Array antenna module and wireless communication device

Abstract

To provide an array antenna module reducing the mutual coupling interference between a transmitting antenna and a receiving antenna.SOLUTION: An array antenna module 1 is provided, including: a transmitting antenna 130 and a receiving antenna 120 arranged on a medium substrate 110 and arranged adjacent to each other; and a first decoupling element 150 and a second decoupling element 140 arranged on the medium substrate 110. The first decoupling element 150 is arranged between the transmitting antenna 130 and the receiving antenna 120, and arranged adjacent to the transmitting antenna 130. The second decoupling element 140 is arranged between the transmitting antenna 130 and the receiving antenna 120, and arranged adjacent to the receiving antenna 120.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to the field of antenna technology, and particularly to an array antenna module and a wireless communication device.

Background Art

[0002] A low-orbit satellite system (LEO) consists of multiple satellites and is a large satellite system capable of real-time information processing. Low-orbit satellites are also used for communication with mobile terminals such as mobile phones. Due to their low orbital altitude, mobile terminals adopting low-orbit satellite communication have the advantages of short transmission delay and small path loss. A mobile communication system consisting of multiple low-orbit satellites can achieve true global coverage and more effective frequency multiplexing. Technologies such as cellular communication, multi-connection, spot beam, and frequency multiplexing also provide technical guarantees for the application of low-orbit satellites to mobile communication. In short, low-orbit satellites are currently highly anticipated mobile communication systems.

[0003] However, in the array antenna module applied to conventional low-orbit satellites, in order to reduce the overall area of antenna design, the arrangement distance between the transmitting antenna and the receiving antenna is close. For example, when it is less than 0.7 wavelengths of the antenna operation frequency band, problems such as mutual coupling interference are likely to occur, which may cause a series of problems such as a decrease in antenna performance, a limitation of the frequency width, and a decrease in efficiency, and is disadvantageous for the application of the array antenna module to mobile terminals. If the arrangement distance between the transmitting antenna and the receiving antenna is too close, for example, when the distance is less than 0.1 wavelengths of the antenna operation frequency band, serious mutual coupling interference problems are likely to occur between the antennas, resulting in problems that each antenna in the array antenna cannot operate independently and it is difficult to maintain stable performance.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of the above problems, the present invention provides an array antenna module and a wireless communication device.

Means for Solving the Problems

[0005] The array antenna module according to the first aspect of the present invention includes a dielectric substrate, at least one transmitting antenna and at least one receiving antenna that are adjacent to each other and provided on the dielectric substrate, and at least one first decoupling element and at least one second decoupling element provided on the dielectric substrate. At least one first decoupling element is disposed between at least one transmitting antenna and at least one receiving antenna and is provided adjacent to at least one transmitting antenna. At least one second decoupling element is disposed between at least one transmitting antenna and at least one receiving antenna and is provided adjacent to at least one receiving antenna.

[0006] The second aspect of the present application also provides a wireless communication device including the above array antenna module.

Advantages of the Invention

[0007] In the array antenna module provided in the present application, at least one first decoupling element is disposed between at least one transmitting antenna and at least one receiving antenna, and the first decoupling element is provided adjacent to at least one transmitting antenna. At the same time, a second decoupling element is disposed between at least one transmitting antenna and at least one receiving antenna, and the second decoupling element is provided adjacent to at least one receiving antenna. Thereby, the mutual coupling interference between at least one transmitting antenna and at least one receiving antenna can be effectively reduced, the performance of at least one transmitting antenna and at least one receiving antenna is guaranteed, and the stability can be improved so that the array antenna module can be applied to more wireless communication devices.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

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Figure 7A

Figure 7B

Figure 7C

Figure 7D

Figure 8A

Figure 8B

Figure 9A

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Figure 10

Figure 11A

Figure 11B

Figure 11C

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Figure 12A

Figure 12B

Figure 13

Embodiments for Carrying Out the Invention

[0009] Hereinafter, in connection with the drawings in the embodiments of the present invention, the technical aspects in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the examples in the present invention, all other examples obtained by those skilled in the art without creative labor shall fall within the protection scope of the present invention.

[0010] In addition, when an element is described as being "electrically connected" to another element, it may be directly connected to the other element, or there may be still other elements between it and the other element. When an element is considered to be "electrically connected" to another element, it may be connected in contact (for example, in the form of wire connection), or may be connected in a non-contact manner (for example, in the form of non-contact coupling).

[0011] Unless otherwise defined, all technical terms and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in this specification are only for the purpose of explaining specific embodiments and are not intended to limit the present invention.

[0012] Hereinafter, based on the accompanying drawings, some embodiments of the present invention will be described in detail. If there is no contradiction, the following examples and the features in the examples may be combined.

[0013] A Low-orbit satellite system (LEO) is a large satellite system consisting of multiple satellites capable of real-time information processing. Low-orbit satellites are also used for communication with mobile terminals such as mobile phones. Moreover, due to their low orbital altitude, mobile terminals adopting low-orbit satellite communication have the advantages of short transmission delay and small path loss. A mobile communication system consisting of multiple low-orbit satellites can achieve true global coverage and is more effective in frequency multiplexing. Technologies such as cellular communication, multi-connection, spot beam, and frequency multiplexing also provide technical guarantees for the application of low-orbit satellites to mobile communication. In short, low-orbit satellites are currently highly anticipated mobile communication systems.

[0014] However, the array antenna module applied to conventional low-orbit satellites has a short distance between the transmitting antenna and the receiving antenna in order to reduce the overall area of the antenna design, and the problem of mutual coupling interference is likely to occur, which may cause a series of problems such as a decrease in antenna performance, a limitation in frequency bandwidth, and a decrease in efficiency, which is disadvantageous for the application of the array antenna module to mobile terminals.

