Electronic device

Abstract

The invention provides electronic equipment, the electronic equipment comprises a reference floor and an antenna assembly, the antenna assembly comprises a first radiation section, a capacitive structure and an inductive structure, and the first radiation section comprises a first feeding point and a first connection point which are arranged at an interval; the first radiation section and one edge of the reference floor are arranged at an interval; the first end of the capacitive structure is electrically connected with the first connection point, and the second end of the capacitive structure is electrically connected with the first feeding point; one end of the inductive structure is electrically connected with the first feeding point, and the other end of the inductive structure is grounded; one end of the first feed source is electrically connected with the first feeding point, the first feed source is used for exciting the first radiation section to form zero-order resonance supporting the first frequency band, current dispersion is reduced, reverse current is avoided, the efficiency of the first frequency band is improved, and the antenna performance is improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and more particularly to an electronic device. Background Art

[0002] With the development of communication technologies, the number of antennas that need to be installed on communication devices such as mobile phones is increasing. Some antennas may share branches with each other, and for antennas operating in some frequency bands, high-order modes may be generated on adjacent antennas, which may lead to a decline in antenna performance. Therefore, how to improve antenna performance has become a technical problem to be solved. Summary of the Invention

[0003] This application provides an electronic device for improving antenna performance.

[0004] In a first aspect, an electronic device provided by this application, the antenna assembly includes:

[0005] A reference ground plane;

[0006] An antenna assembly, the antenna assembly includes:

[0007] A first radiation section, the first radiation section is spaced apart from one edge of the reference ground plane; the first radiation section includes a first feeding point and a first connection point that are spaced apart;

[0008] A capacitive structure, a first end of the capacitive structure is electrically connected to the first connection point, and a second end of the capacitive structure is electrically connected to the first feeding point;

[0009] An inductive structure, one end of the inductive structure is electrically connected to the first feeding point, and the other end of the inductive structure is grounded;

[0010] A first feed source, one end of the first feed source is electrically connected to the first feeding point, and the first feed source is used to excite the first radiation section to form a zero-order resonance supporting a first frequency band.

[0011] For the electronic device provided by this application, the electronic device includes a reference ground plane and an antenna assembly. The designed antenna assembly includes a first radiation section, a capacitive structure, and an inductive structure to form a composite right / left-handed mode structure. Specifically, the first radiation section includes a first feeding point and a first connection point that are spaced apart; the first radiation section is spaced apart from one edge of the reference ground plane; a first end of the capacitive structure is electrically connected to the first connection point, and a second end of the capacitive structure is electrically connected to the first feeding point; one end of the inductive structure is electrically connected to the first feeding point, and the other end of the inductive structure is grounded; one end of the first feed source is electrically connected to the first feeding point. According to the composite right / left-handed mode structure, a zero-order resonance can be formed within a preset frequency range. The first feed source is used to excite the first radiation section to form a zero-order resonance supporting a first frequency band. In this way, the current dispersion is reduced, the generation of reverse current is avoided, so as to improve the efficiency of the first frequency band and enhance the antenna performance.

[0012] In a second aspect, an electronic device provided by the present application, the electronic device includes:

[0013] A reference floor;

[0014] An antenna assembly, the antenna assembly includes:

[0015] A first radiator, at least part of the first radiator is spaced from the edge of the reference floor, the first radiator includes a first feeding point and a first open end;

[0016] A second radiator, at least part of the second radiator is spaced from the edge of the reference floor, the second radiator includes a second open end and a first connection point, a coupling gap is formed between the first open end and the second open end;

[0017] A capacitive structure, a first end of the capacitive structure is electrically connected to the first connection point, and a second end of the capacitive structure is electrically connected to the first feeding point;

[0018] An inductive structure, one end of the inductive structure is electrically connected to the first feeding point, and the other end of the inductive structure is grounded;

[0019] A first feed source, the first feed source is electrically connected to the first feeding point, and the first feed source is used to excite a loop current formed between the first feeding point and the first connection point and on the capacitive structure.

[0020] In a third aspect, an electronic device provided by the present application, the electronic device includes the antenna assembly described in the first aspect and the second aspect. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below.

[0022] Figure 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

[0023] Figure 2 is an exploded schematic diagram of an electronic device provided by an embodiment of the present application;

[0024] Figure 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present application with the first antenna assembly removed from the rear cover;

[0025] Figure 4 is a partial structural schematic diagram of an electronic device provided by an embodiment of the present application with the second antenna assembly removed from the rear cover;

[0026] Figure 5It is a schematic diagram of the topological structure of the first antenna assembly provided in the first embodiment of the present application;

[0027] Figure 6 It is a schematic diagram of the topological structure of the second antenna assembly provided in the first embodiment of the present application;

[0028] Figure 7 It is the dispersion curve of the composite left - hand and right - hand structure provided in the embodiment of the present application;

[0029] Figure 8 It is a schematic diagram of the topological structure of the third antenna assembly provided in the first embodiment of the present application;

[0030] Figure 9 It is a schematic diagram of the topological structure of the fourth antenna assembly provided in the first embodiment of the present application;

[0031] Figure 10 It is a schematic diagram of the topological structure of the fifth antenna assembly provided in the first embodiment of the present application;

[0032] Figure 11 It is a schematic diagram of the topological structure of the sixth antenna assembly provided in the first embodiment of the present application;

[0033] Figure 12 It is a schematic diagram of the topological structure of the seventh antenna assembly provided in the first embodiment of the present application;

[0034] Figure 13 It is a schematic diagram of the topological structure of the eighth antenna assembly provided in the first embodiment of the present application;

[0035] Figure 14 It is a schematic diagram of the topological structure of the ninth antenna assembly provided in the first embodiment of the present application;

[0036] Figure 15 It is a schematic diagram of the topological structure of the tenth antenna assembly provided in the first embodiment of the present application;

[0037] Figure 16 It is a schematic diagram of the topological structure of the eleventh antenna assembly provided in the first embodiment of the present application;

[0038] Figure 17 It is a schematic diagram of the topological structure of the twelfth antenna assembly provided in the first embodiment of the present application;

[0039] Figure 18 It is a schematic diagram of the topological structure of the thirteenth antenna assembly provided in the first embodiment of the present application;

[0040] Figure 19 It is a schematic diagram of the topological structure of the fourteenth antenna assembly provided in the first embodiment of the present application;

[0041] Figure 20It is a schematic diagram of the topological structure of the fifteenth antenna assembly provided in the first embodiment of the present application;

[0042] Figure 21 It is a schematic diagram of the topological structure of the first antenna assembly provided in the second embodiment of the present application;

[0043] Figure 22 It is a schematic diagram of the topological structure of the second antenna assembly provided in the second embodiment of the present application;

[0044] Figure 23 It is a schematic diagram of the topological structure of the third antenna assembly provided in the second embodiment of the present application;

[0045] Figure 24 It is a schematic diagram of the topological structure of the fourth antenna assembly provided in the second embodiment of the present application;

[0046] Figure 25 It is a schematic diagram of the topological structure of the fifth antenna assembly provided in the second embodiment of the present application;

[0047] Figure 26 It is a schematic diagram of the topological structure of the electronic device provided in the second embodiment of the present application;

[0048] Figure 27 It is a schematic diagram of the current when the antenna assembly provided in the present application forms a zero-order resonance in Wi-Fi 5G;

[0049] Figure 28 It is a schematic diagram of the current when the antenna operates in Wi-Fi 5G to generate the fundamental mode and higher-order modes;

[0050] Figure 29 It is the efficiency curve of the antenna assembly forming a zero-order resonance and the antenna assembly forming the fundamental mode and higher-order modes provided in the present application;

[0051] Figure 30 It is the current distribution simulation of the antenna assembly forming a zero-order resonance provided in the present application Figure 1 ;

[0052] Figure 31 It is the current distribution simulation of the antenna assembly forming a zero-order resonance provided in the present application Figure 2 ;

[0053] Figure 32 It is a schematic diagram of the antenna assembly provided in the present application disposed on the top border;

[0054] Figure 33 It is the S-parameter curve when the dimensions of the second sub-radiating section in the antenna assembly forming a zero-order resonance provided in the present application are 1.5 mm and 3 mm respectively;

[0055] Figure 34The efficiency curves of the second sub-radiation segments provided by this application have dimensions of 1.5 mm and 3 mm respectively;

[0056] Figure 35 The S-parameter curves of the capacitive structure of the antenna assembly provided by this application have capacitance values of 0.2 pF and 0.3 pF;

[0057] Figure 36 The efficiency curves of the capacitive structure of the antenna assembly provided by this application have capacitance values of 0.2 pF and 0.3 pF;

[0058] Figure 37 The current distribution simulation of the antenna assembly that forms a zero-order resonance and is provided on the top border by this application Figure 1 ;

[0059] Figure 38 The current distribution simulation of the antenna assembly that forms a zero-order resonance and is provided on the top border by this application Figure 2 ;

[0060] Figure 39 The S-parameter curves of the first sub-radiation segments provided by this application have dimensions of 0.5 mm and 1 mm respectively;

[0061] Figure 40 The efficiency curves of the first sub-radiation segments provided by this application have dimensions of 0.5 mm and 1 mm respectively.

[0062] Explanation of the reference numerals in the drawings:

[0063] Electronic device 1000; Antenna assembly 100; Display screen 200; Middle frame 300; Rear cover 400; Frame 320; Top border 321; First side border 322; Second side border 323; Bottom border 324; First radiation segment 11; Reference floor 500; Capacitive structure 30; Inductive structure 40; First feed source 51; First feed point A1; First connection point H1; First protruding segment 13; Second protruding segment 14; First floor edge 510; Second floor edge 520; Third floor edge 530; Fourth floor edge 540; First sub-radiation segment 111; Second sub-radiation segment 112; Coupling gap G1; Electrical connector 70; First electrical connector 71; Second electrical connector 72; First inner branch 15; Second inner branch 16; First conductive trace 17; Second conductive trace 18; First capacitive element 33; First capacitor plate 31; Second capacitor plate 32; Second radiation segment 19; First inductive element 41; First tuning circuit 81; First switch unit 82; Second switch unit 83; Second tuning circuit 84; Third switch unit 85; Third radiation segment 20; Second feed source 52; Second feed point A2. Detailed implementation manners

[0064] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present application without creative efforts belong to the protection scope of the present application.

[0065] In the present application, the mention of "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an exclusive, independent or alternative embodiment to other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0066] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example: a component or device including one or more components is not limited to the one or more components listed, but optionally further includes one or more components not listed but inherent to the product shown, or one or more components that should be had based on the described function.

[0067] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an electronic device 1000 provided by an embodiment of the present application. The electronic device 1000 includes, but is not limited to, devices with communication functions such as mobile phones, tablet computers, laptop computers, computers, wearable devices, drones, robots, digital cameras, etc. The embodiment of the present application takes a mobile phone as an example for illustration, and other electronic devices can refer to this embodiment.

[0068] Please refer to Figure 2 , Figure 2It is a partial exploded view of the electronic device 1000 provided by an embodiment of the present application. The electronic device 1000 includes an antenna assembly 100. Taking the electronic device 1000 as a mobile phone as an example, the working environment of the antenna assembly 100 is illustrated. The electronic device 1000 includes a display screen 200, a middle frame 300, and a rear cover 400 sequentially arranged in the thickness direction. Among them, the electronic device 1000 further includes a frame 320. The frame 320 surrounds the peripheries of the display screen 200, the middle frame 300, and the rear cover 400. The frame 320 is a conductive frame, such as a metal frame. Accommodating spaces are formed between the display screen 200 and the middle frame 300, and between the middle frame 300 and the rear cover 400 to accommodate components such as a main board 600, a camera module, a receiver module, a battery 700, a secondary board 800, and various sensors. One side of the frame 320 in the thickness direction is connected to the edge of the display screen 200, and the other side of the frame 320 in the thickness direction is connected to the edge of the rear cover 400 to form a complete appearance structure of the electronic device 1000. In this embodiment, the frame 320 and the middle frame 300 are of an integral structure, for example, formed by processing a metal sheet. The frame 320 and the rear cover 400 are of a split structure. 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-mentioned working environment.

[0069] Please refer to Figure 3 , Figure 3 is a partial rear view of the electronic device 1000 with the rear cover 400 removed provided by an embodiment of the present application. 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. The top frame 321 and the bottom frame 324 are oppositely arranged, and the first side frame 322 and the second side frame 323 are connected between the top frame 321 and the bottom frame 324 and are oppositely arranged. Among them, the top frame 321 is the side away from the ground when the user holds the electronic device 1000 and uses it in a vertical screen manner, and the bottom frame 324 is the side facing the ground when the user holds the electronic device 1000 and uses it in a vertical screen manner. The first side frame 322 is the left side when the user holds the electronic device 1000 and uses it in a vertical screen manner. The second side frame 323 is the right side when the user holds the electronic device 1000 and uses it in a vertical screen manner. Of course, the first side frame 322 can also be the right side when the user holds the electronic device 1000, and the second side frame 323 is the left side when the user holds the electronic device 1000.

