electronic component 276 and the seventh electronic component 277 can be used to expand the working bandwidth of the first sub-antenna. In one embodiment, the first sub-antenna can be used to generate the first resonance and the third resonance. The fourth electronic component 274, the fifth electronic component 275, the sixth electronic component 276 and the seventh electronic component 277 can provide two different current paths for the first sub-antenna to generate resonance, thereby generating the first resonance and the third resonance. When the first sub-antenna generates the first resonance, the current on the first radiator 210 is electrically connected to the floor 201 through the fourth electronic component 274, and the current on the third radiator 230 is electrically connected to the floor through the sixth electronic component 276. When the first sub-antenna generates the third resonance, the current on the first radiator 210 is electrically connected to the floor 201 through the fifth electronic component 275, and the current on the third radiator 230 is electrically connected to the floor through the seventh electronic component 277.

[0201] In one embodiment, at the resonance point of the first resonance and the resonance point of the third resonance, the current on the first radiator 210 and the current on the third radiator 230 are still in opposite directions.

[0202] In one embodiment, the fourth electronic component 274 and the sixth electronic component 276 (or, the fifth electronic component 275 and the seventh electronic component 277) can both be capacitors, inductors or resistors. The capacitance value of the fourth electronic component 274 and the capacitance value of the sixth electronic component 276 (or, the capacitance value of the fifth electronic component 275 and the capacitance value of the seventh electronic component 277) can be substantially the same (the difference between the capacitance values ​​is within 15%), or, the inductance value of the fourth electronic component 274 and the inductance value of the sixth electronic component 276 (or, the inductance value of the fifth electronic component 275 and the inductance value of the seventh electronic component 277) can be substantially the same (the difference between the inductance values ​​is within 15%), so that the first sub-antenna has good symmetry and improves its radiation performance.

[0203] In one embodiment, the electrical length of the first radiator 210 is one quarter of the first wavelength, and the first wavelength is the wavelength corresponding to the first resonance. In one embodiment, the electrical length of the third radiator 230 is one quarter of the first wavelength. It should be understood that when the first sub-antenna only generates the first resonance, the wavelength corresponding to the first resonance can be understood as the wavelength corresponding to the frequency of the resonance point of the first resonance, or the wavelength corresponding to the center frequency of the resonance frequency band of the first resonance. When the first sub-antenna generates the first resonance and the third resonance, the wavelength corresponding to the first resonance can be understood as the wavelength corresponding to the center frequency between the resonance point of the first resonance and the resonance point of the third resonance.

[0204] In one embodiment, the length of the first metal connector 251 between the first matching point 281 and the first end of the first metal connector 251 is less than half of the length L1 of the frame 11 between the first position 101 and the second position 102. The length of the first metal connector 251 between the second matching point 282 and the second end of the first metal connector 251 is less than half of the length L3 of the frame 11 between the third position 103 and the fourth position 104. The length of the first metal connector 251 between the first matching point 281 and the first end of the first metal connector 251 can be understood as the length of the first metal connector 251 between the first matching point 281 and the end of the first end of the first metal connector 251, and the length of the first metal connector 251 between the second matching point 282 and the second end of the first metal connector 251 can also be understood accordingly.

[0205] It should be understood that the first radiator 210 and the third radiator 230 may form a structure of an IFA.

[0206] In one embodiment, the antenna 200 may further include a first switch and a second switch. The first switch may be connected in series to the ground path of the fourth electronic component 274, and the second switch may be connected in series to the ground path of the sixth electronic component 276. The first switch and the second switch may be used to switch the resonant frequency of the first sub-antenna.

[0207] In one embodiment, the antenna 200 may further include a third switch. The third switch may be connected in series to the ground path of the first feed point 261. The third switch may be used to switch the electronic component electrically connected to the first feed point 261, thereby switching the resonant frequency of the first sub-antenna or the second sub-antenna.

[0208] It should be understood that the above only takes the example of two different switching sub-antenna resonant frequencies as an example. In actual applications, switches can also be added at other locations to achieve the purpose of switching the resonant frequency, for example, between the open end of the radiator and the floor. The embodiments of the present application do not limit this.

[0209] Figure 4 and Figure 5 yes Figure 2 The simulation results of the antenna 200 in the electronic device 10 are shown. Figure 4 yes Figure 2 FIG. 4 is a diagram of S-parameter simulation results of the antenna 200 shown in FIG. Figure 5 yes Figure 2 The simulation results of the radiation efficiency and system efficiency of the antenna 200 are shown.

[0210] It should be understood that for the sake of simplicity of discussion, the embodiments of the present application only take L1=L3=13mm, L2=60mm, the width of the first gap and the second gap is 2mm, the capacitance value of the first electronic component and the second electronic component is 6.8pF, the resistance value of the third electronic component is 0ohm, the resistance value of the fourth electronic component and the sixth electronic component is 0ohm, and the capacitance value of the fifth electronic component and the seventh electronic component is 2.2pF as an example for illustration, and adjustments will be made in actual production or design.

[0211] like Figure 4 As shown, the antenna can resonate near 0.9 GHz, near 1.7 GHz, and near 2.4 GHz.

[0212] The resonance generated near 0.9 GHz may correspond to the second resonance generated by the second radiator. The resonance generated near 1.7 GHz may correspond to the first resonance generated by the first radiator and the third radiator through the fourth electronic component and the sixth electronic component. The resonance generated near 2.4 GHz may correspond to the third resonance generated by the fifth electronic component and the seventh electronic component.

[0213] like Figure 5 As shown, with S11<-5dB as the limit, the antenna has good radiation efficiency and system efficiency in the resonance frequency band of the first resonance, the resonance frequency band of the second resonance, and the resonance frequency band of the third resonance.

[0214] Figures 6 to 9 yes Figure 2 The hot spot simulation result of the antenna 200 in the electronic device 10 is shown. Figure 6 yes Figure 2 The hot spot simulation result of the antenna 200 at 1.72 GHz on the side of the electronic device is shown. Figure 7 yes Figure 2 The hot spot simulation result of the antenna 200 at 2.44 GHz on the side of the electronic device is shown. Figure 8 yes Figure 2 The hot spot simulation result of the antenna 200 at 1.72 GHz on the back of the electronic device is shown. Fig. 9 yes Figure 2 The hot spot simulation result of the antenna 200 at 2.44 GHz on the back of the electronic device is shown.

