Electronic device

Abstract

The present application provides an electronic device, comprising an antenna. In the antenna, a conductive portion of a frame of the electronic device serves as a first radiator, and a second radiator is provided spaced apart from one side of the first radiator. A novel antenna structure is formed by means of the first radiator and the second radiator that are provided close to each other. The first radiator and the second radiator are used to generate a composite antenna mode, and have a low directivity coefficient, thereby enabling the electronic device to have good communication performance in all directions.

Description

An electronic device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on October 31, 2023, with application number 202311441372.3 and application name “An Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

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

[0003] As demand for high-speed data transmission increases, the industrial design (ID) trend of electronic devices is toward larger screens and multiple cameras. This results in increasingly limited antenna layout space.

[0004] Currently, in some electronic device usage scenarios (for example, when communicating via Wi-Fi), traditional antenna designs have high directivity, resulting in uneven coverage and a poor communication experience in areas with weak coverage. Therefore, designing antennas with low directivity is an urgent problem that needs to be solved.

[0005] Summary of the Invention

[0006] The present application provides an electronic device including an antenna. The antenna uses a conductive portion of a frame of the electronic device as a first radiator, and a second radiator is spaced apart from the first radiator.

[0007] In a first aspect, an electronic device is provided, comprising: a floor; a frame, at least a portion of the frame being spaced apart from the floor, the frame including a first position and a second position, the frame being coupled to the floor at the first position and the second position; and an antenna, the antenna comprising: a first radiator, the first radiator comprising a conductive portion of the frame between the first position and the second position; and a second radiator, the second radiator being spaced apart from the first radiator and the floor, a projection of the second radiator on the frame along a first direction at least partially overlapping with the first radiator, the first direction being a direction perpendicular to an extension direction of the first radiator. The first radiator and the second radiator are configured to generate a first resonance, a distance D1 between the first radiator and the second radiator being less than or equal to 10 mm or one-quarter of a first wavelength, the first wavelength being the wavelength corresponding to the first resonance, a ratio between a dimension L2 of the second radiator along a second direction X and a dimension L3 of the second radiator along the first direction Y being greater than 1, the second direction being the extension direction of the first radiator, the first end of the second radiator being open and the second end being grounded, and the distance between the first end of the second radiator and the first radiator being less than the distance between the second end of the second radiator and the first radiator.

[0008] According to an embodiment of the present application, a new antenna structure is formed by arranging a first radiator and a second radiator in close proximity (for example, a distance D1 is less than or equal to 10 mm or one quarter of the first wavelength). The first radiator and the second radiator are used to generate a composite antenna pattern (generated jointly by the first radiator and the second radiator, not by a single radiator) with a lower directivity coefficient, thereby enabling the electronic device to have good communication performance in all directions.

[0009] It should be understood that the larger the directivity coefficient, the greater the proportion of energy radiated by the antenna in a certain direction, and the more concentrated the energy radiation. When the directivity coefficient of the antenna is high, the proportion of energy radiated by the antenna in the maximum radiation direction is high, and therefore, the proportion of energy radiated by the antenna in other directions is low. When a user uses an electronic device that includes the antenna, the electronic device can only have good communication performance in the area near the maximum radiation direction of the antenna. When a user moves with the electronic device, and the device that transmits signals to the antenna (for example, a router) is not in the area near the maximum radiation direction of the antenna, the communication performance of the electronic device will deteriorate, affecting the user experience.

[0010] In combination with the first aspect, in some implementations of the first aspect, at a resonance point of the first resonance, an electric field between the first radiator and the second radiator is opposite to an electric field between the first radiator and the floor.

[0011] In conjunction with the first aspect, in certain implementations of the first aspect, at the resonance point of the first resonance, the magnetic field between the first radiator and the second radiator and the magnetic field between the first radiator and the floor are parallel to the floor. In conjunction with the first aspect, in certain implementations of the first aspect, at the resonance point of the first resonance, the null point of the directional pattern generated by the antenna is not located circumferentially of the electronic device.

[0012] According to an embodiment of the present application, at the resonance point of the first resonance, the electric field between the first radiator and the second radiator is in the opposite direction to the electric field between the first radiator and the floor. The electric field between the first radiator and the second radiator is directed from the first radiator to the second radiator, for example, along the negative direction of the y-axis. The electric field between the first radiator and the floor is directed from the floor to the first radiator, for example, along the positive direction of the y-axis.

[0013] Since the electric field between the first radiator and the second radiator and the electric field between the first radiator and the floor can both generate magnetic fields parallel to the floor (for example, parallel to the xoy plane), for example, the directions of the magnetic fields are the same, along the positive direction of the z-axis, thereby improving the radiation characteristics of the antenna in a direction parallel to the floor (for example, parallel to the xoy plane).

[0014] In one embodiment, a magnetic field parallel to the floor (e.g., parallel to the xoy plane) can be generated, so that the null point of the directional pattern is not located in the circumferential direction of the electronic device, thereby improving the radiation characteristics of the antenna in the direction parallel to the floor (e.g., parallel to the xoy plane). The null point of the directional pattern can be understood as the point where the amplitude of the directional pattern is minimum.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the length L1 of the first radiator and the dimension L2 of the second radiator along the second direction satisfy: L1×50%≤L2≤L1×200%.

[0016] According to an embodiment of the present application, when the length L1 of the first radiator and the dimension L2 of the second radiator along the second direction are within the above range, it is conducive to the generation of a composite mode of the first radiator and the second radiator, and the radiation characteristics of the antenna at the first resonance can be improved.

[0017] In combination with the first aspect, in some implementations of the first aspect, a ratio between a dimension L2 of the second radiator along the second direction X and a dimension L3 of the second radiator along the first direction Y is less than or equal to 3.

[0018] According to the embodiment of the present application, the dimension L2 of the second radiator along the second direction (eg, the x-direction) is increased, which can improve the radiation efficiency and system efficiency of the antenna.

[0019] At the same time, the first radiator may have a structure similar to a slot antenna, and the second radiator may have a structure similar to a PIFA, which is conducive to the generation of a composite mode of the first radiator and the second radiator.

[0020] In combination with the first aspect, in some implementations of the first aspect, the resonance point frequency of the first resonance is greater than or equal to 0.7 GHz and less than or equal to 6 GHz.

[0021] According to an embodiment of the present application, the operating frequency band of the antenna may include the 5G frequency band of WiFi.

[0022] In combination with the first aspect, in some implementations of the first aspect, a size of the second radiator along the first direction is greater than or equal to 2 mm and less than or equal to 25 mm.

[0023] In combination with the first aspect, in some implementations of the first aspect, a size of the second radiator along the first direction is greater than or equal to one twenty-fifth of the first wavelength and less than or equal to one half of the first wavelength.

[0024] According to an embodiment of the present application, the size of the second radiator along the first direction can be used to adjust the coupling between the first radiator and the second radiator, thereby adjusting the resonance point frequency of the first resonance generated by the composite mode.

[0025] In combination with the first aspect, in some implementations of the first aspect, the antenna further includes an electronic component, which is coupled between the first radiator and the second radiator.

[0026] According to an embodiment of the present application, the electronic component can be used to adjust the coupling between the first radiator and the second radiator, thereby adjusting the resonance point frequency of the first resonance generated by the composite mode.

[0027] In combination with the first aspect, in certain implementations of the first aspect, a ratio of a length of an overlapping portion of a projection of the second radiator on the frame along the first direction and the first radiator to a length of the first radiator is greater than or equal to 30%.

[0028] According to an embodiment of the present application, when the ratio is greater than or equal to 30%, the first radiator and the second radiator can have better coupling characteristics, and the antenna has better radiation characteristics. When the first radiator and the second radiator completely overlap along the first direction, the coupling characteristics between the first radiator and the second radiator are optimal.

[0029] In combination with the first aspect, in certain implementations of the first aspect, the second radiator is in a sheet shape, and in the first direction, the first end of the second radiator is close to the first side of the first radiator, and the second end of the second radiator is away from the second side of the first radiator, the first side is suspended, and at least a portion of the second side is coupled to the floor.

[0030] According to the embodiment of the present application, the edge of the second radiator can be a straight line, a curve or a broken line. The embodiment of the present application does not limit this. For the sake of simplicity, the edge is only described as a straight line as an example.

[0031] In combination with the first aspect, in some implementations of the first aspect, the antenna further includes a feeding circuit, one of the first radiator and the second radiator includes a feeding point, and the feeding circuit is coupled to the feeding point.

[0032] In combination with the first aspect, in certain implementations of the first aspect, the antenna further includes a feeding circuit and a feeding branch; wherein the feeding branch is spaced apart from the first radiator, the second radiator, and the floor, the feeding branch includes a feeding point, and the feeding circuit is coupled to the feeding point.

[0033] According to the embodiment of the present application, the feeding form of the antenna is not limited and can be determined according to the actual layout in the electronic device. For example, the feeding point can be located on the first radiator, the second radiator or a separately set feeding branch.

[0034] In combination with the first aspect, in some implementations of the first aspect, the first radiator and the second radiator are also used to generate a second resonance, the resonant frequency of the second resonance is lower than the resonant frequency of the first resonance, the resonant frequency band of the first resonance includes a first frequency band, and the resonant frequency band of the second resonance includes a second frequency band.

[0035] According to the embodiment of the present application, the novel antenna structure formed by the adjacently arranged first radiator and the second radiator can have multiple composite modes, thereby generating multiple resonances to expand the bandwidth of the antenna.

[0036] In combination with the first aspect, in some implementations of the first aspect, the first frequency band includes a 5G frequency band of WiFi, and the second frequency band includes a 2.4G frequency band of WiFi.

[0037] In combination with the first aspect, in certain implementations of the first aspect, the antenna further includes a parasitic branch, and the feeding branch is located between the parasitic branch and the second radiator; wherein the first end of the parasitic branch is a ground end, and the second end of the parasitic branch is an open end; and the ratio between the size of the parasitic branch along the first direction and the size of the parasitic branch along the second direction is greater than 1.

[0038] According to the embodiment of the present application, a sheet-shaped parasitic branch can be used to generate parasitic resonance, thereby expanding the working bandwidth of the antenna.

