Antenna assembly and electronic equipment

Abstract

The utility model provides an antenna assembly and electronic equipment, the electronic equipment comprises a first antenna assembly and a second antenna assembly, the first antenna assembly comprises a first feed source and a first radiator, the second antenna assembly comprises a second feed source and a second radiator, the first radiator is arranged on a first side frame of the electronic equipment, and the second radiator is arranged on a second side frame of the electronic equipment. One end of the first radiator is a first feeding point, the first feed source is electrically connected with the first feeding point, and the first feed source is used for exciting the first radiator to support a first frequency band; the second radiator is arranged on a second side frame of the electronic equipment, the second radiator comprises a second feeding point, the second feed source is electrically connected with the second feeding point, the second feed source is used for exciting the second radiator to support the first frequency band, and when one side frame of the electronic equipment is held by a hand, the antenna assembly on the other side can also support the first frequency band. Therefore, the working efficiency of the first frequency band can be ensured when the electronic equipment is held by a left hand / a right hand, and the working efficiency of the antenna is further improved.

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to an antenna assembly and electronic device. Background Art

[0002] When handheld electronic devices are used for calls and communication, they can affect antenna performance, leading to a decrease in antenna efficiency. Therefore, improving antenna efficiency has become a technical problem that needs to be solved. Utility Model Content

[0003] This application provides an antenna assembly that can improve the working efficiency of an antenna and an electronic device having the antenna assembly.

[0004] In a first aspect, this application provides an electronic device comprising:

[0005] The border includes a first side border and a second side border that are disposed opposite to each other;

[0006] The first antenna assembly includes a first feed source and a first radiator. The first radiator is disposed on the first side frame. One end of the first radiator is a first feed point. The first feed source is electrically connected to the first feed point. The first feed source is used to excite the first radiator to support a first frequency band.

[0007] The second antenna assembly includes a second feed source and a second radiator. The second radiator is disposed on the second side frame and includes a second feed point. The second feed source is electrically connected to the second feed point. The second feed source is used to excite the second radiator to support the first frequency band.

[0008] The electronic device provided in this application designs a first antenna assembly and a second antenna assembly within the electronic device. The first antenna assembly includes a first feed and a first radiator, and the second antenna assembly includes a second feed and a second radiator. The first radiator is disposed on a first side frame of the electronic device, with one end of the first radiator serving as a first feed point. The first feed is electrically connected to the first feed point, and the first feed is used to excite the first radiator to support a first frequency band. The second radiator is disposed on a second side frame of the electronic device, with the second radiator including a second feed point. The second feed is electrically connected to the second feed point, and the second feed is used to excite the second radiator to support the first frequency band. Since the first radiator of the first antenna assembly is disposed on the first side frame, and the second radiator of the second antenna assembly is disposed on the second side frame, when one side frame of the electronic device is held by hand, the antenna assembly on the other side can also support the first frequency band, ensuring that the electronic device can maintain the working efficiency of the first frequency band even when held by the left or right hand, thereby improving the working efficiency of the antenna.

[0009] Secondly, this application provides an antenna assembly, the antenna assembly comprising:

[0010] The radiator includes a main radiator and a parasitic radiator. The main radiator includes a feed point and a first free end. The parasitic radiator includes a second free end and a first grounding end. An equivalent capacitance or an electrical connection capacitor is formed between the first free end and the second free end.

[0011] A feed source, wherein the feed source is electrically connected to the feed point;

[0012] A capacitor element is electrically connected between the feed point and the feed source; the feed source is used to excite the radiator to support a first frequency band.

[0013] The antenna assembly provided in this application includes a radiator and a feed source. The radiator includes a main radiator and a parasitic radiator. The main radiator includes a feed point and a first free end. The parasitic radiator includes a second free end and a first ground end. An equivalent capacitance or an electrically connected capacitor is formed between the first free end and the second free end. The feed source is electrically connected to the feed point. The capacitor is electrically connected between the feed point and the feed source. The feed source is used to excite the radiator to support a first frequency band and improve the efficiency of the first frequency band.

[0014] Thirdly, this application provides an electronic device, which includes the antenna assembly and frame described in the second aspect, the frame including a side frame, and the radiator disposed on the side frame. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0016] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0017] Figure 2 This is a partially exploded view of the electronic device provided in the embodiments of this application;

[0018] Figure 3 This is a partial rear view of the electronic device provided in this application embodiment with the back cover removed;

[0019] Figure 4 The electronic device provided in this application embodiment also includes a selection switching circuit and a controller, as shown in a partial rear view;

[0020] Figure 5 This is a partial rear view of the first antenna assembly, the second antenna assembly, and the main circuit board in the electronic device provided in this application embodiment. Figure 1 ;

[0021] Figure 6 This is a partial back view of the electronic device provided in the embodiments of this application, showing the alignment of the first feed point and the second feed point. Figure 2 ;

[0022] Figure 7 This is a partial back view of the electronic device provided in this application embodiment where the first feed point and the second feed point are misaligned. Figure 2 ;

[0023] Figure 8 This is a schematic diagram of the structure of the first antenna assembly provided in an embodiment of this application;

[0024] Figure 9 This is a partial rear view of a first antenna assembly and a second antenna assembly in an electronic device provided in another embodiment of this application;

[0025] Figure 10 This is a schematic diagram of the structure of the first antenna assembly provided in an embodiment of this application;

[0026] Figure 11 This is a schematic diagram of the structure of the first antenna assembly including a first switching circuit and the second antenna assembly including a second switching circuit provided in the embodiments of this application;

[0027] Figure 12 This is a schematic diagram of the antenna assembly provided in the embodiments of this application, including a radiator, a capacitor element, and a feed source.

[0028] Figure 13 This is a schematic diagram of a right-handed electronic device provided in an embodiment of this application;

[0029] Figure 14 This is the S11 curve of the first switching unit in the first switching circuit of the first antenna assembly provided in this application switching to different first tuning circuits;

[0030] Figure 15 This refers to the radiation efficiency and system efficiency of the first switching unit in the first switching circuit of the first antenna assembly provided in this application embodiment when switching to different first tuning circuits;

[0031] Figure 16 This is a schematic diagram of the current distribution in the first resonant mode provided in the embodiments of this application; it should be noted that the green arrows indicate stronger currents;

[0032] Figure 17 This is a schematic diagram of the current distribution in the second resonant mode provided in the embodiments of this application;

[0033] Figure 18 This is the far-field radiation pattern of the first antenna assembly on the electronic device provided in the embodiments of this application;

[0034] Figure 19 This is the far-field radiation pattern of the second antenna component on the electronic device provided in the embodiments of this application;

[0035] Figure 20 These are the ECC curves of the first antenna assembly and the second antenna assembly provided in the embodiments of this application in the B8 frequency band;

[0036] Figure 21 These are the ECC curves of the first antenna assembly and the second antenna assembly provided in the embodiments of this application in the B5 frequency band;

[0037] Figure 22 These are the ECC curves of the first antenna assembly and the second antenna assembly provided in the embodiments of this application in the B20 frequency band;

[0038] Figure 23 These are the S11 curve, radiation efficiency, and system efficiency curves of the second antenna component provided in this application embodiment under the human head and hand scenario in the B8 band;

[0039] Figure 24 These are the S11 curve, radiation efficiency, and system efficiency curves of the first antenna component provided in this application embodiment under the human head and hand scenario in the B8 band;

[0040] Figure 25 These are the S11 curve, radiation efficiency, and system efficiency curves of the second antenna component provided in this application embodiment under the human head and hand scenario in the B5 band;

[0041] Figure 26 These are the S11 curve, radiation efficiency, and system efficiency curves of the first antenna component provided in this application embodiment under the human head and hand scenario in the B5 band;

[0042] Figure 27 These are the S11 curve, radiation efficiency, and system efficiency curves of the second antenna component provided in this application embodiment under the human head and hand scenario in the B28 band;

[0043] Figure 28 These are the S11 curve, radiation efficiency, and system efficiency curves of the first antenna component provided in this application embodiment under the human head and hand scenario in the B28 band;

[0044] Figure 29 The second antenna component provided in this application has the S11 curve, radiation efficiency, and system efficiency curve in the B8 band under a single-handed scenario.

[0045] Figure 30 The first antenna component provided in this application embodiment has the S11 curve, radiation efficiency, and system efficiency curve in the B8 band under a single-handed scenario.

[0046] Figure 31The second antenna component provided in this application has the S11 curve, radiation efficiency, and system efficiency curve in a single-handed scenario in the B5 band.

[0047] Figure 32 The first antenna component provided in this application embodiment has the S11 curve, radiation efficiency, and system efficiency curve in the B5 band under a single-handed scenario.

[0048] Figure 33 The second antenna component provided in this application has the S11 curve, radiation efficiency, and system efficiency curve in a single-handed scenario in the B28 band.

[0049] Figure 34 The first antenna component provided in this application embodiment has the S11 curve, radiation efficiency, and system efficiency curve in the B28 band under a single-handed scenario.

[0050] Figure 35 These are the S11 curves, radiation efficiency, and system efficiency curves of the first antenna assembly and the second antenna assembly provided in this application embodiment in the B5 band under a two-handed landscape screen scenario;

[0051] Figure 36 These are the S11 curves, radiation efficiency, and system efficiency curves of the first antenna assembly and the second antenna assembly provided in the embodiments of this application in the B8 band under a two-handed landscape screen scenario;

[0052] Figure 37 The S11 curve, radiation efficiency, and system efficiency curves of the first antenna assembly and the second antenna assembly provided in the embodiments of this application are shown in the B28 band in a two-handed landscape screen scenario.

[0053] Explanation of icon numbers:

[0054] Electronic device 1000; display screen 200; middle frame 300; back cover 400; middle plate 310; frame 320; main circuit board 600; battery 700; sub-board 800; top frame 321; bottom frame 324; first side frame 322; second side frame 323; reference ground system 500; antenna assembly 100; first antenna assembly 110; second antenna assembly 120; first feed 21; first radiator 11; first feed point A1; first matching circuit M1; second feed 22; second radiator 12; second feed point A2; second matching circuit M2; selection switching circuit 30; controller 40; first switch 31; second switch 32; first capacitor element C1; First grounding terminal D1; Second capacitor element C2; Second grounding terminal D2; First main radiator 111; First parasitic radiator 112; First free terminal E1; Second free terminal E2; Third capacitor element C3; First switch switching circuit 50; First switch unit 51; First tuning circuit 52; Second main radiator 121; Second parasitic radiator 122; Fourth free terminal E4; Second switch switching circuit 60; Second switch unit 61; Second tuning circuit 62; Radiator 10ˋ; Capacitor element Cˋ; Feed source 20ˋ; Main radiator 11ˋ; Parasitic radiator 12ˋ; Feed point Aˋ; First sub-free terminal E1ˋ; Second sub-free terminal E2ˋ; First sub-grounding terminal D1ˋ. DETAILED DESCRIPTION

[0055] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without creative effort are within the protection scope of this application.

[0056] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0057] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, an assembly or device comprising one or more components is not limited to the one or more components listed, but may optionally also include one or more components not listed but inherent to the exemplified product, or one or more components that it should have based on the described function.

[0058] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of this application. The electronic device 1000 includes, but is not limited to, devices with communication functions such as mobile phones, tablets, laptops, computers, wearable devices, drones, robots, and digital cameras. This embodiment uses a mobile phone as an example for illustration; other electronic devices can refer to this embodiment.

