Antenna components and electronic devices

Abstract

This application provides an antenna assembly and electronic device, belonging to the field of antenna technology. The antenna assembly includes: a first radiator, a second radiator, and a feeding element; the first and second radiators are arranged adjacent to each other; the feeding element is located between the first and second radiators, and is used to couple and feed one of the first and second radiators; the feeding element has a slotted structure, which divides the feeding element into two feeding branches. The antenna assembly of this application, without changing the feeding excitation performance and the main structure, reduces the mutual coupling field between the first and second radiators, thereby improving the isolation between the first and second radiators.

Description

Technical Field

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

[0002] To improve the communication performance of electronic devices, it is usually necessary to arrange multiple antennas inside the electronic device. However, due to the limited internal space of the electronic device, the adjustment space of the antennas is limited, and the isolation between adjacent antennas is a particularly important issue.

[0003] In related technologies, there may be scenarios where the mid-frame antenna is arranged adjacent to an LDS (Laser Direct Structuring) / FPC (Flexible Printed Circuit) antenna. In this case, it is usually necessary to change the routing area of ​​the LDS / FPC antenna to overcome the problem of low isolation. However, this method is prone to affecting the radiation performance of the antenna, and due to the influence of the surrounding metal components, the adjustment space of the routing area is small. Summary of the Invention

[0004] This application provides an antenna assembly and electronic device that can solve the problem of low isolation between the mid-frame antenna and the LDS / FPC antenna.

[0005] The technical solution is as follows:

[0006] On one hand, 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 the feeding unit is used to couple and feed power to one of the first radiator and the second radiator.

[0009] The power supply unit is provided with a gap structure, which is used to divide the power supply unit into two power supply branches.

[0010] In some embodiments, the power supply 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, where 0 < d ≤ 0.3 mm.

[0012] In some embodiments, the slotted structure divides the feed unit into a first feed branch and a second feed branch, the first feed branch and the second feed branch being distributed along a first direction;

[0013] One of the first feed branch and the second feed branch is provided with a first feed 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 gap is located inside the power supply unit and extends along a first direction; the second gap is located at one end of the first gap and extends along a second direction to a first side of the power supply unit; the third gap is located at the other end of the first gap and extends along the second direction to a second side of the power supply unit.

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

[0017] In some embodiments, the second radiator is located on 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 first feed stub has a dimension of a1 along the first direction, the second feed stub has a dimension of a2 along the first direction, and the second radiator has a dimension of L2 along the first direction.

[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 includes a parasitic branch, which is arranged end-to-end with the first radiator at a first end of the first radiator;

[0023] The first radiator has a second power supply point at its second end and a grounding point on its first radiator.

[0024] In some embodiments, the dimension of the first radiator along the first direction is L1, and the distance from the grounding point to the first end is L3, wherein the value of L3 / L1 ranges from 0.44 to 0.84.

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

[0026] In some embodiments, the first radiator is a mid-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, which includes the antenna assembly described in this application.

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

[0029] In the antenna assembly of this 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. By arranging a slit structure on the feeding unit to divide the feeding unit into two feeding branches, the feeding unit can generate opposite electromagnetic effects. Without changing the feeding excitation performance and the main structure, the mutual coupling field between the first radiator and the second radiator is weakened, thereby improving the isolation between the first radiator and the second radiator. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0032] Figure 2 This is a schematic diagram of the power supply unit provided in the embodiments of this application;

[0033] Figure 3 This is a schematic diagram of the structure of an antenna assembly provided in another embodiment of this application;

[0034] Figure 4 This is a diagram illustrating the isolation effect of the antenna assembly provided in the embodiments of this application;

[0035] Figure 5 This is a comparison chart of the radiation efficiency of the second radiator provided in the embodiments of this application and related technologies;

[0036] Figure 6 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application.

[0037] The reference numerals in the figure are respectively:

[0038] 1. First radiator;

[0039] 101. First end; 102. Second end;

[0040] 11. Second feed point;

[0041] 12. Grounding point;

[0042] 2. Second radiator;

[0043] 3. Power supply unit;

[0044] 31. Joint structure; 311. First joint section; 312. Second joint section; 313. Third joint section;

[0045] 32. First power supply branch;

[0046] 33. Second feeder branch;

[0047] 34. First feed point;

[0048] 4. Parasitic branches;

[0049] 100. Metal frame; 200. Plastic bracket. Detailed Implementation

[0050] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0051] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this 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 a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Communication connection" can refer to the transmission of electrical signals, including wireless communication connections and wired communication connections. Wireless communication connections do not require a physical medium and are not a connection relationship that limits the product structure. "Connection" and "connected" can both refer to a mechanical or physical connection relationship, that is, A and B being connected or connected can mean that there are fastening components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0053] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0054] Current mobile phone MIMO communication systems require at least four N77 antennas to ensure reception efficiency, so how to arrange the N77 antennas has become a research topic.

