An antenna assembly and an electronic device

Abstract

The present invention provides an antenna assembly and an electronic device, wherein the antenna assembly comprises: a plurality of antenna units, wherein adjacent antenna units are spaced apart in a first direction; coupling patches, which are arranged in a one-to-one correspondence with the antenna units, and wherein two adjacent coupling patches are spaced apart in the first direction; and a lumped element, which connects two adjacent coupling patches in the first direction and is used to change the phase of a current passing through a gap between adjacent coupling patches.

Description

Technical Field

[0001] The present invention belongs to the field of antenna technology, and more specifically, relates to an antenna assembly and electronic equipment. Background Art

[0002] With the popularization of 5G (fifth-generation mobile networks) technology, new operating frequency bands such as n78 / 79 have been added to the communications of electronic devices, and the number of antennas has reached more than 10. Due to the limited design space of the terminal, the distance between antennas is small, resulting in reduced isolation between antennas. Summary of the Invention

[0003] In view of this, the present invention provides an antenna and an electronic device to solve the technical problem of how to improve the isolation between antennas.

[0004] The technical solution of the present invention is achieved as follows:

[0005] An embodiment of the present invention provides an antenna assembly, comprising: a plurality of antenna units, adjacent antenna units being spaced apart in a first direction; coupling patches, arranged in a one-to-one correspondence with the antenna units, with two adjacent coupling patches spaced apart in the first direction; and a lumped element, connecting two adjacent coupling patches in the first direction, for changing the phase of a current passing through a gap between adjacent coupling patches.

[0006] An embodiment of the present invention further provides an electronic device, comprising: an antenna assembly according to any one of the above items.

[0007] An embodiment of the present invention provides an antenna assembly and electronic device. The antenna assembly includes multiple antenna units, coupling patches, and lumped elements. Adjacent antenna units are spaced apart in a first direction, the coupling patches are arranged in a one-to-one correspondence with the antenna units, and the lumped element connects adjacent coupling patches. In this embodiment of the present invention, a coupling patch is loaded between two adjacent antenna units, and a lumped element is loaded between the coupling patches. The coupling patches increase the transmission path of the coupling current between adjacent antenna units, and the lumped element changes the phase of the coupling current flowing through adjacent coupling patches, so that the anti-phase coupling current on the coupling patches and the original coupling current between adjacent antenna units cancel each other out, thereby achieving a decoupling effect. The structure is simple and compact, and the isolation between antenna units is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1a is a perspective view of an antenna assembly according to an embodiment of the present invention;

[0009] Figure 1b is an enlarged view of an antenna assembly according to another embodiment of the present invention;

[0010] Figure 2 It is a left side view of an antenna assembly according to one embodiment of the present invention;

[0011] Figure 3 is a front view of an antenna assembly according to an embodiment of the present invention;

[0012] Figure 4 1 is a diagram showing simulation results of S parameters of an antenna assembly according to an embodiment of the present invention;

[0013] Figure 5 The XOY plane radiation pattern of the antenna assembly of the embodiment of the present invention is simulated;

[0014] Figure 6 : is the radiation pattern of the XOZ plane of the antenna assembly of the embodiment of the present invention;

[0015] Figure 7 The YOZ plane radiation pattern of the antenna assembly of the embodiment of the present invention is simulated;

[0016] Figure 8 3D simulation result pattern of the antenna assembly according to an embodiment of the present invention;

[0017] Figure 9 4 is a simulation diagram of the current distribution of the antenna assembly according to an embodiment of the present invention.

[0018] Description of reference numerals:

[0019] 1. Antenna unit; 2. Coupling patch; 3. Lumped element; 4. First dielectric plate; 41. First surface; 42. Second surface; 5. Second dielectric plate; 51. Third surface; 52. Fourth surface; 6. Metal floor; 7. Radiating unit; 8. Feeding unit; 81. Feeding branch; 82. Feeding microstrip line; 83. Feeding point; 9. Grounding branch. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The various specific technical features described in the specific embodiments may be combined in any suitable manner, unless they are inconsistent. For example, different embodiments and technical solutions may be formed by combining different specific technical features. To avoid unnecessary repetition, the various possible combinations of the specific technical features in the present invention will not be described separately.

