Antenna device and electronic equipment

Abstract

The invention provides an antenna device and electronic equipment, and belongs to the technical field of antennas. The antenna device comprises a first radiation branch knot and a circuit board. The first radiation branch knot comprises a first feeding point, a second feeding point and a first grounding point; the first end part of the first radiation branch knot is provided with a breaking joint structure, the first grounding point is located at the second end part of the first radiation branch knot, the first feeding point and the second feeding point are respectively located between the first end part and the second end part, the first feeding point is close to the second end part, and the second feeding point is close to the first end part; a wiring structure is arranged on the circuit board; the wiring structure is electrically connected with the second feeding point, and the second feeding point is electrically connected to the wiring structure. According to the antenna device, the second feeding point and the wiring structure are utilized, the current flowing path of the first radiation branch knot can be enriched, the length of the current flowing path is increased, the antenna device has better working performance, and the requirement of WiFi communication can be met.

Description

Technical Field

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

[0002] Wireless-fidelity (WiFi) communication, as a wireless local area network (WLAN) technology, has been widely used in electronic devices such as smartphones. With the continuous upgrading of WiFi communication technology, the frequency band has been increased from the initial 2.4G to the 5G band. The latest WiFi6e and WiFi7 standards have supported the frequency band up to 7G.

[0003] However, the antenna solutions used in electronic devices in the related art cannot meet the requirements of WiFi communication. Summary of the invention

[0004] The present application provides an antenna device and an electronic device, which can solve the problem that the antenna solution cannot meet the WiFi communication requirements.

[0005] The technical solution is as follows:

[0006] In one aspect, an antenna device is provided, the antenna device comprising: a first radiation branch and a circuit board;

[0007] The first radiation branch includes a first feeding point, a second feeding point and a first grounding point;

[0008] A first end of the first radiation branch is provided with a broken seam structure, the first grounding point is located at the second end of the first radiation branch, the first feeding point and the second feeding point are respectively located between the first end and the second end, and the first feeding point is close to the second end, and the second feeding point is close to the first end;

[0009] The circuit board is provided with a wiring structure;

[0010] The routing structure is electrically connected to the second feeding point, and the second feeding point is electrically connected to the routing structure.

[0011] In some embodiments, the antenna device further comprises a second radiation branch, wherein the second radiation branch comprises a third feeding point and a second grounding point;

[0012] The third end of the second radiation branch is arranged opposite to the first end, the fracture structure is located between the third end and the first end, the third feeding point is located at the third end, and the second grounding point is located at the fourth end of the second radiation branch.

[0013] In some embodiments, the circuit board is further provided with a first matching circuit and a second matching circuit;

[0014] The first matching circuit is electrically connected to the first feeding point, and the second matching circuit is electrically connected to the third feeding point.

[0015] In some embodiments, the distance between the first end and the second end of the first radiation branch is L1, the distance between the first feeding point and the first end is L2, and the distance between the second feeding point and the second end is L3, satisfying that the value range of L2 / L1 is 0.05-0.09, and the value range of L3 / L1 is 0.5-0.7;

[0016] The distance between the third end and the fourth end of the second radiation branch is L4, and the distance between the third feeding point and the third end is L5, satisfying that the value range of L4 / L1 is 0.2-0.4, and the value range of L5 / L4 is 0.1-0.3.

[0017] In some embodiments, a conductive spring is disposed on at least one of the first feeding point and the second feeding point.

[0018] On the other hand, an electronic device is provided, the electronic device comprising: the antenna device described in the present application, and a middle frame structure;

[0019] The middle frame structure includes at least one side frame and a middle support plate; a slot structure is provided between the at least one side frame and the middle support plate, and the slot structure enables at least a portion of the at least one side frame to be suspended to form the first radiation branch;

[0020] The circuit board is located on the middle support plate, and a second feeding branch is provided on the second feeding point. The second feeding branch extends toward the side where the middle support plate is located and is electrically connected to the routing structure.

[0021] In some embodiments, the middle support plate is provided with at least one avoidance groove;

[0022] The position of the at least one avoidance groove corresponds to the position of the second feeding point, and the second feeding branch extends into the at least one avoidance groove and is electrically connected to the routing structure in the at least one avoidance groove.

[0023] In some embodiments, the antenna device further includes a second radiation branch, and at least a portion of the at least one side frame is suspended to form the second radiation branch;

[0024] The circuit board is provided with a first matching circuit and a second matching circuit;

[0025] A first feeding branch is provided on the first feeding point, and a third feeding branch is provided on the third feeding point. The first feeding branch extends toward the side where the middle support plate is located and is electrically connected to the first matching circuit. The third feeding branch extends toward the side where the middle support plate is located and is electrically connected to the second matching circuit.