[0215] It should be understood that in the multiple hotspot simulation results provided in the embodiments of the present application, the gray parts are partial structures of the electronic device, which are used to present the antenna structure in the embodiments of the present application, but are not used to limit the area or location where the antenna structure is set in the electronic device; the black plane is a plane 5 mm away from the electronic device, so as to present the hotspot area distribution related to the electric field generated in this area when the antenna in the embodiments of the present application is working.

[0216] The hot spots on the side of the electronic device are mainly generated by the current on the frame. When the first radiator and the third radiator resonate together, since the first radiator and the third radiator are far apart and the current on the first radiator is in opposite directions, the hot spots generated by the current on the first radiator and the third radiator are relatively dispersed, making the antenna have a low hot spot (low hot spot intensity) characteristic, such as Figure 6 and Figure 7 shown.

[0217] The hot spot on the back of the electronic device is mainly generated by the current on the floor. When the first radiator and the third radiator resonate together, due to the long distance between the first radiator and the third radiator, the current density on the floor is low. At 5mm from the back cover of the electronic device, the hot spot is evenly distributed (there may be multiple hot spots), making the antenna have low hot spot (low hot spot intensity) characteristics, such as Figure 8 and Fig. 9 shown.

[0218] Fig.10 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0219] like Fig.10 As shown, the length of the frame 11 between the ground point of the first end of the first radiator 210 and the first connection point 211 is greater than half of the length L1 of the first frame. The length of the frame 11 between the ground point of the first end of the third radiator 230 and the second connection point 212 is greater than half of the length L3 of the third frame.

[0220] It should be understood that the first radiator 210 and the third radiator 230 may form a left-hand antenna structure. The left-hand antenna may be, for example, an antenna conforming to a composite right and left hand (CRLH) transmission line structure.

[0221] Fig.10 The antenna 200 is shown with Figure 2 The difference between the antenna 200 shown is that the first radiator 210 and the third radiator 230 can form different antenna structures. Figure 2In the antenna 200 shown in FIG. 1 , the first radiator 210 and the third radiator 230 may form an IFA structure. Fig.10 In the antenna 200 shown, the first radiator 210 and the third radiator 230 may form a CRLH structure. Fig.10 In the antenna 200 shown, the antenna structure formed by the first radiator 210 and the antenna structure formed by the third radiator 230 are substantially symmetrical.

[0222] Figures 11 to 14 yes Fig.10 The hot spot simulation result of the antenna 200 in the electronic device 10 is shown. Fig.11 yes Fig.10 The hot spot simulation result of the antenna 200 at 1.84 GHz on the side of the electronic device is shown. Fig.12 yes Fig.10 The hot spot simulation result of the antenna 200 at 2.5 GHz on the side of the electronic device is shown. Fig.13 yes Fig.10 The hot spot simulation result of the antenna 200 at 1.84 GHz on the back of the electronic device is shown. Fig.14 yes Fig.10 The hot spot simulation result of the antenna 200 at 2.5 GHz on the back of the electronic device is shown.

[0223] like Fig.11 and Fig.12 As shown, when the first radiator and the third radiator resonate together, there are two hot spots at the resonance point of the first resonance (1.84GHz) and the resonance point of the third resonance (2.5GHz) on the side of the electronic device 5mm away from the frame, which disperses the intensity of the hot spot generated by the antenna and makes the antenna have a low hot spot (low hot spot intensity) characteristic.

[0224] like Fig.13 As shown, when the first radiator and the third radiator resonate together, at the resonance point of the first resonance (1.84GHz), 5mm away from the back cover on the back of the electronic device, the hotspot distribution is relatively uniform, and the single hotspot is dispersed, making the antenna have a low hotspot (low hotspot intensity) characteristic.

[0225] like Fig.14 As shown, when the first radiator and the third radiator resonate together, at the resonance point of the third resonance (2.5GHz), there are two hot spots on the back of the electronic device 5mm away from the back cover, which disperses the hot spots generated by the antenna and makes the antenna have a low hot spot (low hot spot intensity) characteristic.

[0226] Fig.15 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0227] like Fig.15As shown, the electronic device 10 includes a conductive frame 11 and an antenna 200 .

[0228] The frame 11 includes a first position 101, a second position 102, a third position 103 and a fourth position 104 which are arranged in sequence. The second position 102 is located between the first position 101 and the third position 103, and the third position 103 is located between the second position 102 and the fourth position 104. The frame 11 is provided with a first gap at the second position 102, and a second gap at the third position 103.

[0229] The antenna 200 includes a first radiator 210, a second radiator 220, and a third radiator 230. The first end of the first radiator 210 is opposite to the first end of the second radiator 220 and does not contact each other. The first end of the third radiator 230 is opposite to the second end of the second radiator 220 and does not contact each other. The first end of the first radiator 210 and the first end of the third radiator 230 are grounded ends, and the first end of the first radiator 210 and the first end of the third radiator 230 are open ends. The first end and the second end of the second radiator 220 are open ends.

[0230] The antenna 200 further includes a first feeding circuit 241 , a first metal connection member 251 , and a second metal connection member 252 .

[0231] The second radiator 220 includes a ground point 221, a first feeding point 261, a first connection point 211, and a second connection point 212. The ground point 221 and the first feeding point 261 are located between the first connection point 211 and the second connection point 212. The second radiator 220 is grounded at the ground point 221. The first feeding circuit 241 is coupled to the first feeding point 261.

[0232] The first radiator 210 includes a third connection point 213 , a first end of the first metal connection member 251 is coupled to the first connection point 211 , and a second end of the first metal connection member 251 is coupled to the third connection point 213 .

[0233] It should be understood that the third connection point 213 and the grounding point of the first end of the first radiator 210 may be the same or different. In one embodiment, the third connection point 213 and the grounding point of the first end of the first radiator 210 may be the same position on the first radiator. In this case, an electronic component may be electrically connected between the grounding point of the first end of the first radiator 210 and the floor 201. For example, the electronic component may be an inductor so that the first metal connector 251 is directly electrically connected to the floor 201. In this case, the first radiator 210 may also be considered as an IFA structure. Similarly, the fourth connection point 214 described below and the grounding point of the first end of the third radiator 230 may also be understood accordingly. Similarly, the first / second / … / Nth connection points on the radiator in the present application may be the same or different points, and the present application does not limit this.