[0015] Therefore, as shown in FIG. 1, in the present application, an array antenna module 1 applicable to a wireless communication device (not shown) is provided to realize wireless communication based on low-orbit satellites. Here, the array antenna module 1 realizes wireless communication by transmitting and receiving wireless signals.

[0016] Continuing to refer to FIG. 1, in some embodiments of the present application, the array antenna module 1 includes a dielectric substrate 110, at least one transmitting antenna 130, at least one receiving antenna 120, at least one first decoupling element 150, and at least one second decoupling element 140. The at least one transmitting antenna 130 and the at least one receiving antenna 120 are arranged adjacent to each other and are disposed on the dielectric substrate 110. The at least one transmitting antenna 130 is used to transmit a radio signal and has a first operating frequency band. The at least one receiving antenna 120 is used to receive a radio signal and has a second operating frequency band. In some embodiments, since the distance between the at least one transmitting antenna 130 and the at least one receiving antenna 120 is close, an effect of mutual coupling interference may occur while the transmitting antenna 130 and the receiving antenna 120 are operating.

[0017] On the dielectric substrate 110, at least one first decoupling element 150 and at least one second decoupling element 140 are provided. The at least one first decoupling element 150 is disposed between the at least one transmitting antenna 130 and the at least one receiving antenna 120 and is arranged adjacent to the at least one transmitting antenna 130. The at least one second decoupling element 140 is disposed between the at least one transmitting antenna 130 and the at least one receiving antenna 120 and is arranged adjacent to the at least one receiving antenna 120. The at least one first decoupling element 150 is also spaced apart from the at least one second decoupling element 140.

[0018] In some embodiments, at least one first decoupling element 150 and at least one second decoupling element 140 may be metal components. The at least one first decoupling element 150 and the at least one second decoupling element 140 are interposed between at least one transmitting antenna 130 and at least one receiving antenna 120, and can isolate the surface current between the antennas, and further achieve a decoupling effect.

[0019] In some embodiments, the distance D between at least one transmitting antenna 130 and at least one receiving antenna 120 is 1 mm, but is not limited thereto, where there is a high likelihood of a problem of mutual coupling interference between at least one transmitting antenna 130 and at least one receiving antenna 120. In some embodiments, the distance D between at least one transmitting antenna 130 and at least one receiving antenna 120 is less than 0.7 wavelengths of the operating frequency bands of both, where there is a high likelihood of a problem of mutual coupling interference between at least one transmitting antenna 130 and at least one receiving antenna 120. In other embodiments, the distance D between at least one transmitting antenna 130 and at least one receiving antenna 120 is less than 0.1 wavelengths of the operating frequency bands of both, where at least one transmitting antenna 130 and at least one receiving antenna 120 are likely to cause a serious problem of mutual coupling interference. Exemplarily, the length of at least one first decoupling element 150 is 0.7 - 0.8 wavelengths, 0.8 - 0.9 wavelengths, 0.9 - 1.0 wavelengths, 1.0 - 1.1 wavelengths, 1.1 - 1.2 wavelengths, or 0.7 - 1.2 wavelengths of the wavelength of the operating frequency band (i.e., the first operating frequency band) of at least one transmitting antenna 130, and preferably, is 0.9 - 1.0 wavelengths of the wavelength of the operating frequency band (i.e., the first operating frequency band) of at least one transmitting antenna 130. The length of at least one second decoupling element 140 is 0.7 - 0.8 wavelengths, 0.8 - 0.9 wavelengths, 0.9 - 1.0 wavelengths, 1.0 - 1.1 wavelengths, 1.1 - 1.2 wavelengths, or 0.7 - 1.2 wavelengths of the wavelength of the operating frequency band (i.e., the second operating frequency band) of at least one receiving antenna 120, and preferably, is 0.9 - 1.0 wavelengths of the wavelength of the operating frequency band (i.e., the second operating frequency band) of at least one receiving antenna 120. At least one first decoupling element 150 and at least one transmitting antenna 130 have a first distance of 0.1 - 0.5 millimeters (mm) between them. At least one second decoupling element 140 and at least one receiving antenna 120 have a second distance of 0.1 - 0.5 millimeters between them.

[0020] As shown in FIG. 1, FIG. 1 shows an array antenna module 1 according to the first embodiment of the present application. The array antenna module 1 includes a dielectric substrate 110, a transmitting antenna 130, a receiving antenna 120, four first decoupling elements 150, and four second decoupling elements 140.

[0021] Among the four first decoupling elements 150, the ends of two adjacent first decoupling elements 150 are arranged at intervals and surround the receiving antenna 120. In some embodiments, the receiving antenna 120 is substantially circular, and the four second decoupling elements 140 are arranged at intervals along the circumferential direction of the receiving antenna 120 so as to surround the outer periphery of the receiving antenna 120. In some embodiments, each second decoupling element 140 includes a first segment 142, a second segment 144, and a third segment 146 that are sequentially connected. Here, the first segment 142 has substantially the same structure as the third segment 146. The first segment 142 and the third segment 146 are symmetrically connected to opposite ends of the second segment 144. The second segment 144 is arranged at intervals along the edge of the receiving antenna 120. In some embodiments, the second segment 144 has a substantially U shape, and the angle formed by the arms at both ends and the middle arm is an obtuse angle so as to conform to the arc edge of the receiving antenna 120. The first segment 142 and the third segment 146 each extend in a direction away from the receiving antenna 120 from one end close to the receiving antenna 120, that is, extend outward from one end close to the receiving antenna 120. In some embodiments, the first segment 142 and the third segment 146 each form a substantially L shape. One end of the first segment 142 and the third segment 146 is connected to both ends of the second segment 144 at a location close to the receiving antenna 120, and the other ends of the first segment 142 and the third segment 146 extend away from the receiving antenna 120 and then are bent in opposite directions. In some embodiments, the third segment 146 is arranged opposite to the first segment 142 of the first decoupling element 150 adjacent thereto.

