Antenna module and communication device

Abstract

This application relates to an antenna assembly and a communication device. The antenna assembly includes an enclosure, a first antenna module, a second antenna module, and a filtering module. The first antenna module and the second antenna module are both mounted in an accommodation cavity of the enclosure. The filtering module is located along a distribution direction of the first antenna module and the second antenna module and between the first antenna module and the second antenna module adjacent to each other. The filtering module can reflect at least a part of output electromagnetic waves, thereby reducing a risk that output electromagnetic waves generated by the first antenna module are transferred to the second antenna module; and / or the filtering module can absorb and consume energy of the output electromagnetic waves, to weaken strength of output electromagnetic waves near the second antenna module. This increases isolation between the first antenna module and the second antenna module, enhances signal receiving sensitivity of the antenna assembly and the communication device, and improves signal transmission quality and signal transmission stability of the antenna assembly and the communication device.

Description

TECHNICAL FIELD

[0001] This application relates to the field of wireless communication technologies, and in particular, to an antenna assembly and a communication device.BACKGROUND

[0002] A communication device includes an antenna assembly configured to receive and transmit electromagnetic waves. The antenna assembly includes a first antenna module and a second antenna module that are mounted in an enclosure. The first antenna module is configured to transmit electromagnetic waves, and the second antenna module is configured to receive electromagnetic waves. The first antenna module and the second antenna module may operate simultaneously, that is, the communication device may receive and send signals simultaneously, thereby improving information exchange efficiency.

[0003] In conventional technologies, isolation between the first antenna module and the second antenna module is poor, that is, electromagnetic waves transmitted by the first antenna module may be transferred to the second antenna module. This interferes with reception of input signals by the second antenna module, and deteriorates signal receiving sensitivity of the communication device.SUMMARY

[0004] This application provides an antenna assembly and a communication device, to improve isolation between a first antenna module and a second antenna module.

[0005] A first aspect of this application provides an antenna assembly, including: an enclosure, where the enclosure is provided with an accommodation cavity; at least one first antenna module and at least one second antenna module, where the first antenna module and the second antenna module are both mounted in the accommodation cavity, and the first antenna module and the second antenna module are spaced apart along a first direction; and a filtering module, where the filtering module is located along the first direction and between the first antenna module and the second antenna module adjacent to each other. In this application, the filtering module can reflect at least a part of output electromagnetic waves, thereby reducing a risk that output electromagnetic waves generated by the first antenna module are transferred to the second antenna module; and / or the filtering module can absorb and consume energy of output electromagnetic waves, to weaken strength of output electromagnetic waves near the second antenna module. This increases isolation between the first antenna module and the second antenna module, enhances signal receiving sensitivity of the antenna assembly, and improves signal transmission quality and signal transmission stability of the antenna assembly.

[0006] In some embodiments, the enclosure includes, along a height direction of the antenna assembly, a first cover body and a second cover body disposed opposite to each other, and the first antenna module and the second antenna module are both mounted on the first cover body, or the first antenna module and the second antenna module are both mounted on the second cover body. The filtering module includes a first filtering element, where one end of the first filtering element is connected to the first cover body, another end of the first filtering element extends toward a direction close to the second cover body, and an angle α1 between the extension direction of the first filtering element and the height direction of the antenna assembly satisfies: 0° ≤ α1 < 90°. In this application, one end of the first filtering element is connected to the first cover body, and the other end extends toward the direction close to the second cover body, so that the first filtering element can block at least a part of the accommodation cavity in the first direction, thereby facilitating reflecting and absorbing the output electromagnetic wave by the first filtering element, simplifying a structure of the first filtering element, and helping reduce costs of the antenna assembly and the communication device.

[0007] In some embodiments, there is one first filtering element. In this application, there is one first filtering element, further reducing material costs and processing costs of the first filtering element.

[0008] In some embodiments, there are at least two first filtering elements, a plurality of first filtering elements are spaced apart along the first direction, and a coupling cavity is formed between adjacent first filtering elements. In this application, after the first filtering element reflects and absorbs a part of the output electromagnetic wave, a remaining part of the output electromagnetic wave penetrates the first filtering element and enters the coupling cavity, and air in the coupling cavity can be coupled with the output electromagnetic wave, to further weaken the strength of the output electromagnetic wave, thereby further improving the isolation between the first antenna module and the second antenna module.