[0234] The third radiator 230 includes a fourth connection point 214 , a first end of the second metal connection member 252 is coupled to the second connection point 212 , and a second end of the second metal connection member 252 is coupled to the fourth connection point 214 .

[0235] The first radiator 210 is a first frame between the first position 101 and the second position 102. The second radiator 220 is a second frame between the second position 102 and the third position 103. The third radiator 230 is a third frame between the third position 103 and the fourth position 104.

[0236] The length L1 of the border 11 (first border) between the first position 101 and the second position 102, the length L2 of the border between the second position 102 and the third position 103 (second border), and the length L3 of the border between the third position 103 and the fourth position 104 (third border) satisfy: L1<L2, L3<L2, and L3×90%≤L1≤L3×110%.

[0237] It should be understood that Fig.15 The antenna 200 is shown with Figure 2 The difference between the antenna 200 shown in the figure lies in the way in which the first radiator 210 and the third radiator 230 feed the electrical signal and the antenna structure formed by the second radiator. Figure 2 In the antenna 200 shown, the first metal connector 251 is used to feed electrical signals to the first radiator 210 and the third radiator 230, so that the first radiator 210 and the third radiator 230 resonate together. Fig.15 In the antenna 200 shown, the second radiator 220 is used as a transmission line to feed electrical signals to the first radiator 210 and the third radiator 230. Fig.15 In the antenna 200 shown, the second radiator 220 forms a T-shaped antenna structure.

[0238] For the sake of brevity, Fig.15 The antenna 200 is shown with Figure 2 Similar parts of the antenna 200 shown are not described one by one, for example, the lengths of the first radiator 210, the second radiator 220 and the third radiator 230, and the proportional relationship between the lengths of the radiators (for example, the length L1 of the first frame and the length L3 of the third frame satisfy: L3×95%≤L1≤L3×105%); the first radiator 210 and the third radiator 230 are used to generate a first resonance, and the second radiator 220 is used to generate a second resonance, wherein the frequency difference relationship between the first resonance and the second resonance can be the same as Figure 2 The same as shown in the antenna 200 shown in the figure; the relationship between the working frequency bands of the first sub-antenna formed by the first radiator 210 and the third radiator 230 and the second sub-antenna formed by the second radiator 220, etc. For another example, when the first end of the second radiator 220 is a grounded end and the second end is an open end, the length L1 of the first frame, the length L2 of the second frame, and the length L3 of the third frame satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5. In one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance is greater than or equal to 1.5 and less than or equal to 4.5.

[0239] exist Fig.15 In the antenna 200 shown, the antenna structure formed by the first radiator 210 and the antenna structure formed by the third radiator 230 are substantially symmetrical.

[0240] At the same time, the first metal connector 251 and the second metal connector 252 can better excite the first radiator 210 and the third radiator 230, achieve impedance matching of the first radiator 210 and the third radiator 230, and provide two different current paths, thereby generating two resonances to expand the working bandwidth of the antenna. In one embodiment, the two current paths can pass through the metal connector and the grounding point of the radiator respectively, thereby generating two resonances. At the resonance points of the two resonances, the current on the first radiator 210 and the current on the third radiator 230 are still in opposite directions.

[0241] Furthermore, the first metal connector 251 and the second metal connector 252 can also increase the radiation aperture of the second radiator 220. When the radiation apertures are the same, the size of the second radiator 220 can be reduced to achieve miniaturization of the antenna 200.

[0242] In one embodiment, the antenna 200 further includes a first electronic component 271 and a second electronic component 272. The first electronic component 271 is coupled between the first end of the first metal connector 251 and the first connection point 211. The second electronic component 272 is coupled between the first end of the second metal connector 252 and the second connection point 212.

[0243] It should be understood that the first electronic component 271 and the second electronic component 272 can be used to adjust the impedance matching of the first radiator 210 and the third radiator 230, and expand the working bandwidth of the antenna 200. At the same time, the first electronic component 271 and the second electronic component 272 can also be used to change the loading characteristics of the second radiator 220 to achieve miniaturization of the antenna 200.

[0244] In one embodiment, the first electronic component 271 and the second electronic component 272 can both be capacitors. The capacitance value of the first electronic component 271 and the capacitance value of the second electronic component 272 can be substantially the same (the difference in capacitance value is within 15%), so that the antenna 200 has good symmetry and improves its radiation performance.

[0245] In one embodiment, the grounding point 221 may be located in the central area of ​​the second radiator 220, so that the second radiator 220 forms a symmetrical T-shaped antenna structure. The central area of ​​the second radiator 220 may be understood as an area within 5 mm from the center of the second radiator 220, and the lengths of the second radiators 220 on both sides of the center are the same. In one embodiment, the central area may be understood as an area within 2 mm from the center of the second radiator 220.

[0246] In one embodiment, the second radiator 220 further includes a second feeding point 262. The grounding point 221 is located between the first feeding point 261 and the second feeding point 262. The antenna 200 may further include a third metal connector 253, which includes a third feeding point 263. A first end of the third metal connector 253 is coupled to the first feeding point 261, and a second end of the third metal connector 253 is coupled to the second feeding point. The first feeding circuit 241 is coupled to the third feeding point 263.

[0247] It should be understood that the first feeding circuit 241 can feed an electrical signal into the first feeding point 261 and the second feeding point 262 in a symmetrical feeding manner so that the current on the second radiator 220 is reversed on both sides of the grounding point 221. In the plane where the frame 11 is located (for example, the yoz plane), the reverse currents cancel each other out, thereby reducing the hot spots generated on the side of the electronic device 10.

[0248] In one embodiment, the third feeding point 263 is located in the central area of ​​the third metal connector 253. The central area of ​​the third metal connector 253 can be understood as an area within 5 mm from the center of the third metal connector 253, and the lengths of the third metal connectors 253 on both sides of the center are the same. In one embodiment, the central area can be understood as an area within 2 mm from the center of the third metal connector 253.

[0249] It should be understood that when the third feeding point 263 is located in the central area of ​​the third metal connector 253, the phase of the electrical signal fed into the first feeding point 261 is the same as the phase of the electrical signal fed into the second feeding point 262, which can better offset the reverse current on the second radiator 220 to reduce the hot spots generated on the side of the electronic device 10.

[0250] In one embodiment, the distance between the ground point 221 and the first feeding point 261 is the same as the distance between the ground point 221 and the second feeding point 262 , and the first feeding point 261 and the second feeding point 262 are symmetrical along the ground point 221 .