[0070] Optionally, the top frame 321 is a straight frame, and the main parts in the middle of the first side frame 322 and the second side frame 323 are straight frames, and the two ends are bent frames. Among them, the bending angles of the bent frames at both ends of the first side frame 322 are both close to or 90°. The bending angles of the bent frames at both ends of the second side frame 323 are both close to or 90°. Among them, the bent frames are bent in an arc shape. The bottom frame 324 is a straight frame.

[0071] The following takes the accompanying drawings as an example to illustrate the specific structure of the antenna assembly 100 provided in the first embodiment.

[0072] Please refer to Figure 3 and Figure 4 , the antenna assembly 100 includes a first radiation section 11, a capacitive structure 30, an inductive structure 40, and a first feed source 51.

[0073] This application does not specifically limit the material of the first radiation section 11. Optionally, the material of the first radiation section 11 is a conductive material, specifically including but not limited to conductive materials such as metals and alloys. This application does not specifically limit the shape of the first radiation section 11. For example, the shape of the first radiation section 11 includes but is not limited to strip-shaped, sheet-shaped, rod-shaped, coated-shaped, film-shaped, etc. Figure 3 The shown first radiation section 11 is only an example and cannot limit the shape of the first radiation section 11 provided by this application. In this embodiment, the first radiation sections 11 are all strip-shaped. This application does not limit the extension trajectory of the first radiation section 11. Optionally, the first radiation section 11 can extend along a straight line, or along a curve, or along a bent line. The above-mentioned first radiation section 11 can be a line with a uniform width on the extension trajectory, or a strip with a gradually changing width, a widened area, or other unequal widths.

[0074] This application does not specifically limit the form of the first radiation section 11. Optionally, the form of the first radiation section 11 includes but is not limited to a metal frame 320, a metal frame embedded in a plastic frame 320, a metal radiator located inside or on the surface of the frame 320, a flexible circuit board antenna formed on a flexible printed circuit board (FPC), a laser direct structuring (LDS) antenna formed by laser direct structuring, a print direct structuring (PDS) antenna formed by direct printing, a conductive sheet antenna (such as a metal bracket antenna), etc. In this embodiment, an example is given where the first radiation section 11 is a part of the metal frame 320 of the electronic device 1000.

[0075] This application does not specifically limit the specific position of the first radiation section 11 on the metal frame 320. For example, the first radiation section 11 can be provided on the top frame 321, or the first side frame 322, or the second side frame 323, or the bottom frame 324, etc.

[0076] This application takes the first radiation section 11 located on the top frame 321 as an example.

[0077] Please refer toFigure 3 and Figure 4 The electronic device 1000 further includes a reference ground plane 500. The reference ground plane 500 is disposed within the area surrounded by the frame 320. The shape of the reference ground plane 500 is generally rectangular. Due to the need to set components or avoid other structures in the mobile phone, various slots, holes, etc. are opened on the reference ground edge of the reference ground plane 500. The reference ground plane 500 includes, but is not limited to, the metal alloy part of the middle frame 300 and the reference ground metal part of the circuit board (including the main board 600 and the secondary board 800).

[0078] Please refer to Figures 3 - 6 , the first radiation section 11 includes a first feeding point A1 and a first connection point H1 which are spaced apart.

[0079] Specifically, please refer to Figures 3 - 6 , the first radiation section 11 is a section on the metal frame 320. The first feeding point A1 is a part of the first radiation section 11. In order to facilitate the connection between the first feeding point A1 and the first feed source 51, a small convex portion, such as the subsequent first protruding section 13, may be protruded at the position of the first feeding point A1 on the inner wall of the first radiation section 11, so as to be electrically connected to the first feed source 51 on the main board 600 through a feeding elastic sheet. Of course, in other embodiments, a small convex portion may not be provided at the position of the first feeding point A1.

[0080] Please refer to Figures 3 - 6 , the first connection point H1 is a part of the first radiation section 11. In order to facilitate the electrical connection between the first connection point H1 and other structures, a small convex portion, such as the subsequent second protruding section 14, may be protruded at the position of the first connection point H1 on the inner wall of the first radiation section 11. Of course, in other embodiments, a small convex portion may not be provided at the position of the first connection point H1.

[0081] The first radiation section 11 is spaced apart from an edge of the reference ground plane 500. A coupling gap is formed between the first radiation section 11 and an edge of the reference ground plane 500, and the first radiation section 11, the coupling gap, and an edge of the reference ground plane 500 form an equivalent parallel capacitor.

[0082] Specifically, please refer to Figure 3 and Figure 4 , the reference ground plane 500 includes a first ground edge 510, a second ground edge 520, a third ground edge 530, and a fourth ground edge 540 that are sequentially connected end to end. Among them, the first ground edge 510 is disposed opposite to the top frame 321. The second ground edge 520 is disposed opposite to the first side frame 322. The third ground edge 530 is disposed opposite to the second side frame 323. The fourth ground edge 540 is disposed opposite to the bottom frame 324.

[0083] Taking the case where the first radiation section 11 is located on the top border 321 as an example. The first radiation section 11 is arranged along the direction in which the first floor edge 510 extends. The first radiation section 11 is arranged at an interval from the first floor edge 510. When the first radiation section 11 is located on the first side border 322, the first radiation section 11 is arranged along the direction in which the second floor edge 520 extends, and the first radiation section 11 is arranged at an interval from the second floor edge 520.

[0084] Please refer to Figure 3 and Figure 4 , the first end of the capacitive structure 30 is electrically connected to the first connection point H1, and the second end of the capacitive structure 30 is electrically connected to the first feeding point A1. Optionally, the first radiation section 11 and the capacitive structure 30 are connected end to end to form a loop-like circuit. Optionally, the electrical connection described in the present application includes, but is not limited to, a direct contact electrical connection or an indirect electrical connection through other structures.

[0085] The capacitive structure 30 includes, but is not limited to, a capacitive component or a distributed structure (two electrode plates are opposite and coupled to form an equivalent capacitor), etc.

[0086] Please refer to Figure 3 and Figure 4 , one end of the inductive structure 40 is electrically connected to the first feeding point A1, and the other end of the inductive structure 40 is grounded. The inductive structure 40 includes, but is not limited to, an inductive component or a conductive structure with a certain inductive value, etc.

[0087] The first feed source 51 includes, but is not limited to, a radio frequency transceiver chip, a radio frequency front-end module, etc.

[0088] Please refer to Figure 3 and Figure 4 , the first feed source 51 is electrically connected to the first feeding point A1. 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 51 and the first feeding point A1 are indirectly electrically connected through a radio frequency transmission trace, a feeding elastic sheet, etc.

[0089] Further optionally, please refer to Figure 3 and Figure 4 , the antenna assembly 100 further includes a first matching circuit M1. The first matching circuit M1 is electrically connected between the first feed source 51 and the first feeding point A1. The first matching circuit M1 includes at least one of a capacitor and an inductor, and the first matching circuit M1 is used to achieve impedance matching between the port of the first feed source 51 (the aforementioned feeding port) and the first radiation section 11.

[0090] The first feed source 51 is used to excite the first radiation section 11 to form a zero-order resonance supporting the first frequency band.

[0091] Specifically, the first feeder 51 is at least used to provide radio frequency signals in the first frequency band. The first feeder 51 is used to excite the first radiation section 11 to form a zero-order resonance supporting the first frequency band.

[0092] The operating frequency of the zero-order resonance mode is independent of the physical size of the antenna. The resonant current distribution of the zero-order resonance is on the loop formed by the first radiation section 11 and the capacitive structure 30. The resonant current of the zero-order resonance is a loop current. The intensity of the resonant current of the zero-order resonance on the loop is strong and relatively uniform. The phase of the resonant current of the zero-order resonance remains unchanged. There is no reverse current in the resonant current of the zero-order resonance.

[0093] This 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), MHB frequency band (1 - 3 GHz), UHB frequency band (greater than 3 GHz), Wi-Fi frequency band, GPS frequency band, etc. For example, the first frequency band is the Wi-Fi 5G frequency band. In the antenna assembly 100 provided by this application, the first feeder 51 is used to excite the first radiation section 11 to form a zero-order resonance supporting the Wi-Fi 5G frequency band, so that the Wi-Fi 5G antenna can have better efficiency even when sharing the aperture with other antennas, and there will be no Wi-Fi 5G higher-order modes generated on adjacent antennas. Of course, in other embodiments, the first frequency band can also be other frequency bands.

[0094] The following gives an example to illustrate the principle of forming a zero-order resonance on the antenna assembly 100 provided by this application.

[0095] Please refer to Figure 3 and Figure 4 , for the signal path of the signals transmitted and received by the first feeder 51, the first radiation section 11 is equivalent to a series inductor; the capacitive structure 30 is equivalent to a series capacitor, and an equivalent parallel capacitor is formed between the first radiation section 11 and the first floor edge 510 of the reference floor 500; the inductive structure 40 is equivalent to a parallel inductor. The above antenna assembly 100 forms a composite left-handed and right-handed mode antenna structure.

[0096] It is found in the research that the relationship between the angular frequency (ω) and the phase shift constant (β) of the composite left-handed and right-handed mode structure can be expressed in the form of formula (1).

[0097]

[0098] Among them, L` R is the right-handed inductance (series inductance) in the composite left-handed and right-handed mode structure; C` R is the right-handed capacitance (parallel capacitance) in the composite left-handed and right-handed mode structure; L` Lis the inductance (parallel inductance) of the left-handed in the composite left- and right-handed mode structure; C` L is the capacitance (series capacitance) of the left-handed in the composite left- and right-handed mode structure.

[0099] Among them, s(ω) can be expressed by the following formula (2), and the specific formula (2) is as follows:

[0100]

[0101] Please refer to Figure 7 , Figure 7 is the dispersion curve of the composite left- and right-handed structure provided by the embodiment of the present application. It can be seen from the dispersion curve that when the angular frequency is within the preset angular frequency range (ωг1, ωг2), that is, ωг1 < ω < ωг2, the phase shift constant β has no mapping relationship with ω. According to β = 2π / λ and ω = 2πf, it can be known that the antenna wavelength and frequency no longer have a mapping relationship, indicating that the composite left- and right-handed mode structure can generate a zero-order resonance within the preset frequency range (the resonance frequency of the zero-order resonance is determined by the equivalent lumped parameters (such as LC), rather than the physical size). Further, according to the fact that the antenna wavelength and frequency no longer have a mapping relationship, it can be obtained that when the antenna size becomes larger or smaller, the antenna resonance of the zero-order resonance will not shift.

[0102] Generally, the resonance frequency point of the resonance is related to the antenna length. For example, when the antenna length of the main radiation section is close to 1 / 4 wavelength of the operating frequency, the fundamental mode can be generated. When the antenna lengths of adjacent radiation sections are close to 1 / 2 wavelength or 1 times wavelength of the operating frequency, high-order modes of the operating frequency will be generated, dispersing the excitation energy and reducing the efficiency of the operating frequency. Since the resonance frequency point of the zero-order resonance is independent of the antenna length, even when the antenna lengths of nearby radiation sections are close to 1 / 2 wavelength or 1 times wavelength of the operating frequency, high-order modes that affect the operating frequency will not be generated, avoiding the distribution of the resonance current to the radiation sections, reducing the current dispersion, and thus concentrating the operating frequency on the zero-order resonance and improving the efficiency of the operating frequency.

[0103] In addition, from Figure 7It can also be seen that when the angular frequency is within the preset angular frequency range (ωг1, ωг2), that is, ωг1 < ω < ωг2, the phase shift of the transmission line with a length of d is: Ф = -βd. It can be obtained that if β is always 0, the phase shift Ф of the transmission line with a length of d is always 0. That is, the phase shift of the resonant current on the antenna is 0, and the corresponding wavelength λ = 2π / β tends to infinity. At this time, the electromagnetic wave cannot form periodic propagation and is manifested as a static field or a direct current (frequency ω = 0) state, indicating that the phase of the electromagnetic wave or signal does not change with the spatial position during the propagation process. Then, there is no reverse current on the antenna, and no higher-order modes are generated. If a reverse current is generated on the antenna, it may cause the far-field energy to cancel and superimpose, thereby reducing the radiation performance. Based on this, the antenna assembly 100 provided in the present application forms a zero-order resonance, and the field distribution of the zero-order resonance is uniformized (such as the electric field and magnetic field hardly change with space), and the energy is concentrated near the equivalent LC element. That is, the zero-order resonance of the antenna assembly 100 is mainly concentrated in the loop formed by the first radiation section 11 and the capacitive structure 30, and no reverse current will be formed, reducing the cancellation and superposition of the far-field energy. Further, the antenna radiation performance is improved.

[0104] Generally, for some antennas, the branches may be reused with each other. For some antennas in certain frequency bands, higher-order modes may be generated on adjacent antennas, thereby causing a decline in the antenna performance.

