Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment, and belongs to the technical field of antennas. The antenna assembly comprises a first radiator, a second radiator and a feed unit. The first radiator and the second radiator are arranged adjacently; the feed unit is located between the first radiator and the second radiator, and the feed unit is used for coupling and feeding one of the first radiator and the second radiator; the feed unit is provided with a breaking joint structure, and the breaking joint structure is used for dividing the feed unit into two feed branches. According to the antenna assembly, under the condition that the feed excitation performance and the main body structure are not changed, the mutual coupling field between the first radiating body and the second radiating body is weakened, and therefore the isolation degree between the first radiating body and the second radiating body is improved.

Description

Technical Field

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

[0002] In order to improve the communication performance of electronic devices, it is usually necessary to arrange multiple antennas inside the electronic devices. However, due to the limited internal space of the electronic devices and the limited adjustment space of the antennas, the isolation between adjacent antennas is a problem that requires special attention.

[0003] In the related technology, there may be a scenario where the middle frame antenna and the LDS (Laser Direct Structuring) / FPC (Flexible Printed Circuit) antenna are arranged adjacent to each other. At this time, it is usually necessary to change the routing area of ​​the LDS / FPC antenna to overcome the problem of low isolation. However, such a method is likely to affect the radiation performance of the antenna, and due to the influence of metal devices in the surrounding area, the adjustment space of the routing area is small. Summary of the invention

[0004] The present application provides an antenna assembly and an electronic device, which can solve the problem of low isolation between a middle frame antenna and an LDS / FPC antenna.

[0005] The technical solution is as follows:

[0006] In one aspect, an antenna assembly is provided, the antenna assembly comprising: a first radiator, a second radiator and a feeding unit;

[0007] The first radiator and the second radiator are arranged adjacent to each other;

[0008] The feeding unit is located between the first radiator and the second radiator, and is used for coupling and feeding one of the first radiator and the second radiator;

[0009] The feed unit is provided with a break structure, and the break structure is used to divide the feed unit into two feed branches.

[0010] In some embodiments, the feeding unit, the first radiator, and the second radiator all extend along a first direction.

[0011] In some embodiments, the width of the fracture structure is d, wherein 0<d≤0.3 mm.

[0012] In some embodiments, the fracture structure divides the feeding unit into a first feeding branch and a second feeding branch, and the first feeding branch and the second feeding branch are distributed along a first direction;

[0013] One of the first feeding branch and the second feeding branch is provided with a first feeding point.

[0014] In some embodiments, the fracture structure includes a first fracture portion, a second fracture portion, and a third fracture portion;

[0015] The first slit portion is located inside the feed unit and extends along a first direction, the second slit portion is located at one end of the first slit and extends to a first side of the feed unit along a second direction, and the third slit portion is located at the other end of the first slit and extends to a second side of the feed unit along the second direction;

[0016] The first direction and the second direction are perpendicular to each other.

[0017] In some embodiments, the second radiator is located at the side where the second side of the feeding unit is located, and the feeding unit is used to couple and feed the second radiator;

[0018] The size of the first feeding branch along the first direction is a1, the size of the second feeding branch along the first direction is a2, and the size of the second radiator along the first direction is L2, wherein,

[0019] The value range of a1 / a2 is 1.28-1.88;

[0020] and / or,

[0021] The value range of (a1+d+a2) / L2 is 0.32-0.82.

[0022] In some embodiments, the antenna assembly further comprises a parasitic branch, wherein the parasitic branch is arranged end-to-end with the first radiator at the first end of the first radiator;

[0023] A second feeding point is provided at the second end of the first radiator, and a grounding point is also provided on the first radiator.

[0024] In some embodiments, a size of the first radiator along the first direction is L1, and a distance from the ground point to the first end is L3, wherein a value range of L3 / L1 is 0.44-0.84.

[0025] In some embodiments, the size of the parasitic branch along the first direction is L4, wherein the value range of L4 / L1 is 0.25-0.45.

[0026] In some embodiments, the first radiator is a middle frame antenna, and the second radiator is at least one of an LDS antenna and an FPC antenna.

[0027] On the other hand, an electronic device is provided, wherein the electronic device includes the antenna assembly described in the present application.