[0022] The ends of two adjacent first decoupling elements 150 among the four first decoupling elements 150 are spaced apart and surround the transmitting antenna 130. In some embodiments, the transmitting antenna 130 is substantially circular. The four first decoupling elements 150 are spaced apart along the circumferential direction of the transmitting antenna 130 so as to surround the outer periphery of the transmitting antenna 130. In some embodiments, each first decoupling element 150 includes a fourth segment 152, a fifth segment 154, and a sixth segment 156 connected in sequence. Here, the fourth segment 152 has substantially the same structure as the sixth segment 156, and the fourth segment 152 and the sixth segment 156 are symmetrically connected to opposite ends of the fifth segment 154. The fifth segment 154 is spaced apart along the edge of the transmitting antenna 130. In some embodiments, the fifth segment 154 has a generally U-shape, and the angle between the arms at both ends and the middle arm is an obtuse angle so as to fit the arc edge of the transmitting antenna 130. The fourth segment 152 and the sixth segment 156 are each formed by slightly extending along a tangent to the transmitting antenna 130 and then bending them toward each other. That is, they extend inward from the edge close to the transmitting antenna 130. In some embodiments, the fourth segment 152 and the sixth segment 156 are each formed into a generally multi-stage bent shape. One end of the fourth segment 152 and the sixth segment 156 are connected to both ends of the fifth segment 154 at locations adjacent to the edge of the transmitting antenna 130, respectively, and the other ends of the fourth segment 152 and the sixth segment 156 extend close to each other and are located on approximately the same straight line.

[0023] In some other embodiments, the transmitting antenna 130 and the receiving antenna 120 may have other shapes such as rectangular, triangular, elliptical, quadrilateral, etc. It should be noted that the descriptions of the structures of the transmitting antenna 130, the receiving antenna 120, the first decoupling element 150, and the second decoupling element 140 in this specification are merely exemplary. In some other embodiments, those skilled in the art can adjust and exchange these structures according to actual needs, and this is not limited in this specification. For example, the structure of the transmitting antenna 130 can be designed to be exchanged with the structure of the receiving antenna 120, and the structure of the first decoupling element 150 can also be designed to be exchanged with the structure of the second decoupling element 140.

[0024] Refer to FIG. 2. FIG. 2 shows an array antenna module 1 according to the second embodiment of the present application. The array antenna module 1 includes a dielectric substrate 110, a transmitting antenna 130, a receiving antenna 120, a first decoupling element 150, and a second decoupling element 140. The array antenna module 1 shown in FIG. 2 can function in a specific setting environment. The specific setting environment means that the distance between the transmitting antenna 130 and the receiving antenna 120 is about 1 mm, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 - 0.5 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 - 0.5 mm.

[0025] The first decoupling element 150 surrounds the transmitting antenna 130. In some embodiments, the transmitting antenna 130 is substantially circular, the first decoupling element 150 is substantially circular, and they are arranged at intervals along the circumferential direction of the transmitting antenna 130 so as to surround the outer periphery of the transmitting antenna 130.

[0026] The second decoupling element 140 surrounds the receiving antenna 120. In some embodiments, the receiving antenna 120 is substantially circular, and the second decoupling element 140 is substantially circular and is arranged at intervals along the circumferential direction of the receiving antenna 120 so as to surround the outer periphery of the receiving antenna 120. It should be noted that the transmitting antenna 130 and the receiving antenna 120 may have other shapes such as rectangular, triangular, elliptical, quadrilateral, etc., and the first decoupling element 150 and the second decoupling element 140 respectively exhibit shapes corresponding to the transmitting antenna 130 and the receiving antenna 120, and may be arranged along the contours of the transmitting antenna 130 and the receiving antenna 120 respectively.

[0027] Referring to FIG. 3. FIG. 3 shows an array antenna module 1 according to the third embodiment of the present application. The array antenna module 1 includes a medium substrate 110, a transmitting antenna 130, a receiving antenna 120, two first decoupling elements 150, and two second decoupling elements 140. It should be noted that the array antenna module 1 shown in FIG. 3 can function in a specific setting environment where the distance between the transmitting antenna 130 and the receiving antenna 120 is about 1 mm, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 mm.

[0028] The ends of the two first decoupling elements 150 are arranged at intervals and surround the transmitting antenna 130. In some embodiments, the transmitting antenna 130 is substantially circular, each first decoupling element 150 is substantially semi-circular, and the two first decoupling elements 150 are arranged at intervals along the circumferential direction of the transmitting antenna 130 so as to surround the outer periphery of the transmitting antenna 130.

[0029] In some embodiments, the two first decoupling elements 150 are evenly distributed along the circumferential direction of the transmitting antenna 130. In some embodiments, the spacing positions of the two first decoupling elements 150 are arranged at intervals of 180 degrees along the circumferential direction of the transmitting antenna 130. The ends of the two second decoupling elements 140 are spaced apart and surround the receiving antenna 120. In some embodiments, the receiving antenna 120 is substantially circular, each second decoupling element 140 is substantially semi-circular, and the two second decoupling elements 140 are arranged at intervals along the circumferential direction of the receiving antenna 120 so as to surround the outer circumference of the receiving antenna 120.