[0055] In related technologies, N77 antennas are typically configured using a mid-frame antenna in conjunction with an LDS / FPC antenna. However, there may be situations where two N77 antennas need to be placed on the same side of the electronic device. In this case, to improve the isolation between the two N77 antennas, the low isolation is usually addressed by changing the routing area of ​​the LDS / FPC antenna. However, due to the influence of surrounding metal components (such as NFC antennas), the adjustment space for the routing area is limited. Therefore, the radiation performance of two N77 antennas placed on the same side is relatively poor.

[0056] Therefore, this application provides an antenna assembly that can reduce the mutual coupling field between two adjacent antennas (e.g., a first radiator and a second radiator) without changing the feed excitation performance and the main structure, thereby improving the isolation between the two adjacent antennas.

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

[0058] The technical solutions provided in this application are applicable to electronic devices employing one or more of the following communication technologies: Bluetooth (BT) communication technology, Global Positioning System (GPS) communication technology, Wireless Fidelity (WiFi) communication technology, Global System for Mobile Communications (GSM) communication technology, Wideband Code Division Multiple Access (WCDMA) communication technology, Long Term Evolution (LTE) communication technology, 5G communication technology, and other future communication technologies.

[0059] The electronic device can be any of a variety of computer system devices that are mobile or portable and perform wireless communication. Specifically, the electronic device can be a mobile phone or smartphone (e.g., an iPhone™-based phone, an Android™-based phone), a portable gaming device (e.g., a Nintendo DS™, a PlayStation Portable™, a Gameboy Advance™, an iPhone™), a laptop computer, a PDA, a portable internet device, a music player, and a data storage device, other handheld devices, and such as headphones. The electronic device can also be other wearable devices that require charging (e.g., head-mounted devices (HMDs) such as electronic bracelets, electronic necklaces, electronic devices, or smartwatches).

[0060] Electronic devices can also be any one of a plurality of electronic devices, including but not limited to cellular phones, smartphones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, other media recorders, radios, medical devices, vehicle transport instruments, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbooks, personal digital assistants (PDAs), portable multimedia players (PMPs), Moving Image 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, electronic devices can perform multiple functions (e.g., playing music, displaying video, storing pictures, and receiving and sending telephone calls). If desired, electronic devices can be such as cellular phones, media players, other handheld devices, wristwatches, pendant devices, handset devices, or other compact portable devices.

[0062] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further 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 feed unit 3.

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

[0065] The power supply unit 3 is provided with a slit structure 31, which is used to divide the power supply unit 3 into two power supply branches.

[0066] In this embodiment of the antenna assembly, 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. By arranging a slit structure 31 on the feeding unit 3 to divide the feeding unit 3 into two feeding branches, the feeding unit 3 can generate opposite electromagnetic effects. Without changing the feeding excitation performance and the main structure, the mutual coupling field between the first radiator 1 and the second radiator 2 is weakened, 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 antennas operating at the same frequency. For example, the first radiator 1 and the second radiator 2 operate in the N77 band, with a frequency range of 3300-4200MHz.

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

[0069] Coupled power supply refers to the conduction of electrical energy between two non-contact but relatively close circuit elements or circuit networks in fields such as communications through coupling.

[0070] In this embodiment, the power supply unit 3 is located between the first radiator 1 and the second radiator 2. The power supply unit 3 can couple power supply one of the two radiators. For example, the power supply unit 3 couples power supply the first radiator 1, or the power supply unit 3 couples power supply the second radiator 2.

[0071] Dividing the feed unit 3 into two feed branches by the gap has little impact on the excitation performance of the feed unit 3, but it can be regarded as adding an inverter (or phase inverter) in the feed unit 3, thereby generating an electromagnetic effect opposite 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 power supply unit 3, the first radiator 1, and the second radiator 2 all extend along a first direction.

[0073] With the above arrangement, the first radiator 1 and the second radiator 2 extend in the same direction, the feeding unit 3 is parallel to the first radiator 1 and the second radiator 2 respectively, the antenna assembly occupies a small lateral space, and 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 gap structure 31 is d, where 0 < d ≤ 0.3 mm. When the width d of the gap structure 31 satisfies this range, the power supply unit 3 has a better effect on reducing 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 can take values ​​such as 0.05mm, 0.08mm, 0.1mm, 0.12mm, 0.15mm, 0.18mm, 0.2mm, 0.22mm, 0.25mm, 0.28mm, 0.3mm, etc. Optionally, the width d of the fracture structure 31 can be 0.1mm.

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

[0077] The feed unit 3 is divided into two parts along the first direction by the gap 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 simultaneously couple and feed the first radiator 1 or the second radiator 2, and at the same time 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 gap portion 311 is located inside the power supply unit 3 and extends along the first direction; the second gap portion 312 is located at one end of the first gap and extends along the second direction to the first side of the power supply unit 3; the third gap portion 313 is located at the other end of the first gap and extends along the second direction to the second side of the power supply unit 3; wherein the first direction and the second direction are perpendicular to each other.