[0059] Please see Figure 2 , Figure 2 This is a partially exploded view of the electronic device 1000 provided in this application embodiment. For example, the electronic device 1000 is a mobile phone. The electronic device 1000 includes a display screen 200, a mid-frame 300, and a back cover 400 arranged sequentially along the thickness direction. The mid-frame 300 includes a mid-plate 310 and a frame 320 surrounding the mid-plate 310. The frame 320 is a conductive frame, such as a metal frame. Receiving spaces are formed between the display screen 200 and the mid-plate 310, and between the mid-plate 310 and the back cover 400, to accommodate the main circuit board 600, camera module, receiver module, battery 700, sub-board 800, and various sensors and other devices. One side of the frame 320 along the thickness direction surrounds the edge of the display screen 200, and the other side of the frame 320 along the thickness direction surrounds the edge of the back cover 400, forming the complete external structure of the electronic device 1000. In this embodiment, the frame 320 and the mid-plate 310 are an integral structure, while the frame 320 and the back cover 400 are separate structures. Electronic devices include multiple antenna assemblies. The operating environment of antenna assembly 100 is exemplified by a mobile phone, but the antenna assembly 100 of this application is not limited to the aforementioned operating environment.

[0060] Please see Figure 3 , Figure 3This is a partial rear view of the electronic device 1000 provided in this application embodiment without the back cover 400. The frame 320 includes a top frame 321 and a bottom frame 324 disposed opposite to each other, and a first side frame 322 and a second side frame 323 connected to the top frame 321 and the bottom frame 324. The first side frame 322 and the second side frame 323 are disposed opposite to each other. The top frame 321 is the side away from the ground when the user holds and uses the electronic device 1000 in portrait mode, and the bottom frame 324 is the side facing the ground when the user holds and uses the electronic device 1000 in portrait mode. The first side frame 322 is the left side when the user holds and uses the electronic device 1000 in portrait mode. The second side frame 323 is the right side when the user holds and uses the electronic device 1000 in portrait mode. Alternatively, the first side frame 322 can also be the right side when the user holds and uses the electronic device 1000, and the second side frame 323 can be the left side when the user holds and uses the electronic device 1000.

[0061] Optionally, the top border 321 is a straight border, and the first side border 322 and the second side border 323 both have straight borders in the middle and curved borders at both ends. The curvature angles of the curved borders at both ends of the first side border 322 are close to or equal to 90°. The curvature angles of the curved borders at both ends of the second side border 323 are also close to or equal to 90°. The curved borders are rounded. The bottom border 324 is a straight border.

[0062] Please see Figure 2 The electronic device 1000 also includes a reference ground system 500. The reference ground system 500 is located within the frame 320. The reference ground system 500 is generally rectangular in shape. Various slots and holes are formed on the reference ground edge of the reference ground system 500 to accommodate components or avoid other structures as needed in the mobile phone. The reference ground system 500 includes, but is not limited to, the metal alloy portion of the middle plate 310 and the reference ground metal portion of the circuit boards (including the main circuit board 600 and the sub-board 800). In general, the reference ground system in the electronic device 1000 can be equivalent to a roughly rectangular shape, hence the name reference ground system 500. However, the reference ground system 500 does not imply that the reference ground is plate-shaped or a rectangular plate.

[0063] The specific structure of the antenna assembly 100 provided in Embodiment 1 will be illustrated below with reference to the accompanying drawings.

[0064] Optional, please refer to Figure 3 There are two antenna components 100, namely the first antenna component 110 and the second antenna component 120.

[0065] Please see Figure 3 The first antenna assembly 110 includes a first feed 21 and a first radiator 11.

[0066] This application does not specifically limit the material of the first radiator 11. Optionally, the first radiator 11 may be made of a conductive material, including but not limited to conductive materials such as metals and alloys. This application does not specifically limit the shape of the first radiator 11. For example, the shape of the first radiator 11 may include, but is not limited to, strip-shaped, sheet-shaped, rod-shaped, coated, or thin-film-shaped. Figure 3 The first radiator 11 shown is merely an example and does not limit the shape of the first radiator 11 provided in this application. In this embodiment, the first radiator 11 is always strip-shaped. This application does not limit the extension trajectory of the first radiator 11. Optionally, the first radiator 11 may extend along a straight line, a curve, or a bend. The first radiator 11 described above may be a line of uniform width on its extension trajectory, or it may be a strip of varying width, such as one with a gradually changing width or a widened region.

[0067] This application does not specifically limit the form of the first radiator 11. Optionally, the form of the first radiator 11 includes, but is not limited to, a metal frame 320, a mechanical design antenna (MDA) embedded in a plastic frame 320, a metal radiator located within or on the surface of the frame 320, a flexible circuit board antenna formed on a flexible printed circuit board (FPC), a laser-directed structured antenna (LDS), a printed direct structured antenna (PDS), a conductive sheet antenna (e.g., a metal bracket antenna), etc. In this embodiment, the first radiator 11 is taken as a metal insert antenna. While ensuring the overall appearance design of the device, the metal insert antenna offers greater freedom in antenna design and is less expensive than the metal frame architecture.

[0068] In this embodiment, please refer to Figure 3 The first radiator 11 is disposed on the first side frame 322. In other words, the first radiator 11 is embedded in the first side frame 322, and the material of the first side frame 322 can be an insulating material.

[0069] The first side bezel 322 is the bezel that the palm and thumb touch when the left hand is holding the device and facing the display screen. The illustration shows the view from the back cover side as an example.

[0070] Please see Figure 3 One end of the first radiator 11 is the first feed point A1.

[0071] This application does not impose specific limitations on the antenna configuration of the first antenna assembly 110. Optionally, the antenna configuration of the first antenna assembly 110 may include, but is not limited to, a left-handed composite antenna, a monopole antenna, etc.

[0072] In this embodiment, the first feed source 21 includes, but is not limited to, radio frequency transceiver chips, radio frequency front-end circuits, etc. The first feed source 21 is located on the main circuit board 600.

[0073] Please see Figure 3 The first feed source 21 is electrically connected to the first feed point A1. The electrical connection described in this application includes a direct electrical connection between two structures, or an indirect electrical connection via other components. In this embodiment, the first feed source 21 and the first feed point A1 are indirectly electrically connected via other electronic components, etc.

[0074] The first feed source 21 is configured to provide a radio frequency excitation signal. The radio frequency signal output port of the first feed source 21 is a power supply port, which is not limited to being electrically connected to the first power supply point A1 on the frame 320 (e.g., a protrusion on the inner side of the frame 320) indirectly by means of soldering, coaxial cable, microstrip line, conductive spring, or conductive screw. In this embodiment, the first feed source 21 is electrically connected to the first power supply point A1 through a power supply spring (conductive spring) provided on the main circuit board 600.

[0075] The first feed source 21 is used to excite the first radiator 11 to support the first frequency band. In other words, the first feed source 21 is configured to provide a radio frequency excitation signal (radio frequency current) for the first frequency band. The first radiator 11 is configured to support the first frequency band. In other words, by designing the length of the first radiator 11 and the impedance matching between the first feed source 21 and the first radiator 11, the first radiator 11 generates a resonant current supporting the first frequency band under the excitation of the first feed source 21.

[0076] Optional, please refer to Figure 3 The first antenna assembly 110 further includes a first matching circuit M1. The first matching circuit M1 is electrically connected between the first feed source 21 and the first feed point A1. The first matching circuit M1 includes at least one of a capacitor and an inductor. The first matching circuit M1 adjusts the impedance matching between the port of the first feed source 21 (the aforementioned feed port) and the port of the first radiator 11, thereby facilitating the excitation of a first resonant mode by the first feed source 21 on the first radiator 11.

[0077] 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 sub-band or all of the following: LB band (less than 1 GHz), MHB band (1-3 GHz), UHB band (greater than 3 GHz), Wi-Fi band, GPS band, etc. In this embodiment, the first frequency band includes a sub-band of the LB band; in other words, the first antenna component 110 is a low-frequency antenna.

[0078] Please see Figure 3 The second antenna assembly 120 includes a second feed 22 and a second radiator 12.

[0079] The material and form of the second radiator 12 in this application are the same as those of the first radiator 11.

[0080] The second radiator 12 is disposed on the second side frame. In other words, the second radiator 12 is embedded in the second side frame, and the material of the second side frame 323 can be an insulating material.

[0081] The second side bezel 323 is the bezel that the middle, ring, and little fingers touch when the left hand is holding the device and facing the display screen 200. The illustration shows the view from the back cover side as an example.

[0082] Please see Figure 3 The second radiator 12 includes a second feed point A2. Optionally, the second feed point A2 may be located at an end of the second radiator 12 or between the two ends of the second radiator 12.

[0083] This application does not specifically limit the antenna configuration of the second antenna assembly 120. Optionally, the antenna configuration of the second antenna assembly 120 may include, but is not limited to, a T-antenna, an IFA antenna, a left-handed composite antenna, a monopole antenna, etc.

[0084] Optionally, the structure of the second antenna assembly 120 may be the same as or different from the structure of the first antenna assembly 110. In this embodiment, the structure of the second antenna assembly 120 is the same as the structure of the first antenna assembly 110.

[0085] In this embodiment, the second feed source 22 includes, but is not limited to, radio frequency transceiver chips, radio frequency front-end circuits, etc. The second feed source 22 is located on the main circuit board 600.

[0086] Please see Figure 3 The second feed source 22 is electrically connected to the second feed point A2. The electrical connection described in this application includes a direct electrical connection between two structures, or an indirect electrical connection via other components. In this embodiment, the second feed source 22 and the second feed point A2 are indirectly electrically connected via other electronic components, etc.

[0087] The second feed source 22 is configured to provide a radio frequency excitation signal. The radio frequency signal output port of the second feed source 22 is a power supply port, which may be electrically connected to the second power supply point A2 on the frame 320 (e.g., a protrusion on the inner side of the frame 320) indirectly by means of soldering, coaxial cable, microstrip line, conductive spring, or conductive screw. In this embodiment, the second feed source 22 is electrically connected to the second power supply point A2 through a power supply spring (conductive spring) provided on the main circuit board 600.

[0088] The second feed source 22 is used to excite the second radiator 12 to support the first frequency band. In other words, the second feed source 22 is configured to provide a radio frequency excitation signal (radio frequency current) for the first frequency band. The second radiator 12 is configured to support the first frequency band. In other words, by designing the length of the second radiator 12 and the impedance matching between the second feed source 22 and the second radiator 12, the second radiator 12 generates a resonant current supporting the first frequency band under the excitation of the second feed source 22.

[0089] Optional, please refer to Figure 3 The second antenna assembly 120 also includes a second matching circuit M2. The second matching circuit M2 is electrically connected between the second feed source 22 and the second feed point A2. The second matching circuit M2 includes at least one of a capacitor and an inductor. The second matching circuit M2 adjusts the impedance matching between the port of the second feed source 22 (the aforementioned feed port) and the port of the second radiator 12, thereby facilitating the second feed source 22 to excite a second resonant mode on the second radiator 12.

[0090] In this embodiment, the first frequency band includes a sub-band of the LB frequency band; in other words, the second antenna component 120 is a low-frequency antenna.