[0030] In some embodiments, the spacing positions of the two second decoupling elements 140 are evenly distributed along the circumferential direction of the receiving antenna 120. In some embodiments, the spacing positions of the two second decoupling elements 140 are arranged at intervals of 180 degrees along the circumferential direction of the receiving antenna 120.

[0031] Refer to FIG. 4. FIG. 4 shows a cross-sectional view of the array antenna module 1 according to an embodiment of the present application. The array antenna module 1 shown in FIG. 4 can function in a specific setting environment where the distance between the transmitting antenna 130 and the receiving antenna 120 is about 1 mm, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 mm. In some embodiments, both the transmitting antenna 130 and the receiving antenna 120 are supplied with current by a direct supply method. For example, in some embodiments, the medium substrate 110 may be a multilayer medium substrate including an N-layer substrate, where N is a positive integer of 2 or more, that is, the medium substrate 110 can include the first substrate, ……, the Nth substrate. In this embodiment, the medium substrate 110 includes the stacked first substrate 111, second substrate 112, third substrate 113, fourth substrate 114, fifth substrate 115, sixth substrate 116, seventh substrate 117, eighth substrate 118, ninth substrate 119, and tenth substrate 1110. Here, on the surface of the first substrate 111 away from the second substrate 112, the transmitting antenna 130, the receiving antenna 120, the first decoupling element 150, and the second decoupling element 140 are provided. On the surface of the second substrate 112 away from the first substrate 111, a ground layer G for grounding the transmitting antenna 130 and the receiving antenna 120 is provided. The first substrate 111 is also provided with a first via 1111 and a second via 1112. Between the first substrate 111 and the second substrate 112, a first power supply line 113 and a second power supply line 114 are also provided. In this way, the first power supply line 113 can supply current to the corresponding receiving antenna 120 through the first via 1111 to excite the radiation signal corresponding to the receiving antenna 120. The second power supply line 114 can supply current to the corresponding transmitting antenna 130 through the second via 1112 to excite the radiation signal corresponding to the transmitting antenna 130.

[0032] In some embodiments, a ground layer G is provided on the surface of each layer of the second substrate 112 to the tenth substrate 1110, which is away from the first substrate 111. The array antenna module 1 further includes a radio frequency transmission front-end module 220 and a radio frequency reception front-end module 210. The radio frequency transmission front-end module 220 and the radio frequency reception front-end module 210 are respectively provided on the surface of the first substrate 111, which is the farthest from the tenth substrate 1110. The second substrate 112 to the tenth substrate 1110 are further provided with a third via 1121 and a fourth via 1122. In this way, the radio frequency reception front-end module 210 can be connected to the first power supply line 113 through the third via 1121 and further connected to the reception antenna 120 through the first via 1111, so as to realize the control of the reception antenna 120. The radio frequency transmission front-end module 220 can be connected to the second power supply line 114 through the fourth via 1122 and further connected to the transmission antenna 130 through the second via 1112, so as to realize the control of the transmission antenna 130. In some embodiments, the third via 1121 and the fourth via 1122 respectively penetrate from the second substrate 112 to the tenth substrate 1110.

[0033] Refer to FIG. 5. FIG. 5 shows a schematic diagram of the array antenna module 1 according to an embodiment of the present application. The array antenna module 1 shown in FIG. 5 can function in a specific setting environment where the distance between the transmitting antenna 130 and the receiving antenna 120 is about 1 mm, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 mm. The array antenna module 1 shown in FIG. 5 and the array antenna module 1 shown in FIG. 1 are different in that "the array antenna module 1 in FIG. 1 includes a set of transmitting antenna 130 and receiving antenna 120, and a corresponding set of first decoupling element 150 and second decoupling element 140. The array antenna module 1 in FIG. 5 includes a plurality of sets of transmitting antenna 130 and receiving antenna 120, and a corresponding plurality of sets of first decoupling element 150 and second decoupling element 140, forming an antenna array."

[0034] As shown in FIG. 5, the array antenna module 1 includes transmitting antennas 130 arranged in a plurality of rows and receiving antennas 120 arranged in a plurality of rows. Here, among the receiving antennas 120 in each row, two adjacent receiving antennas 120 are arranged at an interval of the first preset distance R1. Among the transmitting antennas 130 in each row, two adjacent transmitting antennas 130 are arranged at an interval of the second preset distance R2. And each receiving antenna 120 is arranged with its position shifted between two transmitting antennas 130. It is understood that in the present application, the magnitudes of the first preset distance R1 and the second preset distance R2 are not limited. For example, in an embodiment of the present application, the first preset distance R1 may be larger than the second preset distance R2. In another embodiment of the present application, the first preset distance R1 may be less than or equal to the second preset distance R2. Those skilled in the art can adjust the magnitude of the first preset distance R1 and the magnitude of the second preset distance R2 according to needs such as product dimension design and radiation frequency adjustment.

[0035] The plurality of transmission antennas 130 and the plurality of reception antennas 120 are installed with their positions shifted and are installed so as to form an array on the medium substrate 110. That is, in some embodiments, the transmission antennas 130 of each row and the reception antennas 120 of each row are alternately arranged on the medium substrate 110 in sequence. Thereby, in the embodiments of the present application, the transmission antennas 130 and the reception antennas 120 are mixed and alternately arranged within the same region of the medium substrate 110, which can reduce the occupied area on the medium substrate 110 and is advantageous for the miniaturization design of the array antenna module 1.

