Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a first radiator, a second radiator, a first feed source and a first switch tuning circuit. The first radiator comprises a first grounding point, a first connecting point and a first free end; the second radiator comprises a second free end, a second connecting point, a second grounding point, a third connecting point and a third free end, and a first coupling gap is formed between the second free end and the first free end; the first feed source is electrically connected with the first connection point or the second connection point; the first switch tuning circuit is electrically connected with the third connection point and is used for switching to enable the first radiator and the second radiator to have first current distribution or switching to enable the first radiator and the second radiator to have second current distribution; the first current distribution is that a same-direction current is formed between the first grounding point and the third free end; the second current distribution forms a same-direction current between the first grounding point and the second grounding point so as to improve the communication performance of the antenna assembly.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an antenna assembly and an electronic device. Background Art

[0002] With the development of 5G and 6G communication technologies, mobile terminals need to support more and more frequency bands. The number of antennas in mobile terminals is increasing rapidly. With the development of satellite communications, more and more mobile terminals support satellite communications. Mobile terminals still have poor performance in some scenarios (such as when placed on the head to make a call, in certain weak field conditions, or when a certain direction is blocked). Therefore, how to improve the communication performance of antenna components has become a technical problem that needs to be solved. Summary of the invention

[0003] The present application provides an antenna assembly for improving the communication performance of the antenna assembly and an electronic device having the antenna assembly.

[0004] In a first aspect, an embodiment of the present application provides an antenna assembly, the antenna assembly comprising:

[0005] A first radiator, wherein the first radiator comprises a first ground point, a first connection point, and a first free end;

[0006] A second radiator, the second radiator comprising a second free end, a second connection point, a second grounding point, a third connection point and a third free end, and a first coupling gap is formed between the second free end and the first free end;

[0007] a first feed source, the first feed source being electrically connected to the first connection point or the second connection point;

[0008] A first switch tuning circuit, wherein the first switch tuning circuit is electrically connected to the third connection point, and the first switch tuning circuit is used to switch the first radiator and the second radiator to have a first current distribution or a second current distribution, wherein the first current distribution forms a unidirectional current between the first grounding point and the third free end; and the second current distribution forms a unidirectional current between the first grounding point and the second grounding point.

[0009] An antenna assembly provided in an embodiment of the present application includes a first radiator, a second radiator, a first feed source, and a first switch tuning circuit. The first radiator includes a first grounding point, a first connection point, and a first free end; the second radiator includes a second free end, a second connection point, a second grounding point, a third connection point, and a third free end, and a first coupling gap is formed between the second free end and the first free end; the first feed source is electrically connected to the first connection point or the second connection point; the first switch tuning circuit is electrically connected to the third connection point, and the first switch tuning circuit is used to switch the first radiator and the second radiator to have a first current distribution or a second current distribution, the first current distribution is to form a unidirectional current between the first grounding point and the third free end; the second current distribution is to form a unidirectional current between the first grounding point and the second grounding point, and the formation of the unidirectional current can improve the working efficiency of the antenna, and the first switch tuning circuit switches the first radiator and the second radiator to have a first current distribution or a second current distribution, and different current distributions are conducive to forming different main radiation ranges to improve the communication performance of the antenna assembly.

[0010] In a second aspect, an embodiment of the present application provides an antenna assembly, the antenna assembly comprising:

[0011] A first radiator, wherein the first radiator comprises a first ground point, a first connection point, and a first free end;

[0012] A second radiator, the second radiator comprising a second free end, a second connection point, a second grounding point, a third connection point and a third free end, and a first coupling gap is formed between the second free end and the first free end;

[0013] A first switch unit, one end of which is electrically connected to the first connection point or the second connection point;

[0014] a first feed source, the first feed source being electrically connected to the other end of the first switch unit;

[0015] a second switch unit, one end of which is electrically connected to the third connection point;

[0016] a second feed source, the second feed source being electrically connected to the other end of the second switch unit;

[0017] The first switch unit and the second switch unit are used to switch the first radiator and the second radiator, and have a first current distribution supporting the first frequency band and a third current distribution supporting the first frequency band. The first current distribution forms a unidirectional current between the first grounding point and the third free end; the third current distribution includes forming a unidirectional current between the second free end and the third free end.

[0018] An embodiment of the present application provides an antenna assembly, which includes a first radiator, a second radiator, a first feed source, a first switch unit, a second feed source, and a second switch unit. The first radiator includes a first grounding point, a first connection point, and a first free end; the second radiator includes a second free end, a second connection point, a second grounding point, a third connection point and a third free end, and a first coupling gap is formed between the second free end and the first free end; one end of the first switch unit is electrically connected to the first connection point or the second connection point; the first feed is electrically connected to the other end of the first switch unit; one end of the second switch unit is electrically connected to the third connection point; the second feed is electrically connected to the other end of the second switch unit; the first switch unit and the second switch unit are used to switch the first radiator and the second radiator to have a first current distribution supporting the first frequency band and a third current distribution supporting the first frequency band, the first current distribution is to form a unidirectional current between the first grounding point and the third free end; the third current distribution includes forming a unidirectional current between the second free end and the third free end, and the formation of the unidirectional current can improve the working efficiency of the antenna, the first switch unit and the second switch unit switch the first radiator and the second radiator to have the first current distribution or the second current distribution, and different current distributions are conducive to forming different main radiation ranges to improve the communication performance of the antenna assembly.

[0019] In a third aspect, an electronic device provided by an embodiment of the present application includes a top frame and the antenna assembly described in the first aspect and the second aspect, wherein the first radiator and the second radiator are disposed on the top frame.

[0020] In a fourth aspect, an embodiment of the present application further provides an electronic device, comprising a frame and an antenna assembly provided on the frame, wherein the frame comprises a top frame, a first side frame, a bottom frame and a second side frame connected in sequence;

[0021] The antenna assembly includes a radiating branch, a first feed source and a second feed source; the radiating branch includes a first feed point and a second feed point arranged at intervals, the first feed point is located at the top frame, the first feed point is located between the second feed point and the first side frame, the second feed point is located between the first feed point and the second side frame, the first feed source can selectively turn on or off the first feed point, and the second feed source can selectively turn on or off the second feed point; when the electronic device is in a first posture, the first feed source switches to turn on the first feed point to support a first frequency band; when the electronic device is in a second posture, the second feed source switches to turn on the second feed point to support the first frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0023] Figure 1 is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0024] Figure 2 is a partial exploded schematic diagram of an electronic device provided in an embodiment of the present application;

[0025] Figure 3 It is a partial back view of the electronic device provided in an embodiment of the present application, with the back cover removed, including the first antenna assembly;

[0026] Figure 4 It is a partial back view of the electronic device provided in an embodiment of the present application, with the back cover removed, including the second antenna assembly;

[0027] Figure 5 is a schematic diagram of a first current distribution of a first antenna assembly provided in an embodiment of the present application;

[0028] Figure 6 is a schematic diagram of a second current distribution of a first antenna assembly provided in an embodiment of the present application;

[0029] Figure 7 is a schematic diagram of a first switching tuning circuit in a first antenna assembly provided in an embodiment of the present application in a first tuning state;

[0030] Figure 8 is a schematic diagram of a first switch tuning circuit in a first antenna assembly provided in an embodiment of the present application being in a second tuning state;

[0031] Fig. 9 is a schematic diagram of a second first switch tuning circuit in a first antenna assembly provided in an embodiment of the present application being in a first tuning state;

[0032] Fig.10 is a schematic diagram of a second first switch tuning circuit in a first antenna assembly provided in an embodiment of the present application being in a second tuning state;

[0033] Fig.11 is a structural schematic diagram of a first tuning circuit provided in an embodiment of the present application;

[0034] Fig.12 is a structural schematic diagram of a second first tuning circuit provided in an embodiment of the present application;

[0035] Fig.13 is a schematic diagram of a third first switch tuning circuit in a first antenna assembly provided in an embodiment of the present application in a first tuning state;

[0036] Fig.14 is a schematic diagram of a third first switch tuning circuit in a first antenna assembly provided in an embodiment of the present application being in a second tuning state;

[0037] Fig.15 is a schematic diagram of a third antenna assembly provided in an embodiment of the present application;

[0038] Fig.16 is a schematic diagram of a fourth antenna assembly provided in an embodiment of the present application;

[0039] Fig.17 is a schematic diagram of a fifth antenna assembly provided in an embodiment of the present application forming a first current distribution;

[0040] Fig.18 is a schematic diagram of a sixth antenna assembly provided in an embodiment of the present application;

[0041] Fig.19 is a schematic diagram of a third current distribution formed by a fifth antenna assembly provided in an embodiment of the present application;

[0042] Fig. 20 is a schematic diagram of a fifth antenna assembly provided in an embodiment of the present application forming a first current distribution in a first switching state;

[0043] Fig.21 is a schematic diagram of a fifth antenna assembly provided in an embodiment of the present application forming a third current distribution in a second switching state;

[0044] Fig. 22 is a schematic diagram of a fifth antenna assembly provided in an embodiment of the present application forming a first current distribution in a third switching state;

[0045] Fig.23 is a schematic diagram of a fifth antenna assembly provided in an embodiment of the present application forming a third current distribution in a fourth switching state;

[0046] Fig.24 It is an S curve when the first feed source provided in the embodiment of the present application excites the first radiator and the second radiator to form a first current distribution and a second current distribution;

[0047] Fig.25 is a schematic diagram of a fifth antenna assembly provided in an embodiment of the present application forming a second current distribution in a fifth switching state;

[0048] Fig.26 It is a schematic diagram of a second current distribution formed on a first radiator and a second radiator stimulated by a first feed source provided in an embodiment of the present application;

[0049] Fig. 27It is a schematic diagram of a first current distribution formed on a first radiator and a second radiator stimulated by a first feed source provided in an embodiment of the present application;

[0050] Fig.28 The radiation efficiency and total efficiency curves of the first current distribution and the first current distribution formed on the first radiator and the second radiator by the first feed source provided in the embodiment of the present application;

[0051] Fig.29 The first feed source provided in the embodiment of the present application excites the first radiator and the second radiator to form a 3D directional diagram of the second current distribution;

[0052] Fig.30 The first feed source provided in the embodiment of the present application excites the first radiator and the second radiator to form a 3D directional diagram of the first current distribution;

[0053] Fig.31 is a schematic diagram of a fifth antenna assembly provided in an embodiment of the present application forming a third current distribution in a sixth switching state;

[0054] Fig.32 is a schematic diagram of a fifth antenna assembly provided in an embodiment of the present application forming a fourth current distribution in a seventh switching state;

[0055] Fig.33 It is an S curve when the second feed source provided in the embodiment of the present application excites the second radiator and the third radiator to form a third current distribution and a fourth current distribution;

[0056] Fig.34 is a structural schematic diagram of an antenna assembly provided by an embodiment of the present application further comprising a second switching tuning circuit;

[0057] Fig.35 It is a schematic diagram of a fourth current distribution formed on the second radiator and the third radiator stimulated by the second feed source provided in an embodiment of the present application;

[0058] Fig.36 It is a schematic diagram of a third current distribution formed on the second radiator and the third radiator stimulated by a third feed source provided in an embodiment of the present application;

[0059] Fig.37 The radiation efficiency and total efficiency curves of the fourth current distribution formed on the second radiator and the third radiator stimulated by the second feed source provided in the embodiment of the present application;

[0060] Fig.38 The second feed source provided in the embodiment of the present application excites the second radiator and the third radiator to form a 3D directional diagram of a fourth current distribution;

[0061] Fig.39The second feed source provided in the embodiment of the present application excites the second radiator and the third radiator to form a 3D directional diagram of a third current distribution;

[0062] Fig.40 is a structural schematic diagram of a seventh antenna assembly provided in an embodiment of the present application;

[0063] Fig.41 It is a structural schematic diagram of an electronic device provided by an embodiment of the present application, in which a radiation branch of an antenna assembly is arranged on a first top frame when the electronic device is a foldable device in an unfolded state;

[0064] Fig.42 is a structural schematic diagram of an electronic device provided in an embodiment of the present application that is a foldable device and the rotating shaft is in an unfolded state along the width direction;

[0065] Fig.43 This is a structural schematic diagram of the electronic device provided by an embodiment of the present application being a foldable device, in which, when in an unfolded form, a portion of the radiating branch of the antenna assembly is located at a first top frame, and another portion of the radiating branch is located at a second top frame.

[0066] Description of Figure Numbers:

[0067] Electronic device 1000; antenna assembly 100; display screen 200; middle frame 300; back cover 400; middle plate 310; frame 320; top frame 321; bottom frame 324; first side frame 322; second side frame 323; main board 600; sub-board 800; reference ground system 500; first feed source 21; first radiator 11; first free end E1; first connection point A1; first grounding point D1; first matching circuit M1; first coupling gap G1; second radiator 12; second free End E2; second connection point A2; second grounding point D2; third connection point A3; third free end E3; second coupling gap G2; third radiator 13; fourth free end E4; third grounding point D3; first switch unit 42; second switch unit 43; third switch unit 44; first switch tuning circuit 31; first tuning switch 311; first tuning circuit 312; second tuning circuit 313; first switch module 41; second feed source 22; third feed source 23; third tuning circuit 325. DETAILED DESCRIPTION

[0068] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present application.

[0069] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0070] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example: a component or device including one or more parts is not limited to the one or more parts listed, but optionally includes one or more parts that are not listed but inherent to the exemplified product, or one or more parts that it should have based on the described function.

[0071] See also Figure 1 , Figure 1 1 is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of the present application. The electronic device 1000 includes but is not limited to a mobile phone, a tablet computer, a laptop computer, a computer, a wearable device, a drone, a robot, a digital camera, and other devices with communication functions. The present embodiment of the application is described by taking a mobile phone as an example, and other electronic devices can refer to this embodiment.

[0072] See also Figure 2 , Figure 2 1 is a partial exploded schematic diagram of an electronic device 1000 provided in an embodiment of the present application. The working environment of the antenna assembly 100 is illustrated by taking the electronic device 1000 as a mobile phone as an example. The electronic device 1000 includes a display screen 200, a middle frame 300 and a back cover 400 arranged in sequence along the thickness direction. Among them, the middle frame 300 includes a middle plate 310 and a frame 320 surrounding the side of the middle plate 310. The frame 320 is a conductive frame, such as a metal frame. A receiving space is formed between the display screen 200 and the middle plate 310, and between the middle plate 310 and the back cover 400 to accommodate components such as a main board 600, a camera module, a receiver module, a battery 700, a sub-board 800 and various sensors. One side of the frame 320 along the thickness direction is surrounded by the edge of the display screen 200, and the other side of the frame 320 along the thickness direction is surrounded by the edge of the back cover 400 to form a complete appearance structure of the electronic device 1000. In this embodiment, the frame 320 and the middle plate 310 are an integral structure, and the frame 320 and the back cover 400 are separate structures. The above is the working environment of the antenna assembly 100 taking a mobile phone as an example, but the antenna assembly 100 of the present application is not limited to the above working environment.

