Array antenna module and wireless communication device

Abstract

The invention discloses an array antenna module and a wireless communication device. The array antenna module comprises a dielectric substrate; at least one transmitting antenna and at least one receiving antenna, the at least one transmitting antenna and the at least one receiving antenna are arranged adjacent to each other and are arranged on the dielectric substrate; at least one first decoupling element and at least one second decoupling element, the at least one first decoupling element and the at least one second decoupling element are arranged on the dielectric substrate, and the at least one first decoupling element is arranged between the at least one transmitting antenna and the at least one receiving antenna and is arranged adjacent to the at least one transmitting antenna; the at least one 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, so as to improve the isolation between the transmitting antenna and the at least one receiving antenna.

Description

Technical Field

[0001] The present invention relates to the technical field of antennas, and in particular, to an array antenna module and a wireless communication device. Background Art

[0002] A low-orbit satellite system (LEO) is a large satellite system composed of multiple satellites that can perform real-time information processing. Low-orbit satellites are also used for communication of mobile terminals such as mobile phones. Due to the low orbit altitude, mobile terminals using low-orbit satellite communication have the advantages of short transmission delay and small path loss. A mobile communication system composed of multiple low-orbit satellites can achieve true global coverage, and frequency reuse is more effective. Technologies such as cellular communication, multiple access, spot beam, and frequency reuse also provide technical guarantees for the application of low-orbit satellites in mobile communication. In short, low-orbit satellites are currently highly promising mobile communication systems.

[0003] However, for the existing array antenna modules applied to low-orbit satellites, in order to reduce the overall area of the antenna design, the arrangement distance between the transmitting antenna and the receiving antenna is relatively close. For example, when the distance is less than 0.7 wavelength of the antenna operating frequency band, problems such as mutual coupling interference are likely to occur, which may lead to a series of problems such as antenna performance degradation, bandwidth limitation, and efficiency reduction, and is not conducive to the application of the array antenna module in mobile terminals. When the arrangement distance between the transmitting antenna and the receiving antenna is too close, for example, when the distance is less than 0.1 wavelength of the antenna operating frequency band, serious mutual coupling interference problems are likely to occur between the antennas, which may cause each antenna in the array antenna to not work independently and it is difficult to maintain stable performance. Summary of the Invention

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

[0005] The first aspect of the present application provides an array antenna module, including:

[0006] A dielectric substrate;

[0007] At least one transmitting antenna and at least one receiving antenna, the at least one transmitting antenna and the at least one receiving antenna are adjacent to each other and are disposed on the dielectric substrate;

[0008] At least one first decoupling element and at least one second decoupling element, the at least one first decoupling element and the at least one second decoupling element are disposed on the dielectric substrate, the at least one first 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 transmitting antenna; the at least one 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.

[0009] The second aspect of the present application further provides a wireless communication device, including the array antenna module according to any one of the above.

[0010] It can be understood that the array antenna module provided by the present application sets at least one first decoupling element between at least one transmitting antenna and at least one receiving antenna, and is disposed adjacent to at least one transmitting antenna, and sets at least one second decoupling element between at least one transmitting antenna and at least one receiving antenna, and is disposed adjacent to at least one receiving antenna, which can effectively reduce the mutual coupling interference between at least one transmitting antenna and at least one receiving antenna, ensure the performance of at least one transmitting antenna and at least one receiving antenna, improve stability, and make the array antenna module applicable to more wireless communication devices. Description of the Drawings

[0011] Figure 1 It is a schematic diagram of the array antenna module provided by the first embodiment of the present application.

[0012] Figure 2 It is a schematic diagram of the array antenna module provided by the second embodiment of the present application.

[0013] Figure 3 It is a schematic diagram of the array antenna module provided by the third embodiment of the present application.

[0014] Figure 4 It is a cross-sectional view of the array antenna module according to an embodiment of the present application.

[0015] Figure 5 It is a schematic diagram of the array antenna module according to an embodiment of the present application.

[0016] Figure 6 It is a schematic diagram of the array antenna module according to another embodiment of the present application.

[0017] Figures 7A - 7D It is a schematic diagram of the corresponding electric field distribution of the array antenna module provided by the embodiment of the present application in different working modes.