[0036] The array antenna module 1 also includes several first decoupling elements 150 and several second decoupling elements 140. Here, the number of the first decoupling elements 150 corresponds to the number of the transmission antennas 130, and the number of the second decoupling elements 140 corresponds to the number of the reception antennas 120. Each transmission antenna 130 is surrounded by a corresponding first decoupling element 150, and each reception antenna 120 is surrounded by a corresponding second decoupling element 140. Note that the first decoupling element 150 and the second decoupling element 140 may be in a form in which one, two, or four combinations disclosed by the above-described embodiments surround the transmission antenna 130 and the reception antenna 120, and will not be described further herein.

[0037] In the present application, the shapes and areas of the transmission antenna 130 and the reception antenna 120 are not specifically limited, and those skilled in the art can adjust them as needed. In some embodiments, the area of the transmission antenna 130 is smaller than the area of the reception antenna 120, whereby the transmission antenna 130 can transmit a radiation signal at a higher frequency with respect to the reception antenna 120. In another embodiment of the present application, the area of the transmission antenna 130 may be larger than the area of the reception antenna 120, whereby the transmission antenna 130 can transmit a radiation signal at a lower frequency with respect to the reception antenna 120. In another embodiment of the present application, the area of the transmission antenna 130 may be equal to the area of the reception antenna 120, whereby the transmission antenna 130 can transmit a radiation signal at the same frequency as the reception antenna 120. Further, the transmission antenna 130 and the reception antenna 120 may be conductors of other shapes such as an ellipse or a rectangle.

[0038] It is understood that in the present application, the magnitudes of the first preset distance R1 and the second preset distance R2 are not limited. In some embodiments, the first preset distance R1 and the second preset distance R2 may be equal or may not be equal.

[0039] Referring to FIGS. 5 and 6 together, the array antenna module 1 shown in FIG. 5 includes a 32*32 transmitting antenna 130 and a 32*32 receiving antenna 120, and the array antenna module 1 shown in FIG. 6 includes a 2*2 transmitting antenna 130 and a 32*32 receiving antenna 120. Those skilled in the art can set and adjust the array antenna module 1 according to actual needs, such as 4*4 or 32*32 transmitting antennas 130 and 4*4 or 32*32 receiving antennas 120, which will not be described individually herein. It should be noted that the array antenna module 1 shown in FIGS. 5 and 6 can function in a specific setting environment. The specific setting environment means that the distance between the transmitting antenna 130 and the receiving antenna 120 is about 1 mm, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 mm.

[0040] Refer to FIGS. 7A to 7D. FIGS. 7A to 7D are schematic diagrams of corresponding electric field distributions in different operating modes of the array antenna module 1 provided in the embodiments of the present application. Here, FIG. 7A is a schematic diagram of the electric field distribution when the transmitting antenna 130 and the receiving antenna 120 are respectively surrounded by the first decoupling element 150 and the second decoupling element 140, the transmitting antenna 130 is turned on, and the receiving antenna 120 is turned off. FIG. 7B is a schematic diagram of the electric field distribution when the transmitting antenna 130 and the receiving antenna 120 are respectively surrounded by the first decoupling element 150 and the second decoupling element 140, the transmitting antenna 130 is turned off, and the receiving antenna 120 is turned on. FIG. 7C is a schematic diagram of the electric field distribution when the transmitting antenna 130 and the receiving antenna 120 do not include the first decoupling element 150 and the second decoupling element 140, the transmitting antenna 130 is turned on, and the receiving antenna 120 is turned off. FIG. 7D is a schematic diagram of the electric field distribution when the transmitting antenna 130 and the receiving antenna 120 do not include the first decoupling element 150 and the second decoupling element 140, the transmitting antenna 130 is turned off, and the receiving antenna 120 is turned on. From the schematic diagrams of the electric field distributions in FIGS. 7A - 7D, it can be seen that when the first decoupling element 150 and the second decoupling element 140 are added, the electric field energy is concentrated on the transmitting antenna 130 and the receiving antenna 120, and the influence of mutual interference is extremely small. When the first decoupling element 150 and the second decoupling element 140 are not added, the electric field energies of the transmitting antenna 130 and the receiving antenna 120 are coupled to each other and affect each other. The array antenna module 1 shown in FIGS. 7A to 7D can function in a specific setting environment. The specific setting environment means that the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 mm. More specifically, in FIGS. 7A to 7D, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 mm.

[0041] Refer to FIGS. 8A and 8B. FIGS. 8A and 8B are curve diagrams showing return loss and isolation corresponding to the case where a decoupling element is provided and the case where it is not provided in the array antenna module 1 provided according to an embodiment of the present application. Here, FIG. 8A shows curves of S-parameters and isolation in a preset operating frequency band when the transmitting antenna 130 and the receiving antenna 120 do not include the first decoupling element 150 and the second decoupling element 140. Among them, curve S81 is the S-parameter curve of the transmitting antenna 130, curve S82 is the S-parameter curve of the receiving antenna 120, and curve S83 is the curve showing the isolation between the transmitting antenna 130 and the receiving antenna 120.