[0105] The electronic device 1000 provided in the present application includes an antenna assembly 100 and a reference ground plane 500. By designing the antenna assembly 100 to include a first radiation section 11, a capacitive structure 30, and an inductive structure 40, a composite left-handed and right-handed mode structure is formed. Specifically, the first radiation section 11 includes a first feeding point A1 and a first connection point H1 arranged at intervals; the first radiation section 11 is arranged at an interval from an edge of the reference ground plane 500; a first end of the capacitive structure 30 is electrically connected to the first connection point H1, and a second end of the capacitive structure 30 is electrically connected to the first feeding point A1; one end of the inductive structure 40 is electrically connected to the first feeding point A1, and the other end of the inductive structure 40 is grounded; one end of the first feeder 51 is electrically connected to the first feeding point A1. According to the composite left-handed and right-handed mode structure, a zero-order resonance can be formed within a preset frequency range. The first feeder 51 is used to excite the first radiation section 11 to form a zero-order resonance supporting the first frequency band. In this way, the formation of higher-order modes is reduced, the generation of reverse current is avoided, and the efficiency of the first frequency band is improved, thereby enhancing the antenna performance.

[0106] In short, the antenna assembly 100 provided in the present application forms a composite left-handed and right-handed structure, and forms a zero-order resonance loop current in the loop formed by the first radiation section 11 and the capacitive structure 30. The direction of the zero-order resonance loop current will be a clockwise current or a counterclockwise uniform-intensity current in the loop, without a current zero point.

[0107] The following specifically describes the first radiation section 11 of the antenna assembly 100 in conjunction with the accompanying drawings.

[0108] Optionally, please refer to Figure 5 and Figure 6 , the equivalent electrical length of the first radiation section 11 is less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band. Here, the wavelength is the dielectric wavelength.

[0109] It should be noted that the equivalent electrical length of the first radiation section 11 being less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band includes, but is not limited to, that when no tuning circuit is connected to the first radiation section, the physical length of the first radiation section 11 is less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band; or, after the tuning circuit is connected to the first radiation section 11, the equivalent size of the first radiation section 11 after connecting the tuning circuit is less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band.

[0110] From the perspective of the equivalent LC circuit of the composite left - handed and right - handed mode structure, if the equivalent electrical length of the first radiation section 11 is greater than 1 / 2 wavelength of the first frequency band, the inductance value of the equivalent series inductor is too large, and then the capacitance value of the capacitive structure 30 to be set is too small. Such a small capacitance value is equivalent to an open circuit for the operating frequency band, destroying the aforementioned composite left - handed and right - handed mode structure, and further resulting in the inability to form the aforementioned zero - order resonance.

[0111] From another perspective, when the equivalent electrical length of the first radiation section 11 is greater than 1 / 2 wavelength of the first frequency band, it may cause other resonance modes, such as high - order modes like the circular mode (1 / 2 wavelength mode), to be excited on the first radiation section 11 by the first feed 51. There is a current zero point between the two currents of the circular mode, and this high - order mode generates reverse currents, resulting in a reduction in radiation energy and further a decrease in efficiency.

[0112] If the equivalent electrical length of the first radiation section 11 is less than 1 / 4 wavelength of the first frequency band, the equivalent electrical length of the first radiation section 11 is too short, and a larger capacitance value of the capacitive structure 30 needs to be set. When the capacitance value of the capacitive structure 30 is too large, the capacitive structure 30 with too large a capacitance value is equivalent to a short - circuit for the operating frequency band, destroying the aforementioned composite left - handed and right - handed mode structure, and further resulting in the inability to form the aforementioned zero - order resonance.

[0113] In this application, by designing the equivalent electrical length of the first radiation section 11 to be less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band, it is beneficial for the inductance value of the series inductor and the capacitance value of the parallel capacitor to be within a suitable range, and further beneficial for forming the conditions to meet the zero - order resonance to form the zero - order resonance.

[0114] Optionally, taking the first frequency band as the Wi-Fi 5G frequency band as an example, the equivalent electrical length of the first radiation section 11 is less than or equal to 1 / 2 wavelength of the Wi-Fi 5G frequency band and greater than 1 / 4 wavelength of the Wi-Fi 5G frequency band, which is conducive to forming a zero-order resonance supporting the Wi-Fi 5G frequency band, thereby improving the performance of the Wi-Fi 5G frequency band.

[0115] Further optionally, please refer to Figure 6 , the first radiation section 11 includes a first sub-radiation section 111 and a second sub-radiation section 112.

[0116] Please refer to Figure 6 , the first feeding point A1 is located at one end of the first sub-radiation section 111 away from the second sub-radiation section 112. The first connection point H1 is located at one end of the second sub-radiation section 112 away from the first sub-radiation section 111. A coupling slot G1 is provided between the first sub-radiation section 111 and the second sub-radiation section 112.

[0117] Of course, in other embodiments, no coupling slot G1 is provided between the first feeding point A1 and the first connection point H1.

[0118] Generally, as the number of antennas on the electronic device increases and the space on the electronic device is limited, shared-aperture antennas can be formed between antennas of different frequency bands, so that more antennas can be provided on the electronic device. Based on this, in this application, by providing that the first radiation section 11 includes a first sub-radiation section 111 and a second sub-radiation section 112, wherein the coupling gap between the first sub-radiation section 111 and the second sub-radiation section 112, so that the second sub-radiation section 112 can not only be used as a resonant structure for the zero-order resonance of the first frequency band, but also can be used as the main radiation branch of antennas of other frequency bands, etc., so that more antennas can be provided on the electronic device, and thus the electronic device can support more frequency bands.

[0119] Further optionally, please refer to Figure 6 , the sum of the equivalent electrical lengths of the first sub-radiation section 111 and the second sub-radiation section 112 is less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band. Wherein, the wavelength is the dielectric wavelength.

[0120] It should be noted that the sum of the equivalent electrical lengths of the first sub-radiating section 111 and the second sub-radiating section 112 is less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band, including but not limited to: in the case of not connecting a tuning circuit, the sum of the physical lengths of the first sub-radiating section 111 and the second sub-radiating section 112 is less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band; or, after connecting the tuning circuit, the equivalent sizes of the first sub-radiating section 111 and the second sub-radiating section 112 are less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band.

[0121] From the perspective of the equivalent LC circuit of the composite left-handed and right-handed mode structure, if the sum of the equivalent electrical lengths of the first sub-radiating section 111 and the second sub-radiating section 112 is greater than 1 / 2 wavelength of the first frequency band, the inductance value of the series inductor is too large, and then the capacitance value of the capacitive structure 30 to be set is too small. The too-small capacitance value is equivalent to an open circuit for the operating frequency band, which destroys the aforementioned composite left-handed and right-handed mode structure, and further causes the inability to form the aforementioned zero-order resonance.

[0122] From another perspective, when the sum of the equivalent electrical lengths of the first sub-radiating section 111 and the second sub-radiating section 112 is greater than 1 / 2 wavelength of the first frequency band, it may cause other resonance modes to be excited on the first sub-radiating section 111 and the second sub-radiating section 112 by the first feed 51, such as high-order modes such as a ring mode (1 / 2 wavelength mode). There is a current zero point between the two currents of this ring mode, and this high-order mode generates reverse current, resulting in a reduction in radiation energy and further a reduction in efficiency.

[0123] If the sum of the equivalent electrical lengths of the first sub-radiating section 111 and the second sub-radiating section 112 is less than 1 / 4 wavelength of the first frequency band, the sum of the equivalent electrical lengths of the first sub-radiating section 111 and the second sub-radiating section 112 is too short, and a larger capacitance value of the capacitive structure 30 needs to be set. When the capacitance value of the capacitive structure 30 is too large, the capacitive structure 30 with too large a capacitance value is equivalent to a conducting path for the operating frequency band, which destroys the aforementioned composite left-handed and right-handed mode structure, and further causes the inability to form the aforementioned zero-order resonance.

[0124] In this application, by designing the sum of the equivalent electrical lengths of the first sub-radiating section 111 and the second sub-radiating section 112 to be less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band, it is beneficial for the inductance value of the series inductor and the capacitance value of the parallel capacitor to be within a suitable range, and further beneficial for forming the conditions for satisfying the zero-order resonance to form the zero-order resonance.

[0125] Further, please refer to Figure 6, the equivalent electrical length of the first sub-radiating section 111 is less than 1 / 4 wavelength of the first frequency band.

[0126] It should be noted that the equivalent electrical length of the first sub-radiating section 111 is less than or equal to 1 / 4 wavelength of the first frequency band, including but not limited to that when the first sub-radiating section 111 is not connected to a tuning circuit, the physical length of the first sub-radiating section 111 is less than or equal to 1 / 4 wavelength of the first frequency band; or, after the first sub-radiating section 111 is connected to a tuning circuit, the equivalent size of the first sub-radiating section 111 after connecting the tuning circuit is less than or equal to 1 / 4 wavelength of the first frequency band.

[0127] If the equivalent electrical length of the first sub-radiating section 111 is greater than 1 / 4 wavelength of the first frequency band, since the capacitive structure 30 is in series with the first sub-radiating section 111, it is equivalent to increasing the equivalent electrical length of the first sub-radiating section 111. Then, it is easy to form higher-order modes of the first frequency band on the longer first sub-radiating section 111, thereby generating reverse current, resulting in a reduction in radiation energy and further a reduction in efficiency.

[0128] By designing the equivalent electrical length of the first sub-radiating section 111 to be less than 1 / 4 wavelength of the first frequency band, it is avoided that the equivalent electrical length of the first sub-radiating section 111 is too long, so as to avoid the formation of other higher-order mode resonances on the first sub-radiating section 111. At the same time, it is also avoided that the equivalent electrical length of the second sub-radiating section 112 is too long, so as to avoid the formation of other higher-order mode resonances on the second sub-radiating section 112, thereby generating reverse current, resulting in a reduction in radiation energy and further a reduction in efficiency.

[0129] Further optionally, please refer to Figure 6 , the equivalent electrical length of the second sub-radiating section 112 is less than 1 / 4 wavelength of the first frequency band.

[0130] It should be noted that the equivalent electrical length of the second sub-radiating section 112 is less than or equal to 1 / 4 wavelength of the first frequency band, including but not limited to that when the second sub-radiating section 112 is not connected to a tuning circuit, the physical length of the second sub-radiating section 112 is less than or equal to 1 / 4 wavelength of the first frequency band; or, after the second sub-radiating section 112 is connected to a tuning circuit, the equivalent size of the second sub-radiating section 112 after connecting the tuning circuit is less than or equal to 1 / 4 wavelength of the first frequency band.

[0131] If the equivalent electrical length of the second sub-radiating section 112 is greater than 1 / 4 wavelength of the second frequency band, since the capacitive structure 30 is in series with the second sub-radiating section 112, it is equivalent to increasing the equivalent electrical length of the second sub-radiating section 112. Then, it is easy to form higher-order modes of the first frequency band on the longer second sub-radiating section 112, thereby generating reverse current, resulting in a reduction in radiation energy and further a reduction in efficiency.

[0132] By designing the equivalent electrical length of the second sub-radiating section 112 to be less than 1 / 4 wavelength of the second frequency band, the equivalent electrical length of the first sub-radiating section 111 is prevented from being too long, so as to avoid the formation of other high-order mode resonances on the first sub-radiating section 111. At the same time, the equivalent electrical length of the second sub-radiating section 112 is also prevented from being too long, so as to avoid the formation of other high-order mode resonances on the second sub-radiating section 112, thereby generating a reverse current, resulting in a reduction in radiation energy and further causing a decrease in efficiency.

[0133] The capacitive structure 30 and the electrical connection structure between the capacitive structure 30 and the first radiating section 11 will be described below with reference to the accompanying drawings by way of example.

[0134] Optionally, please refer to Figure 5 and Figure 6 , the antenna assembly 100 further includes at least one electrical connector 70.

[0135] Please refer to Figure 8 , Figures 10 - 12 , the at least one electrical connector 70 includes a first electrical connector 71. The first end of the first electrical connector 71 is electrically connected to the first feeding point A1. The second end of the first electrical connector 71 is electrically connected to the second end of the capacitive structure 30; and / or,

[0136] Please refer to Figures 9 - 12 , the antenna assembly 100 further includes at least one electrical connector 70. The at least one electrical connector 70 includes a second electrical connector 72. The first end of the second electrical connector 72 is electrically connected to the first connection point H1. The second end of the second electrical connector 72 is electrically connected to the first end of the capacitive structure 30.

[0137] Generally, the distance between the first feeding point A1 and the first connection point H1 is relatively long, and the capacitive structure 30 cannot span such a long length. Therefore, the first electrical connector 71 and / or the second electrical connector 72 can be provided to be electrically connected between the two ends of the capacitive structure 30 and the first feeding point A1 and the first connection point H1 of the first radiating section 11 respectively.

[0138] Among them, the first electrical connector 71 includes but is not limited to a conductive trace, or a conductive spring piece, or a conductive stub, etc. The second electrical connector 72 includes but is not limited to a conductive trace, or a conductive spring piece, or a conductive stub, etc.

[0139] The structure of the first electrical connector 71 and the structure of the second electrical connector 72 can be the same or different.

[0140] Optionally, the electrical connector 70 is located in the gap between the first radiating section 11 and the reference floor 500. The electrical connector 70 and the first radiating section 11 are of an integral structure.

[0141] Specifically, please refer to Figure 8 and Figures 10 - 11 , the first electrical connector 71 is located between the first radiation section 11 and the first floor edge 510 of the reference floor 500. Further, the antenna assembly 100 further includes a first protruding section 13 protruding from the first feeding point A1. The first electrical connector 71 is a first inner branch 15 provided inside the first radiation section 11. The first radiation section 11, the first protruding section 13, and the first inner branch 15 are interconnected into an integral structure. Among them, the first protruding section 13 extends toward the side where the fourth floor edge 540 is located, and the first inner branch 15 extends along the extending direction of the first radiation section 11.