[0039] In combination with the first aspect, in some implementations of the first aspect, the parasitic branch is used to generate a parasitic resonance, the resonant frequency of the parasitic resonance is lower than the resonant frequency of the first resonance, the resonant frequency band of the first resonance includes a first frequency band, and the resonant frequency band of the parasitic resonance includes a third frequency band.

[0040] According to an embodiment of the present application, when the feeding circuit feeds an electrical signal, the parasitic branch can generate a parasitic resonance. The resonant frequency band of the parasitic resonance may include a third frequency band. The efficiency (for example, radiation efficiency and system efficiency) of the parasitic resonance generated by the parasitic branch is higher than the efficiency of the second resonance generated by the first radiator and the second radiator. Compared with the second resonance, using the resonant frequency band of the parasitic resonance as the communication frequency band can improve the radiation characteristics of the antenna in this frequency band.

[0041] In combination with the first aspect, in some implementations of the first aspect, the resonant frequency band of the first resonance includes a first frequency band, the first frequency band includes a 5G frequency band of WiFi, and the third frequency band includes a 2.4G frequency band of WiFi. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG1 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0043] FIG2 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0044] FIG. 3 is a simulation result of the directivity coefficient of the antenna 200 in the electronic device 10 shown in FIG. 2 .

[0045] FIG4 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0046] FIG. 5 is a schematic cross-sectional view of the electronic device 10 shown in FIG. 4 along line AA′.

[0047] FIG. 6 shows simulation results of S parameters of the antenna 200 shown in FIG. 4 .

[0048] FIG. 7 shows simulation results of the radiation efficiency and system efficiency of the antenna 200 shown in FIG. 4 .

[0049] FIG. 8 is a directional diagram of the antenna 200 shown in FIG. 4 at a first resonance point (eg, 5.2 GHz).

[0050] FIG9 is a schematic diagram of electric field distribution of the antenna 200 shown in FIG4 at a first resonance point (eg, 5.2 GHz).

[0051] FIG10 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0052] FIG. 11 shows simulation results of S parameters of the antenna 200 shown in FIG. 10 .

[0053] FIG. 12 shows simulation results of the radiation efficiency and system efficiency of the antenna 200 shown in FIG. 10 .

[0054] FIG. 13 is a directional diagram of the antenna 200 shown in FIG. 10 at a first resonance point (eg, 5.2 GHz).

[0055] FIG14 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0056] FIG. 15 shows simulation results of S parameters of the antenna 200 shown in FIG. 14 .

[0057] FIG. 16 shows simulation results of the radiation efficiency and system efficiency of the antenna 200 shown in FIG. 14 .

[0058] FIG. 17 is a directional diagram of the antenna 200 shown in FIG. 14 at a first resonance point (eg, 5.2 GHz).

[0059] FIG18 shows simulation results of S parameters of the antenna 200 shown in FIG14 .

[0060] FIG19 shows simulation results of the radiation efficiency and system efficiency of the antenna 200 shown in FIG14 .

[0061] FIG. 20 is a directional diagram of the antenna 200 shown in FIG. 14 at a first resonance point (eg, 5.2 GHz).

[0062] FIG21 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0063] FIG. 22 shows simulation results of S parameters of the antenna 200 shown in FIG. 21 .

[0064] FIG. 23 shows simulation results of the radiation efficiency and system efficiency of the antenna 200 shown in FIG. 21 .

[0065] FIG. 24 is a directional diagram of the antenna 200 shown in FIG. 21 at a first resonance point (eg, 5.2 GHz).

[0066] FIG25 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0067] FIG26 shows the simulation results of the S parameters of the antenna 200 shown in FIG25 .

[0068] FIG27 shows simulation results of the radiation efficiency and system efficiency of the antenna 200 shown in FIG25 .

[0069] FIG28 is a directional diagram of the antenna 200 shown in FIG25 at the resonance point (eg, 2.4 GHz) of the parasitic resonance.

[0070] FIG. 29 is a directional diagram of the antenna 200 shown in FIG. 25 at a first resonance point (eg, 5.2 GHz).

[0071] FIG30 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0072] FIG31 shows simulation results of S parameters of the antenna 200 shown in FIG30 .

[0073] FIG32 shows simulation results of the radiation efficiency and system efficiency of the antenna 200 shown in FIG30 .

[0074] FIG33 is a directional diagram of the antenna 200 shown in FIG30 at 5.2 GHz.

[0075] FIG34 is a directional diagram of the antenna 200 shown in FIG30 at 5.8 GHz.

[0076] FIG35 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0077] The technical solution in this application will be described below with reference to the accompanying drawings.

[0078] It should be understood that the term "and / or" as used herein is simply a term used to describe the existence of three possible relationships between related objects. For example, "A and / or B" can represent the existence of A alone, the existence of both A and B, and the existence of B alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0079] When used in this application, "within the range of...", unless it is specifically stated that the end value is not included, it is assumed that both end values ​​of the range are included. For example, in the range of 1 to 5, the two values ​​1 and 5 are included.

[0080] Coupling: can be understood as direct coupling and / or indirect coupling, and "coupling connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be referred to as "electrical connection", which is understood as the physical contact and electrical conduction between components; it can also be understood as the form in which different components in the circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be referred to as capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitance through coupling between the gap between two conductive parts.

[0081] Component / device: includes at least one of lumped component / device and distributed component / device.

[0082] Lumped component / device: This refers to all components whose size is much smaller than the wavelength relative to the circuit's operating frequency. For a signal, the component's characteristics remain constant at all times, regardless of frequency.

[0083] 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.

[0084] Capacitance: This can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitors; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0085] Inductance: This can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive material.

[0086] Radiator: A device in an antenna used to receive / send electromagnetic wave radiation. In some cases, the narrow meaning of "antenna" is the radiator, which converts the guided wave energy from the transmitter into radio waves, or converts radio waves into guided wave energy, used to radiate and receive radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, where it is converted into a certain polarized electromagnetic wave energy and radiated in the desired direction. The receiving radiator converts the electromagnetic wave energy of a certain polarization from a specific direction in space into modulated high-frequency current energy and transmits it to the receiver input via the feeder line.

[0087] The radiator may include a conductor with a specific shape and size, such as a linear or sheet shape, etc., and the present application does not limit the specific shape. In one embodiment, the linear radiator can be simply referred to as a linear antenna. In one embodiment, the linear radiator can be implemented by a conductive frame, and can also be called a frame antenna. In one embodiment, the linear radiator can be implemented by a bracket conductor, and can also be called a bracket antenna. In one embodiment, the wire diameter (for example, including thickness and width) of the linear radiator, or the radiator of the linear antenna is much smaller than the wavelength (for example, the wavelength of the medium) (for example, less than 1 / 16 of the wavelength), and the length can be comparable to the wavelength (for example, the wavelength of the medium) (for example, the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave oscillator antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna typically includes two radiating branches, and each branch is fed by a feeding portion from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted-F antenna because its side view is an inverted-F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted-F antenna (also known as a PIFA, Planar Inverted F Antenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes circular, rectangular, annular, etc., and the present application does not limit the specific shape. The structure of a microstrip antenna generally consists of a dielectric substrate, a radiator, and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0088] The radiator may also include a slot or slot formed in a conductor, for example, a closed or semi-closed slot or slot formed in a grounded conductor surface. In one embodiment, a slotted or slotted radiator may be referred to as a slot antenna or slot antenna. In one embodiment, the radial dimension (e.g., including the width) of the slot or slot of the slot antenna / slot antenna is much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is approximately 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slot may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slot (e.g., a closed slot or slot with an additional opening) may be referred to as an open slot antenna. In some embodiments, the slot is elongated. In some embodiments, the slot is approximately half a wavelength (e.g., the dielectric wavelength). In some embodiments, the slot is approximately an integer multiple of the wavelength (e.g., one wavelength). In some embodiments, the slot can be fed with a transmission line spanning one or both sides, thereby exciting a radio frequency electromagnetic field in the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a conductive frame with both ends grounded, also known as a frame antenna. In this embodiment, the slot antenna or slot antenna can be considered to include a linear radiator spaced from the floor and grounded at both ends, thereby forming a closed or semi-enclosed slot or slot. In one embodiment, the radiator of a slot antenna or slot antenna can be implemented as a bracket conductor with both ends grounded, also known as a bracket antenna.

[0089] The feed circuit is a combination of all circuits used for receiving and transmitting radio frequency signals. The feed circuit may include a transceiver and an RF front end circuit. In some cases, the "feed circuit" is understood in a narrow sense as a radio frequency chip (RFIC, radio frequency integrated circuit), and the RFIC can be considered to include an RF front end chip and a transceiver. The feed circuit has the function of converting radio waves (e.g., radio frequency signals) and electrical signals (e.g., digital signals). Generally, it is considered to be part of the radio frequency.

[0090] In some embodiments, the electronic device may also include a test socket (or RF socket or RF test socket). This test socket can be used to insert a coaxial cable and test the characteristics of the RF front-end circuit or antenna radiator through the cable. The RF front-end circuit can be considered as the circuit portion coupled between the test socket and the transceiver.

[0091] 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.

[0092] It should be understood that any two of the first / second / ...Nth feeding circuits in the present application can share the same transceiver, for example, transmitting signals through a radio frequency channel in a transceiver (for example, a port (pin) of a radio frequency chip); they can also share a radio frequency front-end circuit, for example, processing signals through a switch or amplifier in a radio frequency front-end.

[0093] It should also be understood that two feeding circuits in the first / second / ...Nth feeding circuit in the present application usually correspond to two radio frequency test sockets in the electronic device.

[0094] A matching circuit is a circuit used to adjust the radiation characteristics of an antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. In another embodiment, the matching circuit is coupled between the test socket and the radiator. Typically, the matching circuit is a combination of circuits coupled between the radiator and the ground plane. In one embodiment, the matching circuit may include a switch and / or an electronic component; the switch may be an electronic component used to switch the coupling connection of the radiator. The matching circuit performs impedance matching and / or frequency tuning functions. Generally, it is considered to be part of the antenna.

[0095] The grounding structure / feeding structure may include a connector, such as a metal spring, through which the radiator is coupled to the floor / feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure may include a transmission line / feeding line, and the grounding structure may include a grounding wire.