[0091] In this embodiment, the first antenna assembly 110 and the second antenna assembly 120 are respectively disposed on the first side frame 322 and the second side frame 323 of the electronic device 1000. The radiation directions of the first antenna assembly 110 and the second antenna assembly 120 are complementary. When the electronic device 1000 is held with the left hand, the thumb and palm cover the first antenna assembly 110. Even if the first antenna assembly 110 is covered by the hand and its operating efficiency in the first frequency band decreases, the second antenna assembly 120 can still operate in the first frequency band, ensuring antenna efficiency when the electronic device 1000 is held with the left hand. When the electronic device 1000 is held with the right hand, the thumb and palm cover the second antenna assembly 120. Even if the second antenna assembly 120 is covered by the hand and its operating efficiency in the first frequency band decreases, antenna efficiency is still ensured when the electronic device 1000 is held with the right hand. Thus, the electronic device 1000 can maintain good operating efficiency in the first frequency band even when held with the left or right hand. In addition, the first antenna assembly 110 and the second antenna assembly 120 are respectively located on both sides of the electronic device 1000, which can also improve the antenna performance balance when held with the left hand and the right hand.

[0092] The electronic device 1000 provided in this application includes a first antenna assembly 110 and a second antenna assembly 120. The first antenna assembly 110 includes a first feed 21 and a first radiator 11, and the second antenna assembly 120 includes a second feed 22 and a second radiator 12. The first radiator 11 is located on the first side frame 322 of the electronic device 1000 and includes a first feed point A1. The first feed 21 is electrically connected to the first feed point A1 and is used to excite the first radiator 11 to support a first frequency band. The second radiator 12 is located on the second side frame of the electronic device 1000. 323, the second radiator 12 includes a second feed point A2, and a second feed source 22 is electrically connected to the second feed point A2. The second feed source 22 is used to excite the second radiator 12 to support the first frequency band. Since the first radiator 11 of the first antenna assembly 110 is located on the first side frame 322, and the second radiator 12 of the second antenna assembly 120 is located on the second side frame 323, when one side frame of the electronic device 1000 is held by hand, the antenna assembly on the other side can also support the first frequency band, so as to ensure that the electronic device 1000 can ensure the working efficiency of the first frequency band in the left / right hand holding state, thereby improving the working efficiency of the antenna.

[0093] Optional, please refer to Figure 4 The electronic device 1000 also includes a selection switching circuit 30 and a controller 40.

[0094] Selection switching circuit 30 is electrically connected to first antenna assembly 110 and second antenna assembly 120. Selection switching circuit 30 is configured to make first antenna assembly 110 operate in a first frequency band, and / or second antenna assembly 120 operate in a first frequency band.

[0095] Optionally, the selection switching circuit 30 is electrically connected between the first feed point A1 and the first feed source 21, and electrically connected between the second feed source 22 and the second feed point A2. The selection switching circuit 30 is configured to connect the first feed source 21 and the first feed point A1, and / or connect the second feed source 22 and the second feed point A2.

[0096] For details, please refer to Figure 4 The selection switching circuit 30 includes a first switch 31 and a second switch 32. The first switch 31 is electrically connected between the first feed point A1 and the first feed source 21. The second switch 32 is electrically connected between the second feed source 22 and the second feed point A2.

[0097] The controller 40 is electrically connected to the first switch 31 and the second switch 32. The controller 40 compares the signal strength received by the first antenna assembly 110 with a strength threshold. The controller 40 includes, but is not limited to, a control unit located in the radio frequency transceiver chip.

[0098] If the signal strength received by the first antenna assembly 110 is less than the strength threshold, the second switch 32 is turned on, at which point the first switch 31 can be turned on or off. If the first switch 31 is off, the selection switching circuit 30 switches the second antenna assembly 120 to operate in the first frequency band. If the first switch 31 is on, the selection switching circuit 30 switches the first antenna assembly 110 and the second antenna assembly 120 to operate simultaneously in the first frequency band. In this case, the second antenna assembly 120 has relatively higher operating efficiency in the first frequency band, ensuring support for the first frequency band.

[0099] If the signal strength received by the second antenna assembly 120 is less than the strength threshold, the first switch 31 is turned on, at which point the second switch 32 can be turned on or off. If the second switch 32 is off, the selection switching circuit 30 switches the first antenna assembly 110 to operate in the first frequency band. If the second switch 32 is on, the selection switching circuit 30 switches the first antenna assembly 110 and the second antenna assembly 120 to operate simultaneously in the first frequency band. In this case, the first antenna assembly 110 has relatively higher operating efficiency in the first frequency band, ensuring support for the first frequency band.

[0100] This implementation can be used in various handheld scenarios, different head-and-hand scenarios, and two-handed horizontal screen holding scenarios. For example, in a left-handed / left-head-and-handed scenario, the first antenna assembly 110 is held by the hand, resulting in decreased efficiency and reduced signal strength received by the first antenna assembly 110. The controller 40 then controls the selection switching circuit 30 to switch the second antenna assembly 120 to operate in the first frequency band. Similarly, in a right-handed / right-head-and-handed scenario, the second antenna assembly 120 is held by the hand, resulting in decreased efficiency and reduced signal strength received by the second antenna assembly 120. The controller 40 then controls the selection switching circuit 30 to switch the first antenna assembly 110 to operate in the first frequency band.

[0101] The "left head and hand" scenario refers to the situation where the electronic device 1000 is held in the left hand near the head, and the electronic device 1000 may be in the process of making or receiving a phone call. The "right head and hand" scenario refers to the situation where the electronic device 1000 is held in the right hand near the head, and the electronic device 1000 may be in the process of making or receiving a phone call.

[0102] For example, in a two-handed holding scenario, with the USB port facing right and the first side frame 322 located at the bottom, the first antenna assembly 110 may experience reduced reception strength due to hand grip or signal obstruction. The controller 40 then controls the selection switching circuit 30 to switch the second antenna assembly 120 to operate in the first frequency band. Similarly, in a two-handed holding scenario, with the USB port facing left and the second side frame 323 located at the bottom, the second antenna assembly 120 may experience reduced reception strength due to hand grip or signal obstruction. The controller 40 then controls the selection switching circuit 30 to switch the first antenna assembly 110 to operate in the first frequency band.

[0103] Optional, please refer to Figure 5 The electronic device 1000 also includes a main circuit board 600. The main circuit board 600 is disposed between the first side frame 322 and the second side frame 323. The main circuit board 600 is located near the top frame 321.

[0104] Please see Figure 5 The first feed source 21 and the second feed source 22 are disposed on the main circuit board 600. Optionally, the first feed source 21 and the second feed source 22 may be the same RF transceiver chip or two different RF transceiver chips.

[0105] For details, please refer to Figure 5The first power supply point A1 is adjacent to one side of the main circuit board 600. The second power supply point A2 is adjacent to the other side of the main circuit board 600. Specifically, when the first radiator 11 is disposed on the first side frame 322, the location of the first power supply point A1 is adjacent to the side edge of the main circuit board 600 near the first side frame 322. The first power supply point A1 is the portion of the first radiator 11 exposed on the first side frame 322 (conductive bumps, etc.). In other words, the orthographic projection of the first power supply point A1 in the width direction is located on the side edge of the main circuit board 600 near the first side frame 322. The first side frame 322 and the second side frame 323 are arranged along the width direction. Thus, a first power supply spring can be disposed on the main circuit board 600, the first power supply spring extending along the width direction and abutting against the first power supply point A1.

[0106] Specifically, when the second radiator 12 is disposed on the second side frame 323, the location of the second feed point A2 is adjacent to the side edge of the main circuit board 600 near the second side frame 323. The second feed point A2 is the portion of the second radiator 12 exposed on the second side frame 323 (conductive bumps, etc.). In other words, the orthographic projection of the second feed point A2 in the width direction is located on the side edge of the main circuit board 600 near the second side frame 323. Thus, a second feed spring can be disposed on the main circuit board 600, extending in the width direction and abutting against the second feed point A2.

[0107] In this embodiment, the first antenna assembly 110 and the second antenna assembly 120 are respectively disposed on the first side frame 322 and the second side frame 323, and the first feed point A1 of the first radiator 11 and the second feed point A2 of the second radiator 12 are respectively disposed on both sides of the main circuit board 600. In this way, the feed path between the first feed point A1 and the first feed source 21 on the main circuit board 600 is short and the loss is reduced, and the feed path between the second feed point A2 and the second feed source 22 on the main circuit board 600 is short and the loss is reduced.

[0108] Optionally, the top frame 321 is connected between the first side frame 322 and the second side frame 323. The distance between the first feed point A1 and the top frame 321 is equal to the distance between the second feed point A2 and the top frame 321.

[0109] For details, please refer to Figure 6 The first feed point A1 and the second feed point A2 are positioned opposite each other in the width direction. In other words, the first feed point A1 and the second feed point A2 are located on the same horizontal line, with the horizontal direction being the width direction. In this embodiment, by setting the first feed point A1 and the second feed point A2 to be positioned opposite each other in the width direction, it is beneficial to achieve a relatively balanced antenna performance when held with the left hand and when held with the right hand.

[0110] Optionally, the first antenna assembly 110 and the second antenna assembly 120 have the same structure. The first antenna assembly 110 and the second antenna assembly 120 are symmetrically arranged on both sides of the electronic device 1000 so that the positions and environments of the first antenna assembly 110 and the second antenna assembly 120 on the first side frame 322 are similar. When the device is held with the left hand, the performance of the second antenna assembly 120 when it is working in the first frequency band is similar to that of the first antenna assembly 110 when it is held with the right hand. This improves the balance between antenna performance when held with the left hand and antenna performance when held with the right hand, and improves the compatibility of the electronic device 1000 with different holding states.

[0111] Optional, please refer to Figure 5 and Figure 7 The distance between the first power supply point A1 and the top frame 321 is not equal to the distance between the second power supply point A2 and the top frame 321.

[0112] Specifically, the first feed point A1 and the second feed point A2 are not directly opposite each other in the width direction; that is, they are staggered. In other words, the first feed point A1 and the second feed point A2 are not located on the same horizontal line.

[0113] In this embodiment, the first feed point A1 is the end of the first radiator 11, and the second feed point A2 is the end of the second radiator 12. In other words, the first feed point A1 is adjacent to the first gap, and the second feed point A2 is adjacent to the second gap. When the first feed point A1 and the second feed point A2 are staggered in the width direction, the first gap and the second gap are staggered. When the electronic device 1000 is a mobile phone, the electronic device 1000 needs to undergo a three-bar bend test. The staggered arrangement of the first gap and the second gap on the two side frames of the frame of the electronic device 1000 gives the middle frame of the electronic device 1000 better bending and compressive strength, improves the pass rate of the three-bar bend test of the electronic device 1000, and improves the structural strength and stability of the electronic device 1000.

[0114] Further optional information can be found in [link to relevant documentation]. Figure 5 The distance between the first feed point A1 and the top frame 321 is greater than the distance between the second feed point A2 and the top frame 321. That is, the position of the first feed point A1 of the first antenna assembly 110 is lower than the position of the second feed point A2 of the second antenna assembly 120.

[0115] Further optional information can be found in [link to relevant documentation]. Figure 7 The distance between the first feed point A1 and the top frame 321 is less than the distance between the second feed point A2 and the top frame 321. That is, the position of the second feed point A2 of the second antenna assembly 120 is higher than the position of the first feed point A1 of the first antenna assembly 110.

[0116] Optionally, the first feed point A1 and the second feed point A2 are a small distance apart in the width direction.