[0028] The beneficial effects of the technical solution provided by this application include at least:

[0029] In the antenna assembly of the present application, a first radiator and a second radiator are arranged adjacent to each other, one of the radiators is coupled and fed by a feeding unit, and a slit structure is arranged on the feeding unit to divide the feeding unit into two feeding branches, so that the feeding unit can produce opposite electromagnetic influences, and the mutual coupling field between the first radiator and the second radiator is weakened without changing the feeding excitation performance and the main structure, thereby improving the isolation between the first radiator and the second radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 is a schematic diagram of the structure of an antenna assembly provided in an embodiment of the present application;

[0032] Figure 2 is a schematic structural diagram of a feeding unit provided in an embodiment of the present application;

[0033] Figure 3 is a structural schematic diagram of an antenna assembly provided by another embodiment of the present application;

[0034] Figure 4 is an isolation effect diagram of the antenna assembly provided in an embodiment of the present application;

[0035] Figure 5 is a comparison diagram of the radiation efficiency of the second radiator provided in the embodiment of the present application and the related art;

[0036] Figure 6 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0037] The reference numerals in the figures represent respectively:

[0038] 1. The first radiator;

[0039] 101, first end; 102, second end;

[0040] 11. Second feeding point;

[0041] 12. Grounding point;

[0042] 2. The second radiator;

[0043] 3. Feed unit;

[0044] 31. Break structure; 311. First break portion; 312. Second break portion; 313. Third break portion;

[0045] 32. The first feeding branch;

[0046] 33. The second feeding branch;

[0047] 34. First feeding point;

[0048] 4. Parasitic branches;

[0049] 100, metal middle frame; 200, plastic bracket. DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] The current MIMO communication system of mobile phones requires at least four N77 antennas to ensure reception efficiency, so how to arrange the N77 antennas has become a topic that needs to be studied.

[0055] In the related art, the middle frame antenna is usually used in conjunction with the LDS / FPC antenna for N77 antenna configuration, but there may also be a solution where two N77 antennas need to be placed on the same side of the electronic device. In order to improve the isolation of the two N77 antennas, the low isolation problem is usually solved by changing the routing area of ​​the LDS / FPC antenna. However, due to the influence of metal devices in the surrounding area (such as NFC antennas), there is less room for adjustment of the routing area. Therefore, the radiation performance of the two N77 antennas placed on the same side is poor.

[0056] Therefore, the present application provides an antenna assembly that can weaken the mutual coupling field between two adjacent antennas (such as a first radiator and a second radiator) without changing the feeding excitation performance and the main body structure, thereby improving the isolation between the two adjacent antennas.

[0057] This helps solve the problem that the two N77 antennas are arranged on the same side with low isolation, which affects the antenna radiation performance. It should be noted that the technical solution provided by this application is not only applicable to the same-side arrangement scenario of N77 antennas, but also to the adjacent arrangement scenario between the same-frequency antennas or different-frequency antennas in any frequency band.

[0058] The technical solution provided in this application is applicable to electronic devices that adopt one or more of the following communication technologies: Bluetooth (Blue Tooth, BT) communication technology, Global Positioning System (Global Positioning System, GPS) communication technology, Wireless Fidelity (Wireless Fidelity, WiFi) communication technology, Global System For mobile communications (Global System For mobile Communications, GSM) communication technology, Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) communication technology, Long Term Evolution (Long Term Evolution, LTE) communication technology, 5G communication technology and other future communication technologies.

[0059] 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., Nintendo DS 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).

[0060] 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.

[0061] 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.

[0062] 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.

[0063] On the one hand, combined with Figure 1 As shown, the antenna assembly includes: a first radiator 1 , a second radiator 2 and a feeding unit 3 .

[0064] The first radiator 1 and the second radiator 2 are arranged adjacent to each other; the feeding unit 3 is located between the first radiator 1 and the second radiator 2 , and the feeding unit 3 is used for coupling and feeding one of the first radiator 1 and the second radiator 2 .

[0065] The feed unit 3 is provided with a fracture structure 31, and the fracture structure 31 is used to divide the feed unit 3 into two feed branches.

[0066] In the antenna assembly of this embodiment, the first radiator 1 and the second radiator 2 are arranged adjacent to each other, one of the radiators is coupled and fed by a feeding unit 3, and the feeding unit 3 is divided into two feeding branches by arranging a slit structure 31 on the feeding unit 3, so that the feeding unit 3 can produce opposite electromagnetic influences, and the mutual coupling field between the first radiator 1 and the second radiator 2 is weakened without changing the feeding excitation performance and the main structure, thereby improving the isolation between the first radiator 1 and the second radiator 2.

[0067] In some possible implementations, the first radiator 1 and the second radiator 2 are co-frequency antennas. Exemplarily, the operating frequency band of the first radiator 1 and the second radiator 2 is the N77 frequency band, and the frequency range is 3300-4200Mhz.

[0068] In some other possible implementations, the first radiator 1 and the second radiator 2 are different-frequency antennas.