[0142] Specifically, please refer to Figures 9 - 11 , the second electrical connector 72 is located between the first radiation section 11 and the first floor edge 510 of the reference floor 500. Further, the antenna assembly 100 further includes a second protruding section 14 protruding from the first connection point H1. The second electrical connector 72 is a second inner branch 16 provided inside the first radiation section 11. The first radiation section 11, the second protruding section 14, and the second inner branch 16 are interconnected into an integral structure. Among them, the second protruding section 14 extends toward the side where the fourth floor edge 540 is located, and the second inner branch 16 extends along the extending direction of the first radiation section 11.

[0143] In this embodiment, by designing the first electrical connector 71 and the second electrical connector 72 to be interconnected with the first radiation section 11 into an integral structure. When forming the molding frame 320, the first electrical connector 71 and the second electrical connector 72 can be formed by milling or the like, without additionally providing a conductive wire and an electrical connection structure connected between the conductive wire and the first radiation section 11.

[0144] Please refer to Figure 12 and Figure 13 , the electrical connector 70 is a conductive trace. Specifically, the first electrical connector 71 can be a first conductive trace 17, and the second electrical connector 72 can be a second conductive trace 18. The first conductive trace 17 and the second conductive trace 18 can be provided on the circuit board. Further, the capacitive structure 30 includes a first capacitor element 33, and the first capacitor element 33 can be provided on the circuit board. The first conductive trace 17 can be electrically connected to the first feeding point A1 of the first radiation section 11 by welding, or a radio frequency transmission line, or conductive cotton, or a conductive elastic sheet, or a conductive abutting structure, etc. The second conductive trace 18 can be electrically connected to the first connection point H1 of the first radiation section 11 by welding, or a radio frequency transmission line, or conductive cotton, or a conductive elastic sheet, or a conductive abutting structure, etc.

[0145] Optionally, the capacitive structure 30 includes a first capacitor element 33, so as to obtain a first capacitor element 33 with a required capacitance value, and the capacitance value has high precision.

[0146] Optionally, please refer toFigure 11 The capacitive structure 30 includes a first capacitor plate 31 and a second capacitor plate 32. The first capacitor plate 31 and the second capacitor plate 32 are arranged opposite to each other. The distance between the first capacitor plate 31 and the second capacitor plate 32 is small, and a coupling capacitor is formed between the first capacitor plate 31 and the second capacitor plate 32. In this embodiment, the capacitance value of the capacitive structure 30 can be tuned by setting the distance between the first capacitor plate 31 and the second capacitor plate 32 or the facing area, so as to tune capacitive structures 30 with various capacitance values.

[0147] In a first alternative embodiment, please refer to Figure 8 , Figures 10 - 13 , a first end of the first electrical connector 71 is electrically connected to the first feeding point A1. A second end of the first electrical connector 71 is electrically connected to a second end of the capacitive structure 30, and a first end of the capacitive structure 30 is electrically connected to a first connection point H1.

[0148] Optionally, the first electrical connector 71 includes a conductive trace, or a first inner branch 15 disposed between the first sub-radiating section 111 and the reference floor 500 and interconnected with the first sub-radiating section 111 as a single body.

[0149] Further, a first protruding section 13 is provided at the first feeding point A1, and the first protruding section 13 extends toward the side where the fourth floor edge 540 of the reference floor 500 is located. The first protruding section 13 is spaced apart from the first floor edge 510. When the first electrical connector 71 is the first inner branch 15, one end of the first inner branch 15 is interconnected with the first protruding section 13 as a single body, and the first inner branch 15 extends along the direction in which the first radiating section 11 extends.

[0150] The other end of the first inner branch 15 is electrically connected to the second end of the capacitive structure 30.

[0151] Optionally, the capacitive structure 30 includes, but is not limited to, a first capacitive element 33, or a capacitor formed by the first capacitor plate 31 and the second capacitor plate 32.

[0152] When the first electrical connector 71 is the first inner branch 15 and the capacitive structure 30 is a capacitor formed by the first capacitor plate 31 and the second capacitor plate 32, the second capacitor plate 32 is interconnected with the first inner branch 15 as a single body structure, and the second capacitor plate 32 is directly or indirectly electrically connected to the first connection point H1.

[0153] In this embodiment, the first radiating section 11, the first electrical connector 71, and the capacitive structure 30 form a loop, and the loop current of the zero-order resonance is concentrated in the loop formed by the first radiating section 11, the first electrical connector 71, and the capacitive structure 30.

[0154] By arranging the first electrical connector 71 to be connected between the second end of the capacitive structure 30 and the first feeding point A1, on the one hand, compared with the case where both ends of the capacitive structure 30 are electrically connected to the first radiation section 11 through electrical connectors 70, in this embodiment, the electrical connection between the second electrical connector 72 and the first connection point H1 is reduced, simplifying the connection path. In addition, the first feed source 51 can be electrically connected to the end or the middle position of the first electrical connector 71, and the connection positions of the first feed source 51 are more and more flexible.

[0155] In other embodiments, the first feed source 51 can also be electrically connected between the first end of the capacitive structure 30 and the first connection point H1.

[0156] In the second alternative embodiment, please refer to Figures 9 - 13 , the second end of the capacitive structure 30 is electrically connected to the first feeding point A1 through the second electrical connector 72.

[0157] Optionally, the second electrical connector 72 includes a conductive trace, or a second inner branch 16 disposed between the second sub-radiation section 112 and the reference floor 500 and interconnected with the second sub-radiation section 112 as a single body, etc.

[0158] Further, a second protruding section 14 is provided at the first connection point H1, and the second protruding section 14 extends toward the side where the fourth floor edge 540 of the reference floor 500 is located. The second protruding section 14 is spaced apart from the first floor edge 510. When the second electrical connector 72 is the second inner branch 16, one end of the second inner branch 16 is interconnected with the second protruding section 14 as a single body, and the second inner branch 16 extends along the extending direction of the first radiation section 11.

[0159] The other end of the second inner branch 16 is electrically connected to the first end of the capacitive structure 30.

[0160] Optionally, the capacitive structure 30 includes, but is not limited to, a first capacitive element 33, or a capacitor formed by a first capacitor plate 31 and a second capacitor plate 32.

[0161] When the second electrical connector 72 is the second inner branch 16 and the capacitive structure 30 is a capacitor formed by a first capacitor plate 31 and a second capacitor plate 32, the first capacitor plate 31 is interconnected with the second inner branch 16 as a single body structure, and the second capacitor plate 32 is directly or indirectly electrically connected to the first feeding point A1.

[0162] In this embodiment, the first radiation section 11, the second electrical connector 72, and the capacitive structure 30 form a loop, and the loop current of the zero-order resonance is concentrated in the loop formed by the first radiation section 11, the second electrical connector 72, and the capacitive structure 30.

[0163] In this embodiment, by arranging the second electrical connector 72 to be connected between the first end of the capacitive structure 30 and the first connection point H1, on the one hand, compared with the case where both ends of the capacitive structure 30 are electrically connected to the first radiation section 11 through the electrical connectors 70, this embodiment reduces the electrical connection between the first electrical connector 71 and the first feeding point A1, simplifying the connection path. In addition, the first feed source 51 can be electrically connected to the end or the middle position of the second electrical connector 72, and the connection position of the first feed source 51 is more and more flexible.

[0164] In other embodiments, the first feed source 51 can also be electrically connected between the second end of the capacitive structure 30 and the first feeding point A1.

[0165] In the third alternative embodiment, please refer to Figure 11 , the first end of the first electrical connector 71 is electrically connected to the first feeding point A1. The second end of the first electrical connector 71 is electrically connected to the second end of the capacitive structure 30, and the first end of the second electrical connector 72 is electrically connected to the first connection point H1. The second end of the second electrical connector 72 is electrically connected to the first end of the capacitive structure 30.

[0166] Optionally, the first electrical connector 71 includes a first inner branch 15 disposed between the first sub-radiation section 111 and the reference floor 500 and interconnected with the first sub-radiation section 111 as a whole. The second electrical connector 72 includes a second inner branch 16 disposed between the second sub-radiation section 112 and the reference floor 500 and interconnected with the second sub-radiation section 112 as a whole.

[0167] Further, the first feeding point A1 is provided with a first protruding section 13, and the first protruding section 13 extends toward the side where the fourth floor edge 540 of the reference floor 500 is located. The first protruding section 13 is spaced apart from the first floor edge 510. When the first electrical connector 71 is the first inner branch 15, one end of the first inner branch 15 is interconnected with the first protruding section 13 as a whole, and the first inner branch 15 extends along the extending direction of the first radiation section 11.

[0168] The other end of the first inner branch 15 is electrically connected to the second end of the capacitive structure 30.

[0169] The first connection point H1 is provided with a second protruding section 14, and the second protruding section 14 extends toward the side where the fourth floor edge 540 of the reference floor 500 is located. The second protruding section 14 is spaced apart from the first floor edge 510. When the second electrical connector 72 is the second inner branch 16, one end of the second inner branch 16 is interconnected with the second protruding section 14 as a whole, and the second inner branch 16 extends along the extending direction of the first radiation section 11. The other end of the second inner branch 16 is electrically connected to the first end of the capacitive structure 30.

[0170] Optionally, the capacitive structure 30 includes, but is not limited to, a first capacitive element 33, or a capacitor formed by a first capacitor plate 31 and a second capacitor plate 32.

[0171] When the first electrical connector 71 is the first inner stub 15, the second electrical connector 72 is the second inner stub 16, and the capacitive structure 30 is a capacitor formed by the first capacitor plate 31 and the second capacitor plate 32, the second capacitor plate 32 is interconnected with the first inner stub 15 to form an integral structure, and the first capacitor plate 31 is interconnected with the second inner stub 16 to form an integral structure.

[0172] In this embodiment, the first radiation section 11, the first protruding section 13, the first inner stub 15, the capacitive structure 30, the second inner stub 16, and the second protruding section 14 form a loop. The loop current of the zero-order resonance is concentrated in the loop formed by the first radiation section 11, the first protruding section 13, the first inner stub 15, the capacitive structure 30, the second inner stub 16, and the second protruding section 14.

[0173] In this embodiment, the first electrical connector 71, the second electrical connector 72, and the first radiation section 11 are interconnected to form an integral structure. When forming the molding frame 320, the first electrical connector 71 and the second electrical connector 72 can be formed by milling or the like, without the need to additionally provide a conductive wire and an electrical connection structure connected between the conductive wire and the first radiation section 11. Further, the second capacitor plate 32 is interconnected with the first inner stub 15 to form an integral structure, and the first capacitor plate 31 is interconnected with the second inner stub 16 to form an integral structure. When forming the molding frame 320, the capacitive structure 30 can be formed by milling or the like, without the need to additionally provide a capacitive element, a conductive wire, and an electrical connection structure connected between the conductive wire and the first radiation section 11.

[0174] In the fourth alternative embodiment, please refer to Figure 12 , the first electrical connector 71 includes a first conductive trace 17. One end of the first conductive trace 17 is electrically connected to the first protruding section 13 provided at the first feeding point A1, and the other end of the first conductive trace 17 extends along the first radiation section 11 and is electrically connected to the second end of the capacitive structure 30.

[0175] The second electrical connector 72 includes a second conductive trace 18. One end of the second conductive trace 18 is electrically connected to the second protruding section 14 provided at the first connection point H1, and the other end of the second conductive trace 18 extends along the first radiation section 11 and is electrically connected to the first end of the capacitive structure 30.

[0176] The capacitive structure 30 includes, but is not limited to, a first capacitive element 33, etc.

[0177] In this embodiment, the first radiation section 11, the first protruding section 13, the first conductive trace 17, the first capacitive element 33, the second conductive trace 18, and the second protruding section 14 form a loop. The loop current of the zero-order resonance is concentrated in the loop formed by the first radiation section 11, the first protruding section 13, the first conductive trace 17, the first capacitive element 33, the second conductive trace 18, and the second protruding section 14.

[0178] In this embodiment, by arranging the first conductive trace 17, the first capacitive element 33, and the second conductive trace 18 that are electrically connected in sequence on the circuit board, and electrically connecting the first conductive trace 17 to the first radiation section 11 and the second conductive trace 18 to the second radiation section, the aforementioned loop is formed. There is no need to additionally process the first inner branch 15, the second inner branch 16, the capacitive structure 30, etc. inside the frame 320, which can simplify the processing difficulty of the frame 320 and reuse the structure of the frame 320 in general technologies.

[0179] In another alternative embodiment, please refer to Figure 14 , the first end of the capacitive structure 30 is electrically connected to the first connection point H1, and the second end of the capacitive structure 30 is electrically connected to the reference ground plane 500. The reference ground plane 500 is electrically connected to the first feeding point A1.