[0096] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of an antenna radiator should not be narrowly understood as an end point or end portion that is physically disconnected from other radiators. It can also be considered as a point or a section on a continuous radiator. In one embodiment, an "end / point" may include a connection / coupling area on an antenna radiator that is coupled to other conductive structures. For example, the feeding end / feeding point may be a coupling area on an antenna radiator that is coupled to a feeding structure (for example, an area facing a portion of the feeding structure). For another example, the grounding end / grounding point may be a connection / coupling area on an antenna radiator that is coupled to a grounding structure.

[0097] 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 floating 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 through the open end to transfer coupling energy (which can be understood as transferring current).

[0098] In some embodiments, the "closed end" can also be understood from the perspective of current distribution. The closed end or the grounded end can be understood as a point with larger current on the radiator, or as a point with smaller electric field on the radiator. In one embodiment, the current distribution characteristics of larger current / smaller 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 / smaller electric field can be maintained by opening a gap at or near the closed end (for example, a gap filled with insulating material).

[0099] In some embodiments, the understanding of "open end" can also be viewed from the perspective of current distribution. The open end or floating end can be understood as a point with low current on the radiator, or as a point with high electric field on the radiator. In one embodiment, coupling electronic devices (for example, capacitors, inductors, etc.) through the open end can maintain the current distribution characteristics of the low current point / high electric field point.

[0100] It should be understood that coupling the radiator end at a gap (from the perspective of the radiator structure, it is similar to the radiator at the opening of the open end or the 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.

[0101] The “suspended radiator” mentioned in the embodiments of the present application means that the radiator is not directly connected to the feed line / feed branch and / or the ground line / ground branch, but is fed and / or grounded through indirect coupling.

[0102] It should be understood that the "suspended" in "suspended end" and "suspended radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the suspended radiator can be, for example, a radiator disposed on the inner surface of the insulating back cover.

[0103] The current same direction / reverse direction mentioned in the embodiments of the present application should be understood as the direction of the main current on the conductor on the same side is the same direction / reverse direction. For example, when stimulating a unidirectional distributed current on a conductor that is bent or ring-shaped (for example, the current path is also bent or ring-shaped), it should be understood that, for example, the main currents stimulated on the conductors on both sides of the ring conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) are opposite in direction, which still falls within the definition of the unidirectional distributed current in the embodiments of the present application. In one embodiment, the current same direction on a conductor can refer to the current on the conductor having no reversal point. In one embodiment, the current reverse on a conductor can refer to the current on the conductor having at least one reversal point. In one embodiment, the current same direction on two conductors can refer to the current on both conductors having no reversal point and flowing in the same direction. In one embodiment, the current reverse on two conductors can refer to the current on both conductors having no reversal point and flowing in opposite directions. The current same direction / reversal on multiple conductors can be understood accordingly.

[0104] The electric field in the embodiments of the present application is in the same direction or opposite direction, which should be understood as the direction of the main electric field generated by the conductor in the space (for example, the electric field between the conductor and the floor) being in the same direction or opposite direction. For example, when a unidirectional distributed electric field is excited on a curved or ring-shaped conductor (for example, the gap formed between the floor and the conductor is also curved or ring-shaped), it should be understood that, for example, the direction of the electric field in the gap is from the floor to the conductor, or from the conductor to the floor. Although the main electric fields excited in the gaps on both sides of the ring-shaped conductor (for example, the gaps on both sides of the gap of the conductor surrounding a gap) are opposite in direction, they still fall within the definition of unidirectional distributed electric fields in the embodiments of the present application. In one embodiment, the electric field in the same direction between a conductor and the floor can mean that there is no reversal point between the electric field between the conductor and the floor. In one embodiment, the electric field in the opposite direction between a conductor and the floor can mean that there is at least one reversal point between the electric field between the conductor and the floor. In one embodiment, the electric field in the same direction between two conductors and the floor can mean that there is no reversal point between the electric field between the two conductors and the floor, and the electric fields between the two conductors and the floor radiate in the same direction (for example, the positive direction of the z-axis). In one embodiment, the electric fields between two conductors and the floor are in opposite directions, which means that the electric fields between the two conductors and the floor have no reverse points and flow in opposite directions. The electric fields between multiple conductors and the floor can be understood to be in the same or opposite directions accordingly.

[0105] Resonance / resonance frequency: The resonant frequency is also called the resonance frequency. The resonant frequency can have a frequency range, that is, the frequency range in which resonance occurs. The frequency corresponding to the strongest resonance point is the center frequency point frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, the antenna / radiator mentioned in this application produces a "first / second... resonance", where the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or in other words, the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to the specific design, and each antenna mode can generate a corresponding fundamental mode resonance.

[0106] 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.

[0107] Communication frequency band / operating frequency band: Regardless of the type of antenna, it always operates within a certain frequency range (bandwidth). For example, an antenna that supports the B40 frequency band operates between 2300MHz and 2400MHz, or in other words, the antenna's operating frequency band includes the B40 frequency band. The frequency range that meets the required specifications can be considered the antenna's operating frequency band.

[0108] The resonant frequency band and the operating frequency band may be the same, or may partially overlap. In one embodiment, one or more resonant frequency bands of the antenna may overlap one or more operating frequency bands of the antenna.

[0109] Electrical length: It can refer to the ratio of physical length (i.e. mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0110] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0111] Wavelength: Or operating wavelength, this can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, if the center frequency of the B1 uplink frequency band (resonant frequency 1920MHz to 1980MHz) is 1955MHz, the operating wavelength can be the wavelength calculated using 1955MHz. "Operating wavelength" is not limited to the center frequency; it can also refer to the wavelength corresponding to a non-center frequency of the resonant frequency or operating frequency band.

[0112] It should be understood that the wavelength of the radiation signal in air can be calculated as follows: (wavelength in air, or wavelength in vacuum) = speed of light / frequency, where frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3×10 8 m / s. The wavelength of the radiation signal in the medium can be calculated as follows: Wherein, ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application generally refers to the dielectric wavelength, which can be the dielectric wavelength corresponding to the center frequency of the resonant frequency, or the dielectric wavelength corresponding to the center frequency of the working frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, the wavelength can be the dielectric wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "dielectric wavelength" can also refer to the dielectric wavelength corresponding to the non-center frequency of the resonant frequency or the working frequency band. For ease of understanding, the dielectric wavelength mentioned in the embodiments of the present application can be simply calculated by the relative dielectric constant of the medium filled on one or more sides of the radiator.

[0113] Those skilled in the art will understand that efficiency is generally expressed as a percentage, which has a corresponding conversion relationship with dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0114] Antenna pattern: Also known as radiation pattern. It is a graph showing how the relative field strength (normalized modulus) of the antenna's radiation field changes with direction at a certain distance from the antenna (far field). It is usually represented by two mutually perpendicular plane patterns passing through the antenna's direction of maximum radiation.

[0115] Antenna patterns typically have multiple radiation beams. The beam with the strongest radiation intensity is called the main lobe, while the remaining beams are called side lobes. Among the side lobes, those in the opposite direction of the main lobe are also called back lobes.

[0116] Directivity: Also known as the directivity of an antenna, it refers to the ratio of the maximum power density to the average power density in the antenna pattern at a certain distance from the antenna (far field). It is a dimensionless ratio greater than or equal to 1. It can be used to indicate the energy radiation characteristics of an antenna. A larger directivity indicates that the antenna radiates more energy in a certain direction and the energy radiation is more concentrated.

[0117] Antenna system efficiency (total efficiency): refers to the ratio of input power to output power at the antenna port.

[0118] Antenna radiation efficiency refers to the ratio of the power radiated by an antenna into space (i.e., the power effectively converted into electromagnetic waves) to the active power input to the antenna. Active power input to the antenna = antenna input power minus power loss; power loss primarily includes return loss and metal ohmic loss and / or dielectric loss. Radiation efficiency measures the antenna's radiation capability, and both metal loss and dielectric loss contribute to it.

[0119] Those skilled in the art will understand that efficiency is generally expressed as a percentage, which has a corresponding conversion relationship with dB. The closer the efficiency is to 0 dB, the better the efficiency of the antenna.

[0120] Antenna return loss: This can be understood as the ratio of the signal power reflected back to the antenna port by the antenna circuit to the antenna port's transmitted power. The smaller the reflected signal, the larger the signal radiated from the antenna into space, and the greater the antenna's radiation efficiency. The larger the reflected signal, the smaller the signal radiated from the antenna into space, and the lower the antenna's radiation efficiency.

[0121] Antenna return loss can be expressed using the S11 parameter, a type of S parameter. S11 represents the reflection coefficient and characterizes the antenna's transmission efficiency. The S11 parameter is typically negative. A smaller S11 parameter indicates lower antenna return loss and less energy reflected back from the antenna itself, meaning more energy actually enters the antenna and higher system efficiency. A larger S11 parameter indicates greater antenna return loss and lower system efficiency.

[0122] It should be noted that in engineering, an S11 value of -6dB is generally used as a standard. When the S11 value of an antenna is less than -6dB, it can be considered that the antenna can work normally, or the antenna can be considered to have good transmission efficiency.

[0123] Ground (GND): can generally refer to at least a part of any grounding layer, grounding plate, or grounding metal layer in an electronic device (such as a mobile phone), or at least a part of any combination of any of the above grounding layers, grounding plates, or grounding components, etc. "Ground" can be used for grounding components in an electronic device. In one embodiment, "ground" can be the grounding layer of a circuit board of an electronic device, or it can be the grounding plate formed by the middle frame of the electronic device, or the grounding metal layer formed by the metal film under the screen. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer, or 12 to 14-layer board having 8, 10, 12, 13, or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as fiberglass, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer, and a routing layer, and the routing layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, touch screen, input buttons, transmitter, processor, memory, battery, charging circuitry, and system-on-chip (SoC) structures can be mounted on or connected to a circuit board, or electrically connected to a trace layer and / or ground layer within the circuit board. For example, a radio frequency source can be located within the trace layer.

[0124] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of a conductive material. In one embodiment, the conductive material can be any of the following: copper, aluminum, stainless steel, brass, and alloys thereof, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, a graphite-coated substrate, a copper-plated substrate, a brass-plated substrate, and an aluminum-plated substrate. Those skilled in the art will appreciate that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0125] Grounding refers to coupling to the ground / floor in any manner. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding at a specific location on the frame using a portion of the midframe's structural components (or referred to as a physical ground). In one embodiment, grounding can be achieved through device grounding, such as through a series or parallel connection of a capacitor, inductor, or resistor (or referred to as a device ground).