[0117] Optionally, the difference between the distance between the first power supply point A1 and the top frame 321 and the distance between the second power supply point A2 and the top frame 321 is less than or equal to 2mm.

[0118] Specifically, the difference between the distance between the first power supply point A1 and the top frame 321 and the distance between the second power supply point A2 and the top frame 321 is 2mm, 1.8mm, 1.5mm, 1.2mm, 1mm, 0.8mm, 0.5mm, 0.2mm, 0.1mm, etc., or any distance less than or equal to 2mm.

[0119] If the difference between the distance between the first feed point A1 and the top frame 321 and the distance between the second feed point A2 and the top frame 321 is large, the symmetry between the positions of the first antenna assembly 110 and the second antenna assembly 120 will be relatively poor. The performance of the second antenna assembly 120 operating in the first frequency band when held with the left hand will differ from the performance of the first antenna assembly 110 operating in the first frequency band when held with the right hand. The performance balance between the left-hand and right-hand holding positions will be relatively weak, resulting in relatively poor compatibility of the electronic device 1000 with different holding positions. Therefore, if the difference between the distance between the first feed point A1 and the top frame 321 and the distance between the second feed point A2 and the top frame 321 is large, it may lead to a relatively weak performance balance between the left-hand and right-hand holding positions.

[0120] This embodiment provides that the difference between the distance between the first feed point A1 and the top frame 321 and the distance between the second feed point A2 and the top frame 321 is less than or equal to 2mm. This can improve the pass rate of the three-bar bend test of the electronic device 1000, improve the structural strength and stability of the electronic device 1000, and also ensure the balance of antenna performance when held with the left hand and when held with the right hand, thereby improving the compatibility of the electronic device 1000 with different holding states.

[0121] For details, please refer to Figure 6 The battery 700 of the electronic device 1000 is located between the first side frame 322 and the second side frame 323.

[0122] The main circuit board 600 and the battery 700 are arranged in the direction of extension of the first side frame 322. In other words, the top frame 321, the main circuit board 600 and the battery 700 are arranged sequentially along the length direction, which is the direction in which the first side frame 322 extends.

[0123] Please see Figure 6 A portion of the first radiator 11 is disposed adjacent to one side of the battery 700. A portion of the second radiator 12 is disposed adjacent to another portion of the battery 700.

[0124] Generally, because antenna components need to be connected to the feed and matching circuits, they are usually placed close to the main circuit board 600. However, as the power demand of the battery 700 in the electronic device 1000 increases, the size of the battery 700 becomes larger. The battery 700 occupies a large space within the frame, leaving relatively limited space for the main circuit board 600.

[0125] For example, the battery 700 is 8mm long, while most antennas are smaller than 8mm. Since a feed source, matching circuit, etc., cannot be placed near the portion of the first side frame 322 directly opposite the battery 700, the portion of the battery 700 facing the first side frame 322 cannot be fully utilized, resulting in wasted space on the first side frame 322 facing the battery 700. Similarly, the space on the second side frame 323 facing the battery 700 is wasted.

[0126] In this embodiment, by designing the first antenna assembly 110 as a low-frequency antenna, and by designing the structure of the first radiator 11 of the first antenna assembly 110 (to be further explained later), the first radiator 11 can make better use of the portion of the first side frame 322 facing the battery 700, reducing the wasted space on the first side frame 322 facing the battery 700. Similarly, the second radiator 12 can make better use of the portion of the second side frame 323 facing the battery 700, reducing the wasted space on the second side frame 323 facing the battery 700.

[0127] This embodiment effectively utilizes the space on the first side frame 322 and the second side frame 323 on both sides of the battery 700 by placing a portion of the first radiator 11 that does not need to be connected to the feed source and the matching circuit on the portion of the first side frame 322 facing the battery 700, and placing a portion of the second radiator 12 that does not need to be connected to the feed source and the matching circuit on the portion of the second side frame 323 facing the battery 700. This increases the utilization rate of the electronic device 1000.

[0128] Optional, please refer to Figure 6 The first power supply point A1 is adjacent to the main circuit board 600 near the battery 700. The second power supply point A2 is adjacent to the main circuit board 600 near the battery 700.

[0129] Specifically, the first side of the main circuit board 600 is adjacent to the first side frame 322, and the bottom side of the main circuit board 600 is adjacent to the battery 700. The second side of the main circuit board 600 is adjacent to the second side frame 323.

[0130] When the first radiator 11 is disposed on the first side frame 322 and the second radiator 12 is disposed on the second side frame 323, the first feed point A1 of the first radiator 11 is adjacent to the position of the first side of the main circuit board 600 near the bottom side, and the other part of the first radiator 11 is located on the first side frame 322 part on the side of the battery 700. The second feed point A2 of the second radiator 12 is adjacent to the position of the second side of the main circuit board 600 near the bottom side, and the other part of the second radiator 12 is located on the second side frame 323 part on the side of the battery 700. In this embodiment, the portion of the first radiator 11 that needs to be connected with the first feed 21 and the first matching circuit is located adjacent to the main circuit board 600. The portion of the first radiator 11 that does not need to be connected with the first feed 21 and the first matching circuit is partially located on the first side frame 322 next to the battery 700. While ensuring that the first radiator 11 receives radio frequency signals, the space of the first side frame 322 next to the battery 700 is fully utilized. The first radiator 11 also reserves more space next to the main circuit board 600 for other antennas, which is beneficial for the electronic device 1000 to lay out multiple antenna components and improve the antenna performance of the electronic device 1000. Accordingly, in this embodiment, the portion of the second radiator 12 that needs to be connected with the second feed 22 and the second matching circuit M2 is located adjacent to the main circuit board 600, while the portion of the second radiator 12 that does not need to be connected with the second feed 22 and the second matching circuit M2 is partially located on the second side frame 323 next to the battery 700. While ensuring that the second radiator 12 receives radio frequency signals, the space of the second side frame 323 next to the battery 700 is fully utilized. The second radiator 12 also reserves more space next to the main circuit board 600 for other antennas, which is beneficial for the electronic device 1000 to lay out multiple antenna components and improve the antenna performance of the electronic device 1000.

[0131] In general design, in order to excite a strong resonant current on the radiator, the length of the radiator is usually designed to match 1 / 4 wavelength, 1 / 2 wavelength, etc., of the frequency band to be supported. When the first frequency band is a low-frequency antenna, the length of the low-frequency antenna is relatively long. Thus, even if the length of the low-frequency antenna is designed to match 1 / 4 wavelength of the frequency band to be supported, the length of the low-frequency antenna is still relatively long.

[0132] The embodiments of this application that reduce the length of the first radiator 11 include, but are not limited to, the following examples.

[0133] Optional, please refer to Figure 5The first antenna assembly 110 further includes a first capacitor element C1. The first capacitor element C1 is electrically connected between the first feed point A1 and the first feed source 21.

[0134] Further optional information can be found in [link to relevant documentation]. Figure 5 One end of the first radiator 11 is a first ground terminal D1. The first ground terminal D1 is grounded. The other end of the first radiator 11 is a first feed point A1. In this embodiment, the antenna configuration of the first antenna assembly 110 is referred to as a left-handed antenna configuration.

[0135] Specifically, the first matching circuit M1 includes a first capacitor element C1, wherein the first capacitor element C1 is the device closest to the first feed point A1. In other words, the first antenna assembly 110 can capacitively couple and excite the first radiator 11 to form a left-handed composite mode. The current distribution characteristics of the left-handed composite mode on the first radiator 11 are as follows: the current distribution on the first radiator 11 in the left-handed composite mode is a current distribution in the same direction, and the current intensity on the first radiator 11 is relatively strong and uniformly distributed. In the left-handed composite mode, the length of the first radiator 11 can be less than 1 / 4 wavelength of the first frequency band, thereby reducing the space occupied by the first radiator 11 on the first side frame 322, reserving more space for other antennas or for parasitic branches. In particular, when the first frequency band is a low-frequency band, the first antenna assembly 110 is a left-handed antenna, which can effectively reduce the length of the first radiator 11.

[0136] Optional, please refer to Figure 5 The second antenna assembly 120 further includes a second capacitor element C2. The second capacitor element C2 is electrically connected between the second feed point A2 and the second feed source 22.

[0137] Further optional information can be found in [link to relevant documentation]. Figure 5 One end of the second radiator 12 is the second ground terminal D2. The second ground terminal D2 is grounded. The other end of the second radiator 12 is the second feed point A2. In this embodiment, the antenna configuration of the second antenna assembly 120 is referred to as the left-handed antenna configuration.

[0138] Specifically, the second matching circuit M2 includes a second capacitor element C2, which is the device closest to the second feed point A2. In other words, the second antenna assembly 120 can capacitively couple and excite the second radiator 12 to form a left-handed composite mode. The current distribution characteristics of the left-handed composite mode on the second radiator 12 are as follows: the current distribution on the second radiator 12 in the left-handed composite mode is a current distribution in the same direction, and the current intensity on the second radiator 12 is relatively strong and uniformly distributed. In the left-handed composite mode, the length of the second radiator 12 can be less than 1 / 4 wavelength of the first frequency band, thus reducing the space occupied by the second radiator 12 on the second side frame 323, reserving more space for other antennas or for parasitic stubs. In particular, when the first frequency band is a low-frequency band, the second antenna assembly 120 is in the form of a left-handed antenna, which can effectively reduce the length of the second radiator 12.

[0139] In the first embodiment of this application, the first antenna assembly 110 is a left-handed antenna, meaning it also includes a first capacitor element C1. The first capacitor element C1 is electrically connected between the first feed point A1 and the first feed source 21. In this case, the second antenna assembly 120 may not be a left-handed antenna. In the second embodiment of this application, the second antenna assembly 120 is a left-handed antenna, meaning it also includes a second capacitor element C2. The second capacitor element C2 is electrically connected between the second feed point A2 and the second feed source 22. In this case, the first antenna assembly 110 may not be a left-handed antenna. In the third embodiment of this application, both the second antenna assembly 120 and the third antenna assembly are left-handed antennas.

[0140] Optional, please refer to Figure 5 and Figure 8 The first radiator 11 includes a first main radiator 111 and a first parasitic radiator 112. The first main radiator 111 includes a first feed point A1 and a first free end E1. The first parasitic radiator 112 includes a second free end E2 and a first grounding end D1. The first free end E1 and the second free end E2 are spaced apart. In other words, the first radiator 11 includes two conductive segments that are not directly connected and have a small gap. The conductive segment directly connected to the first feed source 21 is the first main radiator 111, and the conductive segment not directly connected to the first feed source 21 is the first parasitic radiator 112. The first parasitic radiator 112 is coupled to the first main radiator 111 by providing a capacitor element or forming a coupling capacitor, so that the first feed source 21 excites the first main radiator 111 and the first parasitic radiator 112.

[0141] The free end referred to in this application is the end that is disconnected from other conductive parts on the frame 320 by an insulating gap and from the reference ground system 500.

[0142] The grounding terminal described in this application is electrically connected to the reference ground system 500. The electrical connection method includes, but is not limited to, the grounding terminal returning to ground through a grounding spring; or, the grounding terminal and the reference ground system 500 are interconnected as one unit, that is, through a physical return to ground method.

[0143] This embodiment designs the first radiator 11 to include a first main radiator 111 and a first parasitic radiator 112, which allows the first feed source 21 to excite more resonant modes on the first main radiator 111 and the first parasitic radiator 112, thereby supporting more frequency bands or increasing the bandwidth of the supported frequency bands.