[0022] In the following description, the terms "first\second\..." involved are merely used to distinguish different objects and do not indicate that there is any similarity or connection between the objects. It should be noted that the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. "Multiple" means greater than or equal to two.

[0023] An embodiment of the present invention provides an antenna assembly, such as Figure 1b As shown, the antenna assembly includes multiple antenna units 1, coupling patches 2 and lumped elements 3. The adjacent antenna units are spaced apart in a first direction ( Figure 1a The antenna units are spaced apart in the x-direction as shown, wherein adjacent antenna units are coupled to each other. It should be noted that the antenna unit can effectively radiate electromagnetic waves in a specific direction in space or can effectively receive electromagnetic waves in a specific direction in space. Due to the size limitation of electronic equipment, the number of antenna units is increased. When the distance between multiple antenna units is close, near-field coupling will occur between adjacent antenna units, and the antenna unit can receive the signal of the adjacent antenna unit, that is, the isolation between two adjacent antenna units is reduced. In the embodiment of the present invention, the operating frequency of the antenna can be adjusted by adjusting the size of the antenna. Good isolation is mainly measured by the transmission coefficient. The smaller the transmission coefficient, the higher the isolation, so that the MIMO (Multiple-Input Multiple-Output, multiple-input multiple-output system) antenna can exhibit good isolation within the operating frequency band.

[0024] like Figure 1b As shown, the coupling patches 2 are arranged in a one-to-one correspondence with the antenna units 1, and the distance between two adjacent coupling patches 2 in the first direction ( Figure 1aThe coupling patch 2 is arranged at intervals in the x-direction as shown, wherein the coupling patch 2 can be set as a metal patch. The lumped element 3 extends in the first direction, and is used to connect two adjacent coupling patches 2. Wherein, the coupling patch 2 in the embodiment of the present invention is arranged corresponding to the antenna unit 1, and is used to increase the transmission path of the coupling current between adjacent antenna units, thereby improving the isolation of adjacent antenna units. The embodiment of the present invention can change the coupling frequency of the coupling current transmitted to the coupling patch by adjusting the size parameters of the coupling patch, wherein the size parameters of the coupling patch include the length of the coupling patch and the width of the coupling patch. The larger the size of the coupling patch, the lower the frequency of the coupling frequency on the coupling patch. The embodiment of the present invention adjusts the size parameters of the coupling patch to adjust the coupling frequency of the coupling current flowing through the coupling patch, so that the coupling frequency corresponds to the operating frequency of the adjacent antenna.

[0025] In an embodiment of the present invention, a lumped element 3 is loaded between two coupling patches 2. The lumped element 3 is used to change the phase of the coupling current passing through the gap between adjacent coupling patches 2. The embodiment of the present invention can also adjust the coupling frequency of the coupling current flowing through the coupling patch by changing the reactance of the lumped element. As the reactance of the lumped element increases, the transmission coefficient zero point (decoupling frequency point) moves toward a low frequency. When the antenna unit is in operation, the antenna unit can radiate electromagnetic waves in a characteristic direction in space, and the antenna unit can receive the electromagnetic waves radiated by the adjacent antenna unit to form an original coupling current. In this process, the coupling patch arranged opposite to the antenna unit can also receive the electromagnetic waves radiated by the antenna unit and convert the electromagnetic waves into a coupling current on the coupling patch. The lumped element is loaded on the two coupling patches. The lumped element can change the phase of the coupling current flowing between the coupling patches to obtain an anti-phase coupling current. The original coupling current and the anti-phase coupling current can be superimposed to achieve cancellation, thereby achieving a decoupling effect.

[0026] It should be noted that the embodiments of the present invention do not limit the type of lumped components. Lumped components can be lumped inductors, lumped capacitors, or other lumped components, as long as the coupling frequency can be adjusted by changing the reactance of the lumped components. Lumped components are a general term for all components whose size is significantly smaller than the wavelength relative to the circuit's operating frequency.

[0027] The embodiments of the present invention implement a decoupling system by placing a coupling patch between two adjacent antenna elements and a lumped element between the coupling patches. The coupling patch increases the transmission path for the coupling current between adjacent antenna elements, and the lumped element alters the phase of the coupling current flowing through the adjacent coupling patches, causing the anti-phase coupling current in the coupling patch to cancel out the original coupling current between the adjacent antenna elements. This results in a simple and compact structure and improves isolation between the antenna elements. Furthermore, in compact antenna layouts, the design size of the coupling patch is limited. By adding lumped elements, this size restriction is eliminated, allowing even smaller coupling patches to achieve good coupling.