[0009] In some embodiments, a first gap exists between the first filtering element and the second cover body along the height direction of the antenna assembly. The filtering module further includes a second filtering element, where the second filtering element is mounted on the second cover body, and at least a part of the second filtering element is located within the first gap. In this application, setting the first gap reduces a risk of damage and deformation to the first filtering element and the second cover body caused by interference between the first filtering element and the second cover body under impact of factors such as a processing error and an installation error, thereby extending a service life of the first filtering element and a service life of the second cover body. At least a part of the first gap is filled by the second filtering element, so that a risk that the output electromagnetic wave is transmitted to the second antenna module through the first gap is reduced, thereby improving the isolation between the first antenna module and the second antenna module.

[0010] In some embodiments, a second gap exists between the second filtering element and the first filtering element along the height direction of the antenna assembly. The filtering module further includes a third filtering element, where one end of the third filtering element is connected to the second filtering element, another end of the third filtering element extends toward a direction close to the first cover body, and an angle α2 between and extension direction of the third filtering element and the height direction of the antenna assembly satisfies: 0° ≤ α2 < 90°. Along the height direction of the antenna assembly, a height of the third filtering element is greater than or equal to a height of the first gap adjacent to the third filtering element. In this application, setting the second gap reduces a risk of damage and deformation to the first filtering element and the second filtering element caused by interference between the first filtering element and the second filtering element, thereby extending a service life of the first filtering element and a service life of the second filtering element. The height of the third filtering element is greater than or equal to the height of the first gap adjacent to the third filtering element, that is, the second gap is blocked by the third filtering element, so that a risk that the output electromagnetic wave is transmitted to the second antenna module through the second gap is reduced, thereby improving the isolation between the first antenna module and the second antenna module.

[0011] In some embodiments, the third filtering element and the first filtering element are spaced apart along the first direction. In this application, the third filtering element and the first filtering element are spaced apart along the first direction, so that a risk of damage and deformation to the first filtering element and the third filtering element caused by interference between the first filtering element and the third filtering element is reduced, thereby extending a service life of the first filtering element and a service life of the third filtering element, and further improving operating stability of the antenna assembly.

[0012] In some embodiments, a fourth gap exists between the third filtering element and the first filtering element along the first direction; or the third filtering element abuts against the first filtering element along the first direction. In this application, the fourth gap exists between the third filtering element and a first filtering element on at least one side of the third filtering element, so that a risk of damage and deformation to the first filtering element and the third filtering element caused by interference between the first filtering element and the third filtering element under impact of processing errors and installation errors is reduced, thereby extending a service life of the first filtering element and a service life of the third filtering element. The third filtering element abuts against first filtering elements on two sides of the third filtering element, that is, the third filtering element fully fills the coupling cavity, thereby increasing a thickness of the third filtering element in the first direction, and improving a reflection effect and an absorption effect of the third filtering element on the output electromagnetic wave.

[0013] In some embodiments, the third filtering element is integrally formed with the second filtering element; or the third filtering element and the second filtering element are separately arranged and fixedly connected. In this application, the first filtering element is integrally formed with the first cover body, so that connection stability between the first filtering element and the first cover body is improved. The first filtering element and the first cover body are separately arranged and fixedly connected, facilitating disassembly and replacement of the first filtering element, and thereby reducing maintenance costs of the antenna assembly and the communication device.

[0014] In some embodiments, the first filtering element is integrally formed with the first cover body; or the first filtering element and the first cover body are separately arranged and fixedly connected. In this application, the second filtering element is integrally formed with the second cover body, so that connection stability between the second filtering element and the second cover body is improved. The second filtering element and the second cover body separately arranged and fixedly connected, facilitating disassembly and replacement of the second filtering element, and thereby reducing maintenance costs of the antenna assembly and the communication device.

[0015] In some embodiments, a material of the filtering module is metal and / or a wave-absorbing material. In this application, the metal and the wave-absorbing material can improve a reflection effect and an absorption effect of the filtering module on the output electromagnetic wave.

[0016] A second aspect of this application provides a communication device, including a base body and at least one antenna assembly according to any one of the foregoing items, where the antenna assembly is mounted on the base body. In this application, the filtering module is disposed between the first antenna module and the second antenna module adjacent to each other. The filtering module can improve the isolation between the first antenna module and the second antenna module, improve the signal receiving sensitivity of the communication device, and improve the signal transmission quality and the signal transmission stability of the communication device.