[0180] For example, the capacitive structure 30 is the first capacitive element 33. The first capacitive element 33 is arranged on the circuit board. One end of the first capacitive element 33 can be electrically connected to the first connection point H1 through a spring piece. Further, the other end of the capacitive structure 30 is electrically connected to the reference ground plane 500. The reference ground plane 500 is also electrically connected to the first feeding point A1 through a grounding capacitor or a grounding inductor in the first matching circuit M1. Therefore, the first radiation section 11, the grounding capacitor or the grounding inductor in the first matching circuit M1, the reference ground plane 500, and the capacitive structure 30 form a loop, and the first feeder 51 excites a zero-order resonance that supports the first frequency band in this loop.

[0181] In this embodiment, the first connection point H1 can be reused as the feeding point of another antenna (i.e., the subsequent second feeding point), and the first capacitive element 33 can be reused as a part of the matching circuit (i.e., the subsequent second matching circuit) of another antenna. In addition, the reference ground plane 500 is also electrically connected to the first feeding point A1 through a grounding inductor in the first matching circuit M1. This grounding inductor can be used as the aforementioned inductive structure 40, and the inductive structure 40 will be specifically described later.

[0182] Optionally, the capacitance of the capacitive structure 30 is 0.1 - 1 pF.

[0183] If the capacitance of the capacitive structure 30 is too small, the too-small capacitance value is equivalent to an open circuit for the operating frequency band, which destroys the aforementioned composite left-handed and right-handed mode structure, and further results in the inability to form the aforementioned zero-order resonance.

[0184] If the capacitance of the capacitive structure 30 is too large, the capacitive structure 30 with too large a capacitance value is equivalent to a conducting path for the operating frequency band, which destroys the aforementioned composite left-handed and right-handed mode structure, and further results in the inability to form the aforementioned zero-order resonance.

[0185] The capacitance of the capacitive structure 30 provided in this application is 0.1 to 1 pF. Further, the capacitance of the capacitive structure 30 is 0.1 to 0.5 pF. For example, the capacitance of the capacitive structure 30 includes but is not limited to any one of 0.1 pF, 0.2 pF, 0.3 pF, 0.4 pF, 0.5 pF or the data between the two.

[0186] In this application, by designing the capacitance of the capacitive structure 30 to be 0.1 to 1 pF and further designing the capacitance of the capacitive structure 30 to be 0.1 to 0.5 pF, the capacitance value of the series capacitor is within a suitable range, which is conducive to forming the conditions for satisfying the zero-order resonance to form the zero-order resonance.

[0187] Optionally, please refer to Figure 5 and Figure 6 , the antenna assembly 100 further includes a second radiation section 19.

[0188] The second radiation section 19 and the first radiation section 11 are of an integral structure. The first radiation section 11 is a part of the metal frame 320, and the second radiation section 19 is also a part of the metal frame 320. The first radiation section 11 and the second radiation section 19 are two connected parts on the metal frame 320.

[0189] One end of the second radiation section 19 is connected to the first feeding point A1, and the other end of the second radiation section 19 is the first grounding end.

[0190] The first grounding end D1 is electrically connected to the reference ground plane 500.

[0191] In this embodiment, since the grounded second radiation section 19 can be equivalent to a parallel inductor, the grounded second radiation section 19 can be the aforementioned inductive structure 40. That is, the first radiation section 11, the reference ground plane 500, the second radiation section 19 and the capacitive structure 30 can form the aforementioned composite left-handed and right-handed mode, and there is no need to additionally set a parallel inductor to the ground. The second radiation section 19 can also be reused as the radiation branch of other antennas.

[0192] Optionally, please refer to Figure 6, the first radiation section 11 includes a first sub-radiation section 111 and a second sub-radiation section 112, and the second radiation section 19 and the first sub-radiation section 111 are of an integral structure. The first sub-radiation section 111 and the second radiation section 19 can form a first radiator, and the first radiator includes a first grounding end D1, a first feeding point A1, and a first open end arranged in sequence. The first open end is the end of the first sub-radiation section 111 far from the first feeding point A1. The first feeder 51 is electrically connected to the first feeding point A1. The first feeder 51 is also used to support a first resonance mode for the second frequency band formed on the first sub-radiation section 111 and the second radiation section 19 (i.e., the first radiator).

[0193] The first feeder 51 can also provide a radio frequency signal for the second frequency band. The first resonance mode includes but is not limited to the 1 / 4 wavelength mode. Specifically, the equivalent electrical length of the first radiator is close to 1 / 4 wavelength of the second frequency band. The center frequency point of the second frequency band is less than the center frequency point of the first frequency band. Optionally, taking the first frequency band as the Wi-Fi 5G frequency band, the second 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 N78 frequency band, the Wi-Fi 2.4G frequency band, the GPS frequency band, etc.

[0194] For the antenna assembly 100 provided in this embodiment, by designing that the antenna assembly 100 further includes a second radiation section 19, and the first radiation section 11 includes a coupling slot G1, the second radiation section 19, the first sub-radiation section 111, and the first feeder 51 can form an antenna for supporting the second frequency band; the first feeder 51, the first radiation section 11, the capacitive structure 30, and the second radiation section 19 can form an antenna for supporting the first frequency band. Therefore, the antenna assembly 100 provided in this application can support multiple different frequency bands, and the compatible antenna assembly 100 can support multiple frequency bands and occupies a small space.

[0195] Optionally, please refer to Figure 15 and Figure 16 , the inductive structure 40 includes a first inductive element 41. One end of the first inductive element 41 is electrically connected to the first feeding point A1, and the other end of the first inductive element 41 is grounded.

[0196] The grounded first inductive element 41 can be equivalent to a parallel inductor. That is, the first radiation section 11, the reference floor 500, the first inductive element 41, and the capacitive structure 30 can form the aforementioned composite left-handed and right-handed mode to facilitate the formation of a zero-order resonance. Further optionally, the grounded first inductive element 41 can be a part of the first matching circuit M1.

[0197] If the length of the first sub-radiating section 111 is not suitable or the length of the second sub-radiating section 112 is not suitable due to structural limitations or space limitations, it may cause the resonance frequency point of the zero-order resonance not to be within the first frequency band, resulting in a low efficiency in the first frequency band. Based on this, the equivalent electrical length of the first sub-radiating section 111 or the second sub-radiating section 112 can be tuned by setting a tuning circuit, so that both the first sub-radiating section 111 and the second sub-radiating section 112 are within a suitable range, which is conducive to forming a zero-order resonance and the resonance frequency point of the zero-order resonance.

[0198] Optionally, please refer to Figure 17 , the antenna assembly 100 further includes a first tuning circuit 81. One end of the first tuning circuit 81 is electrically connected to the first connection point H1, and the other end of the first tuning circuit 81 is grounded. The first tuning circuit 81 is used to tune the equivalent electrical length of the second sub-radiating section 112. The first tuning circuit 81 includes at least one of an inductor or a capacitor. The first tuning circuit 81 is used to tune the equivalent electrical length of the second sub-radiating section 112, so that the resonance frequency point of the zero-order resonance is within the band of the first frequency band, thereby improving the efficiency of the first frequency band.

[0199] Specifically, when the length of the second sub-radiating section 112 is insufficient, resulting in the resonance frequency point of the zero-order resonance being higher than the first frequency band, the first tuning circuit 81 can be a capacitor to tune the resonance frequency point of the zero-order resonance to be within the band of the first frequency band, thereby improving the in-band efficiency of the first frequency band. When the length of the second sub-radiating section 112 is too long, resulting in the resonance frequency point of the zero-order resonance being lower than the first frequency band, the first tuning circuit 81 can be an inductor to tune the resonance frequency point of the zero-order resonance to be within the band of the first frequency band, thereby improving the in-band efficiency of the first frequency band.

[0200] Further optionally, the number of the first tuning circuits 81 is multiple. The impedance value and / or inductance value of each first tuning circuit 81 is different.

[0201] Please refer to Figure 18 , the antenna assembly 100 further includes a first switch unit 82. The fixed end of the first switch unit 82 is electrically connected to the first connection point H1, and the multiple selection ends of the first switch unit 82 are respectively electrically connected to one end of the multiple first tuning circuits 81. Each first tuning circuit 81 is grounded. Further, the fixed end of the first switch unit 82 can also be electrically connected to the aforementioned second inner branch 16 or the second conductive trace 18.

[0202] Further, the antenna assembly 100 further includes a controller, and the controller is electrically connected to the first switch unit 82.

[0203] In this embodiment, when the resonance frequency point of the zero-order resonance is not set within the first frequency band, the controller is configured to control the first switching unit 82 to switch different first tuning circuits 81 to be conducted with the first connection point H1, so that the resonance frequency point of the zero-order resonance is located within the frequency band of the first frequency band.

[0204] Further, the first frequency band includes a plurality of sub-frequency bands. For example, the first frequency band is the MHB frequency band, and the plurality of sub-frequency bands respectively include the B3 frequency band, the B1 frequency band, and the B41 frequency band.

[0205] The controller is configured to control the first switching unit 82 to switch different first tuning circuits 81 to be conducted with the first connection point H1, so that the resonance frequency point of the zero-order resonance is located within different sub-frequency bands of the first frequency band, so as to achieve switching between different sub-frequency bands and efficiency improvement, such as achieving frequency band switching between the B3 frequency band, the B1 frequency band, and the B41 frequency band, etc.

[0206] Optionally, the number of the capacitive structures 30 is multiple. The capacitance value of each capacitive structure 30 is different.

[0207] Please refer to Figure 19 , the antenna assembly 100 further includes a second switching unit 83. The fixed end of the second switching unit 83 is electrically connected to the first connection point H1. The multiple selection ends of the second switching unit 83 are respectively electrically connected to one ends of the multiple capacitive structures 30, and the other end of each capacitive structure 30 is electrically connected to the first feeding point A1.

[0208] When the resonance frequency point of the zero-order resonance is not set within the first frequency band, it indicates that the equivalent LC value of the composite left-handed and right-handed mode structure is not suitable. Based on this, the controller is configured to control the second switching unit 83 to switch different capacitive structures 30 to be connected between the first connection point H1 and the first feeding point A1, so that the resonance frequency point of the zero-order resonance is located within the first frequency band, and the in-band efficiency of the first frequency band is improved.

[0209] Optionally, please refer to Figure 20 , the antenna assembly 100 further includes a second tuning circuit 84. One end of the second tuning circuit 84 is electrically connected to the first feeding point A1, and the other end of the second tuning circuit 84 is grounded. The second tuning circuit 84 is configured to tune the equivalent electrical length of the first sub-radiating section 111. The second tuning circuit 84 includes an inductor or a capacitor, and the second tuning circuit 84 is configured to tune the equivalent electrical length of the first sub-radiating section 111, so that the resonance frequency point of the zero-order resonance is located within the band of the first frequency band, thereby improving the efficiency of the first frequency band.

[0210] Specifically, when the length of the first sub-radiation section 111 is insufficient, the resonance frequency point of the zero-order resonance is higher than the first frequency band. The second tuning circuit 84 can be a capacitor to tune the resonance frequency point of the zero-order resonance to be within the first frequency band, thereby improving the in-band efficiency of the first frequency band. When the length of the first sub-radiation section 111 is too long, the resonance frequency point of the zero-order resonance is lower than the first frequency band. The second tuning circuit 84 can be an inductor to tune the resonance frequency point of the zero-order resonance to be within the first frequency band, thereby improving the in-band efficiency of the first frequency band.

[0211] Further, please refer to Figure 20 , the antenna assembly 100 further includes a plurality of second tuning circuits 84. The impedance value of each second tuning circuit 84 is different. The antenna assembly 100 further includes a third switching unit 85. The fixed end of the third switching unit 85 is electrically connected to the first feeding point A1. The plurality of selection ends of the third switching unit 85 are respectively electrically connected to one end of the plurality of second tuning circuits 84. Each second tuning circuit 84 is grounded. Further, the fixed end of the third switching unit 85 can also be electrically connected to the aforementioned first inner branch 15 or the first conductive trace 17.

[0212] In this embodiment, when the resonance frequency point of the zero-order resonance is not set within the first frequency band, the controller is used to control the third switching unit 85 to switch different second tuning circuits 84 to be conducted with the first feeding point A1, so that the resonance frequency point of the zero-order resonance is within the frequency band of the first frequency band.

[0213] Further, the first frequency band includes a plurality of sub-frequency bands. For example, the first frequency band is the MHB frequency band, and the plurality of sub-frequency bands respectively include the B3 frequency band, the B1 frequency band, and the B41 frequency band.

[0214] The controller is used to control the third switching unit 85 to switch different second tuning circuits 84 to be conducted with the first feeding point A1, so that the resonance frequency point of the zero-order resonance is within different sub-frequency bands of the first frequency band, so as to achieve the switching between different sub-frequency bands and the efficiency improvement, such as achieving the frequency band switching between the B3 frequency band, the B1 frequency band, and the B41 frequency band, etc.

[0215] Further optionally, two or three of the first tuning circuit 81, the second tuning circuit 84, and the capacitive structure 30 can be switched synchronously to improve the tuning efficiency.

[0216] Further optionally, please refer to Figure 20 , the antenna assembly 100 further includes a third radiation section 20 and a second feed source 52. The first radiation section 11 includes a first sub-radiation section 111 and a second sub-radiation section 112. The third radiation section 20 and the second sub-radiation section 112 are of an integral structure.

[0217] One end of the third radiation section 20 is connected to the first connection point H1, and the other end of the third radiation section 20 is the second grounding end. The second grounding end is electrically connected to the reference ground plane 500.