[0028] In some embodiments, the lumped element is configured as a lumped inductor, wherein loading the lumped inductor on the coupling patch can effectively reduce the inductance value of the lumped inductor. When the inductance value of the lumped inductor is reduced, the self-resonant frequency of the lumped inductor is higher, which is conducive to designing the self-resonant frequency of the lumped inductor to be much higher than the operating frequency of the antenna unit, thereby reducing the difficulty of processing implementation.

[0029] In some embodiments, combined Figure 1a and Figure 1b As shown, the antenna assembly further includes a first dielectric plate 4 and a second dielectric plate 5. The first dielectric plate 4 and the second dielectric plate 5 can be set as FR4 dielectric plates. The FR4 plate is a double-sided copper-clad PCB plate made by laminating epoxy resin and glass cloth. The first dielectric plate 4 and the second dielectric plate 5 are used to set the antenna unit 1, the coupling patch 2 and the lumped element 3. The first dielectric plate 4 and the second dielectric plate 5 can both be thin plates and can be approximately regarded as two-dimensional planes. Their length directions are both the first direction ( Figure 1a The z direction is shown in FIG), and the width direction can be defined as the extension direction of the first dielectric plate 4 and the second dielectric plate 5; Figure 1a As shown, the first dielectric plate 4 is arranged along the second direction ( Figure 1a The second dielectric plate 5 extends in the third direction ( z direction shown), at least part of each antenna unit 1 and the coupling patch 2 are arranged on the first dielectric plate 4, and the second direction is perpendicular to the first direction. Figure 1a The lumped element 3 is disposed on the second dielectric plate 5, and the third direction is perpendicular to both the first and second directions. It should be noted that the positional relationship between the first and second dielectric plates includes a substantially perpendicular relationship. Substantially perpendicular refers to the situation where the angle between the extension direction of the first and second dielectric plates is not strictly 90 degrees. It can be considered that the angle between the two directions is greater than 80 degrees, thus accounting for processing and installation errors.

[0030] In some embodiments, as Figure 2As shown, the first dielectric plate 4 has a first surface 41 and a second surface 42 that are arranged opposite to each other. That is, the first dielectric plate 4 is disposed in the third direction ( Figure 2 The first surface 41 is provided on one side of the first dielectric plate 4 in the third direction ( Figure 2 The second surface 42 is provided on the other side of the first dielectric plate 4 in the third direction ( Figure 2 The second dielectric plate 5 is on the left side of the first dielectric plate shown in FIG. Figure 2 The coupling patch 2 extends in the y-direction (as shown) to the first surface 41. The first surface 41 is closer to the second dielectric plate 5 than the second surface 42. The coupling patch 2 is disposed in contact with the first surface 41, that is, between the first surface 41 and the second dielectric plate 5. By disposing the coupling patch on the first surface of the first dielectric plate, the embodiment of the present invention not only enables transmission between adjacent antenna units but also has a compact structure, thereby reducing the size of the terminal device.

[0031] In some embodiments, combined Figure 2 As shown, the second dielectric plate 5 has a third surface 51 and a fourth surface 52 that are disposed opposite to each other. That is, the second dielectric plate 5 is disposed in the second direction ( Figure 2 The second dielectric plate 5 has two opposite surfaces in the z direction (shown in FIG. 1 ), and the third surface 51 is provided on one side of the second dielectric plate 5 in the second direction ( Figure 2 The fourth surface 52 is provided on the other side of the second dielectric plate 5 in the second direction ( Figure 2 The underside of the second dielectric plate is shown).