[0073] See also Figure 3 , Figure 3 It is a partial back view of the electronic device 1000 provided in an embodiment of the present application without the back cover 400. The frame 320 includes a top frame 321, a bottom frame 324, and a first side frame 322 and a second side frame 323 connected to the top frame 321 and the bottom frame 324. Among them, the top frame 321 is the side away from the ground when the user holds the electronic device 1000 and uses the screen vertically, and the bottom frame 324 is the side facing the ground when the user holds the electronic device 1000 and uses the screen vertically. The first side frame 322 is the left side when the user holds the electronic device 1000 and uses the screen vertically. The second side frame 323 is the right side when the user holds the electronic device 1000 and uses the screen vertically. Of course, the first side frame 322 can also be the right side when the user holds the electronic device 1000. The second side frame 323 is the left side when the user holds the electronic device 1000.

[0074] Optionally, the top frame 321 is a straight frame, the first side frame 322 and the second side frame 323 are both straight frames in the middle, and the two ends are bent frames, wherein the bending angles of the bent frames at the two ends of the first side frame 322 are close to or 90°. The bending angles of the bent frames at the two ends of the second side frame 323 are close to or 90°. The bent frames are curved in an arc. The bottom frame 324 is a straight frame.

[0075] See also Figure 2 , the electronic device 1000 also includes a reference ground system 500. The reference ground system 500 is arranged in the frame 320. The shape of the reference ground system 500 is roughly rectangular. Because devices are set up in the mobile phone as needed or other structures are avoided, various grooves, holes, etc. are opened on the reference ground edge of the reference ground system 500. The reference ground system 500 includes but is not limited to the metal alloy part of the middle plate 310 and the reference ground metal part of the circuit board (including the main board 600 and the sub-board 800). Roughly speaking, the reference ground system in the electronic device 1000 can be equivalent to a rough rectangle, so it is called the reference ground system 500. Among them, the reference ground system 500 does not indicate that the shape of the reference ground is plate-shaped and is a rectangular plate.

[0076] The specific structure of the antenna assembly 100 provided in the first embodiment is described below with reference to the accompanying drawings.

[0077] See also Figure 3 and Figure 4 The antenna assembly 100 includes a radiation branch, a first feed source 21 and a first switch tuning circuit 31. The radiation branch includes a first radiator 11 and a second radiator 12.

[0078] The present application does not specifically limit the material of the first radiator 11. Optionally, the material of the first radiator 11 is a conductive material, including but not limited to conductive materials such as metals and alloys. The present application does not specifically limit the shape of the first radiator 11. For example, the shape of the first radiator 11 includes but is not limited to a strip, a sheet, a rod, a coating, a film, etc. Figure 3 The first radiator 11 shown is only an example and does not limit the shape of the first radiator 11 provided in the present application. In the present embodiment, the first radiator 11 is in a strip shape. The present application does not limit the extension trajectory of the first radiator 11. Optionally, the first radiator 11 may extend along a straight line, or along a curve, or along a bending line. The first radiator 11 may be a line with uniform width on the extension trajectory, or may be a strip with unequal width such as a gradient width and a widened area.

[0079] The present application does not specifically limit the form of the first radiator 11. Optionally, the form of the first radiator 11 includes but is not limited to a metal frame 320, a metal frame embedded in a plastic frame 320, a metal radiator located in or on the frame 320, a flexible printed circuit board antenna formed on a flexible printed circuit board (FPC), a laser direct structured antenna by laser direct structure (LDS), a printed direct structured antenna by printing direct structure (PDS), a conductive sheet antenna (such as a metal bracket antenna), etc. In this embodiment, the first radiator 11 is taken as a part of the metal frame 320 of the electronic device 1000 as an example.

[0080] See also Figure 3 and Figure 4 The first radiator 11 includes a first free end E1, a first connection point A1 and a first grounding point D1.

[0081] The free end mentioned in the present application refers to an end that is disconnected from other conductive parts on the frame 320 through an insulating gap and disconnected from the reference ground system 500. In order to ensure the structural strength of the frame 320 of the electronic device 1000, the insulating gap is filled with insulating material.

[0082] The grounding point described in the present application is electrically connected to the reference ground system 500, wherein the electrical connection method includes but is not limited to returning the ground point to the ground through a grounding spring; or, the grounding point and the reference ground system 500 are interconnected as a whole, that is, through a physical return to the ground method.

[0083] The first connection point A1 is located between the first free end E1 and the first grounding point D1. The present application does not limit the specific position of the first connection point A1. Optionally, the first connection point A1 can be a bump protruding toward the reference ground system 500 on the inner side of the frame 320.

[0084] The material, shape, form, etc. of the second radiator 12 may refer to the material, shape, form, etc. of the first radiator 11 .

[0085] See also Figure 3 and Figure 4 The second radiator 12 includes a second free end E2, a second connection point A2, a second ground point D2, a third connection point A3 and a third free end E3. A first coupling gap G1 is formed between the second free end E2 and the first free end E1.

[0086] The present application does not specifically limit the size of the first coupling gap G1. Optionally, the spacing of the first coupling gap G1 is 0.5 to 2 mm, but is not limited to this size. When the first radiator 11 and the second radiator 12 are both part of the frame 320, the first coupling gap G1 is a gap opened on the frame 320. In addition, the first coupling gap G1 is filled with an insulating material to ensure the structural strength of the frame 320. The first radiator 11 and the second radiator 12 can generate capacitive coupling through the first coupling gap G1. The first radiator 11 and the second radiator 12 can be regarded as two parts of the frame 320 separated by the first coupling gap G1. Among them, "capacitive coupling" means that the first coupling gap G1 between the first radiator 11 and the second radiator 12 generates an electric field, and the signal of the first radiator 11 can be transmitted to the second radiator 12 through the electric field, and the signal of the second radiator 12 can be transmitted to the first radiator 11 through the electric field, so that the first radiator 11 and the second radiator 12 can achieve electrical signal conduction even when they are not directly electrically connected.

[0087] The first feed source 21 includes but is not limited to a radio frequency transceiver chip, etc. The first feed source 21 is disposed on the main board 600 .

[0088] See also Figure 3 and Figure 4 , the first feed source 21 is electrically connected to the first connection point A1 or the second connection point A2. The electrical connection described in the present application includes a direct electrical connection between two structures, or an indirect electrical connection through other components. In this embodiment, the first feed source 21 is indirectly electrically connected to the first connection point A1 through other electronic components.

[0089] The first feed source 21 is configured to provide an RF excitation current of a required frequency band. The RF signal output port of the first feed source 21 is a feed port, which includes but is not limited to being electrically connected to the first connection point A1 on the frame 320 (e.g., a bump on the inner side of the frame 320) by indirect means such as welding, or by a coaxial line, or by a microstrip line, or by a conductive spring, or by a conductive screw. In this embodiment, the first feed source 21 is electrically connected to the first connection point A1 through a feed spring (conductive spring) provided on the mainboard.

[0090] Optionally, the first feed source 21 is configured to provide a radio frequency excitation signal in a first frequency band.

[0091] Optionally, the first radiator 11 and the second radiator 12 are configured to support the first frequency band. The present application is not limited to the RF excitation signal of the first frequency band forming a current mode of 1 / 4 wavelength, 1 / 2 wavelength, 3 / 4 wavelength, 1 wavelength, etc. n*1 / 4 wavelength on the first radiator 11 and the second radiator 12.

[0092] Optional, see Figure 3 , the antenna assembly 100 includes a first matching circuit M1. Taking the first feed 21 electrically connected to the first connection point A1 as an example, the first matching circuit M1 is electrically connected between the first feed 21 and the first connection point A1. The first matching circuit M1 includes at least one of a capacitor and an inductor. The first matching circuit M1 helps the first feed 21 to excite the first resonant mode on the first radiator 11 and the second radiator 12 by adjusting the impedance matching between the first feed 21 port (the aforementioned feeding port) and the first radiator 11 port.

[0093] The application does not specifically limit the size of the first frequency band. Optionally, the first frequency band includes, but is not limited to, at least one of the LB frequency band (less than 1 GHz), the MHB frequency band (1-3 GHz), the UHB frequency band (greater than 3 GHz), the Wi-Fi frequency band, the GPS frequency band, and the satellite communication frequency band. The application takes the first frequency band as the satellite communication frequency band as an example. Take the first radiator 11 and the second radiator 12 as part or all of the top frame 321 of the electronic device 1000 as an example.

[0094] See also Figure 5 and Figure 6 The first switch tuning circuit 31 is electrically connected to the third connection point A3. The first switch tuning circuit 31 is used to switch to make the first radiator 11 and the second radiator 12 have a first current distribution, or the first switch tuning circuit 31 is used to switch to make the first radiator 11 and the second radiator 12 have a second current distribution. Figure 5 and Figure 6 The dashed arrows in the figure represent the current distribution.

[0095] In an alternative embodiment, see Figure 5 , the first switch tuning circuit 31 is used to switch the first radiator 11 and the second radiator 12 to have a first current distribution. The first current distribution is to form a unidirectional current between the first grounding point D1 and the third free end E3. In other words, unidirectional currents are formed on both the first radiator 11 and the second radiator 12. That is, when the antenna assembly operates in the first frequency band, the first radiator 11 and the second radiator 12 are unidirectional currents, the radiation field is less destructive, and the radiation field is more superimposed, so as to improve the gain of the directional pattern; on the other hand, the first current distribution covers the first radiator 11 and the second radiator 12. It can be seen that the antenna assembly has a larger radiation aperture when operating in the first frequency band to improve the radiation efficiency. In addition, since the first radiator 11 and the second radiator 12 are arranged on the top frame 321, it can promote the directional pattern to the side where the top is located, increase the upper hemisphere share, and facilitate communication with satellite equipment in the sky.

[0096] In another alternative embodiment, see Figure 6 , the first switch tuning circuit 31 is used to switch the first radiator 11 and the second radiator 12 to have a second current distribution. The second current distribution is to form a unidirectional current between the first grounding point D1 and the second grounding point D2. Part of the first radiator 11 and the second radiator 12 are unidirectional currents, the radiation field is less destructive, and the radiation field is more superimposed, so as to improve the gain of the directional pattern. On the other hand, since the second current distribution is different from the first current distribution, the current position and path are different on the electronic device 1000, so the main radiation range of the antenna assembly 100 in the first current distribution is different from the main radiation range in the second current distribution. The first switch tuning circuit 31 realizes the function of switching the main radiation range of the antenna assembly 100 in the first frequency band. For some weak field scenes, head-to-head phone scenes, handheld scenes, and scenes where a certain direction is blocked, the first switch tuning circuit 31 is used to switch to the main radiation range in the first frequency band to obtain better communication performance.

[0097] An antenna assembly 100 provided in an embodiment of the present application includes a first radiator 11, a second radiator 12, a first feed source 21, and a first switch tuning circuit 31. The first radiator 11 includes a first grounding point D1, a first connection point, and a first free end E1; the second radiator 12 includes a second free end E2, a second connection point, a second grounding point D2, a third connection point A3, and a third free end E3, and a first coupling gap G1 is formed between the second free end E2 and the first free end E1; the first feed source 21 is electrically connected to the first connection point A1 or the second connection point A2; the first switch tuning circuit 31 is electrically connected to the third connection point A3, and the first switch tuning circuit 31 is used to switch the first radiator 11 and the third free end E2. The two radiators 12 have a first current distribution or a second current distribution. The first current distribution is a unidirectional current formed between the first grounding point D1 and the third free end E3; the second current distribution is a unidirectional current formed between the first grounding point D1 and the second grounding point D2. The formation of the unidirectional current can improve the working efficiency of the antenna. The first switch tuning circuit 31 switches the first radiator 11 and the second radiator 12 to have the first current distribution or the second current distribution. Different current distributions are conducive to forming different main radiation ranges to improve the communication performance of the antenna assembly 100.

[0098] Optionally, the first switch tuning circuit 31 has a first tuning state and a second tuning state. The present application is not limited to the first tuning state and the second tuning state being an off state and an on state, nor is it limited to the first tuning state and the second tuning state being two states with different impedance values ​​(different capacitors and inductors). In other words, the first switch tuning circuit 31 has different equivalent electrical lengths in the first tuning state and the second tuning state, thereby making the total electrical length between the second grounding point D2 and the third free end E3 different, and further making the resonant frequency between the second grounding point D2 and the third free end E3 different.

[0099] The total electrical length between the second grounding point D2 and the third free end E3 is the sum of the electrical length of a portion of the second radiator 12 between the second grounding point D2 and the third free end E3 and the equivalent electrical length of the first switch tuning circuit 31 in the first tuning state.

[0100] See also Figure 5 When the first switch tuning circuit 31 is in the first tuning state, a first resonance mode supporting a first frequency band is formed on the first radiator 11 and the second radiator 12. The current distribution of the first resonance mode is the first current distribution.

[0101] Optionally, taking the first feed source 21 electrically connected to the first connection point A1 as an example, the first radiator 11 is a main radiator, the second radiator 12 is a parasitic radiator, and the first feed source 21 excites the first ground point D1 to the first free end E1 to form a 1 / 4 wavelength mode supporting the first frequency band. Specifically, the equivalent electrical length of the first radiator 11 is close to or is 1 / 4 wavelength of the center frequency of the first frequency band, so as to excite the first ground point D1 and the first free end E1 to form a current mode supporting 1 / 4 wavelength of the first frequency band. The close to described in this article is floating up and down 1 / 10 wavelength.

[0102] The electrical length described in this application can satisfy the following formula:

[0103]

[0104] Where L is the physical length, a is the transmission time of the electrical or electromagnetic signal in the medium, and b is the transmission time in a free scene.

[0105] In other words, the first feed source 21 is configured to excite the first radiator 11 to support the first frequency band. After the RF excitation signal of the first frequency band is transmitted to the first radiator 11, it can excite the first radiator 11 to generate a resonant current and form a resonant mode to support the frequency band corresponding to the resonant current.