[0042] FIG. 8B shows curves of S-parameters and isolation in a preset operating frequency band when the transmitting antenna 130 and the receiving antenna 120 are respectively surrounded by the first decoupling element 150 and the second decoupling element 140. Among them, curve S84 is the S-parameter curve of the transmitting antenna 130, curve S85 is the S-parameter curve of the receiving antenna 120, and curve S86 is the isolation curve between the transmitting antenna 130 and the receiving antenna 120. From the isolation curve schematic diagrams of FIGS. 8A and 8B, it can be seen that when the transmitting antenna 130 and the receiving antenna 120 are respectively surrounded by the first decoupling element 150 and the second decoupling element 140, in a preset operating frequency band (for example, the low-earth orbit satellite KuBand transmission band, 14.0 GHz - 14.5 GHz), the isolation between the transmitting antenna 130 and the receiving antenna 120 increases by about 10 decibels (dB). The array antenna module 1 shown in FIGS. 8A and 8B can function in a specific installation environment. The specific installation environment means that the distance between the transmitting antenna 130 and the receiving antenna 120 is about 1 mm, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 - 0.5 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 - 0.5 mm. More specifically, in FIGS. 8A and 8B, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 mm.

[0043] Refer to FIGS. 9A and 9B. FIGS. 9A and 9B are schematic diagrams of radiation gain curves corresponding to the case where a decoupling element is provided and the case where it is not provided in the array antenna module 1 provided in the embodiment of the present application, respectively. Here, FIG. 9A is a diagram showing curves of radiation gain corresponding to a preset reception band when the array antenna module 1 provided according to the embodiment of the present application includes and does not include a decoupling element. Curve S91 is a curve of the radiation gain of the receiving antenna 120 corresponding to a preset reception band (for example, a low-earth orbit satellite KuBand reception band, 10.7 GHz - 12.7 GHz) when the first decoupling element 150 and the second decoupling element 140 are not included. Curve S92 is a curve of the radiation gain of the receiving antenna 120 corresponding to a preset reception band (for example, a low-earth orbit satellite KuBand reception band, 10.7 GHz - 12.7 GHz) when the transmitting antenna 130 and the receiving antenna 120 are respectively surrounded by the first decoupling element 150 and the second decoupling element 140. FIG. 9B is a schematic diagram of radiation gain curves corresponding to a preset reception band when the array antenna module 1 provided according to the embodiment of the present application includes and does not include a decoupling element. Among them, curve S93 is a curve of the radiation gain of the transmitting antenna 130 corresponding to a preset transmission band (for example, a low-earth orbit satellite KuBand transmission band, 14.0 GHz - 14.5 GHz) when the first decoupling element 150 and the second decoupling element 140 are not included. Curve S94 is a curve of the radiation gain of the transmitting antenna 130 corresponding to a preset transmission band (for example, a low-earth orbit satellite KuBand transmission band, 14.0 GHz - 14.5 GHz) when the transmitting antenna 130 and the receiving antenna 120 are respectively surrounded by the first decoupling element 150 and the second decoupling element 140.From the radiation gain curves of FIGS. 9A and 9B, when the transmitting antenna 130 and the receiving antenna 120 are respectively surrounded by the first decoupling element 150 and the second decoupling element 140, in a preset operating frequency band (for example, the low-earth orbit satellite KuBand transmission band, 14.0 GHz - 14.5 GHz), the radiation gain of the transmitting antenna 130 is increased by about 2 - 3 dB. On the other hand, in a preset operating frequency band (for example, the low-earth orbit satellite KuBand reception band, 10.7 GHz - 12.7 GHz), the radiation gain of the receiving antenna 120 is slightly affected. The array antenna module 1 shown in FIGS. 9A and 9B can function in a specific installation environment. The specific installation environment means that the distance between the transmitting antenna 130 and the receiving antenna 120 is about 1 mm, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 - 0.5 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 - 0.5 mm. More specifically, in FIGS. 9A and 9B, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 mm.

[0044] FIG. 10 is a schematic curve diagram showing the corresponding isolation when the array antenna module 1 provided in the embodiment of the present application is provided with different decoupling elements. Here, curve S101 is the isolation curve when the transmitting antenna 130 and the receiving antenna 120 do not include the first decoupling element 150 and the second decoupling element 140. Curve S102 is the isolation curve when the transmitting antenna 130 and the receiving antenna 120 shown in FIG. 2 are each surrounded by one decoupling element. Curve S103 is the isolation curve when the transmitting antenna 130 and the receiving antenna 120 shown in FIG. 3 are each surrounded by two decoupling elements. When having the first decoupling element 150, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm. When having the second decoupling element 140, the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 mm. As can be seen from the schematic diagram of the isolation curve in FIG. 10, by installing one or more decoupling elements around the transmitting antenna 130 and the receiving antenna 120, a certain decoupling effect can be achieved between the transmitting antenna 130 and the receiving antenna 120.