[0032] In the embodiment of the present invention, Figure 2 As shown, the antenna assembly further includes a metal floor 6. The metal floor 6 is provided on the fourth surface 52 ( Figure 2 The metal floor 6 is located on the bottom surface of the second dielectric plate 5 shown in FIG. 4 , and there is a gap between the metal floor 6 and the first surface 41. It can be understood that the metal floor 6 partially overlaps with the fourth surface 52 but not completely. Therefore, there is a gap between the edge of the metal floor 6 and the first surface 41. The gap represents the gap between the metal floor and the first surface 41 in the third direction ( Figure 2 The minimum distance between the metal floor 6 and the first surface 41 in the third direction (in the y direction shown) is defined as L. The gap L can be greater than or equal to a first set value and less than or equal to a second set value. The first set value is 1.2 mm, and the second set value is 1.8 mm. In other words, 1.2 mm ≤ L ≥ 1.8 mm. In some embodiments, the gap L between the metal floor 6 and the first surface 41 in the third direction can be 1.5 mm.

[0033] In some embodiments, the antenna assembly includes a metal frame and a second dielectric plate. That is, the antenna assembly may not be provided with a first dielectric plate. The metal frame extends along a second direction, which is perpendicular to the first direction, and the metal frame forms the radiator of the antenna unit. The second dielectric plate extends along a third direction, and the second dielectric plate is provided with an antenna bracket. The coupling patch is installed on the antenna bracket so that a coupling gap is formed between the coupling patch and the antenna radiator formed by the metal frame. The embodiment of the present invention adopts the form of a metal frame and installs the coupling patch on the antenna bracket of the second dielectric plate. It can also realize coupled feeding of the coupling patch, so that the anti-phase coupling current on the coupling patch and the original coupling current between the antenna units cancel each other out to achieve a decoupling effect, thereby improving the isolation between the antenna units.

[0034] In some embodiments, combined Figure 2 As shown, the lumped element 3 is arranged on the fourth surface 52, and the lumped element 3 is arranged in the gap. The lumped element 3 is connected to the coupling patch 2, and the lumped element 3 and the metal floor 6 are both arranged on the fourth surface 52. The lumped element 2 and the metal floor 6 are in the third direction ( Figure 2 The lumped element 2 is flush with the metal floor 6 (in the y direction shown), which can be understood as the lumped element 2 being coplanar with the metal floor 6. In this embodiment of the present invention, by arranging the lumped element on the fourth surface, the lumped element can be arranged in the gap between the metal floor and the first surface, making the lumped element and the metal floor coplanar, wherein a gap exists between the lumped element and the metal floor. This embodiment of the present invention makes the assembly of the lumped element more compact, thereby improving the space utilization of the assembly.

[0035] In some embodiments, combined Figure 2 As shown, the coupling patch 2 extends to the fourth surface 52 and is connected to the lumped element 3. The lumped element 3 is connected to the coupling patch 2 via a pad. By arranging the pad on the fourth surface 52, the lumped element 3 is connected to the pad on the fourth surface 52. This eliminates the need to attach the lumped element 3 to the coupling patch 2, thereby reducing the size of the antenna assembly in the third direction and improving the structural compactness of the antenna assembly.

[0036] In some embodiments, as Figure 1b and Figure 2 As shown, the antenna unit further includes a radiating element 7, a feeding element 8, and a grounding branch 9. The radiating element 7 can be configured as a metal radiating element and is disposed on the second surface 42 of the first dielectric plate 4. The radiating element 7 is configured to efficiently radiate or receive radio waves. The feeding element 8 is disposed on the third surface 51 of the second dielectric plate 5 and is configured to feed power to the radiating element 7. The grounding branch 9 connects the metal ground 6 to the radiating element 7.

[0037] In some embodiments, as Figure 1bAs shown, the feeding unit 8 includes a feeding branch 81 and a feeding microstrip line 82. The feeding branch 81 is arranged on the third surface 51, and the feeding branch 81 can excite the radiation unit 7 by coupling feeding. Figure 1b As shown, one end of the feeding branch 81 extends to the first surface 41 close to the first dielectric plate 4, wherein the feeding branch 81 and the first surface 41 of the first dielectric plate 4 are in the third direction ( Figure 1b The spacing distance in the y direction (shown) is greater than or equal to 0.1 mm and less than or equal to 0.3 mm. The radiating element 7 is located on the second surface 42 of the first dielectric plate 4, and the feeding branch 81 excites the radiating element by coupling feeding. The feeding microstrip line 82 is arranged on the third surface 51, and one end of the feeding microstrip line 82 ( Figure 1a The right end in the y direction shown in FIG) is connected to the feeding branch 81, and the other end of the feeding microstrip line 82 ( Figure 1a A feeding point 83 is provided at the left end in the y direction as shown.