[0026] In some embodiments, the position of the at least one avoidance slot corresponds to the position of the first feeding point, the first feeding branch extends into the at least one avoidance slot, and is electrically connected to the first matching circuit in the at least one avoidance slot;

[0027] and / or,

[0028] The position of the at least one avoidance slot corresponds to the position of the third feeding point. The third feeding branch extends into the at least one avoidance slot and is electrically connected to the second matching circuit in the at least one avoidance slot.

[0029] In some embodiments, a retaining wall structure is provided at the edge of the middle support plate toward the first radiation branch node and the second radiation branch node, and two ends of the retaining wall structure extend to the area where the first radiation branch node is located and the area where the second radiation branch node is located, respectively;

[0030] At least one avoidance opening is provided on the retaining wall structure, and at least one of the first feeding branch node, the second feeding branch node and the third feeding branch node extends to the side where the middle support plate is located through the at least one avoidance opening.

[0031] In some embodiments, when the first feeding branch node, the second feeding branch node or the third feeding branch node is located in the at least one avoidance opening, a distance L6 between the first feeding branch node, the second feeding branch node or the third feeding branch node and an inner wall of the at least one avoidance opening is in a range of 2-3 mm.

[0032] In some embodiments, the electronic device further comprises a key assembly, wherein the key assembly is located inside the first radiation branch;

[0033] The key assembly includes a flexible circuit board and a bracket, wherein the bracket is located between the flexible circuit board and the first radiation branch, and the bracket is used to support the flexible circuit board in a direction away from the first radiation branch;

[0034] A plurality of key wirings are arranged on the surface of the flexible circuit board, and a bending portion is arranged on the key wiring and / or at least one resistance element is arranged on the key wiring.

[0035] The beneficial effects of the technical solution provided by this application include at least:

[0036] The antenna device of the present application, the first radiating branch includes a first feeding point and a second feeding point, wherein the second feeding point is close to the first end of the first radiating branch, the first end of the first radiating branch is provided with a break structure, the second feeding point is electrically connected to the routing structure on the circuit board, and the second feeding point and the routing structure can be used to enrich the current flow path of the first radiating branch and increase the length of the current flow path, so that the antenna device has better working performance and can meet the needs of WiFi communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 is a schematic diagram of the structure of the antenna device provided in Embodiment 1 of the present application;

[0039] Figure 2 is a structural schematic diagram of an antenna device and an electronic device provided in Embodiment 2 of the present application;

[0040] Figure 3 yes Figure 2 The local structure cross-sectional view at AA in the middle;

[0041] Figure 4 This is an efficiency test diagram of the antenna structure provided in Example 2 of the present application;

[0042] Figure 5 is a schematic diagram of current distribution of the antenna structure provided in Embodiment 2 of the present application;

[0043] Figure 6 is a schematic diagram of the structure of an electronic device provided in Embodiment 3 of the present application;

[0044] Figure 7 This is a schematic diagram of the structure of the key routing on the flexible circuit board provided in the third embodiment of the present application;

[0045] Figure 8 This is an efficiency test diagram of the antenna device in the electronic device provided in the third embodiment of the present application.

[0046] The reference numerals in the figures represent respectively:

[0047] 1. The first radiating branch;

[0048] 101, first end; 102, second end;

[0049] 11. first feeding point; 111. first feeding branch; 12. second feeding point; 121. second feeding branch; 13. first grounding point;

[0050] 2. Circuit board;

[0051] 21. wiring structure; 22. first matching circuit; 23. second matching circuit;

[0052] 3. Fracture structure;

[0053] 4. Second radiating branch;

[0054] 401, third end; 402, fourth end;

[0055] 41. a third feeding point; 411. a third feeding branch; 42. a second grounding point;

[0056] 5. Middle frame structure;

[0057] 51. side frame; 52. middle support plate; 521. avoidance groove; 53. retaining wall structure; 531. avoidance opening; 54. slot structure;

[0058] 6. Button assembly;

[0059] 61. Flexible circuit board; 611. Button wiring; 612. Bending part; 613. Resistor element; 62. Bracket. DETAILED DESCRIPTION

[0060] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0061] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0062] It should be understood that in this application, "electrical connection" can be understood as physical contact and electrical conduction between components; it can also be understood as a form of connection between different components in the circuit structure through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals. "Communication connection" can refer to electrical signal transmission, including wireless communication connection and wired communication connection. Wireless communication connection does not require a physical medium and does not belong to a connection relationship that limits the product structure. "Connection" and "connected" can both refer to a mechanical connection relationship or a physical connection relationship, that is, A is connected to B or A is connected to B, which can mean that there is a fastening component (such as screws, bolts, rivets, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to separate.