[0126] The technical solutions of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0127] As shown in FIG1 , electronic device 10 may include a cover 13, a display / module 15, a printed circuit board (PCB) 17, a middle frame 19, and a rear cover 21. It should be understood that in some embodiments, cover 13 may be a glass cover or may be replaced with a cover made of other materials, such as a PET (Polyethylene terephthalate) material.

[0128] The cover plate 13 may be disposed closely against the display module 15 , and may be mainly used to protect the display module 15 and prevent dust.

[0129] In one embodiment, the display module 15 may include a liquid crystal display panel (LCD), a light emitting diode (LED) display panel, or an organic light-emitting diode (OLED) display panel, etc., which is not limited in the embodiment of the present application.

[0130] The middle frame 19 mainly supports the entire device. FIG1 shows that the PCB 17 is arranged between the middle frame 19 and the back cover 21. It should be understood that in one embodiment, the PCB 17 can also be arranged between the middle frame 19 and the display module 15. This embodiment of the present application does not limit this. The printed circuit board PCB 17 can be made of a flame-resistant material (FR-4) dielectric board, a Rogers dielectric board, a mixed dielectric board of Rogers and FR-4, and so on. Here, FR-4 is a code for a grade of flame-resistant material, and the Rogers dielectric board is a high-frequency board. Electronic components, such as radio frequency chips, are carried on the PCB 17. In one embodiment, a metal layer can be provided on the printed circuit board PCB 17. The metal layer can be used to ground the electronic components carried on the printed circuit board PCB 17, and can also be used to ground other components, such as bracket antennas, frame antennas, etc. The metal layer can be called a floor, a grounding plate, or a grounding layer. In one embodiment, the metal layer can be formed by etching metal on the surface of any layer of the dielectric board in the PCB 17. In one embodiment, the metal layer used for grounding can be provided on the side of the printed circuit board PCB 17 near the middle frame 19. In one embodiment, the edge of the printed circuit board PCB 17 can be considered the edge of its ground layer. In one embodiment, the metal middle frame 19 can also be used to ground the aforementioned components. The electronic device 10 may also have other floor / grounding plates / grounding layers, as previously described and will not be further described here.

[0131] Due to the compactness of electronic devices, a floor / grounding plate / grounding layer is typically provided within a 0-2mm internal space from the inner surface of the frame (for example, the printed circuit board, midframe, screen metal layer, battery, etc. can all be considered part of the floor). In one embodiment, a dielectric is filled between the frame and the floor, and the length and width of the rectangle enclosed by the inner surface contour of the dielectric filling can be simply considered the length and width of the floor. Alternatively, the length and width of the rectangle enclosed by the contour of all conductive parts within the frame can be considered the length and width of the floor.

[0132] The electronic device 10 may further include a battery (not shown). The battery may be disposed between the middle frame 19 and the back cover 21, or between the middle frame 19 and the display module 15, and this is not limited in this embodiment of the present application. In some embodiments, the PCB 17 is divided into a main board and a sub-board, and the battery may be disposed between the main board and the sub-board. The main board may be disposed between the middle frame 19 and the upper edge of the battery, and the sub-board may be disposed between the middle frame 19 and the lower edge of the battery.

[0133] 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 provided between the display module 15 and the back cover 21 and extend circumferentially around the periphery of the electronic device 10. The frame 11 may have four sides surrounding the display module 15 to help fix the display module 15. In one implementation, the frame 11 made of a conductive material may be directly used as a conductive frame of the electronic device 10, for example, to form the appearance of a metal frame, suitable for metal industrial design (ID). In one implementation, the outer surface of the frame 11 may be a conductive material, such as a metal material, thereby forming the appearance of a metal frame. In these implementations, the conductive portion of the frame 11 may be used as an antenna radiator of the electronic device 10.

[0134] 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, which is 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 provided on the inner surface of the frame 11 (or the conductive material on the inner surface) is arranged in contact with the non-conductive material of the frame 11 to facilitate antenna radiation, and both the conductive material and the non-conductive material should be regarded as part of the frame 11.

[0135] The middle frame 19 may include a border 11, and the middle frame 19 including the border 11 is an integral part that can support the electronic devices in the whole machine. The cover 13 and the back cover 21 are respectively covered along the upper and lower edges of the border to form a shell or housing (housing) of the electronic device. In one embodiment, the cover 13, the back cover 21, the border 11 and / or the middle frame 19 can be collectively referred to as the shell or housing of the electronic device 10. It should be understood that "shell or housing" can be used to refer to part or all of any one of the cover 13, the back cover 21, the border 11 or the middle frame 19, or to part or all of any combination of the cover 13, the back cover 21, the border 11 or the middle frame 19.

[0136] The frame 11 can at least partially serve as an antenna radiator to transmit and receive radio frequency signals. A gap can exist between this portion of the frame serving as the radiator and the rest of the middle frame 19 to ensure a good radiation environment for the antenna radiator. In one embodiment, the middle frame 19 can have an aperture in this portion of the frame serving as the radiator to facilitate antenna radiation.

[0137] Alternatively, the frame 11 may not be considered as part of the middle frame 19. In one embodiment, the frame 11 may be connected to the middle frame 19 and formed as one piece. In another embodiment, the frame 11 may include a protrusion extending inward to be connected to the middle frame 19, for example, by means of a shrapnel, a screw, welding, etc. The protrusion of the frame 11 can also be used to receive a feed signal, so that at least a portion of the frame 11 serves as a radiator of the antenna to receive / transmit radio frequency signals. There may be a gap 42 between this portion of the frame that serves as the radiator and the middle frame 30, thereby ensuring that the antenna radiator has a good radiation environment, so that the antenna has a good signal transmission function.

[0138] The back cover 21 can be made of metal, non-conductive materials such as glass or plastic, or a combination of conductive and non-conductive materials. In one embodiment, the conductive back cover 21 can replace the middle frame 19 and integrate with the frame 11 to support the electronic components within the device.

[0139] In one embodiment, the middle frame 19 and / or the conductive parts in the back cover 21 can serve as a reference ground for the electronic device 10, wherein the frame 11, PCB 17, etc. of the electronic device can be grounded through electrical connection with the middle frame.

[0140] The antenna of the electronic device 10 can also be set in the frame 11. When the frame 11 of the electronic device 10 is a non-conductive material, the antenna radiator can be located in the electronic device 10 and arranged along the frame 11. For example, the antenna radiator is set close to the frame 11 to minimize the volume occupied by the antenna radiator and be closer to the outside of the electronic device 10 to achieve better signal transmission effect. It should be noted that the antenna radiator is set close to the frame 11 means that the antenna radiator can be set close to the frame 11, or it can be set close to the frame 11, for example, there can be a certain small gap between the antenna radiator and the frame 11.

[0141] The antenna of electronic device 10 may also be disposed within the housing, such as a bracket antenna or millimeter-wave antenna (not shown in FIG1 ). The clearance for the antenna disposed within the housing can be provided by a slot / opening in any of the middle frame, and / or the frame, and / or the back cover, and / or the display screen, or by a non-conductive gap / aperture formed between any of these. The antenna clearance ensures the antenna's radiation characteristics. It should be understood that the antenna clearance can be a non-conductive area formed by any conductive component within electronic device 10, through which the antenna radiates signals to the outside world. In one embodiment, antenna 40 may be in the form of an antenna based on a flexible printed circuit (FPC), an antenna based on laser-direct-structuring (LDS), or a microstrip disk antenna (MDA). In one embodiment, the antenna may also be a transparent structure embedded within the screen of electronic device 10, such that the antenna is a transparent antenna unit embedded within the screen of electronic device 10.

[0142] FIG. 1 only schematically illustrates some components of the electronic device 10 , and the actual shapes, sizes, and structures of these components are not limited by FIG. 1 .

[0143] It should be understood that in the embodiments of the present application, the surface where the display screen of the electronic device is located can be considered as the front surface, the surface where the back cover is located can be considered as the back surface, and the surface where the frame is located can be considered as the side surface.

[0144] It should be understood that in the embodiments of the present application, when a user holds an electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side. It should be understood that in the embodiments of the present application, when a user holds an electronic device (usually vertically and facing the screen), the electronic device is located at a position having a top, a bottom, a left side, and a right side.

[0145] FIG2 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0146] As shown in FIG. 2 , the electronic device 10 includes a frame 11 and an antenna 200 .

[0147] It should be understood that for the sake of simplicity in the discussion, in the embodiment of the present application, only the conductive part of the frame is shown in the drawings, wherein the black part of the frame 11 serves as the radiator of the antenna in the embodiment of the present application.

[0148] The frame 11 has a first position 201 and a second position 202. The frame 11 is coupled to the floor at the first position 201 and the second position 202.

[0149] Antenna 200 includes a radiator and a feeding circuit. The radiator is a conductive portion between a first position 201 and a second position 202. The radiator includes a feeding point, and the feeding circuit is coupled to the feeding point to feed an electrical signal into antenna 200.

[0150] FIG. 3 is a directional diagram of the antenna 200 in the electronic device 10 shown in FIG. 2 .

[0151] As shown in Figure 3, antenna 200 has maximum radiation in the z-direction, with weaker radiation characteristics in directions parallel to the xoy plane. Antenna 200 has a relatively high directivity of 8.8 dBi, resulting in poor communication capabilities for electronic devices parallel to the xoy plane, impacting the user experience.

[0152] Among them, the larger the directivity coefficient, the greater the proportion of energy radiated by the antenna in a certain direction, and the more concentrated the energy radiation. When the directivity coefficient of the antenna is high, the proportion of energy radiated by the antenna in the maximum radiation direction is high, and therefore, the proportion of energy radiated by the antenna in other directions is low. When a user uses an electronic device that includes the antenna, the electronic device has good communication performance in the area near the maximum radiation direction of the antenna. When a user moves with the electronic device, and the device that transmits signals to the antenna (for example, a router) is not in the area near the maximum radiation direction of the antenna, the communication performance of the electronic device will deteriorate, affecting the user experience.