[0069] Among them, coupled feeding refers to the conduction of electrical energy by coupling between two circuit elements or circuit networks that are not in contact but have a certain small distance in the fields of communications and the like.

[0070] In this embodiment, the feeding unit 3 is located between the first radiator 1 and the second radiator 2 , and the feeding unit 3 can couple and feed one of the two radiators, for example, the feeding unit 3 couples and feeds the first radiator 1 , or the feeding unit 3 couples and feeds the second radiator 2 .

[0071] The feed unit 3 is divided into two feed branches by a break, which has little effect on the excitation performance of the feed unit 3, but can be regarded as adding an inverter (or inverter) in the feed unit 3, thereby generating an electromagnetic effect in the opposite direction to the mutual coupling effect of the two radiators. This electromagnetic effect can be used to weaken the mutual coupling field between the first radiator 1 and the second radiator 2, thereby improving the isolation between the first radiator 1 and the second radiator 2.

[0072] Combination Figure 1 As shown, in some embodiments, the feeding unit 3, the first radiator 1 and the second radiator 2 all extend along the first direction.

[0073] Through the above arrangement, the first radiator 1 and the second radiator 2 have the same extension direction, the feeding unit 3 is parallel to the first radiator 1 and the second radiator 2 respectively, and the antenna assembly occupies a small lateral space, which is suitable for arranging the first radiator 1 and the second radiator 2 on the same side of the electronic device.

[0074] Combination Figure 1 As shown, in some embodiments, the width of the fracture structure 31 is d, where 0<d≤0.3mm. When the width d of the fracture structure 31 satisfies this value range, the feeding unit 3 has a better effect of weakening the mutual coupling field between the first radiator 1 and the second radiator 2.

[0075] In some possible implementations, the width d of the fracture structure 31 is, for example, 0.05 mm, 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.22 mm, 0.25 mm, 0.28 mm, 0.3 mm, etc. Optionally, the width d of the fracture structure 31 is 0.1 mm.

[0076] Combination Figure 2 As shown, in some embodiments, the fracture structure 31 divides the feeding unit 3 into a first feeding branch 32 and a second feeding branch 33, and the first feeding branch 32 and the second feeding branch 33 are distributed along a first direction; one of the first feeding branch 32 and the second feeding branch 33 is provided with a first feeding point 34.

[0077] The feed unit 3 is divided into two parts along the first direction by using the fracture structure 31, namely the first feed branch 32 and the second feed branch 33, and the first feed point 34 is arranged on the first feed branch 32 or the second feed branch 33. When the first feed point 34 is electrically connected to the feed source, the first feed branch 32 and the second feed branch 33 can couple and feed the first radiator 1 or the second radiator 2 at the same time, and generate reverse electromagnetic characteristics that weaken the mutual coupling field of the radiators.

[0078] Combination Figure 2As shown, in some embodiments, the fracture structure 31 includes a first fracture portion 311 , a second fracture portion 312 and a third fracture portion 313 .

[0079] The first break portion 311 is located inside the feed unit 3 and extends along the first direction, the second break portion 312 is located at one end of the first break and extends to the first side of the feed unit 3 along the second direction, and the third break portion 313 is located at the other end of the first break and extends to the second side of the feed unit 3 along the second direction; wherein the first direction and the second direction are perpendicular to each other.

[0080] Through the above arrangement, the second break portion 312, the first break portion 311 and the third break portion 313 are connected in sequence to divide the feed unit 3 into two parts, the first feed branch 32 and the second feed branch 33. This break structure 31 is beneficial to increase the coupling length of the first feed branch 32 and the second feed branch 33, improve the current direction in the feed unit 3, and enable the feed unit 3 to generate reverse electromagnetic characteristics that weaken the mutual coupling field of the radiator.

[0081] Combination Figure 1 , 2 As shown, in some embodiments, the second radiator 2 is located at the side where the second side of the feeding unit 3 is located, and the feeding unit 3 is used for coupling and feeding the second radiator 2 .

[0082] The size of the first feeding branch 32 along the first direction is a1, the size of the second feeding branch 33 along the first direction is a2, and the size of the second radiator 2 along the first direction is L2, wherein the value range of a1 / a2 is 1.28-1.88.

[0083] When the dimensions of the first feeding branch 32 and the second ground feeding branch along the first direction meet the above value range, it can ensure that the mutual coupling field between the first radiator 1 and the second radiator 2 is weakened and the isolation between the first radiator 1 and the second radiator 2 is improved without changing the feeding excitation performance and the main structure.