[0251] It should be understood that with the increase in structural symmetry, the antenna 200 can have better radiation performance.

[0252] In one embodiment, the length D1 of the first metal connector 251 and the length L1 of the frame 11 between the first position 101 and the second position 102 satisfy: L1×25%≤D1≤L1. In one embodiment, the length D2 of the second metal connector 252 and the length L3 of the frame between the third position 103 and the fourth position 104 satisfy: L3×20%≤D2≤L3.

[0253] In one embodiment, the length D1 of the first metal connector 251 and the length L1 of the frame 11 between the first position 101 and the second position 102 satisfy: D1≤L1×66% (one third of L1). In one embodiment, the length D2 of the second metal connector 252 and the length L3 of the frame between the third position 103 and the fourth position 104 satisfy: D2≤L3×66% (one third of L3).

[0254] In one embodiment, the length D3 of the third metal connector 253 and the length L2 of the frame between the second position 102 and the third position 103 satisfy: L2×6% (one fifteenth of L2)≤D3≤L2×25%.

[0255] In one embodiment, the length D3 of the third metal connector 253 and the length L2 of the frame between the second position 102 and the third position 103 satisfy: L2×10%≤D3≤L2×20%.

[0256] It should be understood that Fig.15 In the antenna 200 shown, the length of the metal connector is relatively short, which is conducive to miniaturization of the antenna 200 and is more suitable for the increasingly tight internal space of electronic devices.

[0257] Fig.16 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0258] like Fig.16 As shown, the electronic device 10 includes an antenna 300 .

[0259] It should be understood that the antenna 300 and Fig.15 The antenna 200 shown differs only in that it does not include the first metal connector and the second metal connector.

[0260] exist Fig.15 In the antenna 200 shown, the antenna structure formed by the first radiator 210 and the antenna structure formed by the third radiator 230 are substantially symmetrical.

[0261] Fig.17 and Fig.18 yes Fig.15 and Fig.16 The simulation results of the antenna in the electronic device 10 are shown. Fig.17 yes Fig.15 and Fig.16 S-parameter simulation results of the antenna shown. Fig.18 yes Fig.15 Simulation results for the radiation efficiency and system efficiency of the antenna shown.

[0262] It should be understood that for the sake of simplicity, the embodiment of the present application only uses L1=L3=14.5mm, L2=60mm, and the capacitance value of the first electronic component and the second electronic component is 0.5pF as an example for explanation, and adjustments will be made in actual production or design.

[0263] like Fig.17 As shown, the antenna 200 can resonate at around 0.9 GHz, around 1.8 GHz, around 2.25 GHz, around 2.7 GHz, around 3.16 GHz, and around 4.39 GHz.

[0264] Since the first metal connector and the second metal connector can better excite the first radiator and the third radiator, impedance matching of the first radiator and the third radiator is achieved to excite more working modes. Therefore, in the 1.5 GHz to 4 GHz frequency band, the antenna 200 can generate multiple resonances, and the working bandwidth of the antenna 200 is much larger than the working bandwidth of the antenna 300. Fig.17 shown.

[0265] In addition, the first metal connector and the second metal connector can also increase the radiation aperture of the second radiator. Therefore, when the size of the second radiator is the same, the resonant frequency of the low frequency band of the antenna 200 is around 0.9 GHz, and the resonant frequency of the low frequency band of the antenna 300 is around 1.1 GHz. Fig.17 When the resonant frequencies in the low frequency band are the same, the size of the antenna 200 is smaller than that of the antenna 300 .

[0266] like Fig.18 As shown, in the resonant frequency band, the antenna 200 has good radiation efficiency and system efficiency.

[0267] Figures 19 to 24 yes Fig.15 The current distribution diagram of the antenna 200 in the electronic device 10 is shown. Fig.19 yes Fig.15 The current distribution diagram of the antenna 200 at 0.9 GHz is shown. Fig. 20 yes Fig.15 The current distribution diagram of the antenna 200 at 1.8 GHz is shown.

[0268] Fig.21 yes Fig.15 The current distribution diagram of the antenna 200 at 2.25 GHz is shown. Fig. 22 yes Fig.15 The current distribution diagram of the antenna 200 at 2.7 GHz is shown. Fig.23 yes Fig.15 The current distribution diagram of the antenna 200 at 3.16 GHz is shown. Fig.24 yes Fig.15 The current distribution diagram of the antenna 200 at 4.39 GHz is shown.

[0269] like Figures 19 to 24 As shown in the current distribution diagram, the current on the second radiator is opposite on both sides of the grounding point, and the current on the first radiator and the current on the third radiator are opposite. Therefore, in the plane where the frame is located (for example, the yoz plane), the opposite currents cancel each other out, reducing the hot spots generated on the side of the electronic device.

[0270] like Fig.19 and Fig.24 As shown, the resonances generated near 0.9 GHz and 4.39 GHz are mainly generated by the second radiator. The resonance generated near 0.9 GHz is generated by the entire second radiator. The resonance generated near 4.39 GHz is generated by the second radiator between the first feeding point and the second position and the second radiator between the second feeding point and the third position.

[0271] like Fig. 20 As shown, resonance occurs near 1.8 GHz, and the second radiator is used as a transmission line to feed electrical signals to the first radiator and the third radiator, thereby causing the first radiator and the third radiator to resonate.

[0272] like Fig.21 and Fig.23As shown, the first radiator, the second radiator and the third radiator all generate resonance. It should be understood that since the second radiator also generates radiation, in this case, the second radiator does not act as a transmission line, but as a radiator, and its loss is greatly reduced, effectively improving the efficiency of the antenna.

[0273] like Fig. 22 As shown, on both sides of the grounding point, the currents show a distribution pattern of a three-quarter wavelength mode. Therefore, the first radiator, the second radiator and the third radiator can work together in a two-three-quarter wavelength mode to generate resonance.