[0153] The present application provides an electronic device including an antenna. The antenna includes a first radiator formed by a portion of the electronic device's frame and a second radiator disposed adjacent to the first radiator. The antenna, through the first and second radiators, can have a low directivity coefficient, thereby improving communication performance of the electronic device.

[0154] FIG4 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0155] As shown in FIG. 4 , the electronic device 10 includes a frame 11 , an antenna 200 , and a floor 300 .

[0156] At least a portion of the frame 11 is spaced apart from the floor 300. The frame 11 includes a first position 201 and a second position 202. The frame 11 is coupled to the floor 300 at the first position 201 and the second position 202.

[0157] For the sake of simplicity, the coupling connection in the embodiments of the present application is described by taking direct coupling (electrical connection) as an example. In actual production or design, it can also be achieved through indirect coupling.

[0158] In one embodiment, first location 201 and second location 202 are coupled to floor 300 to achieve grounding of the radiator. First location 201 and second location 202 can be electrically connected to floor 300 via a spring, an inductor, or a connecting rib structure. Electrical connection to floor 300 via connecting ribs can be understood as at least a portion of frame 11 being integral with floor 300.

[0159] In one embodiment, an electronic device includes the aforementioned middle frame, which includes the aforementioned frame 11 and a middle plate. In one embodiment, the middle plate is electrically connected to the floor 300 at multiple locations. In one embodiment, the middle plate can be considered a part of the floor 300. In one embodiment, the frame 11 is electrically connected to the middle plate via a connecting rib structure (not shown). The connecting rib structure (not shown) is connected between the frame and the middle plate and is integrally formed with the frame and the middle plate.

[0160] The antenna 200 includes a first radiator 210 and a second radiator 220 .

[0161] The first radiator 210 includes a conductive portion of the frame 11 between the first position 201 and the second position 202. The second radiator 220 is spaced apart from the first radiator 210 and the floor 300. The second radiator 220 and the first radiator 210 at least partially overlap along a first direction (the projection of the second radiator 220 along the first direction onto the frame 11 at least partially overlaps with the first radiator 210). The first direction is perpendicular to the extension direction of the first radiator 210 (e.g., the y-direction).

[0162] It should be understood that the extension direction of the first radiator 210 can be understood as the extension direction of the frame where the first position 201 or the second position 202 is located. For example, if the first position 201 and the second position 202 are both located on the first side of the frame, the extension direction of the first radiator 210 is the extension direction of the first side (e.g., the x-direction). Alternatively, if the first position 201 and the second position 202 are respectively located on the first side and the second side of the frame that intersect at an angle, the extension direction of the first radiator 210 includes the extension direction of the first side (e.g., the x-direction) and the extension direction of the second side (e.g., the y-direction). The second radiator 220 and the first radiator 210 at least partially overlap along a direction perpendicular to any of the extension directions of the first radiator 210.

[0163] Meanwhile, the second radiator 220 is spaced apart from the first radiator 210 and the floor 300. This can be understood as meaning that there is no direct connection between the second radiator 220 and the first radiator 210, or between the second radiator 220 and the floor 300, and a gap is formed. In the embodiments of the present application, the spacing arrangement can be understood accordingly. The second radiator 220 and the first radiator 210 are coupled through this gap.

[0164] The ratio of the second radiator 220's dimension L2 along the second direction to its dimension L3 along the first direction is greater than 1, and the second radiator 220 may be in a sheet shape. The second direction is perpendicular to the first direction and may be the extension direction of the first radiator 210 (eg, the second direction is the x direction).

[0165] The first end and the second end of the first radiator 210 are grounded, and a structure similar to a slot antenna can be formed.

[0166] The first end of the second radiator 220 is open and the second end is grounded, forming a structure similar to a planar inverted-F antenna, as shown in FIG5 . The distance between the first end of the second radiator 220 and the first radiator 210 is smaller than the distance between the second end of the second radiator 220 and the first radiator 210.

[0167] It should be understood that the grounding of the second end of the second radiator 220 can be understood as meaning that at least a portion of the second end of the second radiator 220 is coupled to the floor 300, and this is not a limitation in the present embodiment. In one embodiment, the antenna 200 may further include a metal spring, wherein a first end of the spring is coupled to the floor 300 and a second end is coupled to the second end of the second radiator 220 for grounding. In one embodiment, a portion of the second end of the second radiator 220 may be coupled to the floor 300; for example, a portion of the edge between the second and first ends of the second radiator 220 may be grounded. In one embodiment, the entire second end of the second radiator 220 may be coupled to the floor 300.

[0168] In one embodiment, the second radiator 220 is in a sheet shape. In a first direction, a first end of the second radiator 220 is close to a first side of the first radiator 210, and a second end of the second radiator 220 is away from a second side of the first radiator 210. The first side is suspended (open) and not coupled to the floor 300, while at least a portion of the second side is coupled to the floor 300.

[0169] The edge of the second radiator 220 may be a straight line, a curve, or a broken line, and the embodiment of the present application does not limit this. For the sake of simplicity, the example of the edge being a straight line is used for description.

[0170] The distance D1 between the first radiator 210 and the second radiator 220 is less than or equal to 10 mm, so that the first radiator 210 and the second radiator 220 have good coupling characteristics and can resonate simultaneously. In one embodiment, the distance D1 between the first radiator 210 and the second radiator 220 is less than or equal to 5 mm.

[0171] It should be understood that the distance D1 between the first radiator 210 and the second radiator 220 can be understood as the minimum value of the distance between a point on the first radiator 210 and a point on the second radiator 220 .

[0172] In one embodiment, the first radiator 210 and the second radiator 220 can be used to generate a first resonance. A distance D1 between the first radiator 210 and the second radiator 220 is less than or equal to a quarter of a first wavelength, where the first wavelength is a wavelength corresponding to the first resonance.

[0173] It should be understood that since the coupling characteristics between the first radiator 210 and the second radiator 220 are frequency-dependent, the distance between the first radiator 210 and the second radiator 220 can also be determined based on the actual operating frequency band of the antenna 200. The higher the frequency of the operating frequency band, the closer the distance, and the lower the frequency of the operating frequency band, the farther the distance. Furthermore, the first wavelength, which is the wavelength corresponding to the first resonance, can be understood as the vacuum wavelength corresponding to the resonant point frequency of the first resonance, or the vacuum wavelength corresponding to the center frequency of the resonant frequency band. Since there is a certain correspondence between the vacuum wavelength and the medium wavelength (operating wavelength), the medium wavelength (operating wavelength) can be determined from the vacuum wavelength.

[0174] The technical solution provided in the embodiment of the present application forms a new antenna structure by setting a first radiator 210 and a second radiator 220 adjacent to each other (for example, the distance D1 is less than or equal to 10 mm or one-quarter of the first wavelength). The first radiator 210 and the second radiator 220 are used to generate a composite antenna pattern (generated by the first radiator and the second radiator together, not by a single radiator) with a low directivity coefficient, so that the electronic device 10 has good communication performance in all directions.

[0175] In one embodiment, the resonance point frequency of the first resonance is greater than or equal to 0.7 GHz and less than or equal to 6 GHz.

[0176] In one embodiment, the first radiator 210 and the second radiator 220 may be configured to generate a first resonance. At a resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300.

[0177] It should be understood that since the first radiator 210 can form a structure similar to a slot antenna, the second radiator 220 can form a structure similar to a planar inverted-F antenna. The maximum radiation direction of the slot antenna is opposite to the maximum radiation direction of the planar inverted-F antenna (for example, the maximum radiation direction of the slot antenna is in the screen direction (for example, the positive direction of the z direction (z>0)), and the maximum radiation direction of the planar inverted-F antenna is in the back cover direction (for example, the negative direction of the z direction (z<0)). Since the electric field between the first radiator 210 and the second radiator 220 and the electric field between the first radiator 210 and the floor 300 can both generate a magnetic field parallel to the floor 300 (for example, parallel to the xoy plane), the radiation characteristics of the antenna in the direction parallel to the floor 300 (for example, parallel to the xoy plane) are improved. Therefore, the antenna 200 can have a low directivity coefficient, so that the electronic device 10 has good communication performance in all directions.

[0178] In one embodiment, the resonant frequency band of the first resonance may include a first frequency band. In one embodiment, the first frequency band may include a 2.4 GHz frequency band or a 5 GHz frequency band of WiFi. In one embodiment, the 2.4 GHz frequency band may include 2.4 GHz to 2.4835 GHz. In one embodiment, the 5 GHz frequency band may include 5.17 GHz to 5.33 GHz.

[0179] In one embodiment, the ratio of the length of the overlapping portion of the first radiator 210 and the second radiator 220 along the first direction (the overlapping portion of the projection of the second radiator 220 along the first direction on the frame 11 and the first radiator 210) to the length of the first radiator 210 is greater than or equal to 30%. In one embodiment, the ratio of the length of the overlapping portion of the first radiator 210 and the second radiator 220 along the first direction (the overlapping portion of the projection of the second radiator 220 along the first direction on the frame 11 and the first radiator 210) to the length of the first radiator 210 is greater than or equal to 50%.

[0180] In one embodiment, the first radiator 210 and the second radiator 220 completely overlap along the first direction.

[0181] It should be understood that when the above ratio is greater than or equal to 30%, the first radiator 210 and the second radiator 220 can have better coupling characteristics, and the antenna 200 has better radiation characteristics. When the first radiator 210 and the second radiator 220 completely overlap along the first direction, the coupling characteristics between the first radiator 210 and the second radiator 220 are optimal.

[0182] When the first position 201 and the second position 202 are respectively located at the first side and the second side of the frame that intersect at an angle, the extension direction of the first radiator 210 includes the extension direction of the first side (for example, the x direction) and the extension direction of the second side (for example, the y direction). The length of the overlapping part can be understood as the sum of the length of the overlapping part in the extension direction of the first side (for example, the x direction) and the length of the overlapping part in the extension direction of the second side (for example, the y direction).

[0183] In one embodiment, the length L1 of the first radiator 210 and the dimension L2 of the second radiator along the second direction (eg, the x direction) satisfy: L1×50%≤L2≤L1×200%.