[0018] Figures 8A - 8B It is a schematic diagram of the curves of return loss and isolation corresponding to whether the array antenna module provided by the embodiment of the present application is provided with a decoupling element.

[0019] Figures 9A - 9B It is a schematic diagram of the curves of radiation gain corresponding to whether the array antenna module provided by the embodiment of the present application is provided with a decoupling element.

[0020] Figure 10 It is a schematic diagram of the curves of isolation corresponding to different decoupling elements provided in the array antenna module provided by the embodiment of the present application.

[0021] Figures 11A - 11DDecoupling elements of different shapes are provided for the array antenna module according to the embodiments of the present application.

[0022] Figures 12A - 12B Schematic diagram of the isolation curve corresponding to setting decoupling elements of different shapes for the array antenna module according to the embodiments of the present application.

[0023] Figure 13 Schematic diagram of the isolation curve corresponding to setting decoupling elements of different lengths for the array antenna module according to the embodiments of the present application.

[0024] Description of main component symbols

[0025] Array antenna module 1; dielectric substrate 110; transmitting antenna 130; receiving antenna 120; first decoupling elements 150, 163, 165; second decoupling elements 140, 162, 164;

[0026] First section 142; second section 144; third section 146; fourth section 152; fifth section 154; sixth section 156;

[0027] First substrate 111; second substrate 112; first via 1111; second via 1112; third via 1121; fourth via 1122; first feeder 113; second feeder 114; ground layer G;

[0028] RF transmitting front-end module 220; RF receiving front-end module 210; decoupling element 161.

[0029] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific embodiments

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be noted that when an element is referred to as being "electrically connected" to another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "electrically connected" to another element, it can be a contact connection, for example, in the form of a wire connection, or a non-contact connection, for example, in the form of a non-contact coupling.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of this invention herein are for the purpose of describing specific embodiments only and are not intended to limit the invention.

[0033] The following will, with reference to the accompanying drawings, elaborate on some embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0034] A low-orbit satellite system (LEO) is a large satellite system composed of multiple satellites that can perform real-time information processing. Low-orbit satellites are also used for communication of mobile terminals such as mobile phones. Due to the low orbit altitude, mobile terminals using low-orbit satellite communication have the advantages of short transmission delay and small path loss. A mobile communication system composed of multiple low-orbit satellites can achieve true global coverage and more efficient frequency reuse. Technologies such as cellular communication, multiple access, spot beam, and frequency reuse also provide technical guarantees for the application of low-orbit satellites in mobile communication. All in all, low-orbit satellites are currently highly regarded mobile communication systems.

[0035] However, for the existing array antenna module applied to low-orbit satellites, in order to reduce the overall area of the antenna design, the arrangement distance between the transmitting antenna and the receiving antenna is relatively close, which is prone to the problem of mutual coupling interference, thus possibly leading to a series of problems such as antenna performance degradation, bandwidth limitation, and efficiency reduction, which is not conducive to the application of the array antenna module in mobile terminals.

[0036] For this reason, please refer to Figure 1 simultaneously, this application provides an array antenna module 1, which can be applied to a wireless communication device (not shown in the figure) to realize wireless communication of the wireless communication device based on low-orbit satellites. Among them, the array antenna module 1 is used to transmit or receive wireless signals to realize wireless communication.

[0037] Please continue to refer to Figure 1 simultaneously, in some embodiments of this 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.

[0038] At least one transmitting antenna 130 and at least one receiving antenna 120 are arranged adjacent to each other and are disposed on a dielectric substrate 110. The at least one transmitting antenna 130 is used for transmitting wireless signals and has a first operating frequency band. The at least one receiving antenna 120 is used for receiving wireless signals 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 arranged adjacent to each other is relatively close, mutual coupling interference effects may occur when the at least one transmitting antenna 130 and the at least one receiving antenna 120 are operating.

[0039] At least one first decoupling element 150 and at least one second decoupling element 140 are disposed on the dielectric substrate 110. 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. And the at least one first decoupling element 150 is also spaced apart from the at least one second decoupling element 140.

[0040] In some embodiments, the at least one first decoupling element 150 and the at least one second decoupling element 140 may be metal parts. The at least one first decoupling element 150 and the at least one second decoupling element 140 are located between the at least one transmitting antenna 130 and the at least one receiving antenna 120, and can achieve isolation of the surface currents between the antennas, thereby achieving a decoupling effect.