[0045] Figures 11A to 11D are schematic diagrams of the case where the array antenna module 1 provided according to the embodiment of the present application installs decoupling elements of different shapes. As shown in FIGS. 11A and 11B, at least one decoupling element 161 is provided between the transmitting antenna 130 and the receiving antenna 120. Here, FIG. 11A shows a single decoupling element 161, and FIG. 11B shows decoupling elements 161A and 161B arranged at intervals. In some embodiments, the decoupling elements 161A and 161B are rectangular metal segments having substantially different lengths, respectively. Here, the decoupling element 161A may also be a second decoupling element, is provided close to the receiving antenna 120, has a length of 0.9 to 1.0 wavelengths of the operating frequency band of the receiving antenna 120 (i.e., the second operating frequency band), and has a relatively long length in the embodiment of FIG. 11B. The decoupling element 161B may be a first decoupling element arranged near the transmitting antenna 130. The length of the decoupling element 161B is 0.9 to 1.0 wavelengths of the wavelength of the operating frequency band of the transmitting antenna 130 (i.e., the first operating frequency band), and has a relatively short length in the embodiment of FIG. 11B. As shown in FIG. 11C, the receiving antenna 120 is surrounded by a second decoupling element 162, and the transmitting antenna 130 is surrounded by a first decoupling element 163. In some embodiments, the structure of the second decoupling element 162 is substantially similar to the structure of the first decoupling element 150 shown in FIG. 1, and the structure of the first decoupling element 163 is substantially similar to the structure of the second decoupling element 140 shown in FIG. 1. That is, the structures of the second decoupling element 162 and the first decoupling element 163 shown in FIG. 11C are interchanged with the structures of the first decoupling element 150 and the second decoupling element 140 shown in FIG. 1. As shown in FIG. 11D, the transmitting antenna 130 is surrounded by a first decoupling element 165, and the receiving antenna 120 is surrounded by a second decoupling element 164. In some embodiments, the first decoupling element 165 and the second decoupling element 164 are composed of four rectangular metal plates arranged at intervals along the peripheral edges of the transmitting antenna 130 and the receiving antenna 120, respectively.A first decoupling element 165 or a second decoupling element 164 may be provided between the transmission antenna 130 and the reception antenna 120. The array antenna module 1 shown in FIGS. 11A to 11D can function in a specific setting environment where the distance between the transmission antenna 130 and the reception antenna 120 is about 1 mm, the first distance between the first decoupling element 150 and the transmission antenna 130 is 0.1 to 0.5 mm, and the second distance between the second decoupling element 140 and the reception antenna 120 is 0.1 to 0.5 mm.

[0046] Refer to FIGS. 12A and 12B. FIGS. 12A and 12B are respectively schematic diagrams of the corresponding isolation curves when the array antenna module 1 provided according to the embodiment of the present application installs decoupling elements of different shapes. Here, FIG. 12A is a diagram showing the isolation between the transmitting antenna 130 and the receiving antenna 120 when the array antenna module 1 installs the first decoupling element 150 and the second decoupling element 140 as shown in FIG. 1, and this isolation may be less than -20 dB. FIG. 12B is a diagram showing the isolation between the transmitting antenna 130 and the receiving antenna 120 when the array antenna module 1 installs the first decoupling element 150 and the second decoupling element 140 with a different shape as shown in FIG. 1, and this isolation may be less than -15 dB. Here, compared with the shape of the second decoupling element 140 shown in FIG. 1, the first segment 142 and the third segment 146 of the second decoupling element shown in FIG. 12B extend in the direction approaching the edge of the receiving antenna 120 from both ends of the second segment 144, that is, they extend inward toward the receiving antenna 120. Due to the different shapes of the second decoupling element 140 in FIGS. 12A and 12B, the isolation characteristics between the transmitting antenna 130 and the receiving antenna 120 can produce a difference of about 5 to 10 dB. The array antenna module 1 shown in FIGS. 12A and 12B can function in a specific setting environment where the distance between the transmitting antenna 130 and the receiving antenna 120 is about 1 mm, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 mm. More specifically, in FIGS. 12A and 12B, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 mm.

[0047] Refer to FIG. 13. FIG. 13 is a schematic diagram of the corresponding isolation curve when the array antenna module 1 provided according to the embodiment of the present application installs decoupling elements of different lengths. Here, curve S132 shows the isolation corresponding to the case where the length of the decoupling element provided for the array antenna module 1 is 1.0 wavelength of the operating frequency band wavelength of the transmitting antenna and the receiving antenna. In this setting, it can be seen that the isolation in the low-earth orbit satellite KuBand transmission band of 14 - 14.5 GHz is less than -20 dB. Curve S134 shows the isolation corresponding to the case where the length of the decoupling element provided for the array antenna module 1 is 1.2 wavelengths of the operating frequency band wavelength of the transmitting antenna and the receiving antenna. In this setting, it can be seen that the isolation in the low-earth orbit satellite KuBand transmission band of 14 - 14.5 GHz is less than -15 dB. Curve S136 shows the isolation corresponding to the case where the length of the decoupling element provided for the array antenna module 1 is 0.8 wavelength of the operating frequency band wavelength of the transmitting antenna and the receiving antenna. In this setting, it can be seen that the isolation in the low-earth orbit satellite KuBand transmission band of 14 - 14.5 GHz is less than -10 dB. Also, the isolation curves shown in FIG. 13 reflect the operation in a specific setting environment. The specific setting environment means that the distance between the transmitting antenna and the receiving antenna is about 1 mm, the first distance between the first decoupling element and the transmitting antenna is 0.1 - 0.5 mm, and the second distance between the second decoupling element and the receiving antenna is 0.1 - 0.5 mm. More specifically, in FIG. 13, the first distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 mm, and the second distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 mm.As can be seen, when the first distance between the first decoupling element and the transmitting antenna is 0.1 to 0.5 mm, and the second distance between the second decoupling element and the receiving antenna is 0.1 to 0.5 mm, when the length of the decoupling element is 0.9 to 1.0 wavelengths of the operating frequency band wavelength of the transmitting antenna and the receiving antenna, isolation corresponding to the low-earth orbit satellite KuBand transmission band of 14 to 14.5 GHz is preferable (see curve S132 in Fig. 13).

[0048] The array antenna module 1 provided in this specification installs at least one first decoupling element 150 between at least one transmitting antenna 130 and at least one receiving antenna 120, and provides the first decoupling element 150 so as to be adjacent to at least one transmitting antenna 130. At the same time, at least one second decoupling element 140 is arranged between at least one transmitting antenna 130 and at least one receiving antenna 120, and the second decoupling element 140 is provided so as to be adjacent to at least one receiving antenna 120. Thereby, the mutual coupling interference between at least one transmitting antenna 130 and at least one receiving antenna 120 can be effectively reduced, the performance of at least one transmitting antenna 130 and at least one receiving antenna 120 can be guaranteed, and the stability of the array antenna module 1 can be improved so that it can be applied to more wireless communication devices.