[0106] Since the first radiator 11 and the second radiator 12 are coupled via the first coupling gap G1, in the first tuning state of the first switch tuning circuit 31, the electrical length of the second radiator 12 between the second ground point D2 and the third free end E3 is close to 1 / 2 wavelength of the center frequency of the first frequency band, and the total electrical length between the second ground point D2 and the third free end E3 is greater than 1 / 4 wavelength of the center frequency of the first frequency band (i.e., in the first tuning state of the first switch tuning circuit 31, the resonant frequency between the second ground point D2 and the third free end E3 is less than the center frequency of the first frequency band), so as to facilitate the second radiator 12 to form a 1 / 2 wavelength resonant mode supporting the first frequency band under the excitation of the first feed source 21.

[0107] In other words, a 1 / 4 wavelength mode+1 / 2 wavelength mode supporting the first frequency band is formed on the first radiator 11 and the second radiator 12 , so as to form a first current distribution of current in the same direction on the first radiator 11 and the second radiator 12 .

[0108] Furthermore, the second radiator 12 is in the form of a T-shaped antenna. The 1 / 2 wavelength unidirectional current on the second radiator 12 is conducive to forming the main radiation direction of the second radiator 12 away from the reference floor under the reflection of the floor current, that is, the directional diagram from the top frame 321 side upward, which increases the upper hemisphere share and facilitates communication with satellite equipment in the sky.

[0109] Optional, please refer to Figure 4 Antenna structure and Figure 5 The current distribution in the circuit, taking the case where the first feed source 21 is electrically connected to the second connection point A2 as an example, the second radiator 12 is the main radiator, and the first radiator 11 is the parasitic radiator. In the first tuning state of the first switch tuning circuit 31, the electrical length of the second radiator 12 between the second grounding point D2 and the third free end E3 is close to 1 / 2 wavelength of the center frequency of the first frequency band, and the total electrical length between the second grounding point D2 and the third free end E3 is greater than 1 / 4 wavelength of the center frequency of the first frequency band, so that the second radiator 12 forms a 1 / 2 wavelength resonance mode supporting the first frequency band under the excitation of the first feed source 21. Specifically, the equivalent electrical length of the second radiator 12 is close to or equal to 1 / 2 wavelength of the center frequency of the first frequency band, so as to excite the formation of a current mode supporting 1 / 2 wavelength of the first frequency band between the second free end E2 and the third free end E3.

[0110] Since the first radiator 11 and the second radiator 12 are coupled via the first coupling gap G1, a 1 / 4 wavelength mode supporting the first frequency band is formed on the first radiator 11. In other words, a 1 / 4 wavelength mode + a 1 / 2 wavelength mode supporting the first frequency band are formed on the first radiator 11 and the second radiator 12, so as to form a first current distribution of the same direction current on the first radiator 11 and the second radiator 12.

[0111] Furthermore, the second radiator 12 is in the form of a T-shaped antenna. The 1 / 2 wavelength unidirectional current on the second radiator 12 is conducive to forming a main radiation direction of the second radiator 12 away from the reference ground system 500 under the current reflection effect on the reference ground system 500, that is, a directional diagram from the top frame 321 side upward, thereby increasing the upper hemisphere share and facilitating communication with satellite equipment in the sky.

[0112] See also Figure 6 When the first switch tuning circuit 31 is in the second tuning state, a second resonance mode supporting the first frequency band is formed on the first radiator 11 and the second radiator 12. The current distribution of the second resonance mode is the second current distribution.

[0113] Optionally, taking the first feed source 21 electrically connected to the first connection point A1 as an example, the first radiator 11 is the main radiator, and the second radiator 12 is the parasitic radiator. In this embodiment, no resonant current or a weak resonant current is formed between the second grounding point D2 and the third free end E3 in the second tuning state of the first switch tuning circuit 31. At this time, the second grounding point D2 and the third free end E3 do not serve as a parasitic radiator. A 1 / 4 wavelength mode + a 1 / 4 wavelength mode supporting the first frequency band is formed on the first radiator 11 and the second radiator 12, and a second current distribution of the same direction current is formed on the first radiator 11 and the second radiator 12. When the antenna assembly 100 is arranged on the top frame 321 of the electronic device 1000, the second current distribution is arranged at a position slightly to the left of the top frame 321, and the second current distribution of the antenna assembly 100 forms a directional pattern slightly to the top and the left, forming a different radiation coverage range from the first current distribution of the antenna assembly 100.

[0114] The design of the radiation section between the second ground point D2 and the third free end E3 in the present application includes but is not limited to the following implementations.

[0115] In a first alternative implementation, see Figure 7 and Figure 8 , the first resonant frequency corresponding to the electrical length between the second grounding point D2 and the third free end E3 is less than the center frequency of the first frequency band, and the difference between the first resonant frequency and the center frequency of the first frequency band is less than or equal to a preset frequency range, and the difference between the first resonant frequency and the center frequency of the first frequency band is less than or equal to a preset frequency range. The first tuning state is a state disconnected from the reference ground system 500.

[0116] Specifically, when the first switch tuning circuit 31 is in the first tuning state, the total electrical length of the first switch tuning circuit 31 and the second grounding point D2 to the third free end E3 is the first equivalent electrical length. According to the resonant frequency calculation formula: f=1 / [2π√(LC)], the resonant frequency of the overall resonant circuit formed by the first switch tuning circuit 31 and the second grounding point D2 to the third free end E3 can be obtained. This embodiment defines the resonant frequency of the overall resonant circuit formed by the first switch tuning circuit 31 and the second grounding point D2 to the third free end E3 at this time as the first resonant frequency.

[0117] Specifically, the resonance frequency corresponding to the total electrical length of the overall resonance circuit formed by the first switch tuning circuit 31 and the second ground point D2 to the third free end E3 is less than the center frequency of the first frequency band. In other words, the total electrical length of the overall resonance circuit formed by the first switch tuning circuit 31 and the second ground point D2 to the third free end E3 is greater than 1 / 4 wavelength of the center frequency of the first frequency band (for example, 2 GHz).

[0118] And the difference between the center frequency of the first frequency band and the first resonant frequency is less than or equal to a preset frequency range. The present application does not specifically limit the preset frequency range. Optionally, the preset frequency range includes but is not limited to 1 GHz. In other words, the difference between the center frequency of the first frequency band and the first resonant frequency is less than or equal to 1 GHz, 0.9 GHz, 0.8 GHz, 0.7 GHz, 0.6 GHz, 0.5 GHz, 0.4 GHz, 0.3 GHz, 0.2 GHz, 0.1 GHz.

[0119] When the first resonant frequency satisfies the above conditions, a 1 / 4 wavelength mode supporting the first frequency band is formed on the first radiator 11, and a 1 / 2 wavelength mode supporting the first frequency band is formed between the second free end E2 and the third free end E3 of the second radiator 12, and the current distribution on the first radiator 11 and the second radiator 12 is the first current distribution. At this time, the second ground point D2 to the third free end E3 of the second radiator 12 can serve as a parasitic branch of the first radiator 11 and form a parasitic resonance, and the resonance point when the second ground point D2 to the third free end E3 of the second radiator 12 forms a parasitic resonance is the aforementioned first resonance point.

[0120] In this embodiment, the resonant frequency corresponding to the electrical length between the second grounding point D2 and the third free end E3 is designed to be smaller than the center frequency of the first frequency band, so that a current in the same direction as that between the second free end E2 and the second grounding point D2 is formed between the second grounding point D2 and the third free end E3, thereby facilitating the formation of a balanced mode similar to a T antenna, and facilitating the radiation direction toward the top frame 321. The difference between the first resonant frequency and the center frequency of the first frequency band is designed to be smaller than or equal to the preset frequency range, so that the resonant frequency of the resonant mode between the second grounding point D2 and the third free end E3 is similar to the resonant mode supporting the first frequency band between the first grounding point D1 and the third free end E3, which is conducive to improving the efficiency of the first frequency band; in addition, the resonant frequency of the resonant mode between the second grounding point D2 and the third free end E3 and the resonant mode supporting the first frequency band between the first grounding point D1 and the third free end E3 can form a double-wave resonance to support a wider bandwidth, cover the first frequency band, and reduce the risk of frequency deviation.

[0121] For example, taking the center frequency of the first frequency band as 2.2 GHz, the first resonant frequency between the first ground point D1 and the third free end E3 includes but is not limited to 2.0-2.2 GHz (for example, 2.13 GHz), so that the antenna assembly 100 can work better in the Tiantong satellite frequency band.

[0122] In a second alternative implementation, see Fig. 9 and Fig.10, the second resonant frequency corresponding to the electrical length between the second grounding point D2 and the third free end E3 is greater than or equal to the center frequency of the first frequency band, and at this time, the resonant current cannot be excited on the second grounding point D2 and the third free end E3, that is, the second grounding point D2 and the third free end E3 cannot serve as parasitic branches of the first radiator 11. Specifically, the first switch tuning circuit 31 includes a first tuning switch 311 and a first tuning circuit 312. The second tuning state is that the first tuning switch 311 turns on the first tuning circuit 312 and the third connection point A3. The first tuning state can be that the first tuning switch 311 disconnects the electrical connection between the first tuning circuit 312 and the third connection point A3. At this time, the second resonant frequency corresponding to the electrical length between the first tuning circuit 312, the second grounding point D2 and the third free end E3 is greater than or equal to the center frequency of the first frequency band, and the second resonant frequency is tuned to a difference between the center frequency of the first frequency band and less than or equal to a preset frequency range.

[0123] Specifically, when the first switch tuning circuit 31 is in the second tuning state, the total electrical length of the first switch tuning circuit 31 and the second grounding point D2 to the third free end E3 is the second equivalent electrical length. According to the resonant frequency calculation formula: f=1 / [2π√(LC)], the resonant frequency of the overall resonant circuit formed by the first switch tuning circuit 31 and the second grounding point D2 to the third free end E3 can be obtained. This embodiment defines the resonant frequency of the overall resonant circuit formed by the first switch tuning circuit 31 and the second grounding point D2 to the third free end E3 at this time as the second resonant frequency.

[0124] And, when the first switch tuning circuit 31 is in the second tuning state, a 1 / 4 wavelength mode supporting the first frequency band is formed on the first radiator 11, and a 1 / 4 wavelength mode supporting the first frequency band is formed between the second free end E2 and the second grounding point D2 of the second radiator 12, and the current distribution from the second free end E2 to the second grounding point D2 of the first radiator 11 and the second radiator 12 is the second current distribution. At this time, the second grounding point D2 to the third free end E3 of the second radiator 12 does not serve as a parasitic branch, that is, no parasitic resonance is formed.

[0125] Specifically, the resonant frequency corresponding to the electrical length between the second grounding point D2 and the third free end E3 is greater than or equal to the center frequency of the first frequency band. In other words, the electrical length between the second grounding point D2 and the third free end E3 is less than or equal to 1 / 4 wavelength of the center frequency of the first frequency band (for example, 2GHz). The second resonant frequency is located after the center frequency of the first frequency band. In the second tuning state, the first tuning switch 311 can be controlled to conduct the first tuning circuit 312 and the third connection point A3. The first tuning circuit 312 includes but is not limited to a capacitor element, an inductor element, etc. In this embodiment, the first tuning circuit 312 is a capacitor element. The first tuning circuit 312 is used to adjust the resonant frequency corresponding to the overall electrical length between the second grounding point D2 and the third free end E3 to be greater than or equal to the center frequency of the first frequency band, and tune the second resonant frequency to a difference with the center frequency of the first frequency band that is less than or equal to a preset frequency range.

[0126] It should be noted that the overall electrical length between the second grounding point D2 and the third free end E3 refers to the sum of the electrical length between the second grounding point D2 and the third free end E3 and the equivalent electrical length of the first tuning circuit 312 .

[0127] The present application does not specifically limit the preset frequency range, and optionally, the preset frequency range includes but is not limited to 1 GHz. In other words, the difference between the center frequency of the first frequency band and the second resonant frequency tuned by the first tuning circuit 312 is less than or equal to 1 GHz, 0.9 GHz, 0.8 GHz, 0.7 GHz, 0.6 GHz, 0.5 GHz, 0.4 GHz, 0.3 GHz, 0.2 GHz, 0.1 GHz.

[0128] In this embodiment, the first switch tuning circuit 31 is designed in the second tuning state so that the resonant frequency corresponding to the overall electrical length between the second grounding point D2 and the third free end E3 is greater than or equal to the center frequency of the first frequency band, so as to form a current in the same direction between the first radiator 11 and the second free end E2 and the second grounding point D2. By designing the difference between the center frequency of the first frequency band and the second resonant frequency after tuning by the first tuning circuit 312 to be less than or equal to a preset frequency range, the efficiency of the first frequency band is improved.

[0129] For example, taking the center frequency of the first frequency band as 2.2 GHz, the second resonant frequency between the second ground point D2 and the third free end E3 after tuning by the first tuning circuit 312 includes but is not limited to 2.0-2.2 GHz (eg, 2.4 GHz).

[0130] Optional, see Fig.11The first switch tuning circuit 31 is a multi-way switch circuit, one of which is connected to the first feed source 21, and the other paths are connected to the inductor / capacitor or the inductor-capacitor combination.

[0131] Optional, see Fig.12 The first switch tuning circuit 31 is a plurality of single-channel switches. One switch is connected to the RF path, and the other switch is connected to the inductor / capacitor or the inductor-capacitor combination. The first switch tuning circuit 31 can also be other switch forms. The first switch tuning circuit 31 can realize the disconnection and connection between the first radiator 11 and the first feed source 21, and realize the tuning of the first radiator 11 to the required frequency.

[0132] The second tuning state (for the first frequency band) of the first switch tuning circuit 31 is a state of conducting small impedance to ground or a state of conducting grounding. The current in the first frequency band is grounded through the first switch tuning circuit 31, so that the resonant current formed between the second grounding point D2 and the third free end E3 is small, that is, the branch between the second grounding point D2 and the third free end E3 does not form a parasitic resonance, thereby forming the aforementioned second current distribution.

[0133] In a first alternative implementation, see Fig.13 The antenna assembly 100 further includes a second feed source 22. The second feed source 22 is electrically connected to the first tuning switch 311. The second tuning state includes the first tuning switch 311 switching to conduct the second feed source 22 and the third connection point A3.

[0134] The present application is not limited to the second feed source 22 being at least one of a feed source for satellite communication and a feed source for cellular mobile communication, etc. In other words, the second feed source 22 can be a single feed source, or a combination of a feed source for satellite communication and a feed source for cellular mobile communication.

[0135] When the first tuning switch 311 is switched to the second feed source 22 to turn on the third connection point A3, the path from the third connection point A3 to the second feed source 22 corresponds to the first frequency band, which is equivalent to a small impedance to the ground. The current in the first frequency band goes to the ground through the first switch tuning circuit 31, so that the resonant current formed between the second grounding point D2 and the third free end E3 is small, that is, the branch between the second grounding point D2 and the third free end E3 does not form a parasitic resonance, thereby forming the aforementioned second current distribution.