[0218] Please refer to Figure 20 , the third radiation section 20 further includes a second feeding point A2. The second feed source 52 is electrically connected to the second feeding point A2. The second sub-radiation section 112 and the third radiation section 20 can form a second radiator, and the second radiator includes a second grounding end, a first connection point H1, and a second open end arranged in sequence. The second open end is the end of the second sub-radiation section 112 far from the first connection point H1.

[0219] The second feed source 52 is used to support a second resonance mode that supports the third frequency band formed on the second sub-radiation section 112 and the third radiation section 20 (the second radiator).

[0220] The second feed source 52 can also provide a radio frequency signal in the third frequency band. The second resonance mode includes but is not limited to the 1 / 4 wavelength mode. Specifically, the equivalent electrical length of the second radiator is close to 1 / 4 wavelength of the third frequency band. The center frequency point of the third frequency band is less than the center frequency point of the first frequency band. Optionally, taking the first frequency band as the Wi-Fi 5G frequency band, the third 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 N78 frequency band, the Wi-Fi 2.4G frequency band, the GPS frequency band, etc.

[0221] The antenna assembly 100 provided in this embodiment, by designing that the antenna assembly 100 further includes a third radiation section 20, and the first radiation section 11 includes a coupling slot G1, the third radiation section 20, the second sub-radiation section 112, and the second feed source 52 can form an antenna that supports the third frequency band; the first feed source 51, the first sub-radiation section 111, the second sub-radiation section 112, and the capacitive structure 30 can form an antenna that supports the third frequency band. Therefore, the antenna assembly 100 provided in this application can support multiple different frequency bands, and the compatible antenna assembly 100 can support multiple frequency bands and occupies a small space.

[0222] The following takes the accompanying drawings as an example to illustrate the specific structure of the antenna assembly 100 provided in Embodiment 2.

[0223] Please refer to Figure 21 , an antenna assembly 100 provided in the second embodiment of the present application. The antenna assembly 100 includes a first radiator 21, a second radiator 22, a capacitive structure 30, an inductive structure 40, and a first feed source 51.

[0224] The first radiator 21 includes a first feeding point A1 and a first open end E1.

[0225] In this embodiment, the first radiator 21 may refer to the first radiator 21 in the foregoing Embodiment 1.

[0226] Please refer to Figure 21 , the second radiator 22 includes a second open end E2 and a first connection point H1. A coupling gap G1 is formed between the first open end E1 and the second open end E2.

[0227] In this embodiment, the second radiator 22 may refer to the second radiator 22 in the foregoing Embodiment 1.

[0228] The first end of the capacitive structure 30 is electrically connected to the first connection point H1, and the second end of the capacitive structure 30 is electrically connected to the first feeding point A1. In this embodiment, the capacitive structure 30 may refer to the capacitive structure 30 in the foregoing Embodiment 1.

[0229] One end of the inductive structure 40 is electrically connected to the first feeding point A1, and the other end of the inductive structure 40 is grounded. In this embodiment, the inductive structure 40 may refer to the inductive structure 40 in the foregoing Embodiment 1.

[0230] The first feed source 51 is electrically connected to the first feeding point A1.

[0231] The first feed source 51 is used to excite a loop current formed between the first feeding point A1 and the first connection point H1, and on the capacitive structure 30. The first feed source 51 is used to excite a zero-order resonance supporting the first frequency band formed between the first feeding point A1 and the first connection point H1, and on the capacitive structure 30. A loop circuit is formed between the first feeding point A1 and the first connection point H1, and the capacitive structure 30.

[0232] Further optionally, the antenna assembly 100 includes a reference ground plane 500. The first radiator 21 and the second radiator 22 are disposed along the first floor edge 510 of the reference ground plane 500.

[0233] For the signal path transmitted and received by the first feed source 51, the part between the first feeding point A1 and the first connection point H1 on the first radiator 21 and the second radiator 22 is equivalent to a series inductor; the capacitive structure 30 is equivalent to a series capacitor, and a parallel capacitor is formed between the part between the first feeding point A1 and the first connection point H1 and the second floor of the reference ground plane 500; the inductive structure 40 is equivalent to a parallel inductor. The above antenna assembly 100 forms a composite right / left-handed mode antenna structure.

[0234] The zero-order resonance is distributed on the loop formed by the first radiation section 11 and the capacitive structure 30. The resonance current of the zero-order resonance is a loop current. The resonance current of the zero-order resonance is concentrated on the loop, and there is very little or no resonance current distributed between the first grounding end D1 and the first feeding point A1, and very little or no resonance current is distributed in the part between the first connection point H1 and the second grounding end. The resonance current of the zero-order resonance does not flow dispersedly to other structures (such as the screen, etc.), avoiding energy leakage and making the radiation efficiency relatively high. The intensity of the resonance current of the zero-order resonance on the loop is relatively strong and relatively uniform. The phase of the resonance current of the zero-order resonance remains unchanged, and there is no reverse current in the resonance current of the zero-order resonance, reducing the phase cancellation superposition of far-field energy, and further improving the radiation performance of the antenna.

[0235] The antenna assembly 100 provided by the present application, by designing that the antenna assembly 100 includes a first radiator 21, a second radiator 22, a reference ground plane 500, a capacitive structure 30, an inductive structure 40, and a first feed source 51. The first radiator 21 includes a first feeding point A1 and a first open end E1, and the second radiator 22 includes a second open end E2 and a first connection point H1. A coupling gap G1 is formed between the first open end E1 and the second open end E2. The first end of the capacitive structure 30 is electrically connected to the first connection point H1, and the second end of the capacitive structure 30 is electrically connected to the first feeding point A1. One end of the inductive structure 40 is electrically connected to the first feeding point A1, and the other end of the inductive structure 40 is grounded to form a composite right / left-handed mode structure. According to the composite right / left-handed mode structure, a zero-order resonance can be formed within a preset frequency range. The first feed source 51 is electrically connected to the first feeding point A1, and the first feed source 51 is used to excite a loop current between the first feeding point A1 and the first connection point H1 and on the capacitive structure 30, that is, the first feed source 51 is used to excite the first radiation section 11 to form a zero-order resonance supporting the first frequency band. In this way, the current dispersion is reduced, and the generation of reverse current is avoided, so as to improve the efficiency of the first frequency band and enhance the antenna performance.

[0236] Optionally, the antenna assembly 100 can be disposed on the top of the electronic device 1000, including but not limited to: at least part of the first radiator 21 is disposed on the top frame 321, the second radiator 22 is disposed on the top frame 321, or the first radiator 21 is disposed on the top frame 321, and at least part of the second radiator 22 is disposed on the top frame 321 and other implementation manners.

[0237] Optionally, the antenna assembly 100 can be disposed on the side of the electronic device 1000, including but not limited to: at least part of the first radiator 21 is disposed on the first side frame 322, and the second radiator 22 is disposed on the first side frame 322; or, the first radiator 21 is disposed on the first side frame 322, and at least part of the second radiator 22 is disposed on the first side frame 322. Of course, the first radiator 21 and the second radiator 22 can also be disposed on the second side frame 323, the bottom frame 324, etc.

[0238] Further optionally, please refer to Figure 21 , the antenna assembly 100 further includes a first protruding section 13 and a second protruding section 14. The first protruding section 13 is disposed at the first feeding point A1 and is interconnected with the first radiator 21 as a whole. The second protruding section 14 is disposed at the first connection point H1 and is interconnected with the second radiator 22 as a whole. The first protruding section 13 and the second protruding section 14 in this embodiment can refer to the first protruding section 13 and the second protruding section 14 in Embodiment 1.

[0239] The capacitive structure 30 is electrically connected between the first protruding section 13 and the second protruding section 14.

[0240] For the specific structure and function of the capacitive structure 30 provided in this embodiment, reference can be made to the specific structure and function of the capacitive structure 30 in Embodiment 1.

[0241] Please refer to Figure 21 and Figure 23 , the antenna assembly 100 further includes a first inner branch 15. The first inner branch 15 is connected with the first protruding section 13 as an integral structure. One end of the first inner branch 15 far from the first protruding section 13 is electrically connected to the second end of the capacitive structure 30; and / or,

[0242] Please refer to Figure 22 and Figure 23 , the antenna assembly 100 further includes a second inner branch 16. The second inner branch 16 is connected with the second protruding section 14 as an integral structure. One end of the second inner branch 16 far from the second protruding section 14 is electrically connected to the first end of the capacitive structure 30.

[0243] For the specific structure and function of the first inner branch 15 and the second inner branch 16 provided in this embodiment, reference can be made to the specific structure and function of the first inner branch 15 and the second inner branch 16 in the foregoing Embodiment 1.

[0244] Please refer to Figure 24, the antenna assembly 100 further includes a first conductive trace 17. One end of the first conductive trace 17 is electrically connected to the first protruding section 13. The other end of the first conductive trace 17 is electrically connected to the second end of the capacitive structure 30; and / or,

[0245] Please refer to Figure 24 , the antenna assembly 100 further includes a second conductive trace 18. One end of the second conductive trace 18 is electrically connected to the second protruding section 14. The other end of the second conductive trace 18 is electrically connected to the first end of the capacitive structure 30.

[0246] For the specific structures and functions of the first conductive trace 17 and the second conductive trace 18 provided in this embodiment, reference may be made to the specific structures and functions of the first conductive trace 17 and the second conductive trace 18 in the foregoing Embodiment 1.

[0247] Optionally, please refer to Figure 25 , the capacitive structure 30 includes a capacitive element; or, the capacitive structure 30 includes a first capacitor plate 31 and a second capacitor plate 32. The first capacitor plate 31 and the second capacitor plate 32 are disposed opposite to each other, and a coupling capacitor is formed between the first capacitor plate 31 and the second capacitor plate 32. For the specific structure and function of the capacitive structure 30 provided in this embodiment, reference may be made to the specific structure and function of the capacitive structure 30 in Embodiment 1.

[0248] Optionally, the sum of the electrical length between the first feeding point A1 and the first open end E1 and the distance between the second open end E2 and the first connection point H1 is less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band.

[0249] Optionally, the distance between the first feeding point A1 and the first open end E1 is less than 1 / 4 wavelength of the first frequency band.

[0250] Optionally, the length of the first protruding section 13 is 1 - 3 mm. The length of the second protruding section 14 is 1 - 3 mm. The length of the first protruding section 13 is less than the distance between the first radiator 21 and the first floor edge 510 of the reference floor 500. The length of the second protruding section 14 is less than the distance between the first radiator 21 and the first floor edge 510 of the reference floor 500.

[0251] Optionally, please refer to Figure 17 , the antenna assembly 100 further includes a first tuning circuit 81. One end of the first tuning circuit 81 is electrically connected to the first connection point H1, and the other end of the first tuning circuit 81 is grounded. The first tuning circuit 81 is used to tune the equivalent electrical length between the second open end E2 and the first connection point H1.

[0252] For the specific structure and function of the first tuning circuit 81 provided in this embodiment, reference may be made to the specific structure and function of the first tuning circuit 81 in Embodiment 1.

[0253] In this embodiment, the first switch unit 82 as in the first embodiment above may also be provided. The number of the first tuning circuits 81 is multiple. The controller is configured to control the first switch unit 82 to switch different first tuning circuits 81 to be conducted with the first connection point H1, so that the resonance frequency point of the zero-order resonance is located within the first frequency band or different sub-frequency bands in the first frequency band.

[0254] Optionally, please refer to Figures 21 - 22 , the first radiator 21 further includes a first grounding end D1. The first grounding end D1 is located on a side of the first feeding point A1 away from the first opening end E1. The first grounding end D1 is used for grounding.

[0255] The first feed source 51 is further configured to support a resonance mode for supporting the second frequency band formed from the first grounding end D1 to the first opening end E1.

[0256] The first feed source 51 can also provide a radio frequency signal of the second frequency band. The first resonance mode includes but is not limited to the 1 / 4 wavelength mode. Specifically, the equivalent electrical length of the first radiator 21 is close to 1 / 4 wavelength of the second frequency band. The center frequency point of the second frequency band is less than the center frequency point of the first frequency band. Optionally, taking the first frequency band as the Wi-Fi 5G frequency band, the second frequency band includes but is not limited to at least one of the LB frequency band (less than 1 GHz), MHB frequency band (1 - 3 GHz), N78 frequency band, Wi-Fi 2.4G frequency band, GPS frequency band, etc.

[0257] For the antenna assembly 100 provided in this embodiment, by designing that the antenna assembly 100 further includes a second radiation segment 19, and the first radiation segment 11 includes a coupling slot G1, the second radiation segment 19, the first sub-radiation segment 111 and the first feed source 51 can form an antenna for supporting the second frequency band; the first feed source 51, the first radiation segment 11, the capacitive structure 30, and the second radiation segment 19 can form an antenna for supporting the first frequency band. Therefore, the antenna assembly 100 provided in this application can support multiple different frequency bands, and the compatible antenna assembly 100 can support multiple frequency bands and occupies a small space.

[0258] Optionally, please refer to Figures 21 - 22 , the second radiator 22 further includes a second feeding point A2 and a second grounding end D2. The second grounding end D2 is located on a side of the first connection point H1 away from the second opening end E2. The second grounding end D2 is used for grounding.