[0017] It should be understood that the foregoing general description and the following detailed description are merely examples and are not intended to limit the scope of this application.BRIEF DESCRIPTION OF DRAWINGS

[0018] FIG. 1 is a sectional view of a partial structure of an antenna assembly according to an embodiment of this application, where there are a plurality of first filtering elements and heights of the first filtering elements are the same; FIG. 2 is a sectional view of a partial structure of an antenna assembly according to another embodiment of this application, where there are a plurality of first filtering elements and heights of the first filtering elements are different, and the first filtering elements are symmetrically distributed along a first direction; FIG. 3 is a sectional view of a partial structure of an antenna assembly according to another embodiment of this application, where both a first filtering element and a second filtering element are disposed; FIG. 4 is a sectional view of a partial structure of an antenna assembly according to another embodiment of this application, where a first filtering element, a second filtering element, and a third filtering element are all disposed; FIG. 5 is a perspective view of the antenna assembly in FIG. 1 along a height direction according to an embodiment, where there is one first antenna module and one second antenna module; FIG. 6 is a perspective view of the antenna assembly in FIG. 1 along a height direction according to another embodiment, where there are a plurality of first antenna modules and a plurality of second antenna modules; and FIG. 7 is a diagram of a curve of an isolation improvement effect for an antenna assembly according to this application. Reference numerals:

[0019] 1-Enclosure; 11-Accommodation cavity; 12-First cover body; 13-Second cover body; 2-First antenna module; 3-Second antenna module; 4-First filtering element; 41-Coupling cavity; 42-First gap; 5-Second filtering element; 51-Second gap; 6-Third filtering element.

[0020] The accompanying drawings herein are incorporated into this specification and constitute a part of this specification, to show embodiments in accordance with this application, and are used, together with this specification, to explain the principle of this application.DESCRIPTION OF EMBODIMENTS

[0021] For ease of understanding technical solutions of this application, the following describes embodiments of this application in detail with reference to the accompanying drawings.

[0022] It should be noted that the described embodiments are merely some embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on embodiments of this application without creative efforts shall fall within the protection scope of this application.

[0023] In a specific embodiment, the following further describes this application in detail with reference to specific embodiments and the accompanying drawings.

[0024] Embodiments of this application provide a communication device, including a base body and an antenna assembly mounted on the base body. The antenna assembly is configured to convert a received electromagnetic wave signal into an electrical signal and transfer the electrical signal to an electronic element, and / or the antenna assembly is configured to convert a received electrical signal of an electronic element into an electromagnetic wave signal and transmit the electromagnetic wave signal externally from the communication device, to implement information exchange between the communication device and an outside. The communication device includes, but is not limited to, an electronic device having an information exchange function, for example, a mobile phone, a tablet, a computer, a smart helmet, smart glasses, a communication base station, or a radar. A specific type of the communication device is not specifically limited in embodiments of this application.

[0025] Specifically, as shown in FIG. 1, the antenna assembly includes an enclosure 1, a first antenna module 2, and a second antenna module 3. The enclosure 1 is provided with an accommodation cavity 11. The first antenna module 2 and the second antenna module 3 are both mounted in the accommodation cavity 11 and the first antenna module 2 and the second antenna module 3 are spaced apart along a first direction X. The first antenna module 2 and the second antenna module 3 are both connected to a circuit board. The circuit board is located in the accommodation cavity 11. The first antenna module 2 and the second antenna module 3 may be connected to a same circuit board. Alternatively, the circuit board includes a first circuit board and a second circuit board, the first antenna module 2 is connected to the first circuit board and is configured to transmit an electromagnetic wave signal to an outside, and the second antenna module 3 is connected to the second circuit board and is configured to receive an electromagnetic wave signal from the outside. For ease of description, the following uses an example in which the circuit board includes the first circuit board and the second circuit board, the first antenna module 2 is connected to the first circuit board, and the second antenna module 3 is connected to the second circuit board for description.

[0026] In an operation process of the communication device, the first circuit board transmits an output electrical signal to the first antenna module 2, the first antenna module 2 generates an output electromagnetic wave based on the received output electrical signal, and the output electromagnetic wave enters an external environment through a transmission channel on the enclosure 1, to implement a signal transmitting function of the communication device. When an external input electromagnetic wave signal is transmitted to the second antenna module 3 through the transmission channel on the enclosure 1, the second antenna module 3 converts the received input electromagnetic wave signal into an electrical signal and transmits the electrical signal to the second circuit board, to implement a signal receiving function of the communication device. The communication device may simultaneously transmit a signal and output a signal, that is, the first antenna module 2 and the second antenna module 3 may operate simultaneously. In this case, the output electromagnetic wave of the first antenna module 2 can be propagated in the accommodation cavity 11 and enter the second antenna module 3, that is, the second antenna module 3 receives the input electromagnetic wave and a part of the output electromagnetic wave. The second antenna module 3 converts the received input electromagnetic wave into an input electrical signal, and converts the received output electromagnetic wave into an interference electrical signal. An electrical signal generated by the second antenna module 3 is enhanced as the input electrical signal is superimposed with the interference electrical signal, and an automatic gain controller is triggered to start operating to weaken signal strength. Consequently, strength of the input electrical signal received by the second circuit board is weakened, and signal receiving sensitivity of the communication device is deteriorated.