[0041] In some embodiments, the spacing D between at least one transmitting antenna 130 and at least one receiving antenna 120 may be, but is not limited to, 1 millimeter, where there is a problem of mutual coupling interference easily occurring between at least one transmitting antenna 130 and at least one receiving antenna 120. In some embodiments, the spacing D between at least one transmitting antenna 130 and at least one receiving antenna 120 is less than 0.7 wavelengths of their operating frequency bands, where there is a problem of mutual coupling interference easily occurring between at least one transmitting antenna 130 and at least one receiving antenna 120. In other embodiments, the spacing D between at least one transmitting antenna 130 and at least one receiving antenna 120 is less than 0.1 wavelengths of their operating frequency bands, where there is a serious problem of mutual coupling interference between at least one transmitting antenna 130 and at least one receiving antenna 120. Exemplarily, the length of at least one first decoupling element 150 is 0.7 to 0.8 wavelengths, 0.8 to 0.9 wavelengths, 0.9 to 1.0 wavelengths, 1.0 to 1.1 wavelengths, 1.1 to 1.2 wavelengths, or 0.7 to 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, preferably 0.9 to 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 component 140 is 0.7 to 0.8 wavelengths, 0.8 to 0.9 wavelengths, 0.9 to 1.0 wavelengths, 1.0 to 1.1 wavelengths, 1.1 to 1.2 wavelengths, or 0.7 to 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, preferably 0.9 to 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 spacing distance, and the first spacing distance can be 0.1 to 0.5 millimeters (mm). At least one second decoupling element 140 and at least one receiving antenna 120 have a second spacing distance, and the second spacing distance can be 0.1 to 0.5 millimeters.

[0042] Please refer to Figure 1 , Figure 1 Provided is an array antenna module 1 according to the first embodiment of the present application, including a dielectric substrate 110, a transmitting antenna 130, a receiving antenna 120, four first decoupling elements 150, and four second decoupling elements 140.

[0043] Four second decoupling elements 140 are arranged in sequence with their heads and tails alternating, and surround the receiving antenna 120. In some embodiments, the receiving antenna 120 is generally circular, and the four second decoupling elements 140 are arranged at intervals along the circumferential direction of the receiving antenna 120 to surround the outside of the periphery of the receiving antenna 120. In some embodiments, each second decoupling element 140 includes a first section 142, a second section 144, and a third section 146 connected in sequence. Among them, the structures of the first section 142 and the third section 146 are substantially the same, and the first section 142 and the third section 146 are symmetrically connected to opposite ends of the second section 144. The second section 144 is arranged at intervals along the edge of the receiving antenna 120. In some embodiments, the second section 144 is generally U-shaped, and the included angle between the two end arms and the middle arm is an obtuse angle so that the second section 144 fits the arc edge of the receiving antenna 120. The first section 142 and the third section 146 extend from the edge adjacent to the receiving antenna 120 towards the edge away from the receiving antenna 120, that is, extend outward from the edge adjacent to the receiving antenna 120. In some embodiments, the first section 142 and the third section 146 are respectively generally L-shaped. One end of the first section 142 and the third section 146 are respectively connected to the ends of the second section 144 at positions adjacent to the edge of the receiving antenna 120, and the other end extends outward and then bends towards the opposite direction. In some embodiments, the third section 146 is arranged opposite to the first section 154 of the adjacent first decoupling element 150.

[0044] Four first decoupling elements 150 are arranged in sequence with their heads and tails alternating, and surround the transmitting antenna 130. In some embodiments, the transmitting antenna 130 is generally circular, and the four first decoupling elements 150 are arranged at intervals along the circumferential direction of the transmitting antenna 130 to surround the outside of the periphery of the transmitting antenna 130. In some embodiments, each first decoupling element 150 includes a fourth section 152, a fifth section 154, and a sixth section 156 connected in sequence. Among them, the structures of the fourth section 152 and the sixth section 156 are substantially the same, and the fourth section 152 and the sixth section 156 are symmetrically connected to opposite ends of the fifth section 154. The fifth section 154 is arranged at intervals along the edge of the transmitting antenna 130. In some embodiments, the fifth section 154 is generally U-shaped, and the included angle between the two end arms and the middle arm is an obtuse angle so that the fifth section 154 fits the arc edge of the transmitting antenna 130. The fourth section 152 and the sixth section 156 extend from the edge adjacent to the transmitting antenna 130 towards the edge close to the transmitting antenna 130 and then bend towards the opposite direction, that is, extend inward from the edge adjacent to the transmitting antenna 130. In some embodiments, the fourth section 152 and the sixth section 156 are respectively generally multi-segment bent shapes. One end of the fourth section 152 and the sixth section 156 are respectively connected to the ends of the fourth section 152 at positions adjacent to the edge of the transmitting antenna 130, and the other end extends inward and then bends towards the opposite direction. In some embodiments, the sixth section 156 is arranged opposite to the fourth section 152 of the adjacent second decoupling element 140.