[0144] Alternatively, please refer to Figure 9 The first radiator 11 can also be a continuous radiator without gaps. In this embodiment, the size of the first radiator 11 can be less than 1 / 4 wavelength of the first frequency band, which is beneficial to reducing the size of the first radiator 11.

[0145] For another alternative implementation, please refer to Figure 8 The distance d between the first free end E1 and the second free end E2 is less than or equal to a preset distance. An equivalent coupling capacitance is formed between the first free end E1 and the second free end E2. In other words, there is a coupling gap between the first free end E1 and the second free end E2, and the first main radiator 111 and the first parasitic radiator 112 are coupled through the coupling gap.

[0146] The coupling gap is an insulating break. The first main radiator 111 and the first parasitic radiator 112 can achieve capacitive coupling through the coupling gap. In one perspective, the first main radiator 111 and the first parasitic radiator 112 can be regarded as two parts formed by the coupling gap separating the first radiator 11. Here, "capacitive coupling" means that the coupling gap between the first main radiator 111 and the first parasitic radiator 112 generates an electric field, and the signal of the first main radiator 111 can be transmitted to the first parasitic radiator 112 through the electric field, so that the first main radiator 111 and the first parasitic radiator 112 can achieve electrical signal conduction even when they are not directly electrically connected.

[0147] This embodiment does not specify a particular preset distance. For example, the preset distance may include, but is not limited to, 0.8 to 2 mm.

[0148] It should be noted that when the preset distance is relatively large, the coupling capacitance of the coupling gap is small, and the equivalent capacitance value is small. If a processing error (e.g., 0.05mm) occurs during the processing of the coupling gap, the small equivalent capacitance value will significantly affect the actual capacitance value, causing a large difference between the actual and theoretically required capacitance value, resulting in a significant frequency shift. Conversely, if the coupling gap is small, higher precision is required in the mold and manufacturing process, leading to higher processing costs.

[0149] Optionally, the distance d between the first free end E1 and the second free end E2 is 0.5 mm. In this embodiment, setting the distance d between the first free end E1 and the second free end E2 to 0.5 mm allows for a relatively large capacitance value between the first main radiator 111 and the first parasitic radiator 112, reducing the impact of processing errors during the fabrication of the coupling gap on the capacitance value of the equivalent capacitor and thus reducing frequency shift. Simultaneously, the distance d between the first free end E1 and the second free end E2 is not too small, preventing excessively high processing costs.

[0150] In one alternative implementation, please refer to Figure 10 A capacitor element is provided between the first parasitic radiator 112 and the first main radiator 111, so that the first parasitic radiator 112 and the first main radiator 111 form a whole and are excited by the first feed source 21.

[0151] For details, please refer to Figure 10 The first antenna assembly 110 further includes a third capacitor element C3. One end of the third capacitor element C3 is electrically connected to the first free end E1, and the other end of the third capacitor element C3 is electrically connected to the second free end E2.

[0152] More specifically, the first antenna assembly 110 also includes a first circuit board, and a third capacitor element C3 is disposed on the first circuit board. The third capacitor element C3 is a lumped element. The first circuit board includes, but is not limited to, a PCB circuit board, a flexible circuit board, etc. In this embodiment, the first circuit board is a flexible circuit board. Flexible circuit boards occupy little space, can be bent, and have low requirements for the storage space.

[0153] The electrical connection between one end of the third capacitor element C3 and the first free end E1 includes, but is not limited to, a conductive spring or a conductive trace. The electrical connection between the other end of the third capacitor element C3 and the second free end E2 includes, but is not limited to, a conductive spring or a conductive trace.

[0154] Specifically, the length of the first main radiator 111 is greater than the length of the first parasitic radiator 112.

[0155] Optionally, the first feed source 21 excites the first main radiator 111 and the first parasitic radiator 112 (the first radiator 11) to generate a first resonant mode supporting the first frequency band and a second resonant mode supporting the second frequency band.

[0156] Specifically, the current direction in the first resonant mode on the first main radiator 111 is the same as the current direction on the first parasitic radiator 112. For example, the current in the first resonant mode on the first main radiator 111 and the first parasitic radiator 112 flows from the first feed point A1 to the first ground terminal D1. The current mode of the first resonant mode can also be referred to as the longitudinal mode of the entire arm of the first radiator 11. The ground current in the first resonant mode is relatively small, and the main current is distributed on the first main radiator 111. Due to the periodicity of the radio frequency current, at other times, the current in the first resonant mode on the first main radiator 111 and the first parasitic radiator 112 flows from the first ground terminal D1 to the first feed point A1.

[0157] Specifically, in the second resonant mode, the current direction in the first main radiator 111 is opposite to the current direction in the first parasitic radiator 112.

[0158] For example, in the second resonant mode, the current in the first main radiator 111 and the first parasitic radiator 112 flows from the first feed point A1 to the first free end E1 and from the second free end E2 to the first ground end D1. The current mode of the second resonant mode can also be referred to as the half-wavelength mode of the entire arm of the first radiator 11. Due to the periodicity of the radio frequency current, at other times, the current in the second resonant mode in the first main radiator 111 and the first parasitic radiator 112 flows from the first free end E1 to the first feed point A1 and from the first ground end D1 to the second free end E2.

[0159] Optionally, the length of the first main radiator 111 is approximately half the wavelength of the first frequency band, and the length of the first parasitic radiator 112 is approximately one-quarter the wavelength of the second frequency band, to excite the formation of the aforementioned first resonant mode and second resonant mode on the first main radiator 111 and the first parasitic radiator 112. The center frequency of the second frequency band is greater than the center frequency of the first frequency band. The difference between the center frequency of the second frequency band and the center frequency of the first frequency band is 0.1–0.2 GHz.

[0160] For example, the center frequency of the first band is 0.93 GHz, and the center frequency of the second band is 1.07 GHz.

[0161] In this application, the second frequency band and the first frequency band can increase the operating bandwidth of the first antenna assembly 110 in the low-frequency band. Generally, the first antenna assembly 110 may experience frequency offset when held handheld. This embodiment designs the first antenna assembly 110 to have a large operating bandwidth in the low-frequency band, so that even when frequency offset occurs while holding the device handheld, the first antenna assembly 110 can still maintain good operating efficiency in the low-frequency band. Of course, applying the first and second frequency bands to the mid-high frequency band or the ultra-high frequency band can also increase its operating bandwidth.

[0162] Generally, low-frequency antennas support low-frequency sub-bands through a single resonant mode. However, this application designs the first radiator 11 as a first main radiator 111 and a first parasitic radiator 112 coupled together to form two resonant modes, thereby increasing the bandwidth covering low frequencies, reducing frequency offset issues in scenarios such as single-handed, double-handed, and head-and-hand scenarios, and improving the antenna performance of the antenna assembly.

[0163] In this embodiment, please refer to Figure 11 The first antenna assembly 110 further includes a first switching circuit 50. The first switching circuit 50 includes a first switching unit 51 and a plurality of first tuning circuits 52 electrically connected to one end of the first switching unit 51. The other end of the first switching unit 51 is electrically connected to the first feed point A1. The plurality of first tuning circuits 52 are used to tune the magnitude of the first frequency band. One end of each of the plurality of first tuning circuits 52 is electrically connected to one end of the first switching unit 51, and the other end of the first tuning circuit 52 is grounded. That is, the first switching unit 51 includes, but is not limited to, transistors, field-effect transistors, etc.

[0164] Each of the first tuning circuits 52 has a different impedance value. For example, the multiple first tuning circuits 52 may be multiple capacitors with different capacitance values; or, the multiple first tuning circuits 52 may be multiple inductors with different inductance values; or, the multiple first tuning circuits 52 may include multiple capacitors with different capacitance values ​​and multiple inductors with different inductance values. By adjusting the first switching unit 51 electrically connected to the first tuning circuits 52 with different impedances, the overall equivalent electrical length of the connection between the first radiator 11 and the first tuning circuit 52 is adjusted, thereby tuning the size of the first frequency band, such as switching a sub-band of a low-frequency band. For example, the first switching circuit 50 is used to switch the first antenna assembly 110 to cover low-frequency bands such as LTE B8 / B5 / B20 / B28.

[0165] The above describes the structure, operating frequency band, current mode, etc. of the first antenna component 110. In this embodiment, the structure of the first antenna component 110 is the same as that of the second antenna component 120.

[0166] Please see Figure 11 The second radiator 12 includes a second main radiator 121 and a second parasitic radiator 122. The two ends of the second main radiator 121 are the second feed point A2 and the third free end E3, respectively. The two ends of the second parasitic radiator 122 are the fourth free end E4 and the second ground end D2, respectively. A second coupling gap or a fourth capacitor element is located between the second main radiator 121 and the second parasitic radiator 122.

[0167] Please see Figure 11 The second antenna assembly 120 includes a second switching circuit 60. The second switching circuit 60 includes a second switching unit 61 and a plurality of second tuning circuits 62 electrically connected to one end of the second switching unit 61. The other end of the second switching unit 61 is electrically connected to the second feed point A2. The plurality of second tuning circuits 62 are used to tune the magnitude of the second frequency band. One end of each of the plurality of second tuning circuits 62 is electrically connected to one end of the second switching unit 61, and the other end of the second tuning circuit 62 is grounded. The second switching circuit 60 is used to switch the second antenna assembly 120 to cover low-frequency bands such as LTE B8 / B5 / B20 / B28.

[0168] The multiple second tuning circuits 62 may be the same as or different from the multiple first tuning circuits 52. When the first antenna assembly 110 and the second antenna assembly 120 operate simultaneously, the first tuning circuit 52 activated by the first switching unit 51 and the second tuning circuit 62 activated by the second switching unit 61 may be the same as or different. In other words, the first antenna assembly 110 and the second antenna assembly 120 may support different sub-frequency bands.

[0169] Optionally, the first frequency band covers at least one sub-band in the LB frequency band. Optionally, the first frequency band may cover one sub-band, multiple sub-bands, or all of the low-frequency bands. In this way, the first antenna assembly 110 and the second antenna assembly 120 form a low-frequency antenna, achieving performance balance in scenarios where the low-frequency antenna is held with the left hand or right hand, in scenarios where the low-frequency antenna is held with the left head or right head, and in landscape orientation with the USB facing left and landscape orientation with the USB facing right.

[0170] Please see Figure 12 This application also provides an antenna assembly 100. The antenna assembly 100 includes a radiator 10ˋ, a capacitor element Cˋ, and a feed 20ˋ.

[0171] In this embodiment, the material and form of the radiator 10ˋ can be referenced from the material and form of the first radiator 10ˋ.

[0172] Please see Figure 12The radiator 10' includes a main radiator 11' and a parasitic radiator 12'. The main radiator 11' includes a feed point A' and a first sub-free terminal E1'. The parasitic radiator 12' includes a second sub-free terminal E2' and a first sub-ground terminal D1'. An equivalent capacitance or an electrical connection capacitor is formed between the first sub-free terminal E1' and the second sub-free terminal E2'.

[0173] In this embodiment, the main radiator 11ˋ can refer to the aforementioned first main radiator 111, and the parasitic radiator 12ˋ can refer to the aforementioned first parasitic radiator 112.