[0274] Figures 25 to 30 yes Fig.15 The hot spot simulation result of the antenna 200 in the electronic device 10 is shown. Fig.25 yes Fig.15 The hot spot simulation result of the antenna 200 at 1.8 GHz on the side of the electronic device is shown. Fig.26 yes Fig.15 The hot spot simulation result of the antenna 200 at 2.25 GHz on the side of the electronic device is shown. Fig. 27 yes Fig.15 The hot spot simulation result of the antenna 200 at 2.7 GHz on the side of the electronic device is shown. Fig.28 yes Fig.15 The hot spot simulation result of the antenna 200 at 1.8 GHz on the back of the electronic device is shown. Fig.29 yes Fig.15 The hot spot simulation result of the antenna 200 at 2.25 GHz on the back of the electronic device is shown. Fig.30 yes Fig.15 The hot spot simulation result of the antenna 200 at 2.7 GHz on the back of the electronic device is shown.

[0275] like Fig.25 , Fig.26 and Fig. 27 As shown, when the antenna resonates, at the resonance points (1.8 GHz, 2.25 GHz and 2.7 GHz), there are at least two hot spots in the area 5 mm away from the frame on the side of the electronic device, which disperses the hot spots generated by the antenna and makes the antenna have a low hot spot (low hot spot intensity) characteristic.

[0276] like Fig.28 As shown, when the antenna resonates, at the resonance point (1.8GHz), the hot spots are evenly distributed in the area 5mm away from the back cover of the electronic device, and the intensity of a single hot spot is dispersed, making the antenna have a low hot spot (low hot spot intensity) characteristic.

[0277] like Fig.29 and Fig.30As shown, when the antenna resonates, at the resonance points (2.25GHz and 2.7GHz), the back of the electronic device, 5mm away from the back cover, has two hot spots, which disperse the hot spots generated by the antenna and make the antenna have a low hot spot (low hot spot intensity) characteristic.

[0278] Fig.31 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0279] like Fig.31 As shown, the first connection point 211 is located between the grounding point 221 and the second position 102. The length L6 of the frame between the grounding point 221 and the second position 102, the length L1 of the first frame and the length L2 of the second frame satisfy: L1×33%≤L6≤L2×33%.

[0280] Fig.31 The antenna 200 is shown with Fig.15 The difference between the antenna 200 shown is only that the second radiator 220 can form a different antenna structure. Fig.15 In the antenna 200 shown in the figure, the second radiator 220 can form a symmetrical T-shaped antenna structure. Fig.31 In the antenna 200 shown, the second radiator 220 can form an asymmetric T-shaped antenna structure, and there is no need to set a third metal connector, and its feeding structure is simpler.

[0281] For the sake of brevity, Fig.31 The antenna 200 is shown with Figure 2 Similar parts of the antenna 200 shown are not described one by one, for example, the lengths of the first radiator 210, the second radiator 220 and the third radiator 230, and the proportional relationship between the lengths of the radiators (for example, the length L1 of the first frame and the length L3 of the third frame satisfy: L3×95%≤L1≤L3×105%); the first radiator 210 and the third radiator 230 are used to generate a first resonance, and the second radiator 220 is used to generate a second resonance, wherein the frequency difference relationship between the first resonance and the second resonance can be the same as Figure 2 The same as shown in the antenna 200 shown in the figure; the relationship between the working frequency bands of the first sub-antenna formed by the first radiator 210 and the third radiator 230 and the second sub-antenna formed by the second radiator 220, etc. For another example, when the first end of the second radiator 220 is a grounded end and the second end is an open end, the length L1 of the first frame, the length L2 of the second frame, and the length L3 of the third frame satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5. In one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance is greater than or equal to 1.5 and less than or equal to 4.5.

[0282] exist Fig.31 In the antenna 200 shown, the antenna structure formed by the first radiator 210 and the antenna structure formed by the third radiator 230 are substantially symmetrical.

[0283] It should be understood that at the second position 102, the first end of the first radiator 210 is a ground end belonging to the current region (the region includes a point with large current), and the first end of the second radiator 220 is an open end belonging to the electric field region (the region includes a point with large electric field). When the ground point 221 is close to the second position 102, the electric field of the first end of the second radiator 220 is weakened, causing the ability of the first metal connector 251 to transmit electrical signals to deteriorate, and the radiation characteristics of the antenna 200 are weakened. Therefore, a certain distance needs to be maintained between the ground point 221 and the second position 102 so that the antenna 200 has good radiation characteristics. The first feeding point 261 can be located at any position of the second radiator 220, and the embodiment of the present application does not limit this.

[0284] In one embodiment, the length L6 of the frame between the ground point 221 and the second position 102 satisfies the length L1 of the first frame: L1×50%≤L6, so that the antenna 200 has better radiation characteristics.

[0285] Fig.32 and Fig.33 yes Fig.31 The simulation results of the antenna in the electronic device 10 are shown. Fig.32 yes Fig.31 S-parameter simulation results of the antenna shown. Fig.33 yes Fig.31 Simulation results for the radiation efficiency and system efficiency of the antenna shown.

[0286] like Fig.32 As shown, the antenna 200 can resonate at around 0.9 GHz, around 1.8 GHz, around 2.5 GHz, and around 2.75 GHz, and the antenna 200 has a good working bandwidth.

[0287] like Fig.33 As shown, in the resonant frequency band, the antenna 200 has good radiation efficiency and system efficiency.

[0288] Figure 34 to Figure 37 yes Fig.31 The hot spot simulation result of the antenna 200 in the electronic device 10 is shown. Fig.34 yes Fig.31 The hot spot simulation result of the antenna 200 at 1.77 GHz on the side of the electronic device is shown. Fig.35 yes Fig.31 The hot spot simulation result of the antenna 200 at 2.5 GHz on the side of the electronic device is shown. Fig.36 yes Fig.31The hot spot simulation result of the antenna 200 at 1.77 GHz on the back of the electronic device is shown. Fig.37 yes Fig.31 The hot spot simulation result of the antenna 200 at 2.5 GHz on the back of the electronic device is shown.

[0289] like Fig.34 and Fig.35 As shown, when the antenna resonates, there are two hot spots at the resonance points (1.77 GHz and 2.5 GHz) in the area 5 mm away from the frame on the side of the electronic device, which disperses the hot spots generated by the antenna and makes the antenna have a low hot spot (low hot spot intensity) characteristic.

[0290] like Fig.36 and Fig.37 As shown, when the antenna resonates, at the resonance points (1.77 GHz and 2.5 GHz), the hot spots are evenly distributed in the area 5 mm away from the back cover of the electronic device, and the intensity of a single hot spot is dispersed, giving the antenna a low hot spot (low hot spot intensity) characteristic.