[0184] It should be understood that when the length L1 of the first radiator 210 and the dimension L2 of the second radiator 220 along the second direction are within the above range, it is conducive to the generation of a composite mode of the first radiator 210 and the second radiator 220, and the radiation characteristics of the antenna 200 at the first resonance can be improved.

[0185] In one embodiment, the first radiator 210 may operate in a half-wavelength mode, and the electrical length of the first radiator 210 may be half of the first wavelength.

[0186] In one embodiment, the second radiator 220 may operate in a half-wavelength mode, wherein the electrical length of the second radiator 220 along the first direction is one quarter of the first wavelength.

[0187] In one embodiment, when the electronic components coupled to the first radiator 210 / the second radiator 220 can increase or decrease their physical length while maintaining the same electrical length, the length L1 of the first radiator 210 and the dimension L3 of the second radiator along the first direction (e.g., the y direction) satisfy the following relationship: L1×25%≤L3≤L1×75%.

[0188] In one embodiment, the size of the second radiator 220 along the first direction may be greater than or equal to 2 mm and less than or equal to 25 mm.

[0189] In one embodiment, the size of the second radiator 220 along the first direction may be greater than or equal to one twenty-fifth of the first wavelength and less than or equal to one half of the first wavelength.

[0190] It should be understood that the size of the second radiator 220 along the first direction can be used to adjust the coupling between the first radiator 210 and the second radiator 220 , thereby adjusting the resonance point frequency of the first resonance generated by the composite mode.

[0191] In one embodiment, a ratio of a dimension L2 of the second radiator 220 along the second direction to a dimension L3 of the second radiator 220 along the first direction is greater than 1 and less than or equal to 3.

[0192] It should be understood that the increase in the dimension L2 of the second radiator 220 along the second direction (eg, the x-direction) can improve the radiation efficiency and system efficiency of the antenna 200 .

[0193] At the same time, the first radiator 210 may have a structure similar to a slot antenna, and the second radiator 220 may have a structure similar to a PIFA, which is beneficial to the generation of a composite mode of the first radiator 210 and the second radiator 220 .

[0194] In one embodiment, the antenna 200 may further include a bracket, and the second radiator 220 may be located on a surface of the bracket. In one embodiment, the second radiator 220 may be located on a surface of the electronic device 10, for example, on a surface facing the PCB.

[0195] In one embodiment, the antenna 200 may further include a feeding circuit 230 . The second radiator 220 may include a feeding point 221 , and the circuit 230 is coupled to the feeding point 221 to feed an electrical signal to the antenna 200 .

[0196] In one embodiment, the electronic device 10 may be an electronic device with a large display screen, such as a tablet computer, a smart screen, a laptop computer, etc.

[0197] Figures 6 to 9 are simulation results of antenna 200 in electronic device 10 shown in Figure 4. Figure 6 is a simulation result of the S parameters of antenna 200 shown in Figure 4. Figure 7 is a simulation result of the radiation efficiency and system efficiency of antenna 200 shown in Figure 4. Figure 8 is a directional pattern of antenna 200 shown in Figure 4 at the resonance point of the first resonance (e.g., 5.2 GHz). Figure 9 is a schematic diagram of the electric field distribution of antenna 200 shown in Figure 4 at the resonance point of the first resonance (e.g., 5.2 GHz).

[0198] As shown in Figure 6, the antenna can resonate near 2.8 GHz, 5.2 GHz, and 5.8 GHz. The resonance near 5.2 GHz is the first resonance in the above embodiment, and the resonant frequency band of the first resonance may include the 5G frequency band of WiFi.

[0199] As shown in Figure 7, in the 5G frequency band of WiFi, the antenna has good radiation efficiency and system efficiency.

[0200] As shown in FIG8 , the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficient of the antenna is 3.7 dBi, which enables the electronic device to have good communication performance in all directions.

[0201] As shown in FIG9 , at the resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is in the opposite direction to the electric field between the first radiator 210 and the floor 300. The electric field between the first radiator 210 and the second radiator 220 is directed from the first radiator 210 to the second radiator 220, for example, along the negative direction of the y-axis. The electric field between the first radiator 210 and the floor 300 is directed from the floor 300 to the first radiator 210, for example, along the positive direction of the y-axis.

[0202] Since the electric field between the first radiator 210 and the second radiator 220 and the electric field between the first radiator 210 and the floor 300 can both generate magnetic fields parallel to the floor 300 (for example, parallel to the xoy plane), for example, the directions of the magnetic fields are the same, along the positive direction of the z-axis, thereby improving the radiation characteristics of the antenna in a direction parallel to the floor 300 (for example, parallel to the xoy plane).

[0203] In one embodiment, a magnetic field parallel to the floor 300 (e.g., parallel to the xoy plane) can be generated, so that the null point of the directivity pattern is not located circumferentially of the electronic device, thereby improving the radiation characteristics of the antenna in a direction parallel to the floor 300 (e.g., parallel to the xoy plane). The null point of the directivity pattern can be understood as the point where the amplitude of the directivity pattern is minimum.

[0204] FIG10 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0205] As shown in FIG. 10 , the first radiator 210 may include a feeding point 221 , and the feeding circuit 230 is coupled to the feeding point 221 .

[0206] It should be understood that the antenna 200 shown in FIG10 differs from the antenna 200 shown in FIG4 only in the location of the feed point 221. In the antenna 200 shown in FIG10 , the feed point 221 is located on the first radiator 210, while in the antenna 200 shown in FIG4 , the feed point 221 is located on the second radiator 220. Both different feed point 221 configurations can achieve the same technical effect.

[0207] For the sake of simplicity, parts of the antenna 200 shown in FIG10 that are similar to those of the antenna 200 shown in FIG4 will not be repeated one by one, for example, the position of the first radiator 210 and its positional relationship with the second radiator 220; the proportional relationship between the physical lengths of the first radiator 210 and the second radiator 220; the first radiator 210 and the second radiator 220 being used to generate a first resonance; at the resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300, etc.

[0208] Figures 11 to 13 show simulation results for antenna 200 in electronic device 10 shown in Figure 10. Figure 11 shows the S-parameter simulation results for antenna 200 shown in Figure 10. Figure 12 shows the radiation efficiency and system efficiency simulation results for antenna 200 shown in Figure 10. Figure 13 shows the directional pattern of antenna 200 shown in Figure 10 at the first resonant point (e.g., 5.2 GHz).

[0209] As shown in Figure 11, the antenna can resonate near 2.9 GHz, 5.2 GHz, and 5.8 GHz. The resonance near 5.2 GHz is the first resonance in the above embodiment, and the resonant frequency band of the first resonance may include the 5G frequency band of WiFi.

[0210] As shown in Figure 12, in the 5G frequency band of WiFi, the antenna has good radiation efficiency and system efficiency.

[0211] As shown in FIG13 , at the resonance point of the first resonance (eg, 5.2 GHz), the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficient of the antenna is 2.04 dBi, which enables the electronic device to have good communication performance in all directions.

[0212] FIG14 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0213] As shown in FIG14 , the antenna 200 may further include a feeding branch 240 . The feeding branch 240 is spaced apart from the first radiator 210 , the second radiator 220 , and the floor 300 . The feeding branch 240 includes a feeding point 221 , and the feeding circuit 230 is coupled to the feeding point 221 .

[0214] In one embodiment, the distance between the first radiator 210 and the feeding branch 240 is less than or equal to 5 mm, and / or the distance between the feeding branch 240 and the second radiator 220 is less than or equal to 5 mm, so that the feeding branch 240 has good coupling characteristics with the first radiator 210 and the second radiator 220, and can stimulate the first radiator 210 and the second radiator 220 to produce resonance.

[0215] It should be understood that the distance between the first radiator 210 or the second radiator 220 and the feeding branch 240 can be understood as the minimum value of the distance between a point on the radiator and a point on the feeding branch 240 .

[0216] In one embodiment, the first and second ends of the feed branch 240 may be open ends. In one embodiment, the first end of the feed branch 240 is a ground end and the second end is an open end. In one embodiment, the first and second ends of the feed branch 240 may be ground ends.

[0217] It should be understood that in the embodiment of the present application, the feed branch 240 is electrically connected to the feed circuit 230, and the feed branch 240 resonates with the first radiator 210 and the second radiator 220 through indirect coupling. The embodiment of the present application does not limit the boundary conditions of the feed branch 240 (whether it is coupled to the floor 300) and can be determined based on actual production or design.

[0218] In one embodiment, the feeding branch 240 may be in a sheet shape, a strip shape, or other shapes, which is not limited in this embodiment of the present application.

[0219] It should be understood that the antenna 200 shown in FIG14 differs from the antenna 200 shown in FIG4 only in the location of the feed point 221. In the antenna 200 shown in FIG14, the feed point 221 is located on the feed branch 240, while in the antenna 200 shown in FIG4, the feed point 221 is located on the second radiator 220. Both different feed point 221 configurations can achieve the same technical effect.

[0220] For the sake of simplicity, parts of the antenna 200 shown in FIG14 that are similar to those of the antenna 200 shown in FIG4 will not be repeated one by one, for example, the position of the first radiator 210 and its positional relationship with the second radiator 220; the proportional relationship between the physical lengths of the first radiator 210 and the second radiator 220; the first radiator 210 and the second radiator 220 being used to generate a first resonance; at the resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300, etc.

[0221] Figures 15 to 17 are simulation results of antenna 200 in electronic device 10 shown in Figure 14. Figure 15 shows the simulation results of the S parameters of antenna 200 shown in Figure 14. Figure 16 shows the simulation results of the radiation efficiency and system efficiency of antenna 200 shown in Figure 14. Figure 17 shows the directional pattern of antenna 200 shown in Figure 14 at the first resonance point (e.g., 5.2 GHz).

[0222] As shown in Figure 15, the antenna can resonate near 3 GHz, 5.2 GHz, and 5.8 GHz. The resonance near 5.2 GHz is the first resonance in the above embodiment, and the resonant frequency band of the first resonance may include the 5G frequency band of WiFi.

[0223] As shown in Figure 16, in the 5G frequency band of WiFi, the antenna has good radiation efficiency and system efficiency.

[0224] As shown in FIG17 , at the resonance point of the first resonance (eg, 5.2 GHz), the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficient of the antenna is 2.81 dBi, which enables the electronic device to have good communication performance in all directions.