[0063] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0064] WiFi7, the seventh generation of WiFi wireless network, can reach speeds of up to 30Gbps, which is three times the maximum rate of 9.6Gbps of WiFi6. Wi-Fi7 is built on the basis provided by Wi-Fi6E, supports 320MHz bandwidth, 4096-QAM modulation, MRU / MLO and other cutting-edge technologies, allows the use of spectrum resources from 1GHz to 7.2GHz, and focuses on compatibility with the previous WiFi standard 2.4GHz, 5GHz, and 6GHz bands. It achieves a larger theoretical bandwidth through an ultra-large spectrum surface, so the theoretical maximum bandwidth is 30Gbps.

[0065] WiFi7 can aggregate multiple channels and alleviate link interruption problems in network congestion environments to provide higher-speed, stable, and reliable connections. These advantages will help deliver high-quality videos and better cloud games, and they will serve AR and VR applications that require high throughput and low latency. WiFi7 also solves congestion and interference problems, bringing tangible benefits to areas with dense devices or overlapping adjacent networks, which is especially important for enterprises and large venues.

[0066] However, in related technologies, the signal frequency bands that electronic devices need to cover are increasing day by day, and the number of antennas is also increasing. Antenna integration has always been a huge challenge in antenna design. The application of WiFi7 also faces this problem. If the coverage of WiFi7 frequency band is achieved without affecting the performance of the original antenna, it is an urgent problem to be solved.

[0067] Therefore, the present application provides an antenna device, which utilizes the routing structure of the second feeding point and the circuit board surface to enrich the current flow path of the first radiation branch and increase the length of the current flow path, so that the antenna device has the radiation capability to cover the WiFi7 frequency band.

[0068] The present application provides an electronic device. Specifically, the electronic device can be any of various types of computer system devices that are mobile or portable and perform wireless communication. Specifically, the electronic device can be a mobile phone or smart phone (e.g., a phone based on iPhone TM, a phone based on Android TM), a portable game device (e.g., NintendoDS TM, PlayStation Portable TM, Gameboy Advance TM, iPhone TM), a laptop, a PDA, a portable Internet device, a music player, and a data storage device, other handheld devices, and headsets, etc. The electronic device can also be other wearable devices that need to be charged (e.g., a head-mounted device (HMD) such as an electronic bracelet, an electronic necklace, an electronic device, or a smart watch).

[0069] The electronic device can also be any one of a plurality of electronic devices, including but not limited to cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, other media recorders, radios, medical devices, vehicle transportation instruments, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbook computers, personal digital assistants (PDAs), portable multimedia players (PMPs), Moving Picture Experts Group (MPEG-1 or MPEGG-2) Audio Layer 3 (MP3) players, portable medical devices, and digital cameras and combinations thereof.

[0070] In some cases, the electronic device can perform multiple functions (e.g., play music, display video, store pictures, and receive and send phone calls). If desired, the electronic device can be a device such as a cellular phone, a media player, other handheld device, a wristwatch device, a pendant device, a handset device, or other compact portable device.

[0071] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0072] On the one hand, combined with Figure 1 , 2 As shown, this embodiment provides an antenna device, which includes: a first radiation branch 1 and a circuit board 2.

[0073] The first radiating branch node 1 includes a first feeding point 11, a second feeding point 12 and a first grounding point 13; the first end 101 of the first radiating branch node 1 is provided with a broken structure 3, the first grounding point 13 is located at the second end 102 of the first radiating branch node 1, the first feeding point 11 and the second feeding point 12 are respectively located between the first end 101 and the second end 102, and the first feeding point 11 is close to the second end 102, and the second feeding point 12 is close to the first end 101.

[0074] A wiring structure 21 is provided on the circuit board 2 ; the wiring structure 21 is electrically connected to the second feeding point 12 , and the second feeding point 12 is electrically connected to the wiring structure 21 .

[0075] In the antenna device of this embodiment, the first radiating branch 1 includes a first feeding point 11 and a second feeding point 12, wherein the second feeding point 12 is close to the first end 101 of the first radiating branch 1, and the first end 101 of the first radiating branch 1 is provided with a break structure 3, and the second feeding point 12 is electrically connected to the routing structure 21 on the circuit board 2. By utilizing the second feeding point 12 and the routing structure 21, the current flow path of the first radiating branch 1 can be enriched and the length of the current flow path can be increased, so that the antenna device has better working performance and can meet the needs of WiFi communication.