[0038] In some embodiments, as Figure 3 As shown, adjacent radiation units 7 are in the first direction ( Figure 3 The distance M in the x-direction (shown as shown) is less than or equal to 2 mm. In this embodiment of the present invention, by limiting the distance between adjacent radiating elements in the first direction to within 2 mm, both radiating elements are disposed on the second surface of the first dielectric plate, and the distance between the two radiating elements is limited to a certain range. This improves the isolation between antenna elements without increasing the distance between them, thereby achieving a compact structure of the two elements in space. This improves the isolation between the antenna elements while also increasing the compactness between the antenna elements, thereby facilitating a reduction in the size of the electronic device.

[0039] In some embodiments, as Figure 3 As shown, the symmetry axes of adjacent radiation elements 7 ( Figure 3 The dot-dash line shown) is in the first direction ( Figure 3 In the embodiment of the present invention, by aligning the symmetry axes of adjacent radiating elements and adjacent coupling patches, the neatness of the antenna unit arrangement is improved, which helps to improve the processing and assembly efficiency of electronic equipment.

[0040] In some embodiments, as Figure 3 As shown, the spacing between adjacent coupling patches 2 is the same as the spacing between adjacent radiating elements 7, as shown in FIG. Figure 3 As shown, the distance M can be used to represent the spacing between adjacent radiation units 7 in the first direction. When the spacing between coupling patches 2 in the first direction is the same as the spacing between adjacent radiation units, the spacing between coupling patches in the first direction can also be represented by the distance M.

[0041] In some embodiments, the characteristic impedance of the feeding microstrip line 82 is 50 ohms. In the embodiment of the present invention, the width of the feeding microstrip line is set to a set value, which may be 1.5 mm. By setting the width of the feeding microstrip line to 1.5 mm, the characteristic impedance of the feeding microstrip line 82 is 50 ohms.

[0042] In some embodiments, as Figure 3 As shown, the radiation unit 7 is in the third direction ( Figure 3 The length N of the radiation element (in the x direction shown) is one quarter of the wavelength of the operating frequency of the radiation element 7. The operating frequency of the radiation element can be adjusted by adjusting the size of the radiation element.

[0043] The simulation results of the embodiment of the present invention are described below:

[0044] Figure 4 The figure shows the result of simulating the S parameters of the antenna assembly of the embodiment of the present invention using simulation software. Among them, the S parameters are parameters used by those skilled in the art to observe the frequency domain characteristics. Among them, S11 is the input reflection coefficient of the antenna assembly, and S21 is the forward penetration coefficient. Figure 4 As shown in the figure, the horizontal axis represents the frequency and the vertical axis represents the parameter value of the S parameter. Taking the reflection coefficient S11 less than -6dB as the standard, the impedance bandwidth of the antenna assembly in the embodiment is 2.496-2.690GHz, and the in-band isolation is improved from more than 5dB to more than 15dB before and after adding the coupling patch. The embodiment of the present invention effectively improves the isolation of the antenna assembly. Figure 4 The S21 curves before and after the coupling patch is added demonstrate that the coupling patch in this embodiment of the present invention has minimal impact on the resonant frequency of the antenna assembly. Adding the coupling patch improves the isolation between the antenna assemblies from greater than 5dB to greater than 15dB, a 10dB improvement. This demonstrates that the addition of the coupling patch significantly impacts the isolation of the antenna assembly but does not affect the resonant frequency of the antenna.

[0045] Figure 5-Figure 8 Shown is the antenna pattern when one of the antenna assemblies is fed with power in an embodiment of the present invention; Figure 5 is the XOY plane pattern of the antenna component, Figure 6 is the XOZ plane pattern of the antenna assembly, Figure 7 is the YOZ plane pattern of the antenna assembly. The distance from the center represents the signal strength, and the center of the pattern is located at the symmetric center of the two antenna units. Figure 5-8 It can be seen that when one of the antenna components is excited ( Figure 8 The maximum radiation direction is in the other antenna component ( Figure 8The direction of the antenna component on the right side is deflected toward the other antenna component. Since the simulation result is symmetrical, the other antenna component ( Figure 8 In the case of the antenna component on the right as shown in the figure, the maximum radiation direction is deflected toward the antenna component on the left, thus forming a diversity pattern. That is to say, there is diversity decoupling between the two adjacent antenna components, so that the isolation between the two adjacent antenna components is relatively high. Figure 9 Figure 2 shows the antenna current distribution at a frequency of 2.6 GHz in an embodiment of the present invention. When one antenna component is excited, a relatively large current flows through the metal structure on one side of that antenna component. The current coupled from the coupling patch to the other antenna component offsets the current induced by spatial coupling to the other antenna, achieving a compact decoupling effect.