[0045] In some other embodiments, the transmitting antenna 130 and the receiving antenna 120 may also be of other shapes, such as rectangular, triangular, elliptical, quadrilateral, etc. It can be understood 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 application are only exemplary. In some other embodiments, these structures can be adjusted and interchanged by those skilled in the art according to actual needs, and this application does not limit this here. For example, the structures of the transmitting antenna 130 and the receiving antenna 120 are interchanged, and at the same time, the structures of the first decoupling element 150 and the second decoupling element 140 are also interchanged.

[0046] Please refer to Figure 2 , Figure 2 The array antenna module 1 according to the second embodiment of the present application is provided, including a dielectric substrate 110, a transmitting antenna 130, a receiving antenna 120, a first decoupling element 150, and a second decoupling element 140. It can be understood that Figure 2 The illustrated array antenna module 1 can be carried out in a specific setting environment. The specific setting environment can be that the distance between the transmitting antenna 130 and the receiving antenna 120 is approximately 1 millimeter, the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 millimeters, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 millimeters.

[0047] The first decoupling element 150 surrounds the transmitting antenna 130. In some embodiments, the transmitting antenna 130 is generally circular, the first decoupling element 150 is generally circular, and is spaced along the circumferential direction of the transmitting antenna 130 to surround the outer side of the periphery of the transmitting antenna 130.

[0048] The second decoupling element 140 surrounds the receiving antenna 120. In some embodiments, the receiving antenna 120 is generally circular, the second decoupling element 140 is generally circular, and is spaced along the circumferential direction of the receiving antenna 120 to surround the outer side of the periphery of the receiving antenna 120. It can be understood that when the transmitting antenna 130 and the receiving antenna 120 can also be of other shapes, such as rectangular, triangular, elliptical, quadrilateral, etc., the first decoupling element 150 and the second decoupling element 140 can also be respectively in shapes corresponding to the transmitting antenna 130 and the receiving antenna 120, and are respectively arranged along the outer contour of the transmitting antenna 130 and the receiving antenna 120.

[0049] Please refer to Figure 3 , Figure 3An array antenna module 1 according to a third embodiment of the present application is provided, which includes a dielectric substrate 110, a transmitting antenna 130, a receiving antenna 120, two first decoupling elements 150, and two second decoupling elements 140. It can be understood that Figure 3 The illustrated array antenna module 1 can be carried out in a specific setting environment, and the specific setting environment can be that the spacing between the transmitting antenna 130 and the receiving antenna 120 is approximately 1 mm, the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 mm.

[0050] The two first decoupling elements 150 are arranged end to end in sequence with 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 to surround the outside of the circumference of the transmitting antenna 130.

[0051] In some embodiments, the interval positions of the two first decoupling elements 150 are equally spaced along the circumferential direction of the transmitting antenna 130. In some embodiments, the interval positions of the two first decoupling elements 150 are arranged at intervals of every 180 degrees along the circumferential direction of the transmitting antenna 130.

[0052] The two second decoupling elements 140 are arranged end to end in sequence with intervals, 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 to surround the outside of the circumference of the receiving antenna 120.

[0053] In some embodiments, the interval positions of the two second decoupling elements 140 are equally spaced along the circumferential direction of the receiving antenna 120. In some embodiments, the interval positions of the two second decoupling elements 140 are arranged at intervals of every 180 degrees along the circumferential direction of the receiving antenna 120.