[0076] The second feeding point 12 does not need to add matching devices, and is connected to the routing structure 21 of the circuit board 2, so that the first radiation branch 1 adds a current path, so that the coupling strength of the current is increased within the WiFi7 frequency band, the radiation performance of the antenna device is improved, and it is beneficial to improve the efficiency within the frequency band. Because of the introduction of the second feeding point 12, the antenna device of this embodiment has multiple superimposed current paths in a smaller space, so that the performance within the WiFi7 frequency band is significantly enhanced.

[0077] In some possible implementations, the circuit board 2 includes a printed circuit board (PCB), a flexible printed circuit board (FPC), a rigid-flexible board, and the like.

[0078] Among them, illustratively, the circuit board 2 is part of the mainboard module of the electronic device. The mainboard module is one of the core components of the electronic device, which is responsible for controlling and managing various functions and components of the electronic device. The mainboard module integrates key components such as the processor, memory, storage chip, communication chip, power management chip, etc., and is also connected to external devices such as the screen, camera, button, speaker, etc. The mainboard module plays the role of connecting and coordinating various components, so that the electronic device can operate normally and provide various functions.

[0079] In another exemplary embodiment, the wiring structure 21 is a surface wiring structure of the circuit board 2 .

[0080] The surface wiring structure, i.e., surface wiring, refers to the circuit wiring arranged on the surface of the PCB (Printed Circuit Board). In circuit design, the wires and pins of electronic components are directly arranged on the surface of the PCB to achieve circuit connection and signal transmission.

[0081] Optionally, the surface wiring uses printing technology to print the conductor pattern on the surface of the PCB. This wiring method is more common and intuitive than the inner wiring (internal routing through a multi-layer PCB board). Optionally, the surface wiring uses copper foil as the conductor material, and the excess copper foil is removed by chemical etching or mechanical processing to form the required routing structure 21.

[0082] The advantages of surface wiring are simple wiring process, good visibility and easy maintenance. It makes the circuit board manufacturing process more efficient and can meet a variety of different circuit wiring requirements. In addition, surface wiring can also achieve higher wiring density and shorter signal transmission paths, which helps to improve the performance and reliability of the circuit.

[0083] In some other possible implementations, the first radiation branch 1 is a metal frame antenna. The first grounding point 13 may be grounded through a grounding circuit, or may be grounded in a form of being integrally connected to the metal middle frame.

[0084] Combination Figure 1 , 2 As shown, in some embodiments, the antenna device further includes a second radiation branch 4 , and the second radiation branch 4 includes a third feeding point 41 and a second grounding point 42 .

[0085] The third end 401 of the second radiation branch 4 is arranged opposite to the first end 101 , the fracture structure 3 is located between the third end 401 and the first end 101 , the third feeding point 41 is located at the third end 401 , and the second grounding point 42 is located at the fourth end 402 of the second radiation branch 4 .

[0086] Through the above arrangement, the antenna device can utilize the first radiation branch 1 and the second radiation branch 4 to work together to achieve more frequency band coverage, and realize a multi-antenna fusion design, thereby improving the stacking efficiency of the antenna device.

[0087] Combination Figure 1 As shown, in some embodiments, a first matching circuit 22 and a second matching circuit 23 are further provided on the circuit board 2; the first matching circuit 22 is electrically connected to the first feeding point 11, and the second matching circuit 23 is electrically connected to the third feeding point 41.

[0088] By using the first matching circuit 22 and the second matching circuit 23 arranged on the circuit board 2, the first radiation branch 1 and the second radiation branch 4 can be matched and adjusted respectively, so that the antenna device can cover more frequency bands and improve the broadband performance of the antenna device.

[0089] Combination Figure 1 As shown, in some embodiments, the distance between the first end 101 and the second end 102 of the first radiating branch 1 (i.e., the length of the first radiating branch 1) is L1, the distance between the first feeding point 11 and the first end 101 (i.e., the return distance of the first feeding point 11 to the ground) is L2, and the distance between the second feeding point 12 and the second end 102 is L3, satisfying that the value range of L2 / L1 is 0.05-0.09, and the value range of L3 / L1 is 0.5-0.7.

[0090] In some possible implementations, the value of L2 / L1 is, for example, 0.05, 0.06, 0.07, 0.08, 0.09, etc. Optionally, the value of L2 / L1 is 0.07.

[0091] In some other possible implementations, the value of L3 / L1 is, for example, 0.5, 0.52, 0.55, 0.58, 0.6, 0.62, 0.64, 0.65, 0.66, 0.68, 0.7, etc. Optionally, the value of L3 / L1 is 0.64.