[0027] In view of this, as shown in FIG. 1 and FIG. 2, the antenna assembly provided in this application further includes a filtering module. The filtering module is located along the first direction X and between the first antenna module 2 and the second antenna module 3 adjacent to each other. The filtering module can reflect at least a part of the output electromagnetic wave, thereby reducing a risk that the output electromagnetic wave generated by the first antenna module 2 is transferred to the second antenna module 3; and / or the filtering module can absorb and consume energy of the output electromagnetic wave, to weaken strength of the output electromagnetic wave near the second antenna module 3. Isolation between the first antenna module 2 and the second antenna module 3 is improved, the strength of the input electrical signal received by the circuit board is improved, signal receiving sensitivity of the antenna assembly and the communication device is improved, and signal transmission quality and signal transmission stability of the antenna assembly and the communication device and user experience are improved.

[0028] Specifically, as shown in FIG. 1 and FIG. 2, the enclosure 1 includes, along a second direction Z, that is, along a height direction of the antenna assembly, a first cover body 12 and a second cover body 13 disposed opposite to each other. The first antenna module 2 and the second antenna module 3 are both mounted on the first cover body 12, or the first antenna module 2 and the second antenna module 3 are both mounted on the second cover body 13. The filtering module includes a first filtering element 4, where one end of the first filtering element 4 is connected to the first cover body 12, and another end of the first filtering element 4 extends toward a direction close to the second cover body 13. An angle α1 between the extension direction of the first filtering element 4 and the second direction Z satisfies: 0° ≤ α1 < 90°. Specifically, α1 may be 0°, 8°, 18°, 28°, 38°, 48°, 58°, 68°, 78°, 88°, 89°, or the like.

[0029] In this embodiment, when the first antenna module 2 is in an operating state, the output electromagnetic wave generated by the first antenna module 2 can be transmitted to the second antenna module 3 along an inner surface of the first cover body 12, the accommodation cavity 11, and an inner surface of the second cover body 13. One end of the first filtering element 4 is connected to the first cover body 12, and the other end extends toward the direction close to the second cover body 13, so that the first filtering element 4 can block at least a part of the accommodation cavity 11 in the first direction X, thereby facilitating reflecting and absorbing the output electromagnetic wave by the first filtering element 4, simplifying a structure of the first filtering element 4 on a premise that a requirement for isolation between the first antenna module 2 and the second antenna module 3 is satisfied, reducing material costs and processing costs of the first filtering element 4, and helping reduce costs of the antenna assembly and the communication device.

[0030] The angle α1 between the extension direction of the first filtering element 4 and the second direction Z satisfies: α1 = 0°, that is, the first filtering element 4 extends along the second direction Z, to increase a reflection effect of the first filtering element 4 on the output electromagnetic wave.

[0031] In an embodiment, there is one first filtering element 4, further reducing the material costs and the processing costs of the first filtering element 4.

[0032] In another embodiment, there are at least two first filtering elements 4, a plurality of the first filtering elements 4 are spaced apart along the first direction X, and a coupling cavity 41 is formed between adjacent first filtering elements 4.

[0033] In this embodiment, after the first filtering element 4 reflects and absorbs a part of the output electromagnetic wave, a remaining part of the output electromagnetic wave penetrates the first filtering element 4 and enters the coupling cavity 41, and air in the coupling cavity 41 can be coupled with the output electromagnetic wave, to further weaken the strength of the input electromagnetic wave, thereby further improving the isolation between the first antenna module 2 and the second antenna module 3, and improving the signal receiving sensitivity of the antenna assembly and the communication device.

[0034] In an embodiment, adjacent first filtering elements 4 have a same height along the second direction Z. As shown in FIG. 1, a plurality of first filtering elements 4 have a same height dimension, to facilitate processing of the first filtering element 4, reduce the processing costs of the first filtering element 4, and shorten a processing cycle of the first filtering element 4.