[0174] Capacitor element C' is electrically connected between feed point A' and feed source 20'. In this embodiment, capacitor element C' can refer to the first capacitor element C1 in the aforementioned embodiment.

[0175] The feed source 20' is electrically connected to the feed point A'. The feed source 20' is used to excite the radiator 10' to support the first frequency band. The feed point A' in this embodiment can refer to the first feed point A1 in the aforementioned embodiment. The feed source 20' in this embodiment can refer to the first feed source 21 in the aforementioned embodiment.

[0176] In other words, the structure of the antenna assembly 100 provided in this embodiment can be the same as the structure of the first antenna assembly 110 described above.

[0177] Optionally, the number of antenna components 100 in the electronic device 1000 is one, namely the first antenna component 110. The frame includes a side frame. The radiator 10' is disposed on the side frame. The first antenna component 110 is disposed on the first side frame 322 or the second side frame 323 of the electronic device 1000.

[0178] Optionally, the length of the main radiator 11' is greater than the length of the parasitic radiator 12'. The length of the main radiator 11' provided in this embodiment can be referenced to the length of the aforementioned first main radiator 111. The length of the parasitic radiator 12' provided in this embodiment can be referenced to the length of the aforementioned first parasitic radiator 112.

[0179] The feed source 20' excites the radiator 10' to form a first resonant mode supporting the first frequency band and a second resonant mode supporting the second frequency band. The current direction of the first resonant mode on the main radiator 11' is the same as the current direction on the parasitic radiator 12'. The current direction of the second resonant mode on the main radiator 11' is opposite to the current direction on the parasitic radiator 12'.

[0180] The first resonance mode provided in this embodiment can be referred to as the aforementioned first resonance mode. The second resonance mode provided in this embodiment can be referred to as the aforementioned second resonance mode.

[0181] The antenna assembly 100 provided in this application includes a radiator 10' and a feed 20'. The radiator 10' includes a main radiator 11' and a parasitic radiator 12'. The main radiator 11' includes a feed point A' and a first sub-free terminal E1'. The parasitic radiator 12' includes a second sub-free terminal E2' and a ground terminal. An equivalent capacitance or an electrical connection capacitor is formed between the first sub-free terminal E1' and the second sub-free terminal E2'. The feed 20' is electrically... Connect the feed point Aˋ; the capacitor element Cˋ is electrically connected between the feed point Aˋ and the feed source 20ˋ; the feed source 20ˋ is used to excite the radiator 10ˋ to support the first frequency band, wherein the main radiator 11ˋ and the parasitic radiator 12ˋ can generate a first resonant mode supporting the first frequency band and a second resonant mode supporting the second frequency band, increasing the operating bandwidth of the antenna assembly 100, reducing frequency offset problems in scenarios such as one-handed, two-handed, and head-and-hand scenarios, and improving the efficiency of the first frequency band.

[0182] An equivalent capacitance is formed between the first free terminal E1' and the second free terminal E2'. The distance between the first free terminal E1' and the second free terminal E2' is 0.5mm.

[0183] In this embodiment, the distance between the first sub-free end E1ˋ and the second sub-free end E2ˋ is set to 0.5mm. This allows the equivalent capacitance value between the main radiator 11ˋ and the parasitic radiator 12ˋ to be relatively large, reducing the impact of processing errors during the fabrication of the coupling gap on the equivalent capacitance value and thus reducing frequency shift. At the same time, the distance between the first sub-free end E1ˋ and the second sub-free end E2ˋ is not too small, so as not to increase the processing cost.

[0184] The antenna assembly 100 further includes a switching circuit. The switching circuit includes a switching unit and a plurality of tuning circuits electrically connected to one end of the switching unit. The other end of the switching unit is electrically connected to the feed point A'. The plurality of tuning circuits are used to tune the magnitude of the first frequency band.

[0185] The switch switching circuit provided in this embodiment can refer to the aforementioned first switch switching circuit 50.

[0186] This application designs an antenna scheme with high free-space efficiency, symmetrical radiation pattern, and small head-and-hand drop. This antenna scheme can be a low-frequency antenna, and further, it can be applied to 4G or 5G low frequencies. The first antenna component 110 (first low-frequency antenna) is arranged in the right waist region of the electronic device 1000. At the same time, the second antenna component 120 (second low-frequency antenna) is mirrored in the left waist region of the electronic device 1000, which can simultaneously ensure high free-space efficiency, symmetrical radiation pattern, and small head-and-hand and hand-and-hand drop. In order to further reduce costs, the low-frequency RF trace of the second antenna component 120 is routed through the surface trace of the main circuit board 600, which can save one RF transmission line.

[0187] Please see Figure 11 The following example uses both the first antenna assembly 110 and the second antenna assembly 120 as low-frequency antennas. The first antenna assembly 110 and the second antenna assembly 120 form a dual low-frequency antenna system. The first antenna assembly 110 can be used as the main low-frequency antenna, and the second low-frequency antenna can be used as the other LB antenna in the two switchable low-frequency antennas.

[0188] In this embodiment, the second antenna assembly 120 has the same structure as the first antenna assembly 110 and is distributed approximately symmetrically on both sides of the electronic device 1000. The first antenna assembly 110 will be used as an example for explanation.

[0189] The first antenna assembly 110 consists of a first main radiator 111 and a first parasitic radiator 112. The first main radiator 111 is a left-handed antenna. The first main radiator 111 and the first parasitic radiator 112 are capacitively coupled. The capacitive coupling can also be formed using a structure similar to a parallel plate capacitor, or by adding a small plate and using a spring contact and a capacitor element Cˋ (see [reference]). Figure 12 The coupling capacitance is controlled. To reduce implementation difficulty, this application adopts a method similar to a parallel-plate capacitor, precisely controlling the third capacitor element C3 required for coupling by adjusting the gap width between the first main radiator 111 and the first parasitic radiator 112, as well as the coupling area of ​​the gaps on both sides (see [link to relevant documentation]). Figure 8 and Figure 10 The size of ).

[0190] Please see Figure 13 This application does not specifically limit the position of the coupling gap of the first radiator 11 on the first side frame 322. Optionally, when the electronic device 1000 is held in the right hand, the coupling gap 11a of the first radiator 11 is located in the area of ​​the ring finger or above the ring finger (for example, 2 mm above the ring finger) to avoid the coupling gap of the first radiator 11 being blocked by the hand and to avoid frequency offset.

[0191] Please see Figure 14 , Figure 14This refers to the S11 curve of the first switching unit 51 in the first switching circuit 50 of the first antenna assembly 110 provided in this application embodiment switching to different first tuning circuits 52.

[0192] As can be seen from the S11 curve, the first antenna component 110 forms a dual-wave resonance before 1.5 GHz. The lower resonance point is the resonance point of the aforementioned first resonance mode, which supports the first frequency band. The higher resonance point is the resonance point of the aforementioned second resonance mode, which supports the second frequency band.

[0193] The first switching circuit 50 also includes a 0.5pF grounding capacitor connected in parallel with multiple tuning circuits. Curve a is the S11 curve when the first switching unit 51 switches to conduct to the 1pF grounding capacitor. Under this switching condition, the B5 frequency band can be supported.

[0194] Curve b is the S11 curve when the first switching unit 51 is disconnected from all tuning circuits. Under this switching condition, the B8 frequency band can be supported. Curve c is the S11 curve when two paths of the first switching unit 51 are conducting, with both paths electrically connected to a 1pF grounding capacitor. Under this switching condition, the B20 frequency band can be supported. Curve d is the S11 curve when all tuning circuit paths of the first switching unit 51 are conducting. Under this switching condition, the B28 frequency band can be supported. The tuning circuit includes a first grounded 1pF parallel capacitor, a second grounded 1pF parallel capacitor, a grounded 4.7pF parallel capacitor, and a 3.9pF series capacitor electrically connected to the first feed source 21.

[0195] Please see Figure 15 , Figure 15 This refers to the radiation efficiency and system efficiency of the first switching unit 51 in the first switching circuit 50 of the first antenna assembly 110 provided in this application embodiment when switching to different first tuning circuits 52. Curve a1 is... Figure 14 Curve a corresponds to the radiation efficiency. Curve a2 is... Figure 14 Curve b in the figure corresponds to the radiation efficiency. Curve a3 is... Figure 14 Curve c in the figure corresponds to the radiation efficiency. Curve a4 is... Figure 14 The curve d in the figure corresponds to the radiation efficiency.

[0196] Curve b1 is Figure 14 Curve a in the diagram corresponds to the system efficiency. Curve b2 is... Figure 14 Curve b in the figure corresponds to the system efficiency. Curve b3 is... Figure 14 Curve c in the diagram corresponds to the system efficiency. Curve b4 is... Figure 14 The system efficiency corresponding to curve d in the figure.

[0197] As can be seen from the system efficiency, the first switching unit 51 in the first switching circuit 50 of the first antenna component 110 has good efficiency when switching to support the B5 band, B8 band, B20 band and B28 band, for example, greater than -5dB.

[0198] Please see Figure 16 , Figure 16 This is a schematic diagram of the current distribution in the first resonant mode. It should be noted that green arrows indicate stronger currents. The direction of most arrows indicates the overall current direction. It can be seen that the first resonant mode is a radial mode for the entire arm, while the current mode is a longitudinal mode for the entire arm. The current is relatively strong throughout the entire arm, while the current at the ground plane is relatively small.

[0199] Please see Figure 17 , Figure 17 This is a schematic diagram of the current distribution in the second resonant mode. The second resonant mode is the half-wavelength mode of the entire arm, with a current reversal point in the middle.

[0200] Please refer to Table 1, which compares the free-space efficiency of the first antenna assembly 110 with that of a conventional antenna. The results show that the B8 / B5 / B20 / B28 efficiencies of the first antenna assembly 110 are approximately 2.6 dB to 4.5 dB higher than those of the conventional antenna.

[0201] Table 1

[0202] frequency band Conventional low-frequency antenna First antenna assembly B5 -9.1 -5 B8 -8.7 -4.2 B20 -8 -5.7 B28 -9.7 -6.3

[0203] Please see Figure 18 , Figure 18 This is the far-field radiation pattern of the first antenna assembly 110 on the electronic device 1000. Taking B8 as an example, the far-field radiation pattern of the first antenna assembly 110 in the B8 frequency band points to the right, that is, the first side frame 322 is on the side where the electronic device 1000 is located. The radiation patterns of other low-frequency bands B5 / B20 / B28 are similar to the B8 radiation pattern, also pointing to the right.

[0204] Please see Figure 19 , Figure 19 This is the far-field radiation pattern of the second antenna component 120 on the electronic device 1000. Taking B8 as an example, the far-field radiation pattern of the second antenna component 120 in the B8 frequency band points to the left, that is, the second side frame 323 is on the side where the electronic device 1000 is located. The radiation patterns of other low-frequency components B5 / B20 / B28 are similar to those of B8, also pointing to the left.

[0205] It can be seen that the radiation patterns of the second antenna component 120 and the first antenna component 110 are complementary.

[0206] Please see Figure 20 , Figure 20These are the ECC curves of the first antenna assembly 110 and the second antenna assembly 120 in the B8 frequency band. The ECC between the first antenna assembly 110 and the second antenna assembly 120 is less than 0.5. This indicates that the first antenna assembly 110 and the second antenna assembly 120 have strong independence, high isolation, and little mutual interference.