[0092] The distance between the third end 401 and the fourth end 402 of the second radiating branch 4 (i.e., the length of the second radiating branch 4) is L4, and the distance between the third feeding point 41 and the third end 401 (i.e., the return distance of the third feeding point 41 to the ground) is L5, satisfying that the value range of L4 / L1 is 0.2-0.4, and the value range of L5 / L4 is 0.1-0.3.

[0093] In some possible implementations, the value of L4 / L1 is, for example, 0.2, 0.22, 0.25, 0.28, 0.3, 0.32, 0.35, 0.38, 0.4, etc. Optionally, the value of L4 / L1 is 0.3.

[0094] In some other possible implementations, the value of L5 / L4 is, for example, 0.1, 0.12, 0.15, 0.18, 0.2, 0.22, 0.24, 0.25, 0.26, 0.28, 0.3, etc. Optionally, the value of L5 / L4 is 0.24.

[0095] When the first radiation branch 1 and the second radiation branch 4 meet the above value range, the antenna device can cover N5 (uplink 824-849MHz, downlink 869-894MHz), N8 (uplink 880-915MHz, downlink 925-960MHz), N28 (uplink 703-748MHz, downlink 758-803MHz), WiFi2.4G (2.4Ghz-2.5GHz), WIFI5G (4.9GHz-5.9GHz) and WIFI7 frequency bands, wherein the first radiation branch 1 and the second radiation branch 4 can also achieve LB4+WIFI7 frequency band coverage. The LB4 frequency band refers to the frequency band 4 in LTE (Long Term Evolution, i.e. 4G network). In the LTE network, the frequency range of band 4 is 2110MHz to 2170MHz. This frequency band is mainly used for uplink and downlink communications, and supports services such as data transmission and voice calls.

[0096] In some embodiments, a conductive spring is provided on at least one of the first feeding point 11 and the second feeding point 12. Exemplarily, the first feeding point 11 is electrically connected to the first matching circuit 22 on the surface of the circuit board 2 through the conductive spring, and the second feeding point 12 is electrically connected to the first matching circuit 22 on the surface of the circuit board 2 through the conductive spring. In another exemplary embodiment, the third feeding point 41 is electrically connected to the second matching circuit 23 on the surface of the circuit board 2 through the conductive spring.

[0097] refer to Figure 4 and Figure 5 ,in Figure 4 yes Figure 2 The efficiency test diagram of the antenna structure shown in the figure shows the antenna efficiency with and without the second feeding point 12, respectively. It can be seen that the efficiency of adding the second feeding point 12 is improved by about 2dB overall in the WiFi7 frequency band compared with the efficiency without the second feeding point 12. Figure 5 yes Figure 2 The schematic diagram of the current distribution of the antenna structure shown in the figure shows that adding the second feeding point 12 can provide a new current flow path, so that the current coupling strength of the antenna device is increased within the WiFi7 frequency band.

[0098] On the other hand, combined Figure 2 , 3 As shown, this embodiment provides an electronic device, which includes: the antenna device of the present application, and a middle frame structure 5.

[0099] The middle frame structure 5 includes at least one side frame 51 and a middle support plate 52; a slit structure 54 is provided between at least one side frame 51 and the middle support plate 52, and the slit structure 54 allows at least part of at least one side frame 51 to be suspended to form a first radiation branch 1; the circuit board 2 is located on the middle support plate 52, and a second feeding branch 121 is provided on the second feeding point 12, and the second feeding branch 121 extends toward the side where the middle support plate 52 is located, and is electrically connected to the routing structure 21.

[0100] The electronic device of this embodiment adopts the antenna device provided by this application and has all the beneficial technical effects of this application.

[0101] Part of the structure of the side frame 51 in this embodiment is suspended to form the above-mentioned first radiation branch 1, and the circuit board 2 is supported and fixed by the middle support plate 52. The second feeding point 12 utilizes the second feeding branch 121 extending toward the middle support plate 52 to achieve electrical connection with the wiring structure 21. The wiring structure 21 and the second feeding branch 121 can both achieve the effect of increasing the current flow path, thereby further improving the wireless communication performance of the electronic device.

[0102] Exemplarily, the middle frame structure 5 is a metal middle frame, wherein the side frames 51 and the middle support plate 52 can be assembled structures or integrally formed structures.

[0103] Combination Figure 2 As shown, in some embodiments, the middle support plate 52 is provided with at least one avoidance groove 521; the position of at least one avoidance groove 521 corresponds to the position of the second feeding point 12, and the second feeding branch 121 extends into at least one avoidance groove 521, and is electrically connected to the routing structure 21 in at least one avoidance groove 521.