[0035] In another embodiment, as shown in FIG. 2, adjacent first filtering elements 4 have different heights, that is, a plurality of first filtering elements 4 have at least two height dimensions, to increase a frequency range of the output electromagnetic wave that can be coupled, thereby improving an effect of the first filtering element 4 on isolation between the first antenna module 2 and the second antenna module 3. The first filtering elements 4 having different heights may be irregularly distributed along the first direction X, or may be distributed along the first direction X in ascending order or descending order of the height dimensions, or may be symmetrically distributed on the left and right sides along the first direction X as shown in FIG. 2, to increase distribution flexibility of the first filtering elements 4. In this embodiment, the first filtering elements 4 having a plurality of height dimensions are symmetrically distributed on the left and right sides along the first direction X, so that an isolation effect of the first filtering elements 4 for output electromagnetic waves of different frequencies can be improved.

[0036] In addition, when there are at least three first filtering elements 4, width dimensions of adjacent coupling cavities 41 in the first direction X are the same, or width dimensions of adjacent coupling cavities 41 in the first direction X are different, that is, the first filtering elements 4 may be uniformly or non-uniformly distributed along the first direction X, to increase the distribution flexibility of the first filtering elements 4.

[0037] In an embodiment, the first filtering element 4 abuts against the second cover body 13 along the second direction Z, that is, the first filtering element 4 completely blocks the accommodation cavity 11 along the second direction Z, to improve the isolation effect of the first filtering element 4.

[0038] In another embodiment, as shown in FIG. 1 to FIG. 4, a first gap 42 exists between the first filtering element 4 and the second cover body 13 along the second direction Z. As shown in FIG. 3, the filtering module further includes a second filtering element 5, where the second filtering element 5 is mounted on the second cover body 13, and at least a part of the second filtering element 5 is located within the first gap 42.

[0039] In this embodiment, setting the first gap 42 reduces a risk of damage and deformation to the first filtering element 4 and the second cover body 13 caused by interference between the first filtering element 4 and the second cover body 13 under impact of factors such as a processing error and an installation error, thereby extending a service life of the first filtering element 4 and a service life of the second cover body 13, improving operating stability of the antenna assembly and the communication device, and extending a service life of the antenna assembly and a service life of the communication device. At least a part of the first gap 42 is filled by the second filtering element 5, so that a risk that the output electromagnetic wave is transmitted to the second antenna module 3 through the first gap 42 is reduced, thereby improving the isolation between the first antenna module 2 and the second antenna module 3, and improving the signal receiving sensitivity of the antenna assembly and the communication device.

[0040] In an embodiment, the second filtering element 5 abuts against the first filtering element 4 along the second direction Z, that is, the second filtering element 5 completely blocks the first gap 42 along the second direction Z, to improve an isolation effect of the second filtering element 5.

[0041] In another embodiment, as shown in FIG. 3 and FIG. 4, a second gap 51 exists between the second filtering element 5 and the first filtering element 4 along the second direction Z. As shown in FIG. 4, the filtering module further includes a third filtering element 6, where one end of the third filtering element 6 is connected to the second filtering element 5, another end of the third filtering element 6 extends toward a direction close to the first cover body 12, and an angle α2 between the extension direction of the third filtering element 6 and the second direction Z satisfies: 0° ≤ α2 < 90°. Specifically, α2 may be 0°, 8°, 18°, 28°, 38°, 48°, 58°, 68°, 78°, 88°, 89°, or the like. Along the second direction Z, a height dimension of the third filtering element 6 is greater than or equal to a height dimension of the first gap 42 adjacent to the third filtering element 6.

[0042] In this embodiment, setting the second gap 51 reduces a risk of damage and deformation to the first filtering element 4 and the second filtering element 5 caused by interference between the first filtering element 4 and the second filtering element 5 under impact of factors such as a processing error and an installation error, thereby extending a service life of the first filtering element 4 and a service life of the second filtering element 5, improving the operating stability of the antenna assembly and the communication device, and prolonging the service life of the antenna assembly and the service life of the communication device. A height of the third filtering element 6 is greater than or equal to a height of the first gap 42 adjacent to the third filtering element 6, that is, the second gap 51 is blocked by the third filtering element 6, so that a risk that the output electromagnetic wave is transmitted to the second antenna module 3 through the second gap 51 is reduced, thereby improving the isolation between the first antenna module 2 and the second antenna module 3, and improving the signal receiving sensitivity of the antenna assembly and the communication device.

[0043] The angle α2 between the extension direction of the third filtering element 6 and the second direction Z satisfies: α2 = 0°, that is, the third filtering element 6 extends along the second direction Z, to increase a reflection effect of the third filtering element 6 on the output electromagnetic wave.

[0044] In an embodiment, the third filtering element 6 and the first filtering element 4 are distributed along the second direction Z, that is, one end of the third filtering element 6 is connected to the second filtering element 5, and the other end abuts against the first filtering element 4, so that the first gap 42 is blocked by the third filtering element 6.