[0136] In a second alternative implementation, see Fig.14, the first switch tuning circuit 31 also includes a second tuning circuit 313. The second tuning circuit 313 is electrically connected to the first tuning switch 311. The second tuning circuit 313 is in a state of conducting small impedance to ground for the first frequency band, for example, the second tuning circuit 313 is 0 ohm to ground, and the current of the first frequency band is grounded through the first switch tuning circuit 31, so that the resonant current formed between the second grounding point D2 and the third free end E3 is small, thereby forming the aforementioned second current distribution.

[0137] In a third alternative implementation, see Fig.10 The first switch tuning circuit 31 includes a first tuning switch 311, and the first tuning state is a state where the first tuning switch 311 is disconnected from the reference ground system 500. The second tuning state is a state where the first tuning switch 311 is connected to the reference ground system 500.

[0138] In a fourth alternative implementation, see Fig.14 , the first switch tuning circuit 31 also includes a second tuning circuit 313. The second tuning circuit 313 is electrically connected to the first tuning switch 311. The second tuning state includes the first tuning switch 311 switching to conduct the second tuning circuit 313 and the third connection point A3. The resonant frequency corresponding to the total electrical length between the second tuning circuit 313, the second grounding point D2 and the third free end E3 is greater than the center frequency of the first frequency band.

[0139] Optionally, before tuning, the resonant frequency corresponding to the electrical length between the second grounding point D2 and the third free end E3 is close to the center frequency of the first frequency band. In the second tuning state, the first tuning switch 311 can be controlled to conduct the second tuning circuit 313 and the third connection point A3. The second tuning circuit 313 includes but is not limited to a capacitor element, an inductor element, etc. In this embodiment, the second tuning circuit 313 is an inductor. The second tuning circuit 313 is used to adjust the overall electrical length between the second grounding point D2 and the third free end E3 to be less than the electrical length corresponding to the center frequency of the first frequency band. The second tuning circuit 313 makes the resonant frequency corresponding to the electrical length between the second grounding point D2 and the third free end E3 greater than the center frequency of the first frequency band.

[0140] For example, taking the center frequency of the first frequency band as 2.2 GHz, in the second tuning state, the second tuning circuit 313 makes the resonant frequency between the second grounding point D2 and the third free end E3 greater than 2.2 GHz, and the current in the first frequency band is grounded through the second tuning circuit 313, so that the resonant current formed between the second grounding point D2 and the third free end E3 is small, thereby forming the aforementioned second current distribution.

[0141] Optionally, the main radiation range when the first current distribution is on the first radiator 11 and the second radiator 12 is the first coverage range. Specifically, when the first current distribution is on the first radiator 11 and the second radiator 12, a current mode of 1 / 2 wavelength is formed on the second radiator 12, and its main radiation range is mainly in the upward direction of the top frame 321.

[0142] The main radiation range when the first radiator 11 and the second radiator 12 have the second current distribution is the second coverage range. The first coverage range is different from the second coverage range.

[0143] Specifically, when the first radiator 11 and the second radiator 12 have the second current distribution, the second current distribution is mainly distributed between the first grounding point D1 and the second grounding point D2. When the first radiator 11 and the second radiator 12 have the first current distribution, their main radiation range is mainly in the upward direction of the top frame 321 and the outward direction of the first side frame 322. When the first side frame 322 is located on the left side of the electronic device 1000, its main radiation range is mainly in the upward direction and the left direction of the top frame 321.

[0144] The antenna assembly 100 further includes a controller (not shown). The controller is configured to control the first tuning switch 311 to the aforementioned first tuning state or second tuning state according to the received signal strength of the antenna assembly 100 or the posture of the electronic device 1000 where the antenna assembly 100 is located, so as to switch the current distribution on the first radiator 11 and the second radiator 12, and further switch the direction of the directional pattern of the first frequency band.

[0145] Specifically, the controller is configured to control the first tuning switch 311 to the aforementioned first tuning state or second tuning state according to the received signal strength of the antenna assembly 100 being less than or equal to the signal strength threshold, so as to switch between the first current distribution and the second current distribution, and then switch the direction of the directional pattern of the first frequency band.

[0146] For details, please refer to Fig.15, the antenna assembly 100 also includes a first switch module 41. One end of the first switch module 41 is electrically connected to the first feed source 21. The two selection ends of the first switch module 41 are electrically connected to the first connection point A1 and the second connection point A2. The first switch module 41 can switchably connect the first feed source 21 with the first connection point A1, or connect the first feed source 21 with the second connection point A2. Since the radiator electrically connected to the first feed source 21 is the main radiator, the first switch module 41 can switch the first radiator 11 or the second radiator 12 to be the main radiator. Among them, the first radiator 11 and the second radiator 12 are located at different positions on the top frame 321, so the first switch module 41 switches to connect the first feed source 21 with the first connection point A1, or connects the first feed source 21 with the second connection point A2, which can have different radiation fields and different SAR hot spot intensity distributions, and can be applied to the scene where a person holds the electronic device 1000 in his hand and places it on the left or right side of the person's head.

[0147] Specifically, the first switch module 41 switches the first feed source 21 and the first connection point A1, at which time the first radiator 11 can be used as the main radiator, and the second radiator 12 can be used as the parasitic radiator. Specifically, the first switch module 41 switches the first feed source 21 and the second connection point A2, at which time the second free end E2 to the second grounding point D2 of the second radiator 12 can be used as the main radiator, and the second radiator 12 from the second grounding point D2 to the third free end E3 can be used as the parasitic radiator.

[0148] The above example takes the first radiator 11 being located at a side close to the first side frame 322 as an example. In other embodiments, please refer to Fig.16 , the first radiator 11 may also be located on a side close to the second side frame 323 . Fig.16 The implementation method can refer to Figures 3 to 15 The specific implementation method is designed.

[0149] The specific structure of the antenna assembly 100 provided in the second embodiment is described below with reference to the accompanying drawings.

[0150] See also Fig.17 The antenna assembly 100 includes a first radiator 11, a second radiator 12, a first switch unit 42, a first feed source 21, a second switch unit 43, and a second feed source 22.

[0151] See also Fig.17 The first radiator 11 includes a first grounding point D1, a first connection point A1, and a first free end E1.

[0152] See also Fig.17The second radiator 12 includes a second free end E2, a second connection point A2, a second ground point D2, a third connection point A3 and a third free end E3. A first coupling gap G1 is formed between the second free end E2 and the first free end E1.

[0153] The structure and function of the first radiator 11 in this embodiment may refer to the structure and function of the first radiator 11 in the first embodiment.

[0154] See also Fig.17 and Fig.18 One end of the first switch unit 42 is electrically connected to the first connection point A1 or the second connection point A2. The first feed source 21 is electrically connected to the other end of the first switch unit 42.

[0155] One end of the second switch unit 43 is electrically connected to the third connection point A3 . The second feed source 22 is electrically connected to the other end of the second switch unit 43 .

[0156] The first switch unit 42 and the second switch unit 43 are used to switch the first current distribution supporting the first frequency band and the third current distribution supporting the first frequency band on the first radiator 11 and the second radiator 12. The first current distribution is to form a unidirectional current between the first ground point D1 and the third free end E3. The third current distribution includes forming a unidirectional current between the second free end E2 and the third free end E3.

[0157] In an optional embodiment, one end of the first switch unit 42 is electrically connected to the first connection point A1. The first feed source 21 is electrically connected to the other end of the first switch unit 42. One end of the second switch unit 43 is electrically connected to the third connection point A3. The second feed source 22 is electrically connected to the other end of the second switch unit 43.

[0158] See also Fig.17 and Fig.19 The first switch unit 42 and the second switch unit 43 are used to switch the first radiator 11 and the second radiator 12 to have a first current distribution supporting the first frequency band and a third current distribution supporting the first frequency band.

[0159] See also Fig.17 and Fig.19 , the first current distribution is to form a unidirectional current between the first grounding point D1 and the third free end E3. Specifically, the first current distribution may flow from the first grounding point D1 to the third free end E3. At other times, it may flow from the third free end E3 to the first grounding point D1.

[0160] See also Fig.17 and Fig.19 The third current distribution includes a current in the same direction formed between the second free end E2 and the third free end E3. Specifically, the third current distribution may flow from the second free end E2 to the third free end E3. At other times, the third current distribution may flow from the third free end E3 to the second free end E2.

[0161] The switching in this embodiment is the switching between the first radiator 11 being the main radiator and the second radiator 12 being the main radiator.

[0162] The first radiator 11 and the second radiator 12 both form unidirectional currents. That is, when the antenna assembly 100 operates in the first frequency band, the first radiator 11 and the second radiator 12 form unidirectional currents, the radiation fields cancel each other less, and the radiation fields overlap each other more, so as to improve the gain of the directional pattern; on the other hand, the first current distribution covers the first radiator 11 and the second radiator 12, so it can be seen that the antenna assembly 100 has a larger radiation aperture when operating in the first frequency band, so as to improve the radiation efficiency. In addition, since the first radiator 11 and the second radiator 12 are arranged on the top frame 321, it can promote the directional pattern toward the top side, increase the proportion of the upper hemisphere, and facilitate communication with satellite equipment in the sky.

[0163] In another optional implementation, please refer to Fig.18 One end of the first switch unit 42 is electrically connected to the second connection point A2. The first feed source 21 is electrically connected to the other end of the first switch unit 42. One end of the second switch unit 43 is electrically connected to the third connection point A3. The second feed source 22 is electrically connected to the other end of the second switch unit 43.

[0164] The antenna assembly 100 is located at the top frame 321, and both the first feed source 21 and the second feed source 22 support satellite frequency bands. When the electronic device 1000 is placed on the right side of the human head, the first switch unit 42 switches to the first feed source 21 (or the second feed source 22) to work. When the electronic device 1000 is placed on the left side of the human head, the second switch unit 43 switches to the second feed source 22 (or the first feed source 21) to work. When the first feed source 21 is working, the second switch unit 43 is disconnected; the second grounding point D2 to the third free end E3 serves as a parasitic branch from the second grounding point D2 to the second free end E2, and the resonant frequency corresponding to the total electrical length from the second grounding point D2 to the third free end E3 is less than the operating frequency of the first feed source 21. Using the second grounding point D2 to the third free end E3 branch as a parasitic can not only improve the efficiency of the first feed source 21, but also improve the antenna pattern of the first feed source 21. When the first feed source 21 is working, the directional pattern upward accounts for a higher proportion, which is conducive to communication with the satellite. When the second feed source 22 is working, the first switch unit 42 is disconnected; the second grounding point D2 to the second free end E2 is used as a parasitic from the second grounding point D2 to the third free end E3, and the resonant frequency corresponding to the total electrical length from the second grounding point D2 to the second free end E2 is less than the working frequency of the second feed source 22. Using the branch from the second grounding point D2 to the second free end E2 as a parasitic branch when the second feed source 22 is working can not only improve the antenna efficiency when the second feed source 22 is working, but also improve the antenna pattern when the second feed source 22 is working. This makes the antenna pattern of the second feed source 22 when working have a higher proportion of upward, which is conducive to communication with the satellite.

[0165] The switching in this embodiment is the switching from the second free end E2 to the second grounding point D2 as the main radiator and from the second grounding point D2 to the third free end E3 as the main radiator.

[0166] The current distribution when the first feed source 21 is working is different from that when the second feed source 22 is working. For example, the current distribution when the first feed source 21 is working is the same as the first current distribution, and the current distribution when the second feed source 22 is working is the same as the third current distribution. Therefore, the current position and path are different on the electronic device 1000. Therefore, the main radiation range when the first feed source 21 is working is different from that when the second feed source 22 is working. The first switch unit 42 and the second switch unit 43 realize the function of switching the main radiation range of the antenna assembly 100 in the first frequency band. For some weak field scenarios, head-made phone calls scenarios, hand-held scenarios, and scenarios where a certain direction is blocked, better communication performance can be obtained by switching the main radiation range in the first frequency band.

[0167] An antenna assembly 100 provided in an embodiment of the present application includes a first radiator 11, a second radiator 12, a first feed source 21, a first switch unit 42, a second feed source 22, and a second switch unit 43. The first radiator 11 includes a first grounding point D1, a first connection point A1, and a first free end E1; the second radiator 12 includes a second free end E2, a second connection point A2, a second grounding point D2, a third connection point A3, and a third free end E3, and a first coupling gap G1 is formed between the second free end E2 and the first free end E1; one end of the first switch unit 42 is electrically connected to the first connection point A1 or the second connection point A2; the first feed source 21 is electrically connected to the other end of the first switch unit 42; one end of the second switch unit 43 is electrically connected to the third connection point A3; the second feed source 22 is electrically connected to the other end of the second switch unit 43; the first switch unit 42 and the The second switch unit 43 is used to switch the first radiator 11 and the second radiator 12 to have a first current distribution supporting the first frequency band and a third current distribution supporting the first frequency band. The first current distribution is a unidirectional current formed between the first grounding point D1 and the third free end E3; the third current distribution includes a unidirectional current formed between the second free end E2 and the third free end E3. The formation of the unidirectional current can improve the working efficiency of the antenna. The first switch unit 42 and the second switch unit 43 switch the first radiator 11 and the second radiator 12 to have the first current distribution or the second current distribution. Different current distributions are conducive to forming different main radiation ranges to improve the communication performance of the antenna assembly 100.

[0168] In an optional switching implementation, see Fig. 20 The first switch unit 42 turns the first feed source 21 on. The second switch unit 43 turns the second feed source 22 off. The first radiator 11 and the second radiator 12 have the first current distribution.

[0169] Specifically, taking the first switch unit 42 electrically connected to the first connection point A1 as an example, the first switch unit 42 conducts between the first connection point A1 and the first feed source 21. Optionally, the second switch unit 43 may be in a disconnected state. Optionally, the second switch unit 43 may be in a state of disconnecting the second feed source 22 from the second switch unit 43, and conducting the second switch unit 43 with other tuning circuits.

[0170] In another alternative switching implementation, see Fig.21, the second switch unit 43 is in a state of turning on the second feed source 22. The first switch unit 42 turns off the first feed source 21. The first radiator 11 and the second radiator 12 have the third current distribution.

[0171] Specifically, taking the first switch unit 42 electrically connected to the first connection point A1 as an example, the second switch unit 43 conducts the second connection point A2 and the second feed source 22. Optionally, the first switch unit 42 may be in a disconnected state. Optionally, the first switch unit 42 may be in a state of disconnecting the first feed source 21 and the first switch unit 42, and conducting the first switch unit 42 and other tuning circuits.