[0207] Please see Figure 21 , Figure 21 These are the ECC curves of the first antenna assembly 110 and the second antenna assembly 120 in the B5 frequency band. The ECC between the first antenna assembly 110 and the second antenna assembly 120 is less than 0.5. This indicates that the first antenna assembly 110 and the second antenna assembly 120 have strong independence, high isolation, and little mutual interference.

[0208] Please see Figure 22 , Figure 22 These are the ECC curves of the first antenna assembly 110 and the second antenna assembly 120 in the B20 frequency band. The ECC between the first antenna assembly 110 and the second antenna assembly 120 is less than 0.5. This indicates that the first antenna assembly 110 and the second antenna assembly 120 have strong independence, high isolation, and little mutual interference.

[0209] Please see Figure 23 , Figure 23 These are the S11 curves, radiation efficiency, and system efficiency curves of the second antenna module 120 in the B8 band under the "head and hand" scenario. Curve a1 is the S11 curve under the left head and hand scenario. Curve a2 is the S11 curve under the right head and hand scenario. Curve a3 is the S11 curve in free space. Curve b1 is the radiation efficiency curve under the left head and hand scenario. Curve b2 is the radiation efficiency curve under the right head and hand scenario. Curve b3 is the radiation efficiency curve in free space. Curve c1 is the system efficiency curve under the left head and hand scenario. Curve c2 is the system efficiency curve under the right head and hand scenario. Curve c3 is the system efficiency curve in free space.

[0210] In this context, "left head and hand" refers to a scenario where the left hand holds the electronic device 1000 near the head. "Right head and hand" refers to a scenario where the right hand holds the electronic device 1000 near the head. "Free space" refers to a scenario where the electronic device 1000 is not held by any hand.

[0211] Please see Figure 24 , Figure 24These are the S11 curves, radiation efficiency, and system efficiency curves of the first antenna component 110 in the B8 band under the human head and hand scenario. Curve a1 is the S11 curve under the left head and hand scenario. Curve a2 is the S11 curve under the right head and hand scenario. Curve a3 is the S11 curve in free space. Curve b1 is the radiation efficiency curve under the left head and hand scenario. Curve b2 is the radiation efficiency curve under the right head and hand scenario. Curve b3 is the radiation efficiency curve in free space. Curve c1 is the system efficiency curve under the left head and hand scenario. Curve c2 is the system efficiency curve under the right head and hand scenario. Curve c3 is the system efficiency curve in free space.

[0212] In this context, "left head and hand" refers to a scenario where the left hand holds the electronic device 1000 near the head. "Right head and hand" refers to a scenario where the right hand holds the electronic device 1000 near the head. "Free space" refers to a scenario where the electronic device 1000 is not held by any hand.

[0213] It can be seen that in the human head and hand usage scenario, in the B8 band, the performance of the first antenna component 110 and the second antenna component 120 is complementary, which can ensure that there is one antenna component 100 with the best performance in each usage scenario. By switching antennas, depending on the usage scenario, it can be switched to the antenna component 100 with the best performance.

[0214] Please see Figure 25 , Figure 25 These are the S11 curves, radiation efficiency, and system efficiency curves of the second antenna module 120 in the B5 band under the "head and hand" scenario. Curve a1 is the S11 curve under the left head and hand scenario. Curve a2 is the S11 curve under the right head and hand scenario. Curve a3 is the S11 curve in free space. Curve b1 is the radiation efficiency curve under the left head and hand scenario. Curve b2 is the radiation efficiency curve under the right head and hand scenario. Curve b3 is the radiation efficiency curve in free space. Curve c1 is the system efficiency curve under the left head and hand scenario. Curve c2 is the system efficiency curve under the right head and hand scenario. Curve c3 is the system efficiency curve in free space.

[0215] In this context, "left head and hand" refers to a scenario where the left hand holds the electronic device 1000 near the head. "Right head and hand" refers to a scenario where the right hand holds the electronic device 1000 near the head. "Free space" refers to a scenario where the electronic device 1000 is not held by any hand.

[0216] Please see Figure 26 , Figure 26These are the S11 curves, radiation efficiency, and system efficiency curves of the first antenna component 110 in the B5 band under the human head and hand scenario. Curve a1 is the S11 curve under the left head and hand scenario. Curve a2 is the S11 curve under the right head and hand scenario. Curve a3 is the S11 curve in free space. Curve b1 is the radiation efficiency curve under the left head and hand scenario. Curve b2 is the radiation efficiency curve under the right head and hand scenario. Curve b3 is the radiation efficiency curve in free space. Curve c1 is the system efficiency curve under the left head and hand scenario. Curve c2 is the system efficiency curve under the right head and hand scenario. Curve c3 is the system efficiency curve in free space.

[0217] In this context, "left head and hand" refers to a scenario where the left hand holds the electronic device 1000 near the head. "Right head and hand" refers to a scenario where the right hand holds the electronic device 1000 near the head. "Free space" refers to a scenario where the electronic device 1000 is not held by any hand.

[0218] It can be seen that in the human head and hand usage scenario, in the B5 band, the performance of the first antenna component 110 and the second antenna component 120 is complementary, which can ensure that there is one antenna component 100 with the best performance in each usage scenario. By switching antennas, depending on the usage scenario, it can switch to the best performing antenna component 100.

[0219] Please see Figure 27 , Figure 27 These are the S11 curves, radiative efficiency, and system efficiency curves of antenna module 120 in the B28 band under the "head and hand" scenario. Curve a1 is the S11 curve under the left head and hand scenario. Curve a2 is the S11 curve under the right head and hand scenario. Curve a3 is the S11 curve in free space. Curve b1 is the radiative efficiency curve under the left head and hand scenario. Curve b2 is the radiative efficiency curve under the right head and hand scenario. Curve b3 is the radiative efficiency curve in free space. Curve c1 is the system efficiency curve under the left head and hand scenario. Curve c2 is the system efficiency curve under the right head and hand scenario. Curve c3 is the system efficiency curve in free space.

[0220] In this context, "left head and hand" refers to a scenario where the left hand holds the electronic device 1000 near the head. "Right head and hand" refers to a scenario where the right hand holds the electronic device 1000 near the head. "Free space" refers to a scenario where the electronic device 1000 is not held by any hand.

[0221] Please see Figure 28 , Figure 28These are the S11 curves, radiation efficiency, and system efficiency curves of the first antenna component 110 in the B28 band under the human head and hand scenario. Curve a1 is the S11 curve under the left head and hand scenario. Curve a2 is the S11 curve under the right head and hand scenario. Curve a3 is the S11 curve in free space. Curve b1 is the radiation efficiency curve under the left head and hand scenario. Curve b2 is the radiation efficiency curve under the right head and hand scenario. Curve b3 is the radiation efficiency curve in free space. Curve c1 is the system efficiency curve under the left head and hand scenario. Curve c2 is the system efficiency curve under the right head and hand scenario. Curve c3 is the system efficiency curve in free space.

[0222] In this context, "left head and hand" refers to a scenario where the left hand holds the electronic device 1000 near the head. "Right head and hand" refers to a scenario where the right hand holds the electronic device 1000 near the head. "Free space" refers to a scenario where the electronic device 1000 is not held by any hand.

[0223] It can be seen that in the human head and hand usage scenario, in the B28 frequency band, the performance of the first antenna component 110 and the second antenna component 120 is complementary, which can ensure that there is one antenna component 100 with the best performance in each usage scenario. By switching antennas, depending on the usage scenario, it can be switched to the antenna component 100 with the best performance.

[0224] Please see Figure 29 , Figure 29 These are the S11 curves, radiation efficiency, and system efficiency curves of antenna module 120 in the B8 band under single-handed scenarios. Curve a1 is the S11 curve in free space. Curve a2 is the S11 curve under single-handed operation. Curve a3 is the S11 curve under single-handed operation. Curve b1 is the radiation efficiency curve in free space. Curve b2 is the radiation efficiency curve under single-handed operation. Curve b3 is the radiation efficiency curve under single-handed operation. Curve c1 is the system efficiency curve in free space. Curve c2 is the system efficiency curve under single-handed operation. Curve c3 is the system efficiency curve under single-handed operation.

[0225] Please see Figure 30 , Figure 30 These are the S11 curve, radiation efficiency, and system efficiency curves of the first antenna component 110 in the B8 band under a single-handed scenario. Curve a1 is the S11 curve in free space. Curve a2 is the S11 curve under a single left-handed scenario. Curve a3 is the S11 curve under a single right-handed scenario. Curve b1 is the radiation efficiency curve in free space. Curve b2 is the radiation efficiency curve under a single left-handed scenario. Curve b3 is the radiation efficiency curve under a single right-handed scenario. Curve c1 is the system efficiency curve in free space. Curve c2 is the system efficiency curve under a single left-handed scenario. Curve c3 is the system efficiency curve under a single right-handed scenario.

[0226] In one-handed use scenarios, in the B8 band, the performance of the second antenna component 120 and the first antenna component 110 is complementary, ensuring that there is a best-performing antenna component 100 in each usage scenario. By switching antenna components 100, the best-performing antenna can be switched according to different usage scenarios.

[0227] Please see Figure 31 , Figure 31 These are the S11 curves, radiation efficiency, and system efficiency curves of antenna module 120 in the B5 band under single-handed scenarios. Curve a1 is the S11 curve in free space. Curve a2 is the S11 curve under single-handed operation. Curve a3 is the S11 curve under single-handed operation. Curve b1 is the radiation efficiency curve in free space. Curve b2 is the radiation efficiency curve under single-handed operation. Curve b3 is the radiation efficiency curve under single-handed operation. Curve c1 is the system efficiency curve in free space. Curve c2 is the system efficiency curve under single-handed operation. Curve c3 is the system efficiency curve under single-handed operation.

[0228] Please see Figure 32 , Figure 32 These are the S11 curve, radiation efficiency, and system efficiency curves of the first antenna component 110 in the B5 band under a single-handed scenario. Curve a1 is the S11 curve in free space. Curve a2 is the S11 curve under a single left-handed scenario. Curve a3 is the S11 curve under a single right-handed scenario. Curve b1 is the radiation efficiency curve in free space. Curve b2 is the radiation efficiency curve under a single left-handed scenario. Curve b3 is the radiation efficiency curve under a single right-handed scenario. Curve c1 is the system efficiency curve in free space. Curve c2 is the system efficiency curve under a single left-handed scenario. Curve c3 is the system efficiency curve under a single right-handed scenario.

[0229] In one-handed use scenarios, in the B5 band, the performance of the second antenna component 120 and the first antenna component 110 is complementary, ensuring that there is a best-performing antenna component 100 in each usage scenario. By switching antenna components 100, the best-performing antenna can be switched according to different usage scenarios.

[0230] Please see Figure 33 , Figure 33 These are the S11 curves, radiation efficiency, and system efficiency curves of antenna module 120 in the B28 band under single-handed scenarios. Curve a1 is the S11 curve in free space. Curve a2 is the S11 curve under single-handed operation. Curve a3 is the S11 curve under single-handed operation. Curve b1 is the radiation efficiency curve in free space. Curve b2 is the radiation efficiency curve under single-handed operation. Curve b3 is the radiation efficiency curve under single-handed operation. Curve c1 is the system efficiency curve in free space. Curve c2 is the system efficiency curve under single-handed operation. Curve c3 is the system efficiency curve under single-handed operation.