[0259] The antenna assembly 100 further includes a second feed source 52. The second feed source 52 is electrically connected to the second feed point A2. The second feed source 52 is used to support a resonance mode supporting a third frequency band formed between the second open end E2 and the second ground end D2.

[0260] The second feed source 52 can also provide a radio frequency signal in a third frequency band. The second resonant mode includes but is not limited to a 1 / 4 wavelength mode. Specifically, the equivalent electrical length of the second radiator 22 is close to 1 / 4 wavelength of the third frequency band. The center frequency of the third frequency band is less than the center frequency of the first frequency band. Optionally, the first frequency band is the Wi-Fi 5G frequency band, and the third frequency band includes but is not limited to at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the N78 band, the Wi-Fi 2.4G band, the GPS band, etc.

[0261] The antenna assembly 100 provided in this embodiment is designed to further include a third radiation section 20, and the first radiation section 11 includes a coupling gap G1. The third radiation section 20, the second sub-radiation section 112 and the second feed source 52 can form an antenna supporting a third frequency band; the first feed source 51, the first sub-radiation section 111, the second sub-radiation section 112, and the capacitive structure 30 can form an antenna supporting a third frequency band. Therefore, the antenna assembly 100 provided in this application can support a variety of different frequency bands, and the compatible antenna assembly 100 can support multiple frequency bands and occupy a small space.

[0262] Take the electronic device as a mobile phone and the first frequency band as the Wi-Fi 5G frequency band as an example.

[0263] At present, there are many antennas on electronic devices, and the metal frame 320 is subject to the requirements of appearance. It is difficult to design a fundamental mode antenna for Wi-Fi 5G in the current whole machine environment. Since Wi-Fi 5G is a higher frequency band in the current mobile phone, there are some antennas with lower frequencies distributed around the Wi-Fi 5G antenna, resulting in the generation of Wi-Fi 5G higher-order modes on these antennas with lower frequency bands than Wi-Fi 5G, thus affecting the efficiency of Wi-Fi 5G.

[0264] Based on this, the antenna assembly 100 provided in the present application can effectively reduce the formation of high-order modes by the Wi-Fi 5G antenna on the surrounding antennas, and has high efficiency characteristics. The antenna assembly 100 includes a first radiator 21, a first inner branch 15, a second radiator 22, and a second inner branch 16. The first feed source 51 is electrically connected to the first radiator 21. The first inner branch 15 and the second inner branch 16 are connected to the first capacitor element 33 through the wiring on the PCB mainboard 600.

[0265] See also Figure 11 , Figure 11The first inner stub 15 and the second inner stub 16 are connected by distributed capacitance (capacitor).

[0266] Please refer to Figure 13 , Figure 13 The first radiator 21 and the second radiator 22 have no inner stubs and are directly connected to the first capacitor element 33 through the first conductive trace 17 and the second conductive trace 18 on the PCB main board 600.

[0267] Between the first ground end D1 and the first feeding point A1 is the second radiation section 19. Between the first feeding point A1 and the first open end E1 is the first sub-radiation section 111. Between the second open end E2 and the first connection point H1 is the second sub-radiation section 112. The length of the second radiation section 19 has no specific requirement. The length of the first sub-radiation section 111 is less than λ / 4 of the Wi-Fi 5G frequency band. The sum of the lengths of the first sub-radiation section 111 and the second sub-radiation section 112 is less than or equal to λ / 2 of the Wi-Fi 5G frequency band and greater than λ / 4 of the Wi-Fi 5G frequency band. The length of the second protruding section 14 is determined according to the clearance of the electronic device, and the length of the second protruding section 14 is about 1 - 3 mm.

[0268] Please refer to Figure 17 , when the antenna space on the electronic device is limited, resulting in the length of the second sub-radiation section 112 being insufficient or too long, a first tuning circuit 81 for returning to the ground can also be added at the location of the second radiator 22 to tune the equivalent electrical length of the second sub-radiation section 112 to a suitable length, so that the resonance frequency point of the zero-order resonance is located within the Wi-Fi 5G frequency band.

[0269] Please refer to Figure 26 , the antenna assembly 100 provided in this application is arranged on the first side frame 322 of the electronic device. The antenna assembly 100, as a side antenna of the electronic device, is conducive to better Wi-Fi 5G communication efficiency when the electronic device is in the landscape usage state.

[0270] Please refer to Figure 4 , the antenna assembly 100 provided in this application is arranged on the top frame 321 of the electronic device, that is, the antenna assembly 100, as a top antenna of the electronic device, is conducive to better Wi-Fi 5G communication efficiency when the electronic device is in the portrait usage state.

[0271] Of course, the number of the antenna assemblies 100 can be multiple. One of the antenna assemblies 100 is arranged on the first side frame 322 of the electronic device. Another one of the antenna assemblies 100 is arranged on the top frame 321 of the electronic device.

[0272] Please refer to Figure 27 , Figure 27 This is the current schematic diagram of the zero-order resonance formed by the antenna assembly 100 provided in this application in Wi-Fi 5G.Figure 28 It is a schematic diagram of the current of the antenna operating in Wi-Fi 5G to generate the fundamental mode and higher-order modes. Taking the antenna assembly 100 being disposed on the first side frame 322 as an example. The red lines with arrows represent the current paths of the fundamental mode. The blue lines with arrows represent the current paths of the higher-order modes. It can be seen that circular currents are formed on the first sub-radiating section 111, the first protruding section 13, the first inner branch 15, the capacitive structure 30, the second inner branch 16, the second protruding section 14, and the second sub-radiating section 112, and the current is concentrated in the circular path where the first sub-radiating section 111, the first protruding section 13, the first inner branch 15, the capacitive structure 30, the second inner branch 16, the second protruding section 14, and the second sub-radiating section 112 are located, and there is no or less dispersion to the second radiating section 19 and the third radiating section 20, that is, no higher-order modes are formed on the nearby antenna branches. Please refer to Figure 28 , the fundamental mode of Wi-Fi 5G is formed on the main branch, and the higher-order mode (3 / 4 wavelength mode) of Wi-Fi 5G is formed on the nearby branches.

[0273] Please refer to Figure 29 , Figure 29 It is the efficiency curve of the antenna assembly 100 forming the zero-order resonance and the antenna assembly 100 forming the fundamental mode and higher-order modes provided by the present application.

[0274] Curve a is the radiation efficiency of the antenna assembly 100 forming the zero-order resonance. Curve b is the radiation efficiency of the antenna assembly 100 forming the fundamental mode and higher-order modes. Curve c is the system efficiency curve of the antenna assembly 100 forming the zero-order resonance. d is the system efficiency of the antenna assembly 100 forming the fundamental mode and higher-order modes.

[0275] It can be seen that the efficiency of the antenna assembly 100 forming the zero-order resonance provided by the present application in Wi-Fi 5G is higher than -3.6 dB. The efficiency of the antenna assembly 100 forming the fundamental mode and higher-order modes provided by the present application in Wi-Fi 5G is -4.9 dB. The efficiency of the antenna assembly 100 forming the zero-order resonance provided by the present application in Wi-Fi 5G is higher than the efficiency of the antenna assembly 100 forming the fundamental mode and higher-order modes in Wi-Fi 5G.

[0276] Please refer to Figure 30 , Figure 30 It is the current distribution simulation of the antenna assembly 100 forming the zero-order resonance provided by the present application Figure 1 . Please refer to Figure 31 , Figure 31 It is the current distribution simulation of the antenna assembly 100 forming the zero-order resonance provided by the present application Figure 2 .

[0277] It can be seen that for the antenna assembly 100 that forms a zero-order resonance provided by the present application, the resonant current in Wi-Fi 5G mainly concentrates on the loop, and less current or no current is dispersed to other branches outside the loop, and there are no higher-order modes. For the antenna assembly 100 that forms a fundamental mode and higher-order modes provided by the present application, part of the resonant current in Wi-Fi 5G is distributed on the main radiator, and the other part is distributed on other nearby antennas. The current is relatively dispersed, and the energy may flow through channels such as nearby other antennas and conductive foam to the screen copper foil, resulting in relatively low efficiency, and there are higher-order modes on other antennas, that is, reverse current is formed, which also leads to a decrease in efficiency.

[0278] Please refer to Figure 32 , Figure 32 FIG. is a schematic diagram of the antenna assembly 100 provided by the present application disposed on the top border 321. The antenna assembly 100 includes a first sub-radiating section 111, a second sub-radiating section 112, a first protruding section 13, a second protruding section 14, a second inner branch 16, and a capacitive structure 30.

[0279] Furthermore, the influence of the length of the second sub-radiating section 112 on the resonant frequency point of the zero-order resonance is described. When the capacitance value of the capacitive structure 30 remains unchanged, the change in the resonant position of the zero-order mode when the second sub-radiating section 112 has different lengths (1.5 mm or 3 mm).

[0280] Please refer to Figure 33 , Figure 33 FIG. is the S-parameter curves of the second sub-radiating section 112 in the antenna assembly 100 that forms a zero-order resonance provided by the present application with dimensions of 1.5 mm and 3 mm respectively. The capacitance value of the capacitive structure 30 remains unchanged. Curve a is the S-parameter curve of the second sub-radiating section 112 in the antenna assembly 100 that forms a zero-order resonance provided by the present application with a dimension of 1.5 mm. Curve b is the S-parameter curve of the second sub-radiating section 112 in the antenna assembly 100 that forms a zero-order resonance with a dimension of 3 mm.

[0281] It can be seen that when the length of the second sub-radiating section 112 becomes longer, the resonant point position of the zero-order resonance shifts towards the Wi-Fi 5G band, that is, towards the low-frequency band. Therefore, by setting the appropriate size of the second sub-radiating section 112 or setting the first tuning circuit 81, the resonant point position of the zero-order resonance can be located within the Wi-Fi 5G band.

[0282] Please refer to Figure 34 , Figure 34They are the efficiency curves of the second sub-radiation segment 112 with dimensions of 1.5 mm and 3 mm respectively. Curve a is the radiation efficiency curve of the second sub-radiation segment 112 with a dimension of 1.5 mm in the antenna assembly 100 that forms a zero-order resonance provided by this application. Curve b is the radiation efficiency curve of the second sub-radiation segment 112 with a dimension of 3 mm in the antenna assembly 100 that forms a zero-order resonance. Curve c is the system efficiency curve of the second sub-radiation segment 112 with a dimension of 1.5 mm in the antenna assembly 100 that forms a zero-order resonance provided by this application. Curve d is the system efficiency curve of the second sub-radiation segment 112 with a dimension of 3 mm in the antenna assembly 100 that forms a zero-order resonance.

[0283] The capacitance value of the capacitive structure 30 remains unchanged. It can be seen that when the length of the second sub-radiation segment 112 becomes longer, the resonance point position of the zero-order resonance shifts towards the Wi-Fi 5G band, that is, towards the low-frequency band, and the in-band efficiency of Wi-Fi 5G is increased.

[0284] Please refer to Figure 35 , Figure 35 They are the S-parameter curves of the capacitive structure 30 of the antenna assembly 100 provided by this application with capacitance values of 0.2 pF and 0.3 pF. Curve a is the S-parameter curve of the capacitive structure 30 with a capacitance value of 0.2 pF in the antenna assembly 100 that forms a zero-order resonance provided by this application. Curve b is the S-parameter curve of the capacitive structure 30 with a capacitance value of 0.3 pF in the antenna assembly 100 that forms a zero-order resonance. The second sub-radiation segment 112 remains unchanged at 1.5 mm. It can be seen that by tuning the capacitance value of the capacitive structure 30, the resonance position of the zero-order resonance can also be changed to shift the zero-order resonance towards the Wi-Fi 5G band. As the capacitance value of the tuned capacitive structure 30 decreases, the resonance frequency point of the zero-order resonance shifts towards the high-frequency side. Therefore, by setting a suitable capacitance value of the capacitive structure 30, the resonance point position of the zero-order resonance can be located within the Wi-Fi 5G band.

[0285] Please refer to Figure 36 , Figure 36 They are the efficiency curves of the capacitive structure 30 of the antenna assembly 100 provided by this application with capacitance values of 0.2 pF and 0.3 pF. Curve a is the radiation efficiency curve of the capacitive structure 30 with a capacitance value of 0.2 pF in the antenna assembly 100 that forms a zero-order resonance provided by this application. Curve b is the radiation efficiency curve of the capacitive structure 30 with a capacitance value of 0.3 pF in the antenna assembly 100 that forms a zero-order resonance. Curve c is the system efficiency curve of the capacitive structure 30 with a capacitance value of 0.2 pF in the antenna assembly 100 that forms a zero-order resonance provided by this application. Curve d is the system efficiency curve of the capacitive structure 30 with a capacitance value of 0.3 pF in the antenna assembly 100 that forms a zero-order resonance.

[0286] The second sub-radiating section 112 remains unchanged at 1.5 mm. It can be seen that the capacitance value of the tuning capacitive structure 30 can also change the resonance position of the zero-order resonance, causing the zero-order resonance to shift into the Wi-Fi 5G band. As the capacitance value of the tuning capacitive structure 30 increases, the resonance frequency point of the zero-order resonance shifts towards the low-frequency side. Therefore, by setting an appropriate capacitance value for the capacitive structure 30, the resonance point position of the zero-order resonance can be located within the Wi-Fi 5G band. When the capacitance value is 0.3 pF, the efficiency of the antenna assembly 100 within the Wi-Fi 5G band is greater than -4 dB.