[0291] It should be understood that due to Fig.31 The antenna 200 shown is compared to Fig.14 The antenna 200 shown has a lower symmetry (the ground point is not arranged in the central region of the second radiator), and therefore the intensity of the hot spot generated by the antenna is increased.

[0292] Fig.38 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0293] like Fig.38 As shown, the electronic device 10 includes a conductive frame 11 and an antenna 200 .

[0294] The frame 11 includes a first position 101, a second position 102, a third position 103 and a fourth position 104. The second position 102 is located between the first position 101 and the third position 103, and the third position 103 is located between the second position 102 and the fourth position 104. The frame 11 is provided with a first gap at the second position 102, and a second gap at the third position 103.

[0295] The antenna 200 includes a first radiator 210, a second radiator 220, and a third radiator 230. The first end of the first radiator 210 is opposite to the first end of the second radiator 220 and does not contact each other. The first end of the third radiator 230 is opposite to the second end of the second radiator 220 and does not contact each other. The first end of the first radiator 210 and the first end of the third radiator 230 are open ends, and the first end of the first radiator 210 and the first end of the third radiator 230 are grounded ends. The first end and the second end of the second radiator 220 are open ends.

[0296] The antenna 200 further includes a first feeding circuit 241 and a third metal connection member 252 .

[0297] The second radiator 220 includes a ground point 221, a first feeding point 261, and a second feeding point 262. The ground point 221 is located between the first feeding point 261 and the second feeding point 262. The second radiator 220 is grounded at the ground point 221. The third metal connector includes a third feeding point 263. A first end of the third metal connector 253 is coupled to the first feeding point 261, and a second end of the third metal connector 253 is coupled to the second feeding point. The first feeding circuit 241 is coupled to the third feeding point 263.

[0298] The first radiator 210 is a first frame between the first position 101 and the second position 102. The second radiator 220 is a second frame between the second position 102 and the third position 103. The third radiator 230 is a third frame between the third position 103 and the fourth position 104.

[0299] The length L1 of the border 11 (first border) between the first position 101 and the second position 102, the length L2 of the border between the second position 102 and the third position 103 (second border), and the length L3 of the border between the third position 103 and the fourth position 104 (third border) satisfy: L1<L2, L3<L2, and L3×90%≤L1≤L3×110%.

[0300] It should be understood that Fig.38 In the antenna 200 shown, the first end of the first radiator 210 and the first end of the third radiator 230 are open ends, and electrical signals can be fed to the first radiator 210 and the third radiator 230 by indirect coupling.

[0301] For the sake of brevity, Fig.38 The antenna 200 is shown with Figure 2 Similar parts of the antenna 200 shown are not described one by one, for example, the lengths of the first radiator 210, the second radiator 220 and the third radiator 230, and the proportional relationship between the lengths of the radiators (for example, the length L1 of the first frame and the length L3 of the third frame satisfy: L3×95%≤L1≤L3×105%); the relationship between the first radiator 210 and the third radiator 230 for generating the first resonance and the second radiator 220 for generating the second resonance, wherein the frequency difference relationship between the first resonance and the second resonance can be the same as Figure 2The same as shown in the antenna 200 shown in the figure; the relationship between the working frequency bands of the first sub-antenna formed by the first radiator 210 and the third radiator 230 and the second sub-antenna formed by the second radiator 220, etc. For another example, when the first end of the second radiator 220 is a grounded end and the second end is an open end, the length L1 of the first frame, the length L2 of the second frame, and the length L3 of the third frame satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5. In one embodiment, the ratio of the frequency of the first resonance to the frequency of the second resonance is greater than or equal to 1.5 and less than or equal to 4.5.

[0302] exist Fig.38 In the antenna 200 shown, the antenna structure formed by the first radiator 210 and the antenna structure formed by the third radiator 230 are substantially symmetrical.

[0303] In one embodiment, the antenna 200 further includes a first electronic component 271 and a second electronic component 272. A first end of the first electronic component 271 is coupled to the first feeding circuit 241, and a second end of the first electronic component 271 is coupled to the third feeding point 263. A first end of the second electronic component 272 is coupled between the first feeding circuit 241 and the first end of the first electronic component 271, and a second end of the second electronic component 272 is grounded.

[0304] It should be understood that the first electronic component 271 and the second electronic component 272 can be used to adjust the coupling amount between the first radiator 210 and the second radiator 220 at the second position 102, and the coupling amount between the third radiator 230 and the second radiator 220 at the third position 103, thereby determining the frequency of the resonance generated by the antenna 200.

[0305] In one embodiment, in the above embodiments, the structure in which the first radiator 210 and the third radiator 230 have one end as an open end and the other end as a grounded end is used as an example for description. In actual production or design, the first radiator 210 and the third radiator 230 may also be a structure in which both ends are open ends. For example, the first radiator 210 and the third radiator 230 may be a T-shaped structure.

[0306] Fig.39 and Fig.40 yes Fig.38 The simulation results of the antenna in the electronic device 10 are shown. Fig.39 yes Fig.38 S-parameter simulation results of the antenna shown. Fig.40 yes Fig.38 Simulation results for the radiation efficiency and system efficiency of the antenna shown.

[0307] It should be understood that for the sake of simplicity of discussion, the embodiments of the present application are described by taking the capacitance value of the first electronic component as 2 pF and the capacitance value of the second electronic component as 0.8 pF as an example, and adjustments will be made in actual production or design.

[0308] like Fig.39 As shown, the antenna 200 can resonate at around 0.95 GHz, around 1.9 GHz, around 2.51 GHz, and around 4.43 GHz, and the antenna 200 has a relatively wide working bandwidth.

[0309] like Fig.40 As shown, in the resonant frequency band, the antenna 200 has good radiation efficiency and system efficiency.

[0310] Figure 41 to Figure 44 yes Fig.38 The current distribution diagram of the antenna 200 in the electronic device 10 is shown. Fig.41 yes Fig.38 The current distribution diagram of the antenna 200 at 0.95 GHz is shown. Fig.42 yes Fig.38 The current distribution diagram of the antenna 200 at 1.9 GHz is shown. Fig.43 yes Fig.38 The current distribution diagram of the antenna 200 at 2.51 GHz is shown. Fig.44 yes Fig.38 The current distribution diagram of the antenna 200 at 4.43 GHz is shown.