[0045] In another embodiment, as shown in FIG. 4, the third filtering element 6 and the first filtering element 4 are spaced apart along the first direction X, that is, a projection of the third filtering element 6 and a projection of the first filtering element 4 have an overlapping part in the first direction X. Taking the third filtering element 6 between two adjacent first filtering elements 4 as an example, one end of the third filtering element 6 is connected to the second filtering element 5, and the other end extends into the coupling cavity 41 along the second direction Z.

[0046] In this embodiment, distributing the third filtering element 6 and the first filtering element 4 spaced from each other along the first direction X reduces a risk of damage and deformation to the first filtering element 4 and the third filtering element 6 caused by interference between the first filtering element 4 and the third filtering element 6 under impact of factors such as a processing error and an installation error, thereby extending a service life of the first filtering element 4 and a service life of the third filtering element 6, improving the operating stability of the antenna assembly and the communication device, and prolonging the service life of the antenna assembly and the service life of the communication device.

[0047] In an embodiment, a fourth gap exists between the third filtering element 6 and the first filtering element 4 on at least one side of the third filtering element 6 along the first direction X, so that a risk of damage and deformation to the first filtering element 4 and the third filtering element 6 caused by interference between the first filtering element 4 and the third filtering element 6 under impact of processing errors and installation errors is reduced, thereby prolonging the service life of the first filtering element 4 and the service life of the third filtering element 6, improving the operating stability of the antenna assembly and the communication device, and prolonging the service life of the antenna assembly and the service life of the communication device. In another embodiment, the third filtering element 6 abuts against first filtering elements 4 on two sides of the third filtering element 6 along the first direction X, that is, the third filtering element 6 fully fills the coupling cavity 41 in the first direction X, thereby increasing a thickness of the third filtering element 6 in the first direction X, and improving a reflection effect and an absorption effect of the third filtering element 6 on the output electromagnetic wave.

[0048] In an embodiment, there is one third filtering element 6, further reducing material costs and processing costs of the third filtering element 6.

[0049] In another embodiment, as shown in FIG. 4, there are at least two third filtering elements 6, that is, the third filtering element 6 can reflect and absorb the output electromagnetic wave for a plurality of times, thereby improving an isolation effect of the third filtering element 6.

[0050] In an embodiment, adjacent third filtering elements 6 have a same height along the second direction Z, that is, a plurality of third filtering elements 6 have a same height dimension, to facilitate the processing of the third filtering element 6, reduce the processing costs of the third filtering element 6, and shorten a processing cycle of the third filtering elements 6.

[0051] In another embodiment, as shown in FIG. 4, adjacent third filtering elements 6 have different heights, that is, a plurality of third filtering elements 6 have at least two height dimensions, to increase a frequency range of the output electromagnetic wave that can be reflected or absorbed, thereby improving an effect of the third filtering elements 6 on isolation between the first antenna module 2 and the second antenna module 3. The first filtering elements 4 having different heights may be irregularly distributed along the first direction X, or may be distributed along the first direction X in ascending order or descending order of the height dimensions, or may be symmetrically distributed on the left and right sides along the first direction X as shown in FIG. 4, to increase distribution flexibility of the third filtering elements 6. In this embodiment, the first filtering elements 4 having a plurality of height dimensions are symmetrically distributed on the left and right sides along the third direction X, so that an isolation effect of the first filtering elements 4 for output electromagnetic waves of different frequencies can be improved.

[0052] In addition, when there are at least three third filtering elements 6, distances between adjacent third filtering elements 6 along the first direction X are the same, or distances between adjacent third filtering elements 6 are different, that is, the third filtering elements 6 may be uniformly or non-uniformly distributed along the first direction X, to increase the distribution flexibility of the third filtering elements 6.

[0053] One third filtering element 6 or a plurality of third filtering elements 6 may be disposed between two adjacent first filtering elements 4 along the first direction X, to increase flexibility of disposing positions and disposing quantities of the third filtering elements 6.

[0054] In any one of the foregoing embodiments, the first filtering element 4 is integrally formed with the first cover body 12, to improve connection stability between the first filtering element 4 and the first cover body 12. Alternatively, the first filtering element 4 and the first cover body are separately arranged and fixedly connected 12, facilitating disassembly and replacement of the first filtering element 4, and thereby reducing maintenance costs of the antenna assembly and the communication device. A connection form between the first filtering element 4 and the first cover body 12 includes, but is not limited to, bonding, clamping, riveting, fastener connection, or the like. A connection manner and a connection structure of the first filtering element 4 and the first cover body 12 are not specifically limited in embodiments of this application. A fastener includes, but is not limited to, a screw, a bolt, a pin, or the like. A specific type of the fastener is not specifically limited in embodiments of this application.