[0104] By accommodating the second feeding branch 121 through the avoidance groove 521 arranged on the middle support plate 52, the second feeding branch 121 can extend as far as possible toward the side where the middle support plate 52 is located until it partially overlaps with the circuit board 2, so that it can be electrically connected to the wiring structure 21 on the surface of the circuit board 2 through the conductive spring sheet.

[0105] The second feeding branch 121 can also be coupled with the inner wall of the avoidance slot 521 , so that the coupling current of the inner wall of the avoidance slot 521 is also enhanced, further increasing the radiation performance and improving the efficiency.

[0106] Combination Figure 2 , 3 As shown, in some embodiments, the antenna device further includes a second radiation branch 4, and at least a portion of at least one side frame 51 is suspended to form the second radiation branch 4; the circuit board 2 is provided with a first matching circuit 22 and a second matching circuit 23.

[0107] A first feeding branch 111 is provided on the first feeding point 11, and a third feeding branch 411 is provided on the third feeding point 41. The first feeding branch 111 extends toward the side where the middle supporting plate 52 is located and is electrically connected to the first matching circuit 22. The third feeding branch 411 extends toward the side where the middle supporting plate 52 is located and is electrically connected to the second matching circuit 23.

[0108] Through the above arrangement, the first feeding point 11 utilizes the first feeding branch 111 extending toward the middle support plate 52 to achieve electrical connection with the first matching circuit 22, and the third feeding point 41 utilizes the third feeding branch 411 extending toward the middle support plate 52 to achieve electrical connection with the second matching circuit 23. The first radiating branch 1 and the second radiating branch 4 work together to achieve more frequency band coverage, and realize multi-antenna fusion design to improve the wireless communication performance of electronic equipment.

[0109] Combination Figure 2 As shown, in some embodiments, the position of at least one avoidance slot 521 corresponds to the position of the first feeding point 11 , the first feeding branch 111 extends into at least one avoidance slot 521 , and is electrically connected to the first matching circuit 22 in at least one avoidance slot 521 .

[0110] In some other embodiments, the position of at least one avoidance slot 521 corresponds to the position of the third feeding point 41 , and the third feeding branch 411 extends into the at least one avoidance slot 521 and is electrically connected to the second matching circuit 23 in the at least one avoidance slot 521 .

[0111] The avoidance groove 521 arranged on the middle support plate 52 accommodates the first feed branch node 111 and the third feed branch node 411 respectively, so that the first feed branch node 111 and the third feed branch node 411 can extend as far as possible toward the side where the middle support plate 52 is located until they overlap with part of the circuit board 2, so that the first matching circuit 22 or the second matching circuit 23 on the surface of the circuit board 2 can be electrically connected through the conductive spring sheet.

[0112] The first feeding branch node 111 and the third feeding branch node 411 can be coupled with the inner wall of the avoidance slot 521 , so that the coupling current of the inner wall of the avoidance slot 521 is also enhanced, further increasing the radiation performance and improving the efficiency.

[0113] Combination Figure 2 , 3As shown, in some embodiments, a retaining wall structure 53 is provided at the edge of the middle support plate 52 toward the first radiation branch node 1 and the second radiation branch node 4, and both ends of the retaining wall structure 53 extend to the area where the first radiation branch node 1 and the area where the second radiation branch node 4 are located, respectively. At least one avoidance opening 531 is provided on the retaining wall structure 53, and at least one of the first feed branch node 111, the second feed branch node 121, and the third feed branch node 411 extends to the side where the middle support plate 52 is located through the at least one avoidance opening 531.

[0114] Thus, the retaining wall structure 53 spans the fracture structure 3, which is beneficial to improving the structural strength of the middle frame structure 5 on both sides of the fracture structure 3. The retaining wall structure 53 and the middle support plate 52 can be assembled structures or integrally formed structures.

[0115] Combination Figure 3 As shown, in some embodiments, when the first feeding branch node 111, the second feeding branch node 121 or the third feeding branch node 411 is located in at least one avoidance opening 531, the distance L6 between the first feeding branch node 111, the second feeding branch node 121 or the third feeding branch node 411 and the inner wall of at least one avoidance opening 531 is in the range of 2-3 mm.

[0116] By properly arranging the distance L6 between the feeding branch and the inner wall of the avoidance hole, the coupling effect between the inner wall of the avoidance hole and the feeding branch can be optimized, and the structural strength of the fracture structure 3 can be enhanced without affecting the in-band performance of the antenna device.

[0117] In some possible implementations, the distance L6 between the feeding branch and the inner wall of the avoidance opening 531 is, for example, 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, etc. Optionally, the value of L6 is 2.5 mm.