[0311] like Figure 41 to Figure 44 As shown in the current distribution diagram, the current on the second radiator is opposite on both sides of the grounding point, and the current on the first radiator and the current on the third radiator are opposite. Therefore, in the plane where the frame is located (for example, the yoz plane), the opposite currents cancel each other out, reducing the hot spots generated on the side of the electronic device.

[0312] like Fig.41 As shown, the resonance generated near 0.9G5Hz is mainly generated by the second radiator and may correspond to a half-wavelength mode.

[0313] like Fig.42 As shown, resonance occurs near 1.9 GHz, and the second radiator is used as a transmission line to feed electrical signals to the first radiator and the third radiator, so that the first radiator and the third radiator resonate. In this case, the second radiator is not used as a transmission line, but as a radiator, and its loss is greatly reduced, effectively improving the efficiency of the antenna.

[0314] like Fig.43 and Fig.44As shown, on both sides of the grounding point, the currents show distribution patterns of three-quarter wavelength mode and four-fifth wavelength mode. Therefore, the first radiator, the second radiator and the third radiator can work together in the two-three-wavelength mode and the two-fifth wavelength mode to generate resonance.

[0315] Figures 45 to 50 yes Fig.38 The hot spot simulation result of the antenna 200 in the electronic device 10 is shown. Fig.45 yes Fig.38 The hot spot simulation result of the antenna 200 at 1.9 GHz on the side of the electronic device is shown. Fig.46 yes Fig.38 The hot spot simulation result of the antenna 200 at 2.51 GHz on the side of the electronic device is shown. Fig.47 yes Fig.38 The hot spot simulation result of the antenna 200 at 4.43 GHz on the side of the electronic device is shown. Fig.48 yes Fig.38 The hot spot simulation result of the antenna 200 at 1.9 GHz on the back of the electronic device is shown. Fig.49 yes Fig.38 The hot spot simulation result of the antenna 200 at 2.51 GHz on the back of the electronic device is shown. Fig.50 yes Fig.38 The hot spot simulation result of the antenna 200 at 4.43 GHz on the back of the electronic device is shown.

[0316] like Fig.45 , Fig.46 and Fig.47 As shown, when the antenna resonates, at the resonance points (1.9 GHz, 2.51 GHz and 4.43 GHz), there are at least two hot spots in the area 5 mm away from the frame on the side of the electronic device, which disperses the intensity of the hot spots generated by the antenna and makes the antenna have a low hot spot (low hot spot intensity) characteristic.

[0317] like Fig.48 , Fig.49 and Fig.50 As shown, when the antenna resonates, at the resonance points (1.9 GHz, 2.51 GHz and 4.43 GHz), there are at least two hot spots in the area 5 mm away from the back cover on the back of the electronic device, which disperses the intensity of the hot spots generated by the antenna and makes the antenna have a low hot spot (low hot spot intensity) characteristic.

[0318] Fig.51 It is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0319] like Fig.51 As shown, the frame 11 includes a first side 202 and a second side 203 that intersect at an angle.

[0320] The first position 101 is located at the first side 202 , and the fourth position 104 is located at the second side 203 .

[0321] It should be understood that Fig.51 The antenna 200 is shown with Fig.38 The difference between the antenna 200 shown in FIG. 2 is that the radiators (the first radiator 210, the second radiator 220 and the third radiator 230) are arranged differently. Fig.38 In the antenna 200 shown, the radiator is in a straight line shape and is disposed on the first side of the frame 11. Fig.51 In the antenna 200 shown, the radiator is in a zigzag shape, with a portion disposed on the first side of the frame 11 and a portion disposed on the second side of the frame 11 .

[0322] In one embodiment, the second position 102 may be located at the first side 202 , and the third position 103 may be located at the second side 203 .

[0323] In one embodiment, the second position 102 and the third position 103 may both be located at the second side 203 .

[0324] In one embodiment, the ratio of the length of the radiator (the first radiator, the second radiator and the third radiator) along the first direction (the extension direction of the first edge 202, for example, the x direction) to the length of the border between the first position 101 and the fourth position 104 is less than or equal to 0.25.

[0325] It should be understood that based on the radiator of the antenna 200 being a broken line, the radiator can be more flexibly laid out using the frame of the electronic device. When the ratio is within the above range, the antenna 200 still has good low hot spot characteristics. However, as the above ratio increases, although the current on the first radiator 210 and the current on the third radiator 230 are opposite, they cannot cancel each other out, which will deteriorate the low hot spot characteristics of the antenna 200. For example, part of the current on the first radiator 210 is transmitted along the x direction, and the current on the third radiator 230 is transmitted along the y direction. The currents transmitted in the two directions cannot cancel each other out, and will be synthesized into a current at a certain angle to the x direction or the y direction, thereby deteriorating the low hot spot characteristics of the antenna 200.

[0326] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0327] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electronic device, characterized in that: include: A frame, wherein the frame comprises a first position, a second position, a third position and a fourth position, the second position is located between the first position and the third position on the frame, the third position is located between the second position and the fourth position on the frame, the frame is provided with a first gap at the second position, and the frame is provided with a second gap at the third position; An antenna, the antenna comprising a first radiator, a second radiator, a third radiator, a first feeding circuit and a first metal connector, the first metal connector comprising a first feeding point, the first feeding circuit being coupled to the first feeding point, the first radiator comprising a first connection point, the third radiator comprising a second connection point, a first end of the first metal connector being coupled to the first connection point, and a second end of the first metal connector being coupled to the second connection point; Wherein, the first radiator is a first frame between the first position and the second position, the second radiator is a second frame between the second position and the third position, and the third radiator is a third frame between the third position and the fourth position; The length L1 of the first frame, the length L2 of the second frame, and the length L3 of the third frame satisfy: L1<L2, L3<L2, and L3×90%≤L1≤L3×110%.

2. The electronic device according to claim 1, characterized in that: The second radiator includes a third connection point, and the third end of the first metal connection member is coupled to the third connection point.

3. The electronic device according to claim 1, characterized in that: The antenna includes a second feeding circuit; The second radiator includes a second feeding point, and the second feeding circuit is coupled to the second feeding point.

4. The electronic device according to any one of claims 1 to 3, characterized in that: The L1 and L3 satisfy: and L3×95%≤L1≤L3×105%.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The antenna further comprises a first electronic component and a second electronic component; The first electronic component is coupled between the first end of the first metal connector and the first connection point, and the second electronic component is coupled between the second end of the first metal connector and the second connection point.