[0055] When there is one first filtering element 4, a material of the first filtering element 4 is metal or a wave-absorbing material, to improve a reflection effect and an absorption effect of the first filtering element 4 on the output electromagnetic wave. When there are at least two first filtering elements 4, a material of the first filtering element 4 is metal and / or a wave-absorbing material, that is, materials of a plurality of first filtering elements 4 may be the same or different, to increase flexibility of material selection of the first filtering elements 4. In addition, when one or more first filtering elements 4 are damaged, it can be easily to maintain the first filtering elements 4.

[0056] In any one of the foregoing embodiments, the second filtering element 5 is integrally formed with the second cover body 13, to improve connection stability between the second filtering element 5 and the second cover body 13. Alternatively, the second filtering element 5 and the second cover body 13 are separately arranged and fixedly connected, facilitating disassembly and replacement of the second filtering element 5, and reducing the maintenance costs of the antenna assembly and the communication device. A connection form between the second filtering element 5 and the second cover body 13 includes, but is not limited to, bonding, clamping, riveting, fastener connection, or the like. Connection manners and connection structures of the second filtering element 5 and the second cover body 13 are not specifically limited in embodiments of this application. A fastener includes, but is not limited to, a screw, a bolt, a pin, or the like. A specific type of the fastener is not specifically limited in embodiments of this application.

[0057] A material of the second filtering element 5 is metal or a wave-absorbing material, to improve a reflection effect and an absorption effect of the second filtering element 5 on the output electromagnetic wave.

[0058] In any one of the foregoing embodiments, the third filtering element 6 is integrally formed with the second filtering element 5, to improve connection stability between the second filtering element 5 and the third filtering element 6. Alternatively, the third filtering element 6 and the second filtering element 5 are separately arranged and fixed connected, facilitating disassembly and replacement of the third filtering element 6, and reducing the maintenance costs of the antenna assembly and the communication device. A connection form between the second filtering element 5 and the third filtering element 6 includes, but is not limited to, bonding, clamping, riveting, fastener connection, or the like. Connection manners and connection structures of the second filtering element 5 and the third filtering element 6 are not specifically limited in embodiments of this application. A fastener includes, but is not limited to, a screw, a bolt, a pin, or the like. A specific type of the fastener is not specifically limited in embodiments of this application.

[0059] When there is one third filtering element 6, a material of the third filtering element 6 is metal or a wave-absorbing material, to improve a reflection effect and an absorption effect of the third filtering element 6 on the output electromagnetic wave. When there are at least two third filtering elements 6, a material of the third filtering element 6 is metal and / or a wave-absorbing material, that is, materials of a plurality of third filtering elements 6 may be the same or different, which increases flexibility of material selection of the first filtering elements 4 and facilitates maintenance of the first filtering elements 4 when one or more third filtering elements 6 are damaged.

[0060] The wave-absorbing material may be a carbon wave-absorbing material, such as graphene, graphite, carbon black, a carbon fiber, or a carbon nanotube, or may be an iron wave-absorbing material, such as ferrite or a magnetic iron nanomaterial, or may be a ceramic wave-absorbing material, such as silicon carbide, or may be a conductive polymer, a chiral material, a plasma material, or the like. A specific type of the wave-absorbing material is not specifically limited in embodiments of this application.

[0061] In any one of the foregoing embodiments, there are one or more first antenna modules 2 and one or more second antenna modules 3. As shown in FIG. 5 and FIG. 6, the antenna assembly further includes a third direction Y, where the third direction Y is perpendicular to the first direction X and the second direction Z. A plurality of first antenna modules 2 are distributed along the first direction X and / or the third direction Y, and a plurality of the second antenna modules 3 are distributed along the first direction X and / or the third direction Y. Quantities and distribution manners of first antenna modules 2 and second antenna modules 3 are not specially limited in embodiments of this application.

[0062] In addition, the first antenna module 2 includes at least one first antenna, and when there are a plurality of first antennas, the first antennas are uniformly or non-uniformly distributed along the first direction X and / or the third direction Y. The first antenna may be a single-layer antenna or a multi-layer antenna, and the first antenna is of, including but not limited to, a square structure, a circular structure, or another variation structure. A structure and a type of the first antenna are not specially limited in embodiments of this application.