[0118] It should be noted that the distances between the feeding branch and the inner walls of the avoidance hole in different directions may be the same or different, and this application does not limit this.

[0119] Combination Figure 6 , 7 As shown, in some embodiments, the electronic device further includes a key assembly 6 , and the key assembly 6 is located inside the first radiation branch 1 .

[0120] The key assembly 6 includes a flexible printed circuit board 61 (FPC) and a bracket 62, wherein the bracket 62 is located between the flexible printed circuit board 61 and the first radiating branch 1, and the bracket 62 is used to support the flexible printed circuit board 61 in a direction away from the first radiating branch 1; a plurality of key traces 611 are provided on the surface of the flexible printed circuit board 61, and a bending portion 612 and / or at least one resistor element 613 are provided on the key trace 611.

[0121] Through the above arrangement, the bracket 62 can increase the distance between the first radiating branch 1 and the flexible circuit board 61, which is conducive to increasing the lateral clearance of the first radiating branch 1 and reducing the interference of the flexible circuit board 61 to the first radiating branch 1. This is because there is a signal current in the FPC, which interferes with the first radiating branch 1, but when the distance between the two increases, the interference will decrease. At the same time, the introduction of the bracket 62 can also ensure the stability of the FPC when it is inserted sideways.

[0122] Exemplarily, the bracket 62 is made of insulating materials such as silicone, plastic, etc.

[0123] In some possible implementations, the bending portion 612 refers to changing the originally parallel key wiring 611 to an arc or zigzag arrangement, optimizing the plane shape of the key wiring 611, reducing the presence of parallel lines, and reducing the mutual coupling between the key wiring 611, which is conducive to reducing the interference of the LB4 in-band performance and optimizing the in-band performance of LB4. Optionally, a resistor element 613 is arranged between different key wirings 611, which can ensure that the current signal between the key wirings 611 is not blocked, and can reduce the current impact, thereby further optimizing the in-band performance of LB.

[0124] refer to Figure 8 , Figure 8 Shows the use of Figure 7 From the working efficiency of the antenna device in the electronic device of the FPC shown, it can be seen that by optimizing the key assembly 6 and the key trace 611 of the FPC inside it, the working efficiency of the antenna device in the LB4 frequency band is improved by 3-4dB.

[0125] In some possible implementations, the functions corresponding to the button assembly 6 include but are not limited to a volume up button, a volume down button, a one-button mute button, and a display light on / off button.

[0126] The display on / off button can also be used to shut down and restart electronic devices.

[0127] Exemplarily, the button assembly 6 is connected to the main board module of the electronic device via a flexible circuit board. By pressing the button assembly 6, the flexible circuit board 61 generates a control instruction and transmits the control instruction to the main board module of the electronic device.

[0128] Exemplarily, the button assembly 6 includes but is not limited to a volume button and a power button, wherein the upper and lower ends of the volume button are respectively provided with button contacts for increasing the volume and decreasing the volume, and the first feeding point 11 and the second feeding point 12 are located between the upper and lower button contacts. The power button can be located below the volume button, on the first radiation branch 1, or outside the first radiation branch 1.

[0129] It should be noted that the "several" and "at least one" mentioned in this article refer to one or more, and "multiple" and "at least two" refer to two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0130] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0131] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0132] In the description of this specification, the reference terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application.

[0133] The above description is only an embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. An antenna device, characterized in that: The antenna device comprises: a first radiation branch (1) and a circuit board (2); The first radiation branch (1) comprises a first feeding point (11), a second feeding point (12) and a first grounding point (13); The first end (101) of the first radiation branch (1) is provided with a fracture structure (3); the first grounding point (13) is located at the second end (102) of the first radiation branch (1); the first feeding point (11) and the second feeding point (12) are respectively located between the first end (101) and the second end (102); the first feeding point (11) is close to the second end (102), and the second feeding point (12) is close to the first end (101); A wiring structure (21) is provided on the circuit board (2), and the second feeding point (12) is electrically connected to the wiring structure (21).

2. The antenna device according to claim 1, characterized in that The antenna device further comprises a second radiation branch (4), wherein the second radiation branch (4) comprises a third feeding point (41) and a second grounding point (42); The third end (401) of the second radiation branch (4) is arranged opposite to the first end (101), the fracture structure (3) is located between the third end (401) and the first end (101), the third feeding point (41) is located at the third end (401), and the second grounding point (42) is located at the fourth end (402) of the second radiation branch (4).

3. The antenna device according to claim 2, characterized in that The circuit board (2) is also provided with a first matching circuit (22) and a second matching circuit (23); the first matching circuit (22) is electrically connected to the first feeding point (11), and the second matching circuit (23) is electrically connected to the third feeding point (41).