[0080] With the above arrangement, the second slit section 312, the first slit section 311 and the third slit section 313 are connected in sequence, dividing the power supply unit 3 into two parts: the first power supply branch 32 and the second power supply branch 33. This slit structure 31 is beneficial to increasing the coupling length of the first power supply branch 32 and the second power supply branch 33, improving the current direction in the power supply unit 3, and enabling the power supply unit 3 to generate reverse electromagnetic characteristics that weaken the mutual coupling field of the radiators.

[0081] Combination Figure 1 , 2 As shown, in some embodiments, 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.

[0082] The first feed branch 32 has a dimension of a1 along the first direction, the second feed branch 33 has a dimension of a2 along the first direction, and the second radiator 2 has a dimension of L2 along the first direction, wherein the value of a1 / a2 ranges from 1.28 to 1.88.

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

[0084] In some possible implementations, the values ​​of a1 / a2 can be, 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 can be 1.58.

[0085] In some embodiments, the value of (a1+d+a2) / L2 ranges from 0.32 to 0.82.

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

[0087] In some possible implementations, the value of (a1+d+a2) / L2 can be, 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 can be 0.52.

[0088] In some possible implementations, the dimension a1 of the first feed stub 32 along the first direction ranges from 5.9 to 9.9 mm. For example, the value of a1 may be 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 may be 7.9 mm.

[0089] In some possible implementations, the dimension a2 of the second feed stub 33 along the first direction ranges from 3 to 7 mm. For example, the value of a2 may be 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 may be 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. For example, the value of L2 may be 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 may be 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; the second end 102 of the first radiator 1 is provided with a second feed point 11, and the first radiator 1 is also provided with a grounding point 12.

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

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

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

[0095] In some possible implementations, the value of L3 / L1 can be, for example, 0.44, 0.54, 0.64, 0.74, 0.84, etc. Optionally, the value of L3 / L1 can be 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 of L4 / L1 ranges from 0.25 to 0.45.

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

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

[0099] In some embodiments, the first radiator 1 is a mid-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 mid-frame antenna is designed by using the metal frame of electronic devices to give a part of the metal mid-frame a characteristic shape, which can be used as part of the antenna to radiate.

[0101] LDS antenna technology, or Laser-Direct-Structured, uses a computer to control the movement of a laser along a conductive pattern, projecting the laser onto a molded three-dimensional plastic device. Within seconds, a circuit pattern is activated. For example, a metal antenna pattern can be directly deposited onto a molded plastic support using laser engraving technology.

[0102] PCB antennas are constructed based on the circuitry on a printed circuit board (PCB). They integrate the communication circuitry and the antenna onto the same board, allowing for seamless integration between the antenna and other circuitry on the board, resulting in relatively low manufacturing costs. The advantages of PCB antennas include high cost-effectiveness, ease of design, and a high degree of design flexibility.

[0103] FPC antennas are antennas made of flexible printed circuit boards (FPCs). Compared to the circuit lines on ordinary PCBs, the lines of FPC antennas can be bent and can withstand different degrees of bending. The advantages of FPC antennas are their relative flexibility, light weight, good mechanical properties, and reliable electrical performance.

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

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

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

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

[0108] In some possible implementations, the terminal device may include radio frequency (RF) circuitry, 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, among other components.

[0109] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0110] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this application.

[0111] The above description is merely an embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. An antenna assembly, characterized by 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 adjacently; 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 feeding for one of the first radiator (1) and the second radiator (2); The feeding unit (3) is provided with a slit structure (31), and the slit structure (31) is used for dividing the feeding unit (3) into two feeding branches.

2. The antenna assembly of claim 1, wherein, The feeding unit (3), the first radiator (1) and the second radiator (2) all extend along a first direction.

3. The antenna assembly of claim 1, wherein, The width of the slit structure (31) is d, wherein 0 < d ≤ 0.3 mm.

4. The antenna assembly of claim 1, wherein, The slit 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 the 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 of claim 4, wherein, The slit structure (31) comprises a first slit part (311), a second slit part (312) and a third slit part (313); The first slit part (311) is located inside the feeding unit (3) and extends along a first direction, the second slit part (312) is located at one end of the first slit part (311) and extends to a first side of the feeding unit (3) along a second direction, and the third slit part (313) is located at the other end of the first slit part (311) and extends to a second side of the feeding unit (3) along the second direction; Wherein, the first direction and the second direction are perpendicular to each other.

6. The antenna assembly of claim 5, wherein, 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 for coupling feeding for 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, the size of the second radiator (2) along the first direction is L2, and the width of the slit structure (31) is d, 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 of claim 1, wherein, The antenna assembly further comprises a parasitic branch (4), which is arranged at a first end (101) of the first radiator (1) in an end-to-end manner with the first radiator (1); A second feeding point (11) is arranged at a second end (102) of the first radiator (1), and a grounding point (12) is further arranged on the first radiator (1).

8. The antenna assembly of claim 7, wherein, 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 of claim 8, wherein, The parasitic branch (4) has a dimension L4 in the first direction, wherein L4 / L1 is in a range of 0.25-0.

45.

10. The antenna assembly of any one of claims 1 to 9, wherein, 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, comprising: The electronic device comprises the antenna assembly of any one of claims 1-10.

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