[0063] The second antenna module 3 includes at least one second antenna, and when there are a plurality of second antennas, the second antennas are uniformly or non-uniformly distributed along the first direction X and / or the third direction Y. The second antenna may be a single-layer antenna or a multi-layer antenna, and the first antenna is of, including but not limited to, a square structure, a circular structure, or another variation structure. A structure and a type of the first antenna are not specially limited in embodiments of this application

[0064] In conclusion, the antenna assembly provided in embodiments of this application includes the first antenna module 2, the second antenna module 3, and the filtering module disposed between the first antenna module 2 and the second antenna module 3. The output electromagnetic wave is reflected and absorbed by the filtering module, to weaken strength of the output electromagnetic wave near the second antenna module 3. Isolation between the first antenna module 2 and the second antenna module 3 is improved, the strength of the input electrical signal received by the circuit board is improved, the signal receiving sensitivity of the antenna assembly and the communication device is improved, and the signal transmission quality and the signal transmission stability of the antenna assembly and the communication device and user experience are improved. It can be learned from a diagram of a curve of an isolation improvement effect shown in FIG. 7, when the first filtering element 4, the second filtering element 5, and the third filtering element 6 are all disposed in the antenna assembly, compared with the antenna assembly in the conventional technology, the isolation between the first antenna module 2 and the second antenna module 3 is improved by more than 20 dB.

[0065] It should be noted that the foregoing descriptions are merely specific implementations of embodiments of this application, but are not intended to limit the protection scope of embodiments of this application. Any change or replacement within the technical scope disclosed in embodiments of this application shall fall within the protection scope of embodiments of this application. Therefore, the protection scope of embodiments of this application shall be subject to the protection scope of the claims.

Claims

1. An antenna assembly, wherein the antenna assembly comprises: an enclosure, wherein the enclosure is provided with an accommodation cavity; at least one first antenna module and at least one second antenna module, wherein the first antenna module and the second antenna module are both mounted in the accommodation cavity, and the first antenna module and the second antenna module are spaced apart along a first direction; and a filtering module, wherein the filtering module is located along the first direction and between the first antenna module and the second antenna module adjacent to each other.

2. The antenna assembly according to claim 1, wherein the enclosure comprises, along a height direction of the antenna assembly, a first cover body and a second cover body disposed opposite to each other, and the first antenna module and the second antenna module are both mounted on the first cover body, or the first antenna module and the second antenna module are both mounted on the second cover body; and the filtering module comprises a first filtering element, one end of the first filtering element is connected to the first cover body, another end of the first filtering element extends toward a direction close to the second cover body, and an angle α1 between the extension direction of the first filtering element and the height direction of the antenna assembly satisfies: 0° ≤ α1 < 90°.

3. The antenna assembly according to claim 2, wherein there is one first filtering element.

4. The antenna assembly according to claim 2, wherein there are at least two first filtering elements, a plurality of first filtering elements are spaced apart along the first direction, and a coupling cavity is formed between adjacent first filtering elements.

5. The antenna assembly according to any one of claims 2 to 4, wherein a first gap exists between the first filtering element and the second cover body along the height direction of the antenna assembly; and the filtering module further comprises a second filtering element, the second filtering element is mounted on the second cover body, and at least a part of the second filtering element is located within the first gap.

6. The antenna assembly according to claim 5, wherein a second gap exists between the second filtering element and the first filtering element along the height direction of the antenna assembly; the filtering module further comprises a third filtering element, one end of the third filtering element is connected to the second filtering element, another end of the third filtering element extends toward a direction close to the first cover body, and an angle α2 between the extension direction of the third filtering element and the height direction of the antenna assembly satisfies: 0° ≤ α2 < 90°; and along the height direction of the antenna assembly, a height of the third filtering element is greater than or equal to a height of the first gap adjacent to the third filtering element.

7. The antenna assembly according to claim 6, wherein the third filtering element and the first filtering element are spaced apart along the first direction.

8. The antenna assembly according to claim 7, wherein a fourth gap exists between the third filtering element and the first filtering element along the first direction; or the third filtering element abuts against the first filtering element along the first direction.

9. The antenna assembly according to any one of claims 6 to 8, wherein the third filtering element is integrally formed with the second filtering element; or the third filtering element and the second filtering element are arranged and fixedly connected.

10. The antenna assembly according to any one of claims 2 to 9, wherein the first filtering element is integrally formed with the first cover body; or the first filtering element and the first cover body are separately arranged and fixedly connected.

11. The antenna assembly according to any one of claims 1 to 10, wherein a material of the filtering module is metal and / or a wave-absorbing material.

12. A communication device, wherein the communication device comprises: a base body; and at least one antenna assembly according to any one of claims 1 to 11, wherein the antenna assembly is mounted on the base body.

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