[0172] See also Fig.17 and Fig.19 This embodiment can realize the switching of the first radiator 11 as the main radiator or the second grounding point D2 to the third free end E3 of the second radiator 12 as the main radiator. Fig.18 It is also possible to switch between the second free end E2 to the second grounding point D2 as the main radiator or between the second grounding point D2 to the third free end E3 as the main radiator, thereby supporting the first frequency band in different states and having different radiation direction coverage ranges.

[0173] For further optional information, see Fig.21 The radiation branch of the antenna assembly 100 also includes a third radiator 13.

[0174] The structure, form, etc. of the third radiator 13 may refer to the structure, form, etc. of the first radiator 11 .

[0175] See also Fig.21 The third radiator 13 includes a fourth free end E4 and a third grounding point D3. A second coupling gap G2 is formed between the fourth free end E4 and the third free end E3.

[0176] The third current distribution also includes a unidirectional current formed between the second grounding point D2 and the third grounding point D3. In other words, the third current distribution is a unidirectional current formed from the second free end E2 to the third grounding point D3. Further, the third current distribution includes a 1 / 2 wavelength mode supporting the first frequency band from the second free end E2 to the third free end E3. The structure of the second radiator 12 is close to that of a T-shaped antenna, and the 1 / 2 wavelength current on the second radiator 12 forms a directional diagram in which the top frame 321 is facing upward (away from the reference system).

[0177] When the first feed source 21 works on a person's head and hand, the performance of the electronic device 1000 when it is close to the left side of the head is different from the performance when the person's head and hand and the electronic device 1000 are close to the right side of the head, and the performance presents one high and one low. For example, when the first feed source 21 works on the right head and hand of a person, the performance is better, and when the second feed source 22 works on the left head and hand of a person, the performance is better. Therefore, the first feed source 21 or the second feed source 22 in the antenna assembly 100 can switch to work when the electronic device 1000 is in different head and hand postures.

[0178] Optional, see Fig. 22 , one end of the first switch unit 42 is electrically connected to the first connection point A1. The antenna assembly 100 further includes a third feed source 23 and a third switch unit 44. One end of the third switch unit 44 is electrically connected to the second connection point A2. The other end of the third switch unit 44 is electrically connected to the third feed source 23.

[0179] See also Fig. 22 The first switch unit 42 turns the first feed source 21 into a conducting state, that is, the first feed source 21 excites to form a resonance mode of the first frequency band. The second switch unit 43 turns the second feed source 22 into an off state. The third switch unit 44 turns the third feed source 23 into an off state, so that the first current distribution is formed on the first radiator 11 and the second radiator 12.

[0180] See also Fig.23 The second switch unit 43 turns the second feed source 22 into a conducting state, that is, the second feed source 22 excites to form a resonance mode of the first frequency band. The third switch unit 44 turns the third feed source 23 into an off state. The first switch unit 42 turns the first feed source 21 into an off state, so that the third current distribution is formed on the first radiator 11 and the second radiator 12.

[0181] For further information, see Fig. 22 The antenna assembly 100 further includes a first tuning circuit 312 electrically connected to the second switch unit 43. The second switch unit 43 enables the second feed source 22 to be in an off state and enables the first tuning circuit 312 to be in an on state to form the first current distribution.

[0182] The second resonant frequency corresponding to the electrical length between the first tuning circuit 312, the second grounding point D2 and the third free end E3 is less than or equal to the center frequency of the first frequency band, and the second resonant frequency is tuned to a difference between the center frequency of the first frequency band and that of the first frequency band that is less than or equal to a preset frequency range.

[0183] The first tuning circuit 312 in this embodiment may refer to the first tuning circuit 312 in the first embodiment.

[0184] In this embodiment, the first tuning circuit 312 is designed to make the resonant frequency corresponding to the overall electrical length between the second grounding point D2 and the third free end E3 smaller than the center frequency of the first frequency band, so that a current in the same direction as that between the second free end E2 and the second grounding point D2 is formed between the second grounding point D2 and the third free end E3. The difference between the center frequency of the first frequency band and the second resonant frequency after tuning by the first tuning circuit 312 is designed to be smaller than or equal to a preset frequency range, so that the resonant frequency of the resonant mode between the second grounding point D2 and the third free end E3 is similar to the resonant mode supporting the first frequency band between the first grounding point D1 and the third free end E3, which is beneficial to improving the efficiency of the first frequency band; in addition, the resonant frequency of the resonant mode between the second grounding point D2 and the third free end E3 and the resonant mode supporting the first frequency band between the first grounding point D1 and the third free end E3 can form a double-wave resonance to support a wider bandwidth, cover the first frequency band, and reduce the risk of frequency deviation.

[0185] In other words, the present application places the resonant frequency of the branch from the second grounding point D2 to the third free end E3 as the parasitic of the first radiator 11 before the center frequency of the first frequency band to form more unidirectional currents and improve the efficiency of the first frequency band; a current close to 1 / 2 wavelength is formed on the second radiator 12, which can also improve the radiation pattern of the first frequency band, so that the radiation pattern of the first frequency band has a higher proportion upward, which is conducive to communication with the satellite.

[0186] See also Fig.24 , Fig.24 It is an S curve when the first feed source 21 provided in the embodiment of the present application excites the first radiator 11 and the second radiator 12 to form the first current distribution and the second current distribution. Among them, curve a1 is the S curve of the second current distribution formed on the first radiator 11 and the second radiator 12 by the first feed source 21. Curve a2 is the S curve of the first current distribution formed on the first radiator 11 and the second radiator 12 by the first feed source 21. The center frequency of the first frequency band is about 2.2 GHz, and the resonant frequency formed by the branch from the second grounding point D2 to the third free end E3 is 2.13 GHz. The resonant frequency formed by the branch from the second grounding point D2 to the third free end E3 is located before the center frequency of the first frequency band. On the one hand, it is conducive to forming the first current distribution on the first radiator 11 and the second radiator 12, and on the other hand, it is conducive to forming a wider bandwidth to cover the Tiantong satellite band.

[0187] See also Fig.25 The antenna assembly 100 further includes a second tuning circuit 313 electrically connected to the second switch unit 43 .

[0188] When the first feed source 21 excites the first radiator 11 and the second radiator 12, the second switch unit 43 turns the second feed source 22 off and turns the second tuning circuit 313 on to form a second current distribution. The second current distribution forms a unidirectional current between the first ground point D1 and the second ground point D2.

[0189] The second tuning circuit 313 in this embodiment may refer to the second tuning circuit 313 provided in the first embodiment.

[0190] When the first feed source 21 excites the first radiator 11 and the second radiator 12, the second switch unit 43 turns the second feed source 22 into a conducting state to form a second current distribution. The second current distribution forms a unidirectional current between the first ground point D1 and the second ground point D2. The second feed source 22 is in a conducting state, and the path of the second feed source 22 is a low impedance path for the first frequency band.

[0191] See also Fig.26 , Fig.26 It is a schematic diagram of the second current distribution formed on the first radiator 11 and the second radiator 12 by the first feed source 21 provided in the embodiment of the present application. For example, taking the center frequency of the first frequency band as 2.2 GHz, the second tuning circuit 313 makes the resonant frequency between the second grounding point D2 and the third free end E3 greater than 2.2 GHz, and the current of the first frequency band is grounded through the second tuning circuit 313, so that the resonant current formed between the second grounding point D2 and the third free end E3 is small, thereby forming a second current distribution distributed from the first grounding point D1 to the second grounding point D2.

[0192] See also Fig. 27 , Fig. 27 The first feed source 21 provided in the embodiment of the present application excites the first radiator 11 and the second radiator 12 to form a first current distribution diagram. It can be seen that the use of the branch from the second grounding point D2 to the third free end E3 as the parasitic of the first radiator 11 can excite the branch 1 / 2 wavelength mode from the second free end E2 to the third free end E3. The branch current from the second free end E2 to the third free end E3 has the same direction as the current of the first radiator 11, the length of the same direction current is long, and the radiation field cancellation is small, thereby improving the working efficiency of the first radiator 11.

[0193] See also Fig.28 , Fig.28 The first feed source 21 provided in the embodiment of the present application stimulates the first radiator 11 and the second radiator 12 to form the radiation efficiency and total efficiency curves of the second current distribution and the first current distribution.

[0194] Curve a1 is a radiation efficiency curve of the first feed source 21 exciting the first radiator 11 and the second radiator 12 to form a second current distribution. Curve a2 is a radiation efficiency curve of the first feed source 21 exciting the first radiator 11 and the second radiator 12 to form a first current distribution. Curve b1 is a total efficiency curve of the first feed source 21 exciting the first radiator 11 and the second radiator 12 to form a second current distribution. Curve b2 is a total efficiency curve of the first feed source 21 exciting the first radiator 11 and the second radiator 12 to form a first current distribution.

[0195] It can be seen that using the branch from the second ground point D2 to the third free end E3 as the parasitic of the first radiator 11 significantly improves the working efficiency of the first radiator 11. The 1 / 2 wavelength mode of the branch from the second free end E2 to the third free end E3 located in the middle of the top frame 321 is oriented directly upward. When the first feed source 21 excites the 1 / 2 wavelength mode of the branch from the second free end E2 to the third free end E3, the directional pattern of the antenna assembly 100 is more oriented directly upward.

[0196] See also Fig.29 , Fig.29 The first feed source 21 provided in the embodiment of the present application excites the first radiator 11 and the second radiator 12 to form a 3D directional diagram of the second current distribution. This directional diagram is a third directional diagram. The first feed source 21 excites the first radiator 11 and the second radiator 12 to have the main radiation direction in the first frequency band toward the left and upward.

[0197] See also Fig.30 , Fig.30 The first feed source 21 provided in the embodiment of the present application excites the first radiator 11 and the second radiator 12 to form a 3D directional diagram of the first current distribution. This directional diagram is the first directional diagram. The first feed source 21 excites the first radiator 11 and the second radiator 12 to have the main radiation direction in the first frequency band upward.

[0198] It can be seen that when the branch from the second ground point D2 to the third free end E3 is used as the parasitic of the first radiator 11, the first feed source 21 excites the first radiator 11 and the second radiator 12 to point more upward in the first frequency band. In addition, through simulation calculation, the proportion of the upper hemisphere of the antenna pattern is increased from 51% to 57%.

[0199] See also Fig.31 The antenna assembly 100 further includes a third tuning circuit 325 electrically connected to the third switch unit 44. The third switch unit 44 enables the third feed source 23 to be in an off state and enables the third tuning circuit 325 to be in an on state to form the third current distribution.

[0200] The resonant frequency corresponding to the electrical length between the third tuning circuit 325, the second free end E2 and the second ground point D2 is less than the center frequency of the first frequency band, and the difference between the resonant frequency and the center frequency of the first frequency band is less than or equal to a preset frequency range.

[0201] The third tuning circuit 325 in this embodiment may refer to the first tuning circuit 312 in the first embodiment.

[0202] In this embodiment, the third tuning circuit 325 is designed to make the resonant frequency corresponding to the electrical length between the second free end E2 and the second grounding point D2 smaller than the center frequency of the first frequency band, so as to form a current in the same direction between the second free end E2 and the third grounding point D3. The difference between the center frequency of the first frequency band and the resonant frequency (the resonant frequency corresponding to the electrical length between the second free end E2 and the second grounding point D2) after tuning by the third tuning circuit 325 is designed to be smaller than or equal to the preset frequency range, so that the resonant frequency of the resonant mode between the second free end E2 and the second grounding point D2 is similar to the resonant mode supporting the first frequency band between the second grounding point D2 and the third free end E3, which is conducive to improving the efficiency of the first frequency band; in addition, the resonant frequency of the resonant mode between the second free end E2 and the second grounding point D2 and the resonant mode supporting the first frequency band between the second grounding point D2 and the third free end E3 can form a double-wave resonance to support a wider bandwidth, cover the first frequency band, and reduce the risk of frequency deviation.

[0203] Optional, see Fig.32 The antenna assembly 100 further includes a fourth tuning circuit 326 electrically connected to the third switch unit 44 .

[0204] When the third feed source 23 excites the second radiator 12 and the third radiator 13, the third switch unit 44 turns the third feed source 23 off and turns the fourth tuning circuit 326 on to form a fourth current distribution. The fourth current distribution forms a unidirectional current between the second ground point D2 and the third ground point D3.

[0205] The fourth tuning circuit 326 in this embodiment may refer to the first tuning circuit 311 provided in the first embodiment.

[0206] When the third feed source 23 excites the second radiator 12 and the third radiator 13, the third switch unit 44 turns the third feed source 23 into a conducting state to form a fourth current distribution. The fourth current distribution forms a unidirectional current between the second ground point D2 and the third ground point D3. The third feed source 23 is in a conducting state, and the path of the third feed source 23 is a low impedance path for the first frequency band.

[0207] See also Fig.33 , Fig.33 It is an S curve when the second feed source 22 provided in the embodiment of the present application excites the second radiator 12 and the third radiator 13 to form the third current distribution and the fourth current distribution. Among them, curve a1 is an S curve when the second feed source 22 excites the second radiator 12 and the third radiator 13 to form the fourth current distribution. Curve a2 is an S curve when the second feed source 22 excites the second radiator 12 and the third radiator 13 to form the third current distribution.

[0208] In the present application, the branch from the second free end E2 to the second grounding point D2 is used as the parasitic from the second grounding point D2 to the third free end E3, and is placed before the center frequency of the first frequency band to form more unidirectional currents and improve the efficiency of the first frequency band; a current close to 1 / 2 wavelength is formed on the second radiator 12, and the radiation pattern of the third feed source 23 working in the first frequency band can also be improved, so that the radiation pattern of the first frequency band has a higher proportion upward, which is conducive to communication with the satellite.

[0209] See also Fig.34 , the antenna assembly 100 also includes a second switching tuning circuit 46. The second switching tuning circuit 46 is electrically connected to the third radiator 13. The second switching tuning circuit 46 makes the resonant frequency corresponding to the electrical length of the third radiator 13 greater than the center frequency of the first frequency band. The structure of the second switching tuning circuit 46 can refer to the structure of the first switching tuning circuit 31. From the S curve when the second feed source 22 excites the second radiator 12 and the third radiator 13 to form a third current distribution, it can be seen that the resonant frequency corresponding to the third radiator 13 is greater than the center frequency of the first frequency band, so as to form a current in the same direction between the second grounding point D2 and the third grounding point D3, thereby improving the efficiency of the first frequency band; in addition, the resonant frequency of the resonant mode of the third radiator 13 and the resonant mode supporting the first frequency band between the second grounding point D2 and the third free end E3 can form a double-wave resonance to support a wider bandwidth, cover the first frequency band, and reduce the risk of frequency deviation.