[0084] In some possible implementations, the value of a1 / a2 is, for example, 1.28, 1.30, 1.38, 1.40, 1.48, 1.50, 1.58, 1.60, 1.68, 1.70, 1.78, 1.80, 1.88, etc. Optionally, the value of a1 / a2 is 1.58.

[0085] In some embodiments, the value range of (a1+d+a2) / L2 is 0.32-0.82.

[0086] When the dimensions of the first feeding branch 32, the second ground feeding branch, the fracture structure 31 and the second radiator 2 along the first direction meet the above-mentioned value range, it can ensure that the mutual coupling field between the first radiator 1 and the second radiator 2 is weakened and the isolation between the first radiator 1 and the second radiator 2 is improved without changing the feeding excitation performance and the main structure.

[0087] In some possible implementations, the value of (a1+d+a2) / L2 is, for example, 0.32, 0.35, 0.40, 0.45, 0.50, 0.52, 0.60, 0.62, 0.70, 0.72, 0.80, 0.82, etc. Optionally, the value of (a1+d+a2) / L2 is 0.52.

[0088] In some possible implementations, the dimension a1 of the first feeding branch 32 along the first direction ranges from 5.9 to 9.9 mm. For example, the value of a1 is 5.9 mm, 6.5 mm, 6.9 mm, 7.5 mm, 7.9 mm, 8.5 mm, 8.9 mm, 9.5 mm, 9.9 mm, etc. Optionally, the value of a1 is 7.9 mm.

[0089] In some possible implementations, the dimension a2 of the second feeding branch 33 along the first direction ranges from 3 to 7 mm. For example, the value of a2 is 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, etc. Optionally, the value of a2 is 5 mm.

[0090] In some possible implementations, the dimension L2 of the second radiator 2 along the first direction ranges from 20 to 30 mm. Exemplarily, the value of L2 is, for example, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 25.1 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, etc. Optionally, the value of L2 is 25.1 mm.

[0091] Combination Figure 3 As shown, in some embodiments, the antenna assembly further includes a parasitic branch 4, which is arranged end-to-end with the first radiator 1 at the first end 101 of the first radiator 1; a second feeding point 11 is provided at the second end 102 of the first radiator 1, and a grounding point 12 is also provided on the first radiator 1.

[0092] By arranging the parasitic branch 4 at the first end 101 of the first radiator 1 , the radiation performance of the first radiator 1 can be improved, and the communication capability of the antenna assembly can be improved.

[0093] Combination Figure 3As shown, in some embodiments, the size of the first radiator 1 along the first direction is L1, and the distance from the ground point 12 to the first end 101 is L3, wherein the value range of L3 / L1 is 0.44-0.84.

[0094] When the size of the first radiator 1 along the first direction satisfies the above value range, the first radiator 1 can have the radiation capability of the target frequency band and meet the frequency requirement of the antenna assembly.

[0095] In some possible implementations, the value of L3 / L1 is, for example, 0.44, 0.54, 0.64, 0.74, 0.84, etc. Optionally, the value of L3 / L1 is 0.64.

[0096] Combination Figure 3 As shown, in some embodiments, the size of the parasitic branch 4 along the first direction is L4, wherein the value range of L4 / L1 is 0.25-0.45.

[0097] When the size of the parasitic branch 4 along the first direction satisfies the above value range, the radiation efficiency of the first radiator 1 is better.

[0098] In some possible implementations, the value of L4 / L1 is, for example, 0.25, 0.3, 0.35, 0.4, 0.45, etc. Optionally, the value of L4 / L1 is 0.35.

[0099] In some embodiments, the first radiator 1 is a middle frame antenna, and the second radiator 2 is at least one of an LDS antenna, a PCB antenna, and an FPC antenna.

[0100] Among them, the middle frame antenna is designed by designing the metal frame of the electronic device so that a part of the metal middle frame has a characteristic shape and can radiate as a part of the antenna.

[0101] LDS antenna technology is laser direct structuring technology, which uses a computer to control the movement of the laser according to the trajectory of the conductive pattern, and projects the laser onto the molded three-dimensional plastic device to activate the circuit pattern within a few seconds. For example, on a molded plastic bracket, a metal antenna pattern is formed by direct chemical plating on the bracket using laser technology.

[0102] PCB antenna is based on the circuit on the printed circuit board (PCB). It puts the communication circuit and antenna on the same board, realizing seamless connection between the antenna and other circuits on the board, so its production cost is relatively low. The advantages of PCB antenna include high cost performance, easy design and greater freedom.