[0049] The above embodiments are used only for explaining the technical aspects of the present invention, not for limitation. Although the present invention has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that they must not depart from the spirit and scope of the technical aspects of the present invention even if they modify or equivalently replace the technical aspects of the present invention. Those skilled in the art can also perform designs used in the present invention, such as other changes within the spirit of the present invention, as long as they do not deviate from the technical effects of the present invention. All changes based on the spirit of the present invention should be included within the scope of protection required by the present invention.

Explanation of reference numerals

[0050] 1 Array Antenna Module 110 Media Substrate 130 Transmission Antenna 120 Reception Antenna 150, 163, 165 First Decoupling Element 140, 162, 164 Second Decoupling Element 142 First Segment 144 Second Segment 146 Third Segment 152 Fourth Segment 154 Fifth Segment 156 Sixth Segment 111 First Substrate 112 Second Substrate 1111 First Via 1112 Second Via 1121 Third Via 1122 Fourth Via 113 First Feeding Line 114 Second Feeding Line G Ground Layer 220 Radio Frequency Transmission Front-End Module 210 Radio Frequency Reception Front-End Module 161 Decoupling Element

Claims

1. A media substrate; at least one transmitting antenna and at least one receiving antenna disposed adjacent to each other on the medium substrate; at least one decoupling element; the decoupling element is disposed on the medium substrate and at least partially disposed between the at least one transmitting antenna and the at least one receiving antenna to increase isolation between the transmitting antenna and the receiving antenna; the at least one decoupling element includes a first decoupling element or a second decoupling element; the first decoupling element is disposed between the at least one transmitting antenna and the at least one receiving antenna and adjacent to the at least one transmitting antenna; An array antenna module, characterized in that the second decoupling element is disposed between the at least one transmitting antenna and the at least one receiving antenna and is disposed adjacent to the at least one receiving antenna.

2. The array antenna module of claim 1, characterized in that the length of the first decoupling element is 0.9 to 1.0 wavelength of the operating band wavelength of the at least one transmitting antenna, and the length of the second decoupling element is 0.9 to 1.0 wavelength of the operating band wavelength of the at least one receiving antenna.

3. 2. The array antenna module of claim 1, wherein the first decoupling element surrounds the at least one transmitting antenna and the second decoupling element surrounds the at least one receiving antenna.

4. 2. The array antenna module of claim 1, wherein the at least one transmitting antenna is surrounded by two spaced apart first decoupling elements and the at least one receiving antenna is surrounded by two spaced apart second decoupling elements.

5. The at least one transmitting antenna is surrounded by four first decoupling elements arranged at intervals, and ends of two adjacent first decoupling elements among the four first decoupling elements are arranged at intervals; the at least one receive antenna is surrounded by four spaced apart second decoupling elements; 2. The array antenna module according to claim 1, wherein the ends of two adjacent second decoupling elements among the four second decoupling elements are spaced apart.

6. Each of the first decoupling elements includes a first segment, a second segment, and a third segment connected in series; the first segment and the third segment are symmetrically connected to opposite ends of the second segment; the second segments are spaced apart along an edge of the at least one transmitting antenna; the first segment and the third segment each extend from one end adjacent the at least one transmitting antenna in a direction away from the receiving antenna; Each of the second decoupling elements includes a fourth segment, a fifth segment, and a sixth segment connected in series; the fourth segment and the sixth segment are symmetrically connected to opposite ends of the fifth segment; the fifth segments are spaced apart along an edge of the at least one receive antenna; The array antenna module of claim 5, wherein the fourth segment and the sixth segment are each formed by extending along a tangent to the at least one receiving antenna and then bending them toward each other.

7. The two adjacent first decoupling elements are equally spaced apart along a circumferential direction of the at least one transmitting antenna; 6. The array antenna module according to claim 5, wherein adjacent two of the second decoupling elements are distributed at equal intervals along a circumferential direction of the at least one receiving antenna.

8. The array antenna module includes the transmitting antennas arranged in a plurality of rows, and the receiving antennas arranged in a plurality of rows, In each row, two adjacent receive antennas are spaced apart by a first preset distance; In each row, two adjacent transmitting antennas are spaced apart by a second preset distance; Each of the receiving antennas is disposed between two of the transmitting antennas in a staggered manner; the transmitting antennas in each row and the receiving antennas in each row are offset from one another and disposed to form an array on the medium substrate; 2. The array antenna module of claim 1, wherein each of the transmitting antennas is surrounded by the first decoupling element, and each of the receiving antennas is surrounded by the second decoupling element.

9. The medium substrate includes a first substrate to an Nth substrate stacked together, where N is a positive integer of 2 or more; The at least one transmitting antenna and the at least one receiving antenna are provided on a surface of the first substrate farther from the N substrate, and a ground layer is provided on a surface of the N substrate farther from the first substrate; 2. The array antenna module of claim 1, wherein a first feed line and a second feed line are provided between the first substrate and the Nth substrate, and the first substrate further includes a first via and a second via, both ends of the first via respectively corresponding to the at least one receiving antenna and the first feed line, the at least one receiving antenna being fed via the first via and the first feed line, and both ends of the second via respectively corresponding to the at least one transmitting antenna and the second feed line, the at least one transmitting antenna being fed via the second via and the second feed line.

10. A wireless communication device comprising the array antenna module according to any one of claims 1 to 9.

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