[0210] See also Fig.35 , Fig.35 The second feed source 22 provided in the embodiment of the present application excites the second radiator 12 and the third radiator 13 to form a fourth current distribution diagram. For example, taking the center frequency of the first frequency band as 2.2 GHz, the third tuning circuit 325 makes the resonant frequency between the second free end E2 and the second grounding point D2 greater than 2.2 GHz, and the current of the first frequency band is grounded through the third tuning circuit 325, so that the resonant current formed between the second free end E2 and the second grounding point D2 is small, thereby forming a fourth current distribution distributed from the second grounding point D2 to the third grounding point D3.

[0211] See also Fig.36 , Fig.36 The third feed source 23 provided in the embodiment of the present application excites the second radiator 12 and the third radiator 13 to form a third current distribution diagram. It can be seen that the use of the branch from the second free end E2 to the second grounding point D2 as the parasitic from the second grounding point D2 to the third free end E3 can excite the branch 1 / 2 wavelength mode from the second free end E2 to the third free end E3. The branch current from the second free end E2 to the third free end E3 has the same direction as the current of the third radiator 13, the length of the same direction current is long, and the radiation field cancellation is small, thereby improving the working efficiency of the first radiator 11.

[0212] It can be seen that the use of the second free end E2 to the second grounding point D2 as the parasitic branch between the second grounding point D2 and the third free end E3 can excite the 1 / 2 wavelength mode of the branch between the second free end E2 and the third free end E3. The branch current from the second free end E2 to the second grounding point D2 has the same direction as the branch current from the second grounding point D2 to the third free end E3. Therefore, the working efficiency of the first radiator 11 is improved.

[0213] See also Fig.37 , Fig.37 The radiation efficiency and total efficiency curves are obtained when the second feed source 22 provided in the embodiment of the present application stimulates the second radiator 12 and the third radiator 13 to form a fourth current distribution.

[0214] Curve a1 is a radiation efficiency curve of the second feed source 22 exciting the second radiator 12 and the third radiator 13 to form a fourth current distribution. Curve a2 is a radiation efficiency curve of the second feed source 22 exciting the second radiator 12 and the third radiator 13 to form a third current distribution. Curve b1 is a total efficiency curve of the second feed source 22 exciting the second radiator 12 and the third radiator 13 to form a fourth current distribution. Curve b2 is a total efficiency curve of the second feed source 22 exciting the second radiator 12 and the third radiator 13 to form a third current distribution.

[0215] It can be seen that the use of the second free end E2 to the second grounding point D2 as the parasitic branch from the second grounding point D2 to the third free end E3 significantly improves the working efficiency of the second feed source 22 in the first frequency band. The branch 1 / 2 mode located in the middle from the second free end E2 to the third free end E3 itself has a directivity pattern that faces directly upward. When the branch 1 / 2 mode from the second free end E2 to the third free end E3 is excited, the directivity pattern of the second feed source 22 in the first frequency band faces more directly upward.

[0216] See also Fig.38 , Fig.38The second feed source 22 provided in the embodiment of the present application excites the second radiator 12 and the third radiator 13 to form a 3D pattern of the fourth current distribution. This pattern is the fourth pattern. The second feed source 22 excites the second radiator 12 and the third radiator 13 to face the right side in the main radiation direction of the first frequency band.

[0217] See also Fig.39 , Fig.39 The second feed source 22 provided in the embodiment of the present application excites the second radiator 12 and the third radiator 13 to form a 3D directional diagram of the third current distribution. This directional diagram is the second directional diagram. The second feed source 22 excites the second radiator 12 and the third radiator 13 to have a main radiation direction in the first frequency band that is upward.

[0218] It can be seen that by using the second free end E2 to the second ground point D2 branch parasitic, the second feed source 22 excites the second radiator 12 and the third radiator 13 to form a radiation pattern that is more upward. After calculation, the proportion of the upper hemisphere of the antenna pattern is increased from 54% to 61%.

[0219] The main radiation range when the first radiator 11 and the second radiator 12 have the first current distribution is the first coverage range. The main radiation range when the first radiator 11 and the second radiator 12 have the second current distribution is the second coverage range. The main radiation range when the second radiator 12 and the third radiator 13 have the third current distribution is the third coverage range. The main radiation range when the second radiator 12 and the third radiator 13 have the fourth current distribution is the fourth coverage range. Any two of the first coverage range, the second coverage range, the third coverage range, and the fourth coverage range are different.

[0220] Specifically, under the excitation of the first feed source 21, there can be two directional patterns, forming a second current distribution and a left-facing directional pattern when the branch from the second grounding point D2 to the third free end E3 is not used as a parasitic branch, and forming a first current distribution and an upward directional pattern when the branch from the second grounding point D2 to the third free end E3 is used as a parasitic branch.

[0221] Specifically, under the excitation of the second feed source 22, there can be two directional patterns. When the branch from the second free end E2 to the second grounding point D2 is not used as a parasitic branch, a fourth current distribution and a rightward directional pattern are formed. When the branch from the second free end E2 to the second grounding point D2 is used as a parasitic branch, a third current distribution and an upward directional pattern are formed.

[0222] By switching the antennas of the first feed source 21 and the second feed source 22 and whether to use parasitic branches, a directional pattern toward the left, a directional pattern toward the right, and a directional pattern toward the top can be obtained. These four antenna states can also be used in handheld scenarios or head-to-hand call scenarios to increase the terminal communication coverage and improve the terminal communication performance. When the satellite or base station is on the right, the antenna state that generates the right directional pattern is used, when the satellite or base station is on the left, the antenna state that generates the left directional pattern is used, and when the satellite or base station is above, the antenna state that generates the upward directional pattern is used.

[0223] The antenna assembly 100 further includes a controller. The controller is electrically connected to the first switch unit 42, the second switch unit 43, and the third switch unit 44. The controller is configured to control the current distribution on the first radiator 11, the second radiator 12, and the third radiator 13 according to the received signal strength or the posture of the electronic device 1000 where the antenna assembly 100 is located, and switch among the first current distribution, the second current distribution, the third current distribution, and the fourth current distribution.

[0224] For example, the posture of the electronic device 1000 where the antenna assembly 100 is located can be detected by a gyroscope in the electronic device 1000. When the electronic device 1000 is placed on the left side of a person's head, the first feed source 21 operates in the first frequency band. When the electronic device 1000 is placed on the right side of a person's head, the second feed source 22 operates in the first frequency band. By switching different radiators, the electronic device 1000 has better performance and lower SAR value when making a call in a scene with a person's head.

[0225] In another embodiment, see Fig.40 , the first feed source 21 is electrically connected to the second connection point A2 via the first switch unit 42. One end of the first switch unit 42 is electrically connected to the second connection point A2. The antenna assembly 100 also includes a first switching tuning circuit 45 electrically connected to the first connection point A1. When the second switch unit 43 makes the second feed source 22 in an off state and the first switch unit 42 makes the first feed source 21 in an on state, the first switching tuning circuit 45 makes the resonance point corresponding to the electrical length of the first radiator 11 greater than the center frequency of the first frequency band, so that the first current distribution is formed on the first radiator 11 and the second radiator 12.

[0226] This embodiment may refer to the embodiment in which the first feed source 21 is electrically connected to the first connection point A1 via the first switch unit 42. The difference between this embodiment and the embodiment in which the first feed source 21 is electrically connected to the first connection point A1 via the first switch unit 42 is that the main radiator when the first feed source 21 is electrically connected to the first connection point A1 via the first switch unit 42 is the first radiator 11, and the main radiator when the first feed source 21 is electrically connected to the second connection point A2 via the first switch unit 42 is the second free end E2 to the first grounding point D1, and the main current positions are different, so that these two embodiments have better antenna performance when they are respectively applied to the scenario in which the left-handed hand-held electronic device 1000 is placed on the left side of the human head and the right-handed hand-held electronic device 1000 is placed on the right side of the human head.

[0227] Combined with reference Figure 3 , Fig. 20 , Fig.21 The embodiment of the present application further provides an electronic device 1000, which includes the aforementioned frame 320 and an antenna assembly 100 disposed on the frame 320. The frame 320 includes a top frame 321, a first side frame 322, a bottom frame 324 and a second side frame 323 connected in sequence.

[0228] Combined with reference Figure 3 , Fig. 20 , Fig.21 , the antenna assembly 100 includes a radiating branch, a first feed source 21 and a second feed source 22. Optionally, the radiating branch includes at least the aforementioned first radiator 11 and the second radiator 12. The radiating branch includes a first feeding point (first connection point A1 or second connection point A2) and a second feeding point (third connection point A3) arranged at intervals. The first feeding point is located at the top frame 321. The first feeding point is located between the second feeding point and the first side frame 322. The second feeding point is located between the first feeding point and the second side frame 323, that is, the first feeding point is closer to the first side frame 322. The second feeding point is closer to the second side frame 323. The first feed source 21 can selectively turn on or off the first feeding point. The first feeding point can be the aforementioned first connection point A1 or the aforementioned second connection point A2. In this embodiment, the first feeding point is taken as the aforementioned first connection point A1 as an example. The second feed source 22 can selectively turn on or off the second feeding point. The second feeding point is the aforementioned third connection point A3.

[0229] See also Fig. 20 When the electronic device 1000 is in a first posture, the first feed source 21 is switched to turn on the first feeding point to support a first frequency band.

[0230] See also Fig.21When the electronic device 1000 is in the second posture, the second feed source 22 is switched to turn on the second feeding point to support the first frequency band.

[0231] Among them, the first posture includes but is not limited to one of the postures of the electronic device 1000 being on the left side of the head in a head-hand scenario and the electronic device 1000 being on the right side of the head in a head-hand scenario, and the second posture includes but is not limited to the other of the postures of the electronic device 1000 being on the left side of the head in a head-hand scenario and the electronic device 1000 being on the right side of the head in a head-hand scenario.

[0232] Since the first feeding point and the second feeding point correspond to different positions on the top frame 321, the current distribution, the directional pattern, and the antenna performance are different when the first feed source 21 and the second feed source 22 are working. The electronic device 1000 provided in this embodiment is in the first posture or the second posture, and the feed source is switched to conduct different feeding points on the radiating branch. For example, the first side frame 322 is the right side. The first posture is the left side posture of the human head, and the first feed source 21 is switched to conduct and switch to the first feeding point; the second posture is the right side posture of the human head, and the second feed source 22 is switched to conduct and switch to the second feeding point.

[0233] Further optionally, the first side frame 322 is the right side. The first posture is a left-hand holding posture of a human head, and the efficiency of the first feed source 21 when working is compared with that of the second feed source 22 when working. If the efficiency of the first feed source 21 when working is higher, the first feed source 21 is switched to conduction and switched to the first feeding point; the second posture is a right-hand holding posture of a human head, and the efficiency of the first feed source 21 when working is compared with that of the second feed source 22 when working. If the efficiency of the second feed source 22 when working is higher, the second feed source 22 is switched to conduction and switched to the second feeding point.

[0234] Optionally, the first posture includes a posture in which the second side frame 323 is mainly held in a head-hand scene. The second posture includes a posture in which the first side frame 322 is mainly held in a head-hand scene.

[0235] The head-hand scene is a scene where the electronic device 1000 is held and placed near the head, for example, the handheld electronic device 1000 is placed on the ear to answer a voice call. In the head-hand scene, the second side frame 323 is mainly held by the thumb and palm. Taking the first side frame 322 as the right side as an example, the second side frame 323 is mainly held in the head-hand scene in the left hand holding posture of the head. Correspondingly, the first side frame 322 is mainly held in the right hand holding posture of the head in the head-hand scene.

[0236] When the first feed source 21 is switched to conduct the first feed point, the directional pattern of the antenna assembly 100 is the first directional pattern. When the second feed source 22 is switched to conduct the second feed point, the directional pattern of the antenna assembly 100 is the second directional pattern. Both the first directional pattern and the second directional pattern are mainly oriented toward the side where the top frame 321 is located. The main radiation range of the first directional pattern is different from the main radiation range of the second directional pattern.

[0237] The coverage range of the first directional pattern corresponds to the first coverage range in the first embodiment, and the coverage range of the second directional pattern corresponds to the third coverage range in the first embodiment.

[0238] Both the first coverage range and the third coverage range radiate toward the side where the top frame 321 is located, and the first coverage range is also biased towards the side where the first side frame 322 is located. Therefore, the coverage range of the first radiation pattern is different from the coverage range of the second radiation pattern, and thus have different antenna efficiencies and antenna performances, to ensure that the antenna efficiency and antenna performance are better when switching to different postures of the handheld electronic device 1000.

[0239] Combined with reference Fig. 20 The radiation branch includes a first radiator 11 and a second radiator 12. The first radiator 11 includes a first grounding point D1, a first connection point A1, and a first free end E1. The second radiator 12 includes a second free end E2, a second connection point A2, a second grounding point D2, a third connection point A3, and a third free end E3. A first coupling gap G1 is formed between the second free end E2 and the first free end E1. The first feeding point is the first connection point A1 or the second connection point A2. The second feeding point is the third connection point A3.

[0240] Combined with reference Fig. 20 and Fig.21 The antenna assembly 100 further includes a first switch unit 42 and a second switch unit 43. The first switch unit 42 electrically connects the first feed source 21 and the first feeding point. The second switch unit 43 electrically connects the second feed source 22 and the second feeding point.

[0241] Among them, the structure and function of the first radiator 11 in this embodiment can refer to the structure and function of the first radiator 11 in the previous embodiment. The structure and function of the second radiator 12 in this embodiment can refer to the structure and function of the second radiator 12 in the previous embodiment. The structure and function of the first switch unit 42 in this embodiment can refer to the structure and function of the first switch unit 42 in the previous embodiment. The structure and function of the second switch unit 43 in this embodiment can refer to the structure and function of the second switch unit 43 in the previous embodiment.

[0242] Combined with reference Fig.21The radiation branch further includes a third radiator 13. The third radiator 13 includes a fourth free end E4 and a third grounding point D3. A second coupling gap G2 is formed between the fourth free end E4 and the third free end E3.

[0243] The structure and function of the third radiator 13 in this embodiment may refer to the structure and function of the third radiator 13 in the previous embodiment.

[0244] When the first feed source 21 is switched to conduct the first feed point, a first current distribution can be formed on the first radiator 11 and the second radiator 12. The first current distribution includes forming a unidirectional current between the first ground point D1 and the third free end E3.