[0231] Please see Figure 34 , Figure 34 These are the S11 curves, radiation efficiency curves, and system efficiency curves of the first antenna component 110 in the B28 band under a single-handed scenario. Curve a1 is the S11 curve in free space. Curve a2 is the S11 curve under a single left-handed scenario. Curve a3 is the S11 curve under a single right-handed scenario. Curve b1 is the radiation efficiency curve in free space. Curve b2 is the radiation efficiency curve under a single left-handed scenario. Curve b3 is the radiation efficiency curve under a single right-handed scenario. Curve c1 is the system efficiency curve in free space. Curve c2 is the system efficiency curve under a single left-handed scenario. Curve c3 is the system efficiency curve under a single right-handed scenario.

[0232] In one-handed use scenarios, in the B28 band, the performance of the second antenna component 120 and the first antenna component 110 is complementary, ensuring that there is a best-performing antenna component 100 in each usage scenario. By switching antenna components 100, the best-performing antenna can be switched according to different usage scenarios.

[0233] Please see Figure 35 , Figure 35 These are the S11 curves, radiation efficiency, and system efficiency curves of the first antenna assembly 110 and the second antenna assembly 120 in the B5 band under a two-handed landscape screen scenario. Curve a1 is the S11 curve of the first antenna assembly 110 in a free scenario. Curve a2 is the S11 curve of the first antenna assembly 110 with the USB port facing right. Curve a3 is the S11 curve of the second antenna assembly 120 in free space. Curve a4 is the S11 curve of the second antenna assembly 120 with the USB port facing right. Curve b1 is the system efficiency curve of the first antenna assembly 110 in a free scenario. Curve b2 is the system efficiency curve of the first antenna assembly 110 with the USB port facing right. Curve b3 is the system efficiency curve of the second antenna assembly 120 in free space. Curve b4 is the system efficiency curve of the second antenna assembly 120 with the USB port facing right.

[0234] In landscape gaming scenarios, on the B5 band, the performance of the first antenna component 110 and the second antenna component 120 is complementary in both left and right landscape scenarios, ensuring that there is a top-performing antenna component 100 in each usage scenario. By switching antenna components 100, the best-performing antenna component 100 can be selected according to different usage scenarios.

[0235] Please see Figure 36 , Figure 36These are the S11 curves, radiation efficiency, and system efficiency curves of the first antenna assembly 110 and the second antenna assembly 120 in the B8 band under a two-handed landscape screen scenario. Curve a1 is the S11 curve of the first antenna assembly 110 in a free scenario. Curve a2 is the S11 curve of the first antenna assembly 110 with the USB port facing right. Curve a3 is the S11 curve of the second antenna assembly 120 in free space. Curve a4 is the S11 curve of the second antenna assembly 120 with the USB port facing right. Curve b1 is the system efficiency curve of the first antenna assembly 110 in a free scenario. Curve b2 is the system efficiency curve of the first antenna assembly 110 with the USB port facing right. Curve b3 is the system efficiency curve of the second antenna assembly 120 in free space. Curve b4 is the system efficiency curve of the second antenna assembly 120 with the USB port facing right.

[0236] In landscape gaming scenarios, on the B8 band, the performance of the first antenna component 110 and the second antenna component 120 is complementary in both left and right landscape scenarios, ensuring that there is a best-performing antenna component 100 in each usage scenario. By switching antenna components 100, the best-performing antenna component 100 can be selected according to different usage scenarios.

[0237] Please see Figure 37 , Figure 37 These are the S11 curves, radiation efficiency, and system efficiency curves of the first antenna assembly 110 and the second antenna assembly 120 in the B28 band under a two-handed landscape screen scenario. Curve a1 is the S11 curve of the first antenna assembly 110 in a free scenario. Curve a2 is the S11 curve of the first antenna assembly 110 with the USB port facing right. Curve a3 is the S11 curve of the second antenna assembly 120 in free space. Curve a4 is the S11 curve of the second antenna assembly 120 with the USB port facing right. Curve b1 is the system efficiency curve of the first antenna assembly 110 in a free scenario. Curve b2 is the system efficiency curve of the first antenna assembly 110 with the USB port facing right. Curve b3 is the system efficiency curve of the second antenna assembly 120 in free space. Curve b4 is the system efficiency curve of the second antenna assembly 120 with the USB port facing right.

[0238] In landscape gaming scenarios, on the B28 band, the performance of the first antenna component 110 and the second antenna component 120 is complementary in both left and right landscape scenarios, ensuring that there is a best-performing antenna component 100 in each usage scenario. By switching antenna components 100, the best-performing antenna component 100 can be selected according to different usage scenarios.

[0239] This application provides an antenna layout for a dual low-frequency antenna system. The antenna layout fully considers various usage scenarios, including head-and-hand operation, one-handed operation, and landscape gaming, to ensure optimal performance of the dual low-frequency antenna system and improve user experience. The radiation patterns of the two low-frequency antennas are complementary, and the ECC of both low-frequency antennas is less than 0.5 in the B8 / B5 / B20 / B28 frequency bands. This single-antenna scheme uses a main radiator 11ˋ + a parasitic radiator 12ˋ, fully exciting the radiation mode and 0.5λ resonant mode of the radiator 10ˋ. This results in a B8 / B5 / B20 / B28 efficiency that is approximately 2.6dB to 4.5dB higher than conventional antenna schemes.

[0240] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. An electronic device, characterized in that, include: The border includes a first side border and a second side border that are disposed opposite to each other; The first antenna assembly includes a first feed source and a first radiator. The first radiator is disposed on the first side frame. One end of the first radiator is a first feed point. The first feed source is electrically connected to the first feed point. The first feed source is used to excite the first radiator to support a first frequency band. and The second antenna assembly includes a second feed source and a second radiator. The second radiator is disposed on the second side frame and includes a second feed point. The second feed source is electrically connected to the second feed point. The second feed source is used to excite the second radiator to support the first frequency band.

2. The electronic device as claimed in claim 1, characterized in that, The electronic device further includes a main circuit board, which is disposed between the first side frame and the second side frame. The first feed source and the second feed source are disposed on the main circuit board. The first feed point is disposed adjacent to one side of the main circuit board, and the second feed point is disposed adjacent to the other side of the main circuit board.

3. The electronic device as described in claim 2, characterized in that, The frame also includes a top frame connected between the first side frame and the second side frame, and the distance between the first power supply point and the top frame is equal to the distance between the second power supply point and the top frame.

4. The electronic device as claimed in claim 2, characterized in that, The frame also includes a top frame connected between the first side frame and the second side frame, and the distance between the first power supply point and the top frame is not equal to the distance between the second power supply point and the top frame.

5. The electronic device as claimed in claim 4, characterized in that, The difference between the distance between the first power supply point and the top frame and the distance between the second power supply point and the top frame is less than or equal to 2mm.

6. The electronic device as claimed in claim 2, characterized in that, The electronic device also includes a battery disposed between the first side frame and the second side frame. The main circuit board and the battery are arranged in the direction of the extension of the first side frame. A portion of the first radiator is disposed adjacent to one side of the battery, and a portion of the second radiator is disposed adjacent to the other portion of the battery.

7. The electronic device as claimed in claim 6, characterized in that, The first power supply point is adjacent to the main circuit board near the battery, and the second power supply point is adjacent to the main circuit board near the battery.

8. The electronic device as claimed in claim 1, characterized in that, The first antenna assembly further includes a first capacitor element electrically connected between the first feed point and the first feed source; and / or, The second antenna assembly further includes a second capacitor element, which is electrically connected between the second feed point and the second feed source.

9. The electronic device as claimed in claim 1, characterized in that, One end of the first radiator is a first grounding terminal, and the first grounding terminal is grounded; and / or, One end of the second radiator is a second grounding terminal, and the second grounding terminal is grounded.

10. The electronic device as claimed in claim 9, characterized in that, The first radiator includes a first main radiator and a first parasitic radiator. The first main radiator includes a first feed point and a first free end. The first parasitic radiator includes a second free end and a first grounding end. The first free end and the second free end are spaced apart.

11. The electronic device as claimed in claim 10, characterized in that, The distance between the first free end and the second free end is less than or equal to a preset distance, and an equivalent coupling capacitance is formed between the first free end and the second free end.

12. The electronic device as claimed in claim 11, characterized in that, The distance between the first free end and the second free end is 0.5 mm.

13. The electronic device as claimed in claim 10, characterized in that, The first antenna assembly further includes a third capacitor element, one end of which is electrically connected to the first free end, and the other end of which is electrically connected to the second free end.

14. The electronic device as claimed in claim 10, characterized in that, The length of the first main radiator is greater than the length of the first parasitic radiator. The first feed excites the first radiator to form a first resonant mode supporting the first frequency band and a second resonant mode supporting the second frequency band. The current direction of the first resonant mode in the first main radiator is the same as the current direction in the first parasitic radiator, and the current direction of the second resonant mode in the first main radiator is opposite to the current direction in the first parasitic radiator.

15. The electronic device according to any one of claims 1 to 14, characterized in that, The first antenna assembly further includes a switch switching circuit, which includes a switch unit and a plurality of tuning circuits electrically connected to one end of the switch unit. The other end of the switch unit is electrically connected to the first feed point. The tuning circuit includes a capacitor or an inductor. The plurality of tuning circuits are used to tune the magnitude of the first frequency band.

16. The electronic device according to any one of claims 1 to 14, characterized in that, The structure of the first antenna assembly is the same as that of the second antenna assembly, and the first frequency band covers at least one sub-band of the LB frequency band.

17. The electronic device according to any one of claims 1 to 14, characterized in that, The electronic device further includes a selection switching circuit, which is electrically connected between the first feed point and the first feed source, and electrically connected between the second feed source and the second feed point. The selection switching circuit is configured to connect the first feed source and the first feed point, and / or connect the second feed source and the second feed point.

18. An antenna assembly, characterized in that, The antenna assembly includes: A radiator, comprising a main radiator and a parasitic radiator, wherein the main radiator includes a feed point and a first free end, and the parasitic radiator includes a second free end and a grounding end, wherein an equivalent capacitance or an electrical connection capacitor is formed between the first free end and the second free end; and A feed source, wherein the feed source is electrically connected to the feed point; A capacitor element is electrically connected between the feed point and the feed source; the feed source is used to excite the radiator to support a first frequency band.

19. The antenna assembly as claimed in claim 18, characterized in that, An equivalent capacitance is formed between the first free end and the second free end, and the distance between the first free end and the second free end is 0.5 mm.

20. The antenna assembly as claimed in claim 18, characterized in that, The length of the main radiator is greater than the length of the parasitic radiator. The feed source excites the radiator to form a first resonant mode supporting the first frequency band and a second resonant mode supporting the second frequency band. The current direction of the first resonant mode in the main radiator is the same as the current direction in the parasitic radiator, and the current direction of the second resonant mode in the main radiator is opposite to the current direction in the parasitic radiator.

21. The antenna assembly as claimed in claim 18, characterized in that, The antenna assembly further includes a switch switching circuit, which includes a switch unit and a plurality of tuning circuits electrically connected to one end of the switch unit. The other end of the switch unit is electrically connected to the feed point. The tuning circuit includes a capacitor or an inductor. The plurality of tuning circuits are used to tune the magnitude of the first frequency band.

22. An electronic device, characterized in that, The electronic device includes an antenna assembly and a frame as described in any one of claims 18 to 21, the frame including a side frame, and the radiator disposed on the side frame.

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