[0225] It should be understood that in the electronic device 10 shown in Figures 4, 10 and 14, the antenna 200 can use different feeding methods (in the technical solution shown in Figure 4, the feeding circuit 230 is electrically connected to the second radiator 220; in the technical solution shown in Figure 10, the feeding circuit 230 is electrically connected to the first radiator 210; in the technical solution shown in Figure 14, the feeding circuit 230 is electrically connected to the feeding branch 240), so that the radiation characteristics of the antenna 200 in all directions are roughly the same, and have the characteristics of a low directivity coefficient.

[0226] Figures 18 to 20 show further simulation results for antenna 200 in electronic device 10 shown in Figure 14 . Figure 18 shows the S-parameter simulation results for antenna 200 shown in Figure 14 . Figure 19 shows the radiation efficiency and system efficiency simulation results for antenna 200 shown in Figure 14 . Figure 20 shows the directional pattern of antenna 200 shown in Figure 14 at the first resonant point (e.g., 5.2 GHz).

[0227] It should be understood that in the antenna 200 shown in FIG14 , the first radiator 210 and the second radiator 220 can also be used to generate a second resonance (for example, in the above simulation results, the second resonance can be a resonance generated near 3 GHz), and the resonant frequency of the second resonance is lower than the resonant frequency of the first resonance. The resonant frequency band of the second resonance can include the second frequency band.

[0228] When the electrical parameters of the antenna 200 are changed (for example, the size of the second radiator 220 along the second direction, the distance between the first radiator 210 and the second radiator 220, etc.), the coupling amount between the first radiator 210 and the second radiator 220 can be controlled, thereby adjusting the resonant frequency of the resonance generated by the antenna 200. In one embodiment, the resonant point frequency of the second resonance can be adjusted by the above-mentioned electrical parameters. In one embodiment, the first frequency band may include the 5G frequency band of WiFi, and the second frequency band may include the 2.4G frequency band of WiFi. The antenna 200 can operate simultaneously in different frequency bands of WiFi to improve the communication performance of the electronic device 10.

[0229] For the sake of simplicity, the antenna 200 in the electronic device 10 shown in FIG14 is used as an example for description. The invention can also be applied to other technical solutions provided in the embodiments of the present application, and will not be described in detail one by one.

[0230] As shown in Figure 18, the antenna can resonate near 2.4 GHz, 5.2 GHz, and 5.8 GHz. The resonance near 5.2 GHz is the first resonance in the above embodiment, and the resonant frequency band of the first resonance may include the 5G frequency band of WiFi. The resonance near 2.4 GHz is the second resonance in the above embodiment, and the resonant frequency band of the second resonance may include the 2.4G frequency band of WiFi.

[0231] As shown in Figure 19, the antenna has good radiation efficiency and system efficiency in the 5G WiFi band. However, in the 2.4G WiFi band, the antenna's radiation efficiency and system efficiency are slightly lower than those in the 5G WiFi band.

[0232] As shown in FIG20 , at the resonance point of the first resonance (eg, 5.2 GHz), the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficient of the antenna is 2.8 dBi, which enables the electronic device to have good communication performance in all directions.

[0233] FIG21 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0234] As shown in FIG21 , the antenna 200 may further include an electronic component 241 . The electronic component 241 is coupled between the first radiator 210 and the second radiator 220 .

[0235] It should be understood that the electronic component 241 can be used to control the coupling between the first radiator 210 and the second radiator 220, thereby adjusting the resonant frequency of the resonance generated by the antenna 200. In one embodiment, the electronic component 241 can adjust the resonant point frequency of the second resonance. In one embodiment, the first frequency band may include the 5G frequency band of WiFi, and the second frequency band may include the 2.4G frequency band of WiFi. The antenna 200 can operate simultaneously in different WiFi frequency bands to improve the communication performance of the electronic device 10.

[0236] For the sake of simplicity, the antenna 200 shown in FIG. 14 is used as an example for description. The technical solution shown in FIG. 21 can also be applied to the antenna 200 shown in FIG. 4 and FIG. 10 .

[0237] At the same time, the difference between the antenna 200 shown in Figure 21 and the antenna 200 shown in Figure 14 is only the electronic component 241. The parts of the antenna 200 shown in Figure 21 that are similar to the antenna 200 shown in Figure 14 will not be repeated one by one, for example, the position of the first radiator 210 and its positional relationship with the second radiator 220; the proportional relationship between the physical lengths of the first radiator 210 and the second radiator 220; the first radiator 210 and the second radiator 220 are used to generate a first resonance; at the resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300, etc.

[0238] Figures 22 to 24 are simulation results of antenna 200 in electronic device 10 shown in Figure 21. Figure 22 shows the simulation results of the S parameters of antenna 200 shown in Figure 21. Figure 23 shows the simulation results of the radiation efficiency and system efficiency of antenna 200 shown in Figure 21. Figure 24 shows the directional pattern of antenna 200 shown in Figure 21 at the first resonance point (e.g., 5.2 GHz).

[0239] As shown in Figure 22, the antenna can resonate near 2.4 GHz, 5.2 GHz, 6 GHz, and 7 GHz. The resonance near 5.2 GHz is the first resonance in the above embodiment, and the resonant frequency band of the first resonance may include the 5G frequency band of WiFi. The resonance near 2.4 GHz is the second resonance in the above embodiment, and the resonant frequency band of the second resonance may include the 2.4G frequency band of WiFi.

[0240] As shown in Figure 23, the antenna has good radiation efficiency and system efficiency in the 5G WiFi band. However, in the 2.4G WiFi band, the antenna's radiation efficiency and system efficiency are slightly lower than those in the 5G WiFi band.

[0241] As shown in FIG24 , at the resonance point of the first resonance (eg, 5.2 GHz), the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficient of the antenna is 2.81 dBi, which enables the electronic device to have good communication performance in all directions.

[0242] FIG25 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0243] As shown in FIG25 , the antenna 200 may further include a parasitic branch 250. The feeding branch 240 is located between the second radiator 220 and the parasitic branch 250. The parasitic branch 250 is spaced apart from the feeding branch 240 and the floor 300.

[0244] The ratio of the size of the parasitic stub 250 along the second direction (eg, x-direction) to the size of the parasitic stub 250 along the first direction (eg, y-direction) is greater than 1, and the parasitic stub 250 may be in a sheet shape.

[0245] The first end of the parasitic stub 250 is open, and the second end is grounded, forming a structure similar to a planar inverted-F antenna. In one embodiment, the distance between the first end of the parasitic stub 250 and the frame 11 is less than the distance between the second end of the parasitic stub 250 and the frame 11. The end of the parasitic stub 250 closest to the frame 11 can be open, and the end farther from the frame 11 can be grounded.

[0246] It should be understood that when the feed circuit 230 feeds an electrical signal, the parasitic branch 250 may generate a parasitic resonance. The resonant frequency band of the parasitic resonance may include a third frequency band. The antenna 200 may utilize the parasitic resonance to expand the operating bandwidth.

[0247] Moreover, the efficiency (for example, radiation efficiency and system efficiency) of the parasitic resonance generated by the parasitic branch 250 is higher than the efficiency of the second resonance generated by the first radiator 210 and the second radiator 220. Compared with the second resonance, using the resonant frequency band of the parasitic resonance as the communication frequency band can improve the radiation characteristics of the antenna in this frequency band.

[0248] In one embodiment, a ratio between a size of the parasitic stub 250 along the second direction and a size of the parasitic stub 250 along the first direction is greater than 1 and less than or equal to 3.

[0249] In one embodiment, the distance between the parasitic stub 250 and at least one of the feeding stub 240 , the first radiator 210 , and the second radiator 220 is less than or equal to 5 mm.

[0250] It should be understood that for the sake of simplicity, only the antenna 200 shown in Figure 14 is used as an example for explanation, and the technical solution shown in Figure 25 can also be applied to the antenna 200 shown in Figures 4 and 10.

[0251] At the same time, the difference between the antenna 200 shown in Figure 25 and the antenna 200 shown in Figure 14 is only the parasitic branch 250. The parts of the antenna 200 shown in Figure 25 that are similar to the antenna 200 shown in Figure 14 will not be repeated one by one, for example, the position of the first radiator 210 and its positional relationship with the second radiator 220; the proportional relationship between the physical lengths of the first radiator 210 and the second radiator 220; the first radiator 210 and the second radiator 220 are used to generate a first resonance; at the resonance point of the first resonance, the electric field between the first radiator 210 and the second radiator 220 is opposite to the electric field between the first radiator 210 and the floor 300, etc.

[0252] Figures 26 to 29 are simulation results of the antenna 200 in the electronic device 10 shown in Figure 25. Figure 26 is a simulation result of the S parameters of the antenna 200 shown in Figure 25. Figure 27 is a simulation result of the radiation efficiency and system efficiency of the antenna 200 shown in Figure 25. Figure 28 is a directional pattern of the antenna 200 shown in Figure 25 at the resonant point of the parasitic resonance (e.g., 2.4 GHz). Figure 29 is a directional pattern of the antenna 200 shown in Figure 25 at the resonant point of the first resonance (e.g., 5.2 GHz).

[0253] As shown in Figure 26, the antenna can resonate near 2.4 GHz, 3 GHz, 4 GHz, 5.2 GHz, 5.8 GHz, 6.5 GHz, and 7.2 GHz. The resonance near 5.2 GHz is the first resonance in the above embodiment, and the resonant frequency band of the first resonance may include the 5G frequency band of WiFi. The resonance near 3 GHz is the second resonance in the above embodiment. The resonance near 2.4 GHz is the parasitic resonance in the above embodiment, and the resonant frequency band of the parasitic resonance may include the 2.4G frequency band of WiFi.

[0254] As shown in Figure 27, the antenna has good radiation efficiency and system efficiency in the 5G WiFi frequency band. It also has good radiation efficiency and system efficiency in the 2.4G WiFi frequency band.

[0255] As shown in FIG28 , at the resonant point of the parasitic resonance (eg, 2.4 GHz), the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficient of the antenna is 4.21 dBi, which enables the electronic device to have good communication performance in all directions.

[0256] As shown in FIG29 , at the resonance point of the first resonance (eg, 5.2 GHz), the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficient of the antenna is 3.89 dBi, which enables the electronic device to have good communication performance in all directions.