[0245] The distribution and function of the first current distribution in this embodiment may refer to the distribution and function of the first current distribution in the aforementioned embodiment.

[0246] When the first feed source 21 is switched to conduct the first feed point, a third current distribution can be formed on the second radiator 12 and the third radiator 13. The third current distribution includes forming a unidirectional current between the second free end E2 and the third ground point D3.

[0247] The distribution and function of the third current distribution in this embodiment may refer to the distribution and function of the third current distribution in the aforementioned embodiment having the third radiator 13 .

[0248] Optional, please refer to Figure 7 The antenna assembly 100 also includes a first switch tuning circuit 31, which is electrically connected to the third connection point A3; when the first feed source 21 is switched to be connected to the first feed point (that is, the first feed source 21 is working and the second feed source 22 is not working), the first switch tuning circuit 31 is in a first tuning state, and a parasitic resonance is formed on the radiation branch between the second grounding point D2 and the third free end E3. The first radiator 11 and the second radiator 12 have a first current distribution, and the first current distribution includes forming a unidirectional current between the first grounding point D1 and the third free end E3. The antenna assembly 100 has a first radiation pattern with a first coverage range.

[0249] Specifically, the first switch tuning circuit 31 is in a first tuning state. Further, the first switch tuning circuit 31 can be in an open circuit state, or a capacitor grounded state, or an inductor grounded state. The resonance frequency corresponding to the total electrical length of the overall resonance circuit formed by the first switch tuning circuit 31 and the second grounding point D2 to the third free end E3 is less than the center frequency of the first frequency band. Parasitic resonance is formed on the radiation branch between the second grounding point D2 and the third free end E3 to form a first current distribution and a first directional diagram with a first coverage range. The first directional diagram is toward the top frame 321 and biased toward the first side frame 322.

[0250] For optional reference, please refer to Figure 8 When the first feed source 21 is switched to be connected to the first feed point (i.e., the first feed source 21 is working and the second feed source 22 is not working), the first switch tuning circuit 31 is in a second tuning state, and no parasitic resonance is generated on the radiation branch between the second grounding point D2 and the third free end E3. The first radiator 11 and the second radiator 12 have a second current distribution, and the second current distribution includes forming a unidirectional current between the first grounding point D1 and the second grounding point D2; the antenna assembly 100 has a third orientation diagram with a second coverage range.

[0251] Specifically, the first switch tuning circuit 31 is in the second tuning state. Further, the first switch tuning circuit 31 can be in a state of conducting small impedance to ground, or a state of conducting grounding, or a state of inductance under ground, or a state of conducting the second feed source 22 and the third connection point A3. The resonant frequency corresponding to the electrical length between the second grounding point D2 and the third free end E3 is greater than or equal to the center frequency of the first frequency band. No parasitic resonance is generated on the radiation branch between the second grounding point D2 and the third free end E3 to form a second current distribution and a third directional diagram with a second coverage range. The third directional diagram is mainly toward the first side frame 322.

[0252] Optional, please refer to Fig.31 The antenna assembly 100 also includes a second switch tuning circuit (not shown), which is electrically connected to the second connection point A2; the second switch tuning circuit is in a third tuning state, and when the second feed source 22 is switched to be connected to the second feed point (that is, the second feed source 22 is working and the first feed source 21 is not working), a parasitic resonance is formed on the radiation branch between the second grounding point D2 and the second free end E2, and the second radiator 12 and the third radiator 13 have a third current distribution, and the third current distribution includes forming a unidirectional current between the second free end E2 and the third grounding point D3; the antenna assembly 100 has a second radiation pattern with a third coverage range.

[0253] Specifically, the second switch tuning circuit includes a third switch unit 44 and a third tuning circuit 325. The second switch tuning circuit is in the third tuning state, including but not limited to the third switch unit 44 switching to conduct the second connection point A2 and the third tuning circuit 325. Further, the third tuning circuit 325 can be in a capacitor grounding state or an inductor grounding state. The total electrical length of the overall resonant circuit formed by the third tuning circuit 325 and the second grounding point D2 to the second free end E2 corresponds to a resonant frequency that is less than the center frequency of the first frequency band. A parasitic resonance is formed on the radiation branch between the second grounding point D2 and the second free end E2 to form a third current distribution and a second directional diagram with a third coverage range. The second directional diagram is toward the top frame 321.

[0254] For optional reference, please refer to Fig.32 , the antenna assembly 100 also includes a second switch tuning circuit, which is electrically connected to the second connection point A2; when the second feed source 22 is switched to be connected to the second feed point (that is, the second feed source 22 is working and the first feed source 21 is not working), the second switch tuning circuit is in a fourth tuning state, no parasitic resonance is generated on the radiation branch between the second ground point D2 and the second free end E2, the second radiator 12 and the third radiator 13 have a fourth current distribution to form a fourth current distribution, and the antenna assembly 100 has a fourth radiation pattern with a fourth coverage range.

[0255] Specifically, the second switch tuning circuit includes a third switch unit 44 and a fourth tuning circuit 326. The second switch tuning circuit is in the fourth tuning state, including but not limited to switching the third switch unit 44 to conduct the second connection point A2 and the fourth tuning circuit 326 or the third feed source and the second connection point A2. Further, the fourth tuning circuit 326 may be in a state of conducting a small impedance to the ground, or a state of conducting the ground, or a state of inductance to the ground, the resonant frequency corresponding to the electrical length between the second grounding point D2 and the second free end E2 is greater than or equal to the center frequency of the first frequency band, and no parasitic resonance is generated on the radiation branch between the second grounding point D2 and the second free end E2, so as to form a fourth current distribution, and a fourth directional diagram with a fourth coverage range. The fourth directional diagram is mainly toward the second side frame 323.

[0256] This implementation method can obtain a left-facing directional pattern, a right-facing directional pattern, and an upward directional pattern by switching two feed sources and switching whether their respective parasitic branches are working. Then, these four antenna states can be used in handheld scenarios or head-to-hand call scenarios to increase the terminal communication coverage range and improve the terminal communication performance.

[0257] The present application proposes a method of switching different radiators to achieve better performance and lower SAR value when a mobile phone is making a call in a head-on scene. When the satellite is working on one of the first radiator 11 and the second radiator 12, the parasitic branches can be used to excite the 1 / 2 wavelength mode of the branches from the middle second free end E2 to the third free end E3, thereby improving the performance of the antenna and improving the antenna's directional pattern, so that the directional pattern facing upward accounts for a higher proportion, which is conducive to communication with the satellite. By switching between the two antennas and whether to use parasitic branches, directional patterns to the left, to the right, and to the top can be obtained. Using these four antenna states in handheld scenarios or head-to-hand call scenarios increases the terminal communication coverage and improves the terminal communication performance. The present application can also be applied to other communication frequency bands, and can be applied to straight-panel phones, large folding phones, small folding phones, and other mobile terminal forms.

[0258] In a first alternative implementation, see Figure 3 and Figure 4 The electronic device provided in the present application may be a straight-bar mobile phone. Optionally, the first radiator 11 , the second radiator 12 and the third radiator 13 are all disposed on the top frame 321 .

[0259] In a second alternative implementation, see Fig.41 The electronic device 1000 provided in the present application is a foldable electronic device. The electronic device 1000 is not limited to being a device that is folded in two, three, or four ways.

[0260] See also Fig.41 The electronic device 1000 includes a first body 710 and a second body 720. The first body 710 and the second body 720 are movably connected (rotationally connected or slidably connected), and the state between the first body 710 and the second body 720 includes a folded state or an unfolded state.

[0261] Optionally, the first body 710 and the second body 720 can slide to an unfolded state or a folded state along the length direction or the width direction of the foldable electronic device 1000. When the foldable electronic device 1000 is in the folded state, the first body 710 and the second body 720 are stacked along the thickness direction of the foldable electronic device 1000.

[0262] For optional reference, see Fig.41 The first body 710 and the second body 720 are rotated along the length direction or the width direction of the foldable electronic device 1000 to an unfolded state or a folded state.

[0263] In one embodiment, see Fig.41 The rotating shaft 730 between the first body 710 and the second body 720 is along the length direction of the foldable electronic device 1000.

[0264] See also Fig.41 , the frame 320 includes a sub-frame of the first body 710 and a sub-frame of the second body 720. The sub-frame of the first body 710 includes a first top frame 321a, a first side frame 322, and a first bottom frame 324a connected in sequence. The sub-frame of the second body 720 includes a second top frame 321b, a second side frame 323, and a second bottom frame 324b connected in sequence. In other words, the top frame 321 includes a first top frame 321a and a second top frame 321b that are movably connected. The bottom frame 324 includes a first bottom frame 324a and a second bottom frame 324b that are movably connected.

[0265] The first top frame 321a is movably connected to the second top frame 321b, and the first bottom frame 324a is movably connected to the second bottom frame 324b.

[0266] See also Fig.41 Optionally, when the first body 710 is rotatably connected to the second body 720, the first top frame 321a is rotatably connected to the second top frame 321b, and the first bottom frame 324a is rotatably connected to the second bottom frame 324b. In other embodiments, when the first body 710 is slidably connected to the second body 720, the first top frame 321a is slidably connected to the second top frame 321b, and the first bottom frame 324a is slidably connected to the second bottom frame 324b. In this embodiment, the first top frame 321a is rotatably connected to the second top frame 321b, and the first bottom frame 324a is rotatably connected to the second bottom frame 324b as an example for description.

[0267] See also Fig.41 The first top frame 321a and the second top frame 321b are arranged opposite to each other and spaced apart along the thickness direction of the electronic device 1000 when the electronic device 1000 is in a folded state, and the first top frame 321a and the second top frame 321b are arranged in a colinear manner when the electronic device 1000 is in an unfolded state.

[0268] The extension directions of the first side frame 322 and the second side frame 323 are both parallel to the length direction of the foldable electronic device 1000 .

[0269] See also Fig.41The first bottom frame 324a and the second bottom frame 324b are respectively on opposite sides of the rotating shaft 730 of the foldable electronic device 1000. The first bottom frame 324a and the second bottom frame 324b are arranged opposite to each other and spaced apart along the thickness direction of the electronic device 1000 when the electronic device 1000 is in the folded state, and the first bottom frame 324a and the second bottom frame 324b are arranged in a colinear manner when the electronic device 1000 is in the unfolded state.

[0270] The electronic device 1000 provided in this embodiment has an unfolded form and a folded form. In the unfolded form, it has a larger display surface, and in the folded form, it has a smaller volume. The electronic device 1000 is provided with the aforementioned antenna assembly 100 to improve the working efficiency of the antenna. For example, when the antenna assembly 100 operates in the satellite frequency band, it can have a relatively high upper hemisphere occupancy.

[0271] In one embodiment, see Fig.42 The rotating shaft 730 between the first body 710 and the second body 720 is along the width direction of the foldable electronic device 1000. The width dimension of the electronic device 1000 is smaller than the length dimension. Optionally, the first radiator 11, the second radiator 12 and the third radiator 13 are all disposed on the top frame 321.

[0272] Optionally, when the electronic device 1000 is in the unfolded state, the first top frame 321a and the second top frame 321b are unfolded. Fig.41 The radiation branch of the antenna assembly 100 is disposed on the first top frame 321a, or the radiation branch of the antenna assembly 100 is disposed on the second top frame 321b; or, refer to Fig.43 Part of the radiating branches of the antenna assembly 100 are arranged on the first top frame 321a, and the other part of the radiating branches are arranged on the second top frame 321b. The radiating branches of the antenna assembly 100 include the aforementioned first radiator 11 and the second radiator 12, or include the aforementioned first radiator 11, the second radiator 12 and the third radiator 13.

[0273] Optionally, when the electronic device 1000 is in a folded state, please refer to Fig.41 The radiating branches of the antenna assembly 100 are arranged on the first top frame 321a, or the radiating branches of the antenna assembly 100 are arranged on the second top frame 321b. In other words, the radiating branches of the antenna assembly 100 are arranged on a top frame portion corresponding to a folding body.

[0274] Specifically, when the electronic device 1000 is a foldable electronic device, the electronic device 1000 has an unfolded state and a folded state. When the electronic device 1000 performs satellite communication based on the folded state, refer to Fig.41 , the radiating branches of the antenna assembly 100 are all arranged on the first top frame 321a, or the radiating branches of the antenna assembly 100 are all arranged on the second top frame 321b. Therefore, when the electronic device 1000 is in a folded state, the radiating branches of the antenna assembly 100 will not be folded, which can improve the working efficiency of the antenna. For example, when the antenna assembly 100 works in the satellite frequency band, it can have a relatively high upper hemisphere occupancy.

[0275] When the electronic device 1000 is in a call based on the unfolded state, please refer to Fig.41 The radiating branches of the antenna assembly 100 are arranged on the first top frame 321a, or the radiating branches of the antenna assembly 100 are arranged on the second top frame 321b; in other words, the radiating branches of the antenna assembly 100 are arranged on the top frame portion corresponding to a folding body. Alternatively, please refer to Fig.43 , a portion of the radiating branches of the antenna assembly 100 is disposed on the first top frame 321a, and another portion of the radiating branches is disposed on the second top frame 321b. In other words, the radiating branches of the antenna assembly 100 are disposed on the top frame portions corresponding to two or more folding bodies.

[0276] Specifically, when the electronic device 1000 is a foldable electronic device, the electronic device 1000 has an unfolded state and a folded state. When the electronic device 1000 performs a satellite call based on the folded state, the radiation branches of the antenna assembly 100 are all arranged on the first top frame 321a, or the radiation branches of the antenna assembly 100 are all arranged on the second top frame 321b, or a part of the radiation branches of the antenna assembly 100 are arranged on the first top frame 321a, and another part of the radiation branches are arranged on the second top frame 321b. The radiation branches of the antenna assembly 100 will not be folded, which can improve the working efficiency of the antenna. For example, when the antenna assembly 100 operates in the satellite frequency band, it can have a relatively high upper hemisphere share.

[0277] Specifically, when the call state of the electronic device 1000 includes a folded call state and an unfolded call state, the radiation branch of the antenna assembly 100 is arranged on the first top frame 321a, or the radiation branch of the antenna assembly 100 is arranged on the second top frame 321b.