6. The electronic device according to any one of claims 1 to 5, characterized in that: The first end of the first radiator is opposite to the first end of the second radiator and does not contact each other, and the first end of the third radiator is opposite to the second end of the second radiator and does not contact each other; The first end of the first radiator and the first end of the third radiator are grounded ends, and the second end of the first radiator and the second end of the third radiator are open ends, or, The first end of the first radiator and the first end of the third radiator are open ends, and the second end of the first radiator and the second end of the third radiator are ground ends.

7. The electronic device according to any one of claims 1 to 6, characterized in that: The first radiator and the third radiator are used to generate a first resonance; The second radiator is used to generate a second resonance, and the frequency of the resonance point of the second resonance point is lower than the frequency of the resonance point of the first resonance point.

8. The electronic device according to claim 7, characterized in that: The first end of the second radiator is a ground end, and the second end of the second radiator is an open end; The L1, the L2, and the L3 satisfy: L1×1.5≤L2≤L1×4.5, and / or, L3×1.5≤L2≤L3×4.5, and the ratio of the frequency of the first resonance to the frequency of the second resonance is greater than or equal to 1.5 and less than or equal to 4.

5.

9. An electronic device, characterized in that: include: A frame, wherein the frame comprises a first position, a second position, a third position and a fourth position, the second position is located between the first position and the third position on the frame, the third position is located between the second position and the fourth position on the frame, the frame is provided with a first gap at the second position, and the frame is provided with a second gap at the third position; An antenna, the antenna comprising a first radiator, a second radiator, and a third radiator, wherein a first end of the first radiator is opposite to a first end of the second radiator and does not contact each other, a first end of the third radiator is opposite to a second end of the second radiator and does not contact each other, a first end of the first radiator and a first end of the third radiator are grounded ends, and a first end and a second end of the second radiator are open ends; The antenna further comprises a first feeding circuit, a first metal connector and a second metal connector, the second radiator comprises a grounding point, a first feeding point, a first connection point and a second connection point, the grounding point and the first feeding point are located between the first connection point and the second connection point, the second radiator is grounded at the grounding point, the first feeding circuit is coupled to the first feeding point, the first radiator comprises a third connection point, the first end of the first metal connector is coupled to the first connection point, the second end of the first metal connector is coupled to the third connection point, the third radiator comprises a fourth connection point, the first end of the second metal connector is coupled to the second connection point, and the second end of the second metal connector is coupled to the fourth connection point; The first radiator is a first frame between the first position and the second position, the second radiator is a second frame between the second position and the third position, and the third radiator is a third frame between the third position and the fourth position; The length L1 of the first frame, the length L2 of the second frame, and the length L3 of the third frame satisfy: L1<L2, L3<L2, and L3×90%≤L1≤L3×110%.

10. The electronic device according to claim 9, characterized in that: The grounding point is located in the central area of ​​the second radiator; The second radiator further includes a second feeding point, and the grounding point is located between the first feeding point and the second feeding point; The antenna also includes a third metal connector, the third metal connector includes a third feeding point, a first end of the third metal connector is coupled to the first feeding point, a second end of the third metal connector is coupled to the second feeding point, and the first feeding circuit is coupled to the third feeding point.

11. The electronic device according to claim 10, characterized in that: The third feeding point is located in a central area of ​​the third metal connecting member.

12. The electronic device according to claim 10 or 11, characterized in that: The length D3 of the third metal connecting piece satisfies the length L2: L2×6%≤D3≤L2×25%.

13. The electronic device according to claim 9, characterized in that: The first connection point is located between the ground point and the second location; The length L4 of the frame between the ground point and the second position, the L1 and the L2 satisfy: L1×33%≤L4≤L2×33%.

14. The electronic device according to any one of claims 9 to 13, characterized in that: The antenna further comprises a first electronic component and a second electronic component; The first electronic component is coupled between the first end of the first metal connector and the first connection point, and the second electronic component is coupled between the first end of the second metal connector and the second connection point.

15. The electronic device according to any one of claims 9 to 14, characterized in that: The length D1 of the first metal connector and the length L1 satisfy: L1×25%≤D1≤L1, and / or, The length D2 of the second metal connecting member and the length L3 satisfy: L3×25%≤D2≤L3.

16. An electronic device, characterized in that: include: A frame, wherein the frame comprises a first position, a second position, a third position and a fourth position, the second position is located between the first position and the third position on the frame, the third position is located between the second position and the fourth position on the frame, the frame is provided with a first gap at the second position, and the frame is provided with a second gap at the third position; An antenna, the antenna comprising a first radiator, a second radiator, and a third radiator, wherein a first end of the first radiator is opposite to a first end of the second radiator and does not contact each other, a first end of the third radiator is opposite to a second end of the second radiator and does not contact each other, a first end of the first radiator and a first end of the third radiator are open ends, and a first end and a second end of the second radiator are open ends; The antenna further comprises a first feeding circuit and a first metal connector, the second radiator comprises a grounding point, a first feeding point and a second feeding point, the grounding point and the first feeding point are located between the first feeding point and the second feeding point, the second radiator is grounded at the grounding point, the first metal connector comprises a third feeding point, a first end of the first metal connector is coupled to the first feeding point, a second end of the first metal connector is coupled to the second feeding point, and the first feeding circuit is coupled to the third feeding point; The first radiator is a first frame between the first position and the second position, the second radiator is a second frame between the second position and the third position, and the third radiator is a third frame between the third position and the fourth position; The length L1 of the first frame, the length L2 of the second frame, and the length L3 of the third frame satisfy: L1<L2, L3<L2, and L3×90%≤L1≤L3×110%.

17. The electronic device according to claim 16, characterized in that: The grounding point is located in a central area of ​​the second radiator.

18. The electronic device according to claim 17, characterized in that: The third feeding point is located in a central area of ​​the third metal connecting member.

19. The electronic device according to claim 17 or 18, characterized in that: The length D3 of the third metal connecting piece satisfies the length L2: L2×6%≤D3≤L2×25%.

20. The electronic device according to any one of claims 16 to 19, characterized in that: The antenna further comprises a first electronic component and a second electronic component; The first end of the first electronic component is coupled to the first feeding circuit, the second end of the first electronic component is coupled to the third feeding point, the first end of the second electronic component is coupled between the first feeding circuit and the first end of the first electronic component, and the second end of the second electronic component is grounded.

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