[0287] Please refer to Figure 37 , Figure 37 is the current distribution simulation of the antenna assembly 100 that forms the zero-order resonance and is provided in this application and is disposed on the top border 321 Figure 1 。Please refer to Figure 38 , Figure 38 is the current distribution simulation of the antenna assembly 100 that forms the zero-order resonance and is provided in this application and is disposed on the top border 321 Figure 2 。It can be seen that the resonance current of the antenna assembly 100 that forms the zero-order resonance provided in this application in Wi-Fi 5G is mainly concentrated on the loop, and less current or no current is dispersed to other branches outside the loop, and there is no high-order mode.

[0288] Please refer to Figure 4 , Figure 4 is a schematic diagram of the antenna assembly 100 provided in this application and disposed on the top border 321. The antenna assembly 100 includes a first sub-radiating section 111, a second sub-radiating section 112, a first protruding section 13, a second protruding section 14, a second inner branch 16, and a capacitive structure 30.

[0289] Furthermore, the influence of the length of the first sub-radiating section 111 on the resonance frequency point of the zero-order resonance is described. When the capacitance value of the capacitive structure 30 remains unchanged, the change in the resonance position of the zero-order mode when the first sub-radiating section 111 has different lengths (0.5 mm or 1 mm).

[0290] Please refer to Figure 39 , Figure 39The S-parameter curves of the first sub-radiating section 111 with dimensions of 0.5 mm and 1 mm respectively. The capacitance value of the capacitive structure 30 remains unchanged. It can be seen that while keeping other variables unchanged, tuning the resonance position of the zero-order resonance can also be achieved by only changing the value of the first sub-radiating section 111. When the length of the first sub-radiating section 111 increases, the resonance point position of the zero-order resonance shifts into the Wi-Fi 5G band, that is, shifts towards the low-frequency band. Therefore, by setting the appropriate dimensions of the second sub-radiating section 112 or setting the first tuning circuit 81, the resonance point position of the zero-order resonance can be made to be within the Wi-Fi 5G band. When the first sub-radiating section 111 is 1 mm, the resonance of the zero-order resonance is within the Wi-Fi 5G band, improving the in-band efficiency.

[0291] Please refer to Figure 40 , Figure 40 are the efficiency curves of the first sub-radiating section 111 with dimensions of 0.5 mm and 1 mm respectively. The capacitance value of the capacitive structure 30 remains unchanged. It can be seen that when the length of the first sub-radiating section 111 increases, the resonance point position of the zero-order resonance shifts into the Wi-Fi 5G band, that is, shifts towards the low-frequency band, and raises the in-band efficiency of Wi-Fi 5G.

[0292] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application, and these improvements and refinements are also regarded as within the protection scope of the present application.

Claims

1. An electronic device, characterized in that: include: Reference floor; An antenna assembly, the antenna assembly comprising: A first radiating section, wherein the first radiating section is spaced apart from an edge of the reference floor; the first radiating section comprises a first feeding point and a first connection point spaced apart; a capacitive structure, wherein a first end of the capacitive structure is electrically connected to the first connection point, and a second end of the capacitive structure is electrically connected to the first feeding point; an inductive structure, one end of the inductive structure being electrically connected to the first feeding point, and the other end of the inductive structure being grounded; and A first feed source, one end of which is electrically connected to the first feeding point, and the first feed source is used to excite the first radiation section to form a zero-order resonance supporting a first frequency band.

2. The electronic device according to claim 1, wherein: The equivalent electrical length of the first radiation segment is less than or equal to 1 / 2 wavelength of the first frequency band and greater than 1 / 4 wavelength of the first frequency band.

3. The electronic device according to claim 1, wherein: The first radiating segment includes a first sub-radiating segment and a second sub-radiating segment, the first feeding point is located at an end of the first sub-radiating segment away from the second sub-radiating segment, the first connection point is located at an end of the second sub-radiating segment away from the first sub-radiating segment, and a coupling gap is between the first sub-radiating segment and the second sub-radiating segment.

4. The electronic device according to claim 3, characterized in that: The sum of the equivalent electrical lengths of the first sub-radiation segment and the second sub-radiation segment is less than or equal to 1 / 2 wavelength of the first frequency band, and greater than 1 / 4 wavelength of the first frequency band; the equivalent electrical length of the first sub-radiation segment is less than 1 / 4 wavelength of the first frequency band.

5. The electronic device according to claim 1, wherein: The antenna assembly further comprises at least one electrical connector, wherein the at least one electrical connector comprises a first electrical connector, wherein a first end of the first electrical connector is electrically connected to the first feeding point, and a second end of the first electrical connector is electrically connected to a second end of the capacitive structure; and / or, The antenna assembly further includes at least one electrical connector, wherein the at least one electrical connector includes a second electrical connector, wherein a first end of the second electrical connector is electrically connected to the first connection point, and a second end of the second electrical connector is electrically connected to the first end of the capacitive structure.

6. The electronic device according to claim 5, characterized in that: The electrical connector is located in a gap between the first radiation section and the reference floor, and the electrical connector and the first radiation section are an integral structure.

7. The electronic device according to claim 5, characterized in that: The electrical connector is a conductive trace.

8. The electronic device according to claim 1, wherein: The capacitive structure includes a capacitive element.

9. The electronic device according to claim 1, wherein: The capacitive structure includes a first capacitor plate and a second capacitor plate. The first capacitor plate and the second capacitor plate are arranged opposite to each other, and a coupling capacitor is formed between the first capacitor plate and the second capacitor plate.

10. The electronic device according to claim 1, wherein: The second end of the capacitive structure is electrically connected to the reference ground plane, and the reference ground plane is electrically connected to the first feeding point.

11. The electronic device according to claim 1, wherein: The capacitance of the capacitive structure is 0.1-1 pF.

12. The electronic device according to claim 1, wherein: The antenna assembly also includes a second radiating section, which is an integral structure with the first radiating section, one end of the second radiating section is connected to the first feeding point, the other end of the second radiating section is a first grounding end, the first grounding end is electrically connected to the reference ground, and the second radiating section is the inductive structure.

13. The electronic device according to claim 1, wherein: The inductive structure includes a first inductive element, one end of the first inductive element is electrically connected to the first feeding point, and the other end of the first inductive element is grounded.

14. The electronic device according to claim 1, wherein: The resonant current of the zero-order resonance is distributed on the first radiation section and the capacitive structure; and the resonant current of the zero-order resonance is a circular current.

15. The electronic device according to claim 3, characterized in that: The antenna assembly also includes a first tuning circuit, one end of the first tuning circuit is electrically connected to the first connection point, the other end of the first tuning circuit is grounded, and the first tuning circuit is used to tune the equivalent electrical length of the second sub-radiation segment.

16. The electronic device according to claim 15, characterized in that: There are multiple first tuning circuits, and the antenna assembly also includes a first switch unit, a fixed end of the first switch unit is electrically connected to the first connection point, and multiple selection ends of the first switch unit are respectively electrically connected to one end of multiple first tuning circuits.

17. The electronic device according to claim 1, wherein: There are multiple capacitive structures, and the capacitance value of each capacitive structure is different; the antenna assembly also includes a second switch unit, a fixed end of the second switch unit is electrically connected to the first connection point, multiple selection ends of the second switch unit are respectively electrically connected to one end of the multiple capacitive structures, and the other end of each capacitive structure is electrically connected to the first feeding point.

18. The electronic device according to claim 1, wherein: The antenna assembly also includes multiple second tuning circuits, and the antenna assembly also includes a third switch unit, the fixed end of the third switch unit is electrically connected to the first feeding point, and the multiple selection ends of the third switch unit are respectively electrically connected to one end of the multiple second tuning circuits.

19. The electronic device according to claim 3, characterized in that: The antenna assembly also includes a second radiating section, which is an integral structure with the first sub-radiating section. One end of the second radiating section is connected to the first feeding point, and the other end of the second radiating section is a first grounding end, which is electrically connected to the reference floor. The first feed source is also used to support the first sub-radiating section and the second radiating section to form a resonant mode that supports the second frequency band.

20. The electronic device according to claim 3, characterized in that: The antenna assembly further includes a third radiation segment and a second feed source, the third radiation segment and the second sub-radiation segment are an integrated structure, one end of the third radiation segment is connected to the first connection point, the other end of the third radiation segment is a second grounding end, and the second grounding end is electrically connected to the reference ground; The third radiation segment also includes a second feeding point; the second feed source is electrically connected to the second feeding point, and the second feed source is used to support the second sub-radiation segment and the third radiation segment to form a resonant mode that supports a third frequency band.

21. An electronic device, characterized in that: include: Reference floor; An antenna assembly, the antenna assembly comprising: a first radiator, at least a portion of which is spaced from an edge of the reference floor, the first radiator comprising a first feeding point and a first open end; a second radiator, at least a portion of the second radiator being spaced apart from an edge of the reference floor, the second radiator comprising a second open end and a first connection point, a coupling gap being formed between the first open end and the second open end; a capacitive structure, wherein a first end of the capacitive structure is electrically connected to the first connection point, and a second end of the capacitive structure is electrically connected to the first feeding point; an inductive structure, one end of the inductive structure being electrically connected to the first feeding point, and the other end of the inductive structure being grounded; and A first feed source is electrically connected to the first feed point, and is used to excite a circular current between the first feed point and the first connection point and on the capacitive structure.

22. The electronic device according to claim 21, characterized in that The antenna assembly further comprises a first protruding section and a second protruding section, wherein the first protruding section is disposed at the first feeding point and interconnected with the first radiator as a whole; the second protruding section is disposed at the first connection point and interconnected with the second radiator as a whole; The capacitive structure is electrically connected between the first protruding section and the second protruding section.

23. The electronic device according to claim 22, characterized in that: The antenna assembly further comprises a first inner branch, wherein the first inner branch is connected to the first protruding section as an integral structure, and an end of the first inner branch away from the first protruding section is electrically connected to the second end of the capacitive structure; and / or, The antenna assembly also includes a second inner branch node, which is connected to the second protruding section as an integral structure, and an end of the second inner branch node away from the second protruding section is electrically connected to the first end of the capacitive structure.

24. The electronic device according to claim 22, characterized in that: The antenna assembly further includes a first conductive trace, one end of the first conductive trace is electrically connected to the first protruding section, and the other end of the first conductive trace is electrically connected to the second end of the capacitive structure; and / or, The antenna assembly further includes a second conductive trace, one end of the second conductive trace is electrically connected to the second protruding section, and the other end of the second conductive trace is electrically connected to the first end of the capacitive structure.

25. The electronic device according to claim 21, characterized in that The capacitive structure includes a capacitive element; or, the capacitive structure includes a first capacitive plate and a second capacitive plate, the first capacitive plate and the second capacitive plate are arranged opposite to each other, and a coupling capacitor is formed between the first capacitive plate and the second capacitive plate.

26. The electronic device according to claim 22, characterized in that: The first feed source is used to excite the first feeding point to the first connection point and the capacitive structure to form a zero-order resonance supporting a first frequency band.

27. The electronic device according to claim 26, characterized in that The sum of the equivalent electrical length between the first feeding point and the first open end and the equivalent electrical length between the second open end and the first connection point is less than or equal to 1 / 2 wavelength of the first frequency band, and greater than 1 / 4 wavelength of the first frequency band; and / or, the equivalent electrical length between the first feeding point and the first open end is less than 1 / 4 wavelength of the first frequency band; and / or, the length of the first protruding section is 1 to 3 mm.

28. The electronic device according to claim 21, characterized in that The antenna assembly also includes a first tuning circuit, one end of the first tuning circuit is electrically connected to the first connection point, the other end of the first tuning circuit is grounded, and the first tuning circuit is used to tune the equivalent electrical length from the second open end to the first connection point.

29. The electronic device according to claim 21, characterized in that The first radiator further includes a first grounding end, the first grounding end is located at a side of the first feeding point away from the first opening end, and the first grounding end is used for grounding; The first feed source is further used to support the first ground end to the first open end to form a resonant mode supporting a second frequency band.

30. The electronic device according to claim 22, characterized in that The second radiator further includes a second feeding point and a second grounding end, wherein the second grounding end is located on a side of the first connection point away from the second opening end, and the second grounding end is used for grounding; The antenna assembly also includes a second feed source, which is electrically connected to the second feed point, and the second feed source is used to support a resonant mode supporting a third frequency band formed between the second open end and the second ground end.

31. The electronic device according to claim 21, characterized in that The electronic device also includes a frame, which includes a top frame, a first side frame, a bottom frame and a second side frame connected in sequence, at least a portion of the first radiator is arranged on the top frame, and the second radiator is arranged on the top frame, or the first radiator is arranged on the top frame, and at least a portion of the second radiator is arranged on the top frame, or at least a portion of the first radiator is arranged on the first side frame, and the second radiator is arranged on the first side frame; or the first radiator is arranged on the first side frame, and at least a portion of the second radiator is arranged on the first side frame.

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