[0046] Combine Figure 5-Figure 9 As shown, without increasing the size of the antenna, the decoupling structure of the lumped element loaded on the coupling patch in the antenna component of the embodiment of the present invention can effectively improve the isolation between two adjacent antenna components, and the distance between the two antenna components can meet the requirements of a relatively compact design.

[0047] An embodiment of the present invention further provides an electronic device comprising an antenna assembly according to any of the above embodiments. This electronic device utilizes coupling patches to increase the transmission path of the coupling current between adjacent antenna units. Lumped elements are used to alter the phase of the coupling current flowing through adjacent coupling patches, causing the anti-phase coupling current in the coupling patches to cancel out the original coupling current between adjacent antenna units, thereby achieving a decoupling effect. This device has a simple and compact structure and improves the isolation between antenna units in the electronic device.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. An antenna assembly, characterized in that: include: A plurality of antenna units, wherein adjacent antenna units are spaced apart in a first direction; Coupling patches are arranged in a one-to-one correspondence with the antenna units, and two adjacent coupling patches are arranged at intervals in the first direction; The lumped element connects two adjacent coupling patches in the first direction, and is used to change the phase of the current passing through the gap between the adjacent coupling patches.

2. The antenna assembly according to claim 1, wherein: The antenna assembly further includes: a first dielectric plate extending along a second direction, at least a portion of each antenna unit and the coupling patch being arranged on the first dielectric plate, the second direction being perpendicular to the first direction; The second dielectric plate extends along a third direction, and the lumped element is arranged on the second dielectric plate. The third direction is perpendicular to both the first direction and the second direction.

3. The antenna assembly according to claim 2, wherein: The first dielectric plate has a first surface and a second surface disposed opposite to each other. The second dielectric plate extends to the first surface in a third direction. The coupling patch is attached to the first surface.

4. The antenna assembly according to claim 3, wherein: The second dielectric plate has a third surface and a fourth surface disposed opposite to each other; the antenna assembly further includes: A metal floor is disposed on the fourth surface, with a gap between the metal floor and the first surface.

5. The antenna assembly according to claim 4, wherein: The lumped element is disposed on the fourth surface, and the lumped element is disposed in the gap.

6. The antenna assembly according to claim 5, wherein: The coupling patch extends to the fourth surface and is connected to the lumped element.

7. The antenna assembly according to claim 6, wherein: The antenna unit further includes: a radiation unit, disposed on the second surface of the first dielectric plate; a feeding unit, provided on the third surface of the second dielectric plate, for feeding power to the radiating unit; The grounding branch connects the metal floor and the radiation unit.

8. The antenna assembly according to claim 7, wherein: The feeding unit includes: A feeding branch, arranged on the third surface, the feeding branch excites the radiating unit by coupling feeding; A feeding microstrip line is arranged on the third surface, one end of which is connected to the feeding branch, and the other end of which is provided with a feeding point.

9. The antenna assembly according to claim 7, wherein: The distance between adjacent radiation units in the first direction is less than or equal to 2 mm.

10. The antenna assembly according to claim 7, wherein: The symmetry axes of adjacent radiation units coincide with the symmetry axes of adjacent coupling patches in the first direction.

11. The antenna assembly according to claim 10, wherein: The spacing between adjacent coupling patches is the same as the spacing between adjacent radiation units.

12. The antenna assembly according to claim 1, wherein: The antenna assembly further includes: a metal frame extending along a second direction, the second direction being perpendicular to the first direction, the metal frame forming a radiator of the antenna unit; The second dielectric plate extends along the third direction. The second dielectric plate is provided with an antenna bracket. The coupling patch is mounted on the antenna bracket to form a coupling gap with the metal frame.

13. An electronic device, characterized in that: include: The antenna assembly according to any one of claims 1 to 12.

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