[0103] FPC antenna is the antenna of flexible printed circuit (FPC). Compared with the circuit line of ordinary PCB board, the line of FPC antenna can be bent and can withstand different types of curvature. The advantages of FPC antenna are relatively flexible, light weight, good mechanical properties and reliable electrical performance.

[0104] refer to Figure 4 , 5 As shown, the first radiator 1 and the second radiator 2 in the antenna assembly of this embodiment have a high degree of isolation within the N77 frequency band, and the antenna assembly of this embodiment has a better radiation efficiency within the N77 frequency band than that of the related art.

[0105] On the other hand, combined Figure 6 As shown, this embodiment provides an electronic device, and the electronic device includes the antenna assembly of the present application.

[0106] The electronic device of this embodiment adopts the antenna assembly of the present application and has all the beneficial technical effects of all the embodiments herein.

[0107] In some possible implementations, the electronic device further includes a metal middle frame 100 and an internal plastic bracket 200 , a portion of the metal middle frame 100 is formed into a first radiator 1 and a parasitic branch 4 , and the second radiator 2 is located on the plastic bracket 200 .

[0108] In some possible implementations, the terminal device may include a radio frequency (RF) circuit, a memory including one or more computer-readable storage media, an input unit, a display unit, a sensor, an audio circuit, a Wi-Fi module, a processor including one or more processing cores, and a power supply and other components.

[0109] It should be noted that 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.

[0110] 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.

[0111] 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 assembly, characterized in that: The antenna assembly comprises: a first radiator (1), a second radiator (2) and a feeding unit (3); The first radiator (1) and the second radiator (2) are arranged adjacent to each other; The feeding unit (3) is located between the first radiator (1) and the second radiator (2), and the feeding unit (3) is used to couple and feed one of the first radiator (1) and the second radiator (2); The feeding unit (3) is provided with a fracture structure (31), and the fracture structure (31) is used to divide the feeding unit (3) into two feeding branches.

2. The antenna assembly according to claim 1, characterized in that: The feeding unit (3), the first radiator (1) and the second radiator (2) all extend along a first direction.

3. The antenna assembly according to claim 1, characterized in that: The width of the fracture structure (31) is d, wherein 0<d≤0.3 mm.

4. The antenna assembly according to claim 1, characterized in that: The fracture structure (31) divides the feeding unit (3) into a first feeding branch node (32) and a second feeding branch node (33), and the first feeding branch node (32) and the second feeding branch node (33) are distributed along a first direction; One of the first feeding branch (32) and the second feeding branch (33) is provided with a first feeding point (34).

5. The antenna assembly according to any one of claims 1 to 4, characterized in that: The fracture structure (31) comprises a first fracture portion (311), a second fracture portion (312) and a third fracture portion (313); The first slit portion (311) is located inside the feed unit (3) and extends along a first direction; the second slit portion (312) is located at one end of the first slit portion (311) and extends along a second direction to a first side of the feed unit (3); and the third slit portion (313) is located at the other end of the first slit portion (311) and extends along the second direction to a second side of the feed unit (3); The first direction and the second direction are perpendicular to each other.

6. The antenna assembly according to claim 5, characterized in that: The second radiator (2) is located on the side where the second side of the feeding unit (3) is located, and the feeding unit (3) is used to couple and feed the second radiator (2); The size of the first feeding branch (32) along the first direction is a1, the size of the second feeding branch (33) along the first direction is a2, and the size of the second radiator (2) along the first direction is L2, wherein: The value range of a1 / a2 is 1.28-1.88; and / or, The value range of (a1+d+a2) / L2 is 0.32-0.

82.

7. The antenna assembly according to any one of claims 1 to 6, characterized in that: The antenna assembly further comprises a parasitic branch (4), wherein the parasitic branch (4) and the first radiator (1) are arranged end-to-end at a first end (101) of the first radiator (1); A second feeding point (11) is provided at the second end (102) of the first radiator (1), and a grounding point (12) is also provided on the first radiator (1).

8. The antenna assembly according to claim 7, characterized in that: The size of the first radiator (1) along the first direction is L1, and the distance from the grounding point (12) to the first end (101) is L3, wherein the value range of L3 / L1 is 0.44-0.

84.

9. The antenna assembly according to claim 8, characterized in that: The dimension of the parasitic branch (4) along the first direction is L4, wherein the value range of L4 / L1 is 0.25-0.

45.

10. The antenna assembly according to any one of claims 1 to 9, characterized in that: The first radiator (1) is a middle frame antenna, and the second radiator (2) is at least one of an LDS antenna and an FPC antenna.

11. An electronic device, characterized in that: The electronic device comprises the antenna assembly according to any one of claims 1 to 10.

Images