[0278] Specifically, when the electronic device 1000 is a foldable electronic device, the electronic device 1000 has an unfolded state and a folded state. The electronic device 1000 can make satellite calls based on the folded state, and can also make satellite calls based on the unfolded state. The radiation branches of the antenna assembly 100 are all arranged on the first top frame 321a, or the radiation branches of the antenna assembly 100 are all arranged on the second top frame 321b. Regardless of whether the antenna assembly 100 is in a folded state or an unfolded state, the radiation branches of the antenna assembly 100 will not be folded, which can improve the working efficiency of the antenna. For example, when the antenna assembly 100 operates in a satellite frequency band, it can have a relatively high upper hemisphere share.

[0279] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

1. An antenna assembly, characterized in that: The antenna assembly comprises: A first radiator, wherein the first radiator comprises a first ground point, a first connection point, and a first free end; A second radiator, the second radiator comprising a second free end, a second connection point, a second grounding point, a third connection point and a third free end, and a first coupling gap is formed between the second free end and the first free end; a first feed source, the first feed source being electrically connected to the first connection point or the second connection point; A first switch tuning circuit, wherein the first switch tuning circuit is electrically connected to the third connection point, and the first switch tuning circuit is used to switch to a state where the first radiator and the second radiator have a first current distribution, or the first switch tuning circuit is used to switch to a state where the first radiator and the second radiator have a second current distribution, wherein the first current distribution forms a unidirectional current between the first ground point and the third free end; and the second current distribution forms a unidirectional current between the first ground point and the second ground point.

2. The antenna assembly according to claim 1, wherein: The first switch tuning circuit has a first tuning state and a second tuning state. When the first switch tuning circuit is in the first tuning state, a first resonance mode supporting a first frequency band is formed on the first radiator and the second radiator, and a current distribution of the first resonance mode is the first current distribution. When the first switch tuning circuit is in the second tuning state, a second resonance mode supporting the first frequency band is formed on the first radiator and the second radiator, and the current distribution of the second resonance mode is the second current distribution.

3. The antenna assembly according to claim 2, wherein: The first resonant frequency corresponding to the electrical length between the second grounding point and the third free end is less than the center frequency of the first frequency band, and the difference between the first resonant frequency and the center frequency of the first frequency band is less than or equal to a preset frequency range, and the difference between the first resonant frequency and the center frequency of the first frequency band is less than or equal to a preset frequency range; the first tuning state is a state disconnected from the reference ground system.

4. The antenna assembly according to claim 2, wherein: A second resonant frequency corresponding to the electrical length between the second grounding point and the third free end is greater than or equal to the center frequency of the first frequency band, the first switch tuning circuit includes a first tuning switch and a first tuning circuit, the first tuning state is that the first tuning switch turns on the first tuning circuit and the third connection point, the resonant frequency corresponding to the electrical length between the first tuning circuit, the second grounding point and the third free end is greater than or equal to the center frequency of the first frequency band, and the difference between the resonant frequency and the center frequency of the first frequency band is less than or equal to a preset frequency range.

5. The antenna assembly according to claim 3 or 4, characterized in that: The second tuning state is a state of conducting a small impedance to ground or a state of conducting a grounding.

6. The antenna assembly according to claim 5, characterized in that The antenna assembly also includes a second feed source, which is electrically connected to the first tuning switch. The second tuning state includes the first tuning switch being switched to conduct the second feed source and the third connection point.

7. The antenna assembly according to claim 5, characterized in that The first switch tuning circuit also includes a second tuning circuit, the second tuning circuit is electrically connected to the first tuning switch, the second tuning state includes the first tuning switch being switched to conduct the second tuning circuit and the third connection point, the resonant frequency corresponding to the electrical length between the second tuning circuit, the second grounding point and the third free end is greater than the center frequency of the first frequency band, and the first frequency band includes a satellite communication frequency band.

8. The antenna assembly according to claim 1, wherein: The main radiation range of the first radiator and the second radiator when having the first current distribution is the first coverage range, and the main radiation range of the first radiator and the second radiator when having the second current distribution is the second coverage range, and the first coverage range is different from the second coverage range.

9. The antenna assembly according to any one of claims 1 to 8, characterized in that: The antenna assembly further includes a first switch module, one end of which is electrically connected to the first feed source, and two selection ends of the first switch module are electrically connected to the first connection point and the second connection point.

10. An antenna assembly, characterized in that: The antenna assembly comprises: A first radiator, wherein the first radiator comprises a first ground point, a first connection point, and a first free end; A second radiator, the second radiator comprising a second free end, a second connection point, a second grounding point, a third connection point and a third free end, and a first coupling gap is formed between the second free end and the first free end; A first switch unit, one end of which is electrically connected to the first connection point or the second connection point; a first feed source, the first feed source being electrically connected to the other end of the first switch unit; a second switch unit, one end of which is electrically connected to the third connection point; a second feed source, the second feed source being electrically connected to the other end of the second switch unit; The first switch unit and the second switch unit are used to switch to a first current distribution that supports a first frequency band on the first radiator and the second radiator; or, the first switch unit and the second switch unit are used to switch to a third current distribution that supports the first frequency band on the first radiator and the second radiator, wherein the first current distribution forms a unidirectional current from the first grounding point to the third free end; and the third current distribution includes forming a unidirectional current between the second free end and the third free end.

11. The antenna assembly according to claim 10, wherein: The first switch unit makes the first feed source in an on state, the second switch unit makes the second feed source in an off state, and the first radiator and the second radiator have the first current distribution; The second switch unit is in a state of turning on the second feed source, the first switch unit turns off the first feed source, and the first radiator and the second radiator have the third current distribution.

12. The antenna assembly according to claim 10, wherein: One end of the first switch unit is electrically connected to the first connection point, the antenna assembly further includes a third feed source and a third switch unit, one end of the third switch unit is electrically connected to the second connection point, and the other end of the third switch unit is electrically connected to the third feed source, The first switch unit makes the first feed source in an on state, the second switch unit makes the second feed source in an off state, and the first radiator and the second radiator have the first current distribution; The second switch unit puts the second feed source in an on state, the third switch unit puts the third feed source in an off state, and the first radiator and the second radiator have the third current distribution.

13. The antenna assembly according to claim 10, wherein: One end of the first switch unit is electrically connected to the second connection point, and the antenna assembly further includes a first switching tuning circuit electrically connected to the first connection point. When the second switch unit puts the second feed source in an off state and the first switch unit puts the first feed source in an on state, the first switching tuning circuit makes the resonance point corresponding to the electrical length of the first radiator greater than the center frequency of the first frequency band, so that the first current distribution is formed on the first radiator and the second radiator.

14. The antenna assembly according to claim 12 or 13, characterized in that: The antenna assembly also includes a third radiator, the third radiator includes a fourth free end and a third grounding point, a second coupling gap is formed between the fourth free end and the third free end, and the third current distribution also includes a unidirectional current formed between the second grounding point and the third grounding point.

15. The antenna assembly according to claim 14, wherein: The antenna assembly further includes a first tuning circuit electrically connected to the second switch unit, the second switch unit causing the second feed source to be in an off state and causing the first tuning circuit to be in an on state to form the first current distribution; The resonant frequency corresponding to the electrical length between the first tuning circuit, the second grounding point and the third free end is greater than or equal to the center frequency of the first frequency band, and the difference between the resonant frequency and the center frequency of the first frequency band is less than or equal to a preset frequency range.

16. The antenna assembly according to claim 15, wherein: The antenna assembly also includes a second tuning circuit electrically connected to the second switch unit, the second switch unit puts the second feed source in a disconnected state and puts the second tuning circuit in a turned-on state to form a second current distribution, the second current distribution forms a unidirectional current between the first grounding point and the second grounding point; or, the second switch unit puts the second feed source in a turned-on state to form a second current distribution, the second current distribution forms a unidirectional current between the first grounding point and the second grounding point.

17. The antenna assembly according to claim 14, wherein: One end of the first switch unit is electrically connected to the second connection point, and the antenna assembly further comprises a third tuning circuit electrically connected to the third switch unit, wherein the third switch unit makes the third feed source in an off state and makes the third tuning circuit in an on state to form the third current distribution; The resonant frequency corresponding to the electrical length between the third tuning circuit, the second free end and the second grounding point is less than the center frequency of the first frequency band, and the difference between the resonant frequency and the center frequency of the first frequency band is less than or equal to a preset frequency range.

18. The electronic device according to claim 17, characterized in that: The antenna assembly also includes a fourth tuning circuit electrically connected to the third switch unit, the third switch unit puts the third feed source in a disconnected state and puts the fourth tuning circuit in a turned-on state to form a fourth current distribution, wherein the fourth current distribution forms a unidirectional current between the second grounding point and the third grounding point; or, the third switch unit puts the third feed source in a turned-on state to form a fourth current distribution, wherein the fourth current distribution forms a unidirectional current between the second grounding point and the third grounding point.

19. The antenna assembly according to claim 18, wherein: The main radiation range when the first radiator and the second radiator have the first current distribution is the first coverage range, the main radiation range when the first radiator and the second radiator have the second current distribution is the second coverage range, the main radiation range when the second radiator and the third radiator have the third current distribution is the third coverage range, and the main radiation range when the second radiator and the third radiator have the fourth current distribution is the fourth coverage range, and any two of the first coverage range, the second coverage range, the third coverage range, and the fourth coverage range are different.

20. The antenna assembly according to claim 14, wherein: The antenna assembly also includes a second switching tuning circuit, which is electrically connected to the third radiator. The second switching tuning circuit makes the resonant frequency corresponding to the electrical length of the third radiator greater than the center frequency of the first frequency band, and the first frequency band includes a satellite communication frequency band.

21. The antenna assembly according to claim 12, wherein: The antenna assembly also includes a controller, which is electrically connected to the first switch unit, the second switch unit and the third switch unit, and the controller is configured to control the current distribution on the first radiator, the second radiator and the third radiator according to the received signal strength or the posture of the electronic device where the antenna assembly is located.

22. An electronic device, characterized in that: It comprises a top frame and the antenna assembly according to any one of claims 1 to 21, wherein the first radiator and the second radiator are arranged on the top frame.

23. An electronic device, characterized in that: It includes a frame and an antenna assembly arranged on the frame, wherein the frame includes a top frame, a first side frame, a bottom frame and a second side frame connected in sequence; The antenna assembly includes a radiating branch, a first feed source and a second feed source; the radiating branch includes a first feed point and a second feed point that are spaced apart, the first feed point is located at the top frame, the first feed point is located between the second feed point and the first side frame, the second feed point is located between the first feed point and the second side frame, the first feed source can selectively turn on or off the first feed point, and the second feed source can selectively turn on or off the second feed point; When the electronic device is in a first posture, the first feed source is switched to conduct the first feed point to support a first frequency band; When the electronic device is in a second posture, the second feed source is switched to turn on the second feeding point to support the first frequency band.

24. The electronic device according to claim 23, characterized in that The first posture includes a posture in which the second side frame is mainly held in a head-hand scene; the second posture includes a posture in which the first side frame is mainly held in a head-hand scene.

25. The electronic device according to claim 23, characterized in that When the first feed source is switched to conduct the first feeding point, the radiation pattern of the antenna assembly is the first radiation pattern; when the second feed source is switched to conduct the second feeding point, the radiation pattern of the antenna assembly is the second radiation pattern; the first radiation pattern and the second radiation pattern are both mainly directed toward the side where the top frame is located, and the main radiation range of the first radiation pattern is different from the main radiation range of the second radiation pattern.

26. The electronic device according to claim 23, characterized in that The radiation branch includes a first radiator and a second radiator, the first radiator includes a first grounding point, a first connection point, and a first free end; the second radiator includes a second free end, a second connection point, a second grounding point, a third connection point, and a third free end, and a first coupling gap is between the second free end and the first free end; the first feeding point is the first connection point or the second connection point, and the second feeding point is the third connection point; The antenna assembly further includes a first switch unit and a second switch unit, wherein the first switch unit is electrically connected between the first feed source and the first feed point, and the second switch unit is electrically connected between the second feed source and the second feed point.

27. The electronic device according to claim 26, characterized in that The radiation branch also includes a third radiator, the third radiator includes a fourth free end and a third grounding point, and a second coupling gap is between the fourth free end and the third free end.

28. The electronic device according to claim 27, characterized in that The antenna assembly further includes a first switch tuning circuit, which is electrically connected to the third connection point; when the first feed source is switched to conduct the first feed point, the first switch tuning circuit is in a first tuning state, the first radiator and the second radiator have a first current distribution, the first current distribution includes forming a unidirectional current between the first ground point and the third free end, and the antenna assembly has the first radiation pattern; or, The antenna assembly further includes a first switch tuning circuit, which is electrically connected to the third connection point; when the first feed source is switched to conduct the first feed point, the first switch tuning circuit is in a second tuning state, the first radiator and the second radiator have a second current distribution, the second current distribution includes forming a unidirectional current between the first grounding point and the second grounding point, and the antenna assembly has a third orientation diagram mainly toward the first side frame; or, The antenna assembly further includes a second switch tuning circuit, which is electrically connected to the second connection point; when the second feed source is switched to conduct the second feed point, the second switch tuning circuit is in a third tuning state, and the second radiator and the third radiator have a third current distribution, and the third current distribution includes forming a unidirectional current between the second free end and the third grounding point, and the antenna assembly has the second radiation pattern; or, The antenna assembly also includes a second switch tuning circuit, which is electrically connected to the second connection point; when the second feed source is switched to turn on the second feed point, the second switch tuning circuit is in a fourth tuning state, and the second radiator and the third radiator have a fourth current distribution, and the fourth current distribution includes forming a unidirectional current between the second grounding point and the third grounding point, and the antenna assembly has a fourth radiation pattern mainly toward the second side frame.

29. The electronic device according to any one of claims 22 to 27, characterized in that: The top frame includes a first top frame and a second top frame that are movably connected. When the electronic device is in an unfolded state, the first top frame and the second top frame are unfolded, and the radiation branches of the antenna assembly are arranged on the first top frame, or the radiation branches of the antenna assembly are arranged on the second top frame; or, a part of the radiation branches of the antenna assembly are arranged on the first top frame, and another part of the radiation branches are arranged on the second top frame.

30. The electronic device according to claim 29, characterized in that When the electronic device is in a folded state for a call, the radiation branch of the antenna assembly is arranged on the first top frame, or the radiation branch of the antenna assembly is arranged on the second top frame; When the electronic device is in a call based on the unfolded state, the radiation branches of the antenna assembly are arranged on the first top frame, or the radiation branches of the antenna assembly are arranged on the second top frame; or a part of the radiation branches of the antenna assembly are arranged on the first top frame, and another part of the radiation branches are arranged on the second top frame; When the call state of the electronic device includes a folded call state and an unfolded call state, the radiation branch of the antenna assembly is arranged on the first top frame, or the radiation branch of the antenna assembly is arranged on the second top frame.

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