4. The antenna device according to claim 2, characterized in that: The distance between the first end (101) and the second end (102) of the first radiation branch (1) is L1, the distance between the first feeding point (11) and the first end (101) is L2, and the distance between the second feeding point (12) and the second end (102) is L3, satisfying that the value range of L2 / L1 is 0.05-0.09, and the value range of L3 / L1 is 0.5-0.7; The distance between the third end (401) and the fourth end (402) of the second radiating branch (4) is L4, and the distance between the third feeding point (41) and the third end (401) is L5, satisfying that the value range of L4 / L1 is 0.2-0.4, and the value range of L5 / L4 is 0.1-0.

3.

5. The antenna device according to any one of claims 1 to 4, characterized in that: A conductive spring is provided on at least one of the first feeding point (11) and the second feeding point (12).

6. An electronic device, characterized in that: The electronic device comprises: the antenna device according to any one of claims 1 to 5, and a middle frame structure (5); The middle frame structure (5) comprises at least one side frame (51) and a middle support plate (52); a slot structure (54) is provided between the at least one side frame (51) and the middle support plate (52), and the slot structure (54) enables at least a portion of the at least one side frame (51) to be suspended to form the first radiation branch (1); The circuit board (2) is located on the middle support plate (52), and a second feeding branch (121) is provided on the second feeding point (12), and the second feeding branch (121) extends toward the side where the middle support plate (52) is located and is electrically connected to the routing structure (21).

7. The electronic device according to claim 6, characterized in that: The middle support plate (52) is provided with at least one avoidance groove (521); the position of the at least one avoidance groove (521) corresponds to the position of the second feeding point (12); the second feeding branch (121) extends into the at least one avoidance groove (521) and is electrically connected to the routing structure (21) in the at least one avoidance groove (521).

8. The electronic device according to claim 6 or 7, characterized in that: The antenna device further comprises a second radiation branch (4), wherein at least a portion of the at least one side frame (51) is suspended to form the second radiation branch (4); The circuit board (2) is provided with a first matching circuit (22) and a second matching circuit (23); A first feeding branch (111) is provided on the first feeding point (11), and a third feeding branch (411) is provided on the third feeding point (41), the first feeding branch (111) extends toward the side where the middle supporting plate (52) is located, and is electrically connected to the first matching circuit (22), and the third feeding branch (411) extends toward the side where the middle supporting plate (52) is located, and is electrically connected to the second matching circuit (23).

9. The electronic device according to claim 8, characterized in that: The position of the at least one avoidance groove (521) corresponds to the position of the first feeding point (11), and the first feeding branch (111) extends into the at least one avoidance groove (521) and is electrically connected to the first matching circuit (22) in the at least one avoidance groove (521); and / or, The position of the at least one avoidance slot (521) corresponds to the position of the third feeding point (41), and the third feeding branch (411) extends into the at least one avoidance slot (521) and is electrically connected to the second matching circuit (23) in the at least one avoidance slot (521).

10. The electronic device according to claim 8, characterized in that: The middle support plate (52) is provided with a retaining wall structure (53) at the edge facing the first radiation branch node (1) and the second radiation branch node (4), and the two ends of the retaining wall structure (53) extend to the area where the first radiation branch node (1) and the area where the second radiation branch node (4) are located, respectively; At least one avoidance opening (531) is provided on the retaining wall structure (53), and at least one of the first feeding branch node (111), the second feeding branch node (121) and the third feeding branch node (411) extends to the side where the middle support plate (52) is located through the at least one avoidance opening (531).

11. The electronic device according to claim 10, characterized in that: When the first feeding branch node (111), the second feeding branch node (121) or the third feeding branch node (411) is located in the at least one avoidance opening (531), a distance L6 between the first feeding branch node (111), the second feeding branch node (121) or the third feeding branch node (411) and the inner wall of the at least one avoidance opening (531) is in the range of 2-3 mm.

12. The electronic device according to claim 6, characterized in that: The electronic device further comprises a key component (6), wherein the key component (6) is located inside the first radiation branch (1); The key assembly (6) comprises a flexible circuit board (61) and a bracket (62), wherein the bracket (62) is located between the flexible circuit board (61) and the first radiation branch (1), and the bracket (62) is used to support the flexible circuit board (61) in a direction away from the first radiation branch (1); A plurality of key wirings (611) are provided on the surface of the flexible circuit board (61), a bending portion (612) is provided on the key wiring (611), and / or at least one resistance element (613) is provided on the key wiring (611).

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