[0257] FIG30 is a schematic diagram of another electronic device 10 provided in an embodiment of the present application.

[0258] As shown in FIG. 30 , the ratio of the dimension L2 of the second radiator 220 along the second direction to the dimension L3 of the second radiator 220 along the first direction is greater than 3.

[0259] In one embodiment, a ratio of a dimension L2 of the second radiator 220 along the second direction to a dimension L3 of the second radiator 220 along the first direction is greater than or equal to 6.

[0260] It should be understood that as the ratio between the dimension L2 of the second radiator 220 along the second direction and the dimension L3 of the second radiator 220 along the first direction increases (for example, reducing the dimension L2 of the second radiator 220 along the second direction, and / or increasing the dimension L3 of the second radiator 220 along the first direction), the bandwidth of the antenna 200 in the resonant frequency band of the first resonance (for example, with S11<-4dB as the limit) increases, which can enable the electronic device 10 to operate in more frequency bands.

[0261] Figures 31 to 34 show simulation results for antenna 200 in electronic device 10 shown in Figure 30. Figure 31 shows the S-parameter simulation results for antenna 200 shown in Figure 30. Figure 32 shows the radiation efficiency and system efficiency simulation results for antenna 200 shown in Figure 30. Figure 33 shows the directional pattern of antenna 200 shown in Figure 30 at 5.2 GHz. Figure 34 shows the directional pattern of antenna 200 shown in Figure 30 at 5.8 GHz.

[0262] As shown in Figure 31, the antenna can resonate near 4 GHz, 5.5 GHz, 6.4 GHz, and 7.2 GHz. The resonance near 5.5 GHz is the first resonance in the above embodiment, and the resonant frequency band of the first resonance may include the 5G frequency band of WiFi.

[0263] With S11<-2dB as the limit, the resonant frequency band of the antenna can include 5GHz-7.5GHz, which has a relatively wide resonant frequency band.

[0264] As shown in Figure 32, in the 5 GHz-7.5 GHz frequency band, the antenna has good radiation efficiency and system efficiency.

[0265] As shown in Figure 33 and Figure 24, at 5.2GHz and 5.8GHz, the radiation characteristics of the antenna in all directions are roughly the same, and the directivity coefficients of the antenna are 3.67dBi and 4.11dBi respectively, which can enable electronic devices to have good communication performance in all directions.

[0266] It should be understood that the technical solution provided in the embodiment of the present application can be applied to electronic devices under an all-metal ID (metal is provided around the antenna 200, for example, metal parts, display screens, frames, back covers, etc.). In one embodiment, the metal provided around the antenna 200 at least partially overlaps with the first radiator or the second radiator along the first direction, the second direction or the third direction (the direction perpendicular to the second radiator). In an all-metal ID, the antenna 200 utilizes the assembly gap between structural parts (or electronic components) and structural parts (or electronic components), or the insulating gap on the structural parts (or electronic components) to radiate, and can have good radiation characteristics, and is less affected by the metal provided around it, thereby avoiding the opening of the conductive (for example, metal) appearance surface of the electronic device, which is beneficial to improving the overall appearance and aesthetics of the electronic device.

[0267] FIG35 is a schematic diagram of an electronic device 10 provided in an embodiment of the present application.

[0268] As shown in FIG35( a ), the electronic device 10 may be a personal computer (PC). The PC 10 may include a display portion 301 and a keyboard portion 302. It should be understood that the display portion 301 and the keyboard portion 302 are rotatably connected, and the display portion 301 and the keyboard portion 302 can rotate along the connection portion to position the display portion 301 and the keyboard portion 302 at different angles. In one embodiment, the display portion 301 and the keyboard portion 302 are removable and reassembleable.

[0269] The display screen portion 301 may include a display module 3011 and a housing 3012 , as shown in (b) of FIG. 35 .

[0270] The display module 3011 may include a display area and a fixed area, the fixed area may be located around the display area, and the fixed area may be used to connect to the housing 3012. In one embodiment, the display module 3011 may include only the display area.

[0271] The housing 3012 may include the frame 11 of the above-described embodiment, and a back cover 21 connected to the frame 11. The frame 11 may be formed of a conductive material such as metal. The frame 11 may extend circumferentially around the periphery of the electronic device 10. The frame 11 may have four sides surrounding the display module 3011 to help secure the display module 3011.

[0272] In one embodiment, a gap is formed between the frame 11 and the four sides of the display module 3011, and the gap can be filled with colloid to securely connect the frame 11 to the display module 3011. In addition, the gap can also help improve the radiation performance of the antenna.

[0273] In one embodiment, the frame 11 and the back cover 21 can be an integral structure and made of all metal. In one embodiment, the frame 11 can be made of metal and the back cover 21 can be made of non-metal.

[0274] The antenna 200 provided in the embodiment of the present application can be located in the display screen portion 301, as shown in (a) in Figure 35.

[0275] The first radiator 210 in the antenna 200 may be part of the frame 11, and the second radiator 210 may be located between the back cover 21 and the display module 3011, as shown in (c) of Figure 35. In one embodiment, the first radiator 210 and the second radiator 220 may be located between the fixed area of ​​the display module 3011 and the back cover 21.

[0276] It should be understood that in the above embodiments, for the sake of simplicity of discussion, the electronic device 10 is only taken as an example of a mobile phone. In actual production or design, the electronic device 10 may also be other types of electronic devices 10, such as a smart screen.

[0277] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An electronic device, characterized in that: include: floor; a frame, at least a portion of which is spaced apart from the floor, the frame comprising a first position and a second position, the frame being coupled to the floor at the first position and the second position; An antenna, comprising: a first radiator, the first radiator comprising a conductive portion of the frame between the first position and the second position; a second radiator, the second radiator being spaced apart from the first radiator and the floor, and a projection of the second radiator on the frame along a first direction at least partially overlapping with the first radiator, wherein the first direction is a direction perpendicular to an extension direction of the first radiator; The first radiator and the second radiator are used to generate a first resonance, and a distance D1 between the first radiator and the second radiator is less than or equal to 10 mm or a quarter of a first wavelength, and the first wavelength is a wavelength corresponding to the first resonance; A ratio between a size L2 of the second radiator along a second direction X and a size L3 of the second radiator along the first direction Y is greater than 1, and the second direction is an extension direction of the first radiator; The first end of the second radiator is an open end, and the second end is a ground end. The distance between the first end of the second radiator and the first radiator is smaller than the distance between the second end of the second radiator and the first radiator.

2. The electronic device according to claim 1, characterized in that: The length L1 of the first radiator and the dimension L2 of the second radiator along the second direction satisfy: L1×50%≤L2≤L1×200%.

3. The electronic device according to claim 1 or 2, characterized in that: A ratio between a dimension L2 of the second radiator along the second direction X and a dimension L3 of the second radiator along the first direction Y is less than or equal to 3.

4. The electronic device according to any one of claims 1 to 3, characterized in that: A size of the second radiator along the first direction is greater than or equal to one twenty-fifth of the first wavelength and less than or equal to one half of the first wavelength.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The resonance point frequency of the first resonance is greater than or equal to 0.7 GHz and less than or equal to 6 GHz.

6. The electronic device according to claim 5, characterized in that: A size of the second radiator along the first direction is greater than or equal to 2 mm and less than or equal to 25 mm.

7. The electronic device according to any one of claims 1 to 6, characterized in that: The antenna further includes an electronic component coupled between the first radiator and the second radiator.

8. The electronic device according to any one of claims 1 to 7, characterized in that: A ratio of a length of a projection of the second radiator on the frame along the first direction and an overlapping portion of the first radiator to a length of the first radiator is greater than or equal to 30%.

9. The electronic device according to any one of claims 1 to 8, characterized in that: The second radiator is in a sheet shape. In the first direction, the first end of the second radiator is close to the first side of the first radiator, the second end of the second radiator is far away from the second side of the first radiator, the first side is suspended, and at least part of the second side is coupled to the floor.

10. The electronic device according to any one of claims 1 to 9, characterized in that: The antenna further includes a feeding circuit, one of the first radiator and the second radiator includes a feeding point, and the feeding circuit is coupled to the feeding point.

11. The electronic device according to any one of claims 1 to 9, characterized in that: The antenna also includes a feeding circuit and a feeding branch; The feeding branch is spaced apart from the first radiator, the second radiator and the floor, the feeding branch includes a feeding point, and the feeding circuit is coupled to the feeding point.

12. The electronic device according to any one of claims 1 to 11, characterized in that: The first radiator and the second radiator are also used to generate a second resonance, the resonance frequency of the second resonance is lower than the resonance frequency of the first resonance, the resonance frequency range of the first resonance includes a first frequency range, and the resonance frequency range of the second resonance includes a second frequency range.

13. The electronic device according to claim 12, characterized in that: The first frequency band includes a 5G frequency band of WiFi, and the second frequency band includes a 2.4G frequency band of WiFi.

14. The electronic device according to claim 11, characterized in that: The antenna further comprises a parasitic branch, wherein the feeding branch is located between the parasitic branch and the second radiator; Wherein, the first end of the parasitic branch is a grounded end, and the second end of the parasitic branch is an open end; A ratio between a size of the parasitic branch along the first direction and a size of the parasitic branch along the second direction is greater than 1.

15. The electronic device according to claim 14, characterized in that: The parasitic branch is used to generate a parasitic resonance, the resonant frequency of the parasitic resonance is lower than the resonant frequency of the first resonance, the resonant frequency band of the first resonance includes a first frequency band, and the resonant frequency band of the parasitic resonance includes a third frequency band.

16. The electronic device according to claim 15, characterized in that: The resonant frequency band of the first resonance includes a first frequency band, the first frequency band includes a 5G frequency band of WiFi, and the third frequency band includes a 2.4G frequency band of WiFi.

17. The electronic device according to any one of claims 1 to 16, characterized in that: At the resonance point of the first resonance, the electric field between the first radiator and the second radiator is opposite to the electric field between the first radiator and the floor.

18. The electronic device according to any one of claims 1 to 17, characterized in that: At the resonance point of the first resonance, the magnetic field between the first radiator and the second radiator and the magnetic field between the first radiator and the floor are parallel to the floor.

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