[0054] Please refer to Figure 4 , Figure 4 A cross-sectional view of the array antenna module 1 according to an embodiment of the present application is provided. It can be understood that Figure 4The array antenna module 1 shown can be carried out in a specific setting environment, which can be that the distance between the transmitting antenna 130 and the receiving antenna 120 is approximately 1 mm, the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm, and the second spacing 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 fed with current in a direct feeding manner. For example, in some embodiments, the dielectric substrate 110 can be a multi-layer dielectric substrate, including N substrates, where N is a positive integer greater than or equal to 2, that is, the dielectric substrate 110 can include a first substrate, …, an Nth substrate. In this embodiment, the dielectric substrate 110 includes 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. Among them, the surface of the first substrate 111 away from the second substrate 112 is provided with the transmitting antenna 130, the receiving antenna 120, the first decoupling element 150, and the second decoupling element 140. The surface of the second substrate 112 away from the first substrate 111 is provided with a ground layer G for grounding the transmitting antenna 130 and the receiving antenna 120. The first substrate 111 is also provided with a first via 1111 and a second via 1112. A first feeder 113 and a second feeder 114 are also provided between the first substrate 111 and the second substrate 112. In this way, the first feeder 113 can feed current to the corresponding receiving antenna 120 through the first via 1111 to cause the receiving antenna 120 to excite a corresponding radiation signal. The second feeder 114 can feed current to the corresponding transmitting antenna 130 through the second via 1112 to cause the transmitting antenna 130 to excite a corresponding radiation signal.

[0055] 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 away from the first substrate 111. The array antenna module 1 further includes a radio frequency (RF) transmit front-end module 220 and an RF receive front-end module 210. The RF transmit front-end module 220 and the RF receive front-end module 210 are respectively disposed on the surface of the first substrate 111 that is the farthest from the tenth substrate 1110. The second substrate 112 to the tenth substrate 1110 are further provided with third vias 1121 and fourth vias 1122. In this way, the RF receive front-end module 210 can be connected to the first feeder 113 through the third vias 1121, and then connected to the receive antenna 120 through the first vias 1111, so that the RF receive front-end module 210 can control the receive antenna 120. The RF transmit front-end module 220 can be connected to the second feeder 114 through the fourth vias 1122, and then connected to the transmit antenna 130 through the second vias 1112, so that the RF transmit front-end module 220 can control the transmit antenna 130. In some embodiments, the third vias 1121 and the fourth vias 1122 respectively penetrate the second substrate 112 to the tenth substrate 1110.

[0056] Please refer to Figure 5 , Figure 5 to provide a schematic diagram of the array antenna module 1 according to an embodiment of the present application. It can be understood that Figure 5 the shown array antenna module 1 can be carried out in a specific setting environment, and the specific setting environment can be that the spacing between the transmit antenna 130 and the receive antenna 120 is approximately 1 millimeter, the first separation distance between the first decoupling element 150 and the transmit antenna 130 is 0.1 to 0.5 millimeters, and the second separation distance between the second decoupling element 140 and the receive antenna 120 is 0.1 to 0.5 millimeters. Figure 5 The difference between the array antenna module 1 of the shown embodiment and Figure 1 the array antenna module 1 of the shown embodiment is that: Figure 1 the array antenna module 1 of includes a group of transmit antennas 130 and receive antennas 120, and a corresponding group of first decoupling elements 150 and second decoupling elements 140; Figure 5 the array antenna module 1 of includes multiple groups of transmit antennas 130 and receive antennas 120, and corresponding multiple groups of first decoupling elements 150 and second decoupling elements 140 to form an array antenna.

[0057] Please refer to Figure 5, the array antenna module 1 includes a plurality of the transmitting antennas 130 arranged in rows and a plurality of the receiving antennas 120 arranged in rows. Among them, in each row of receiving antennas 120, every two adjacent receiving antennas 120 are spaced apart by a first preset distance R1. In each row of transmitting antennas 130, every two adjacent transmitting antennas 130 are spaced apart by a second preset distance R2. And each receiving antenna 120 is arranged in a staggered manner between two transmitting antennas 130. It can be understood that the present application does not limit the magnitudes of the first preset distance R1 and the second preset distance R2. For example, in an embodiment of the present application, the first preset distance R1 may be greater 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 make corresponding adjustments to the magnitudes of the first preset distance R1 and the second preset distance R2 according to requirements such as the size design of the product or the adjustment of the radiation frequency.

[0058] A plurality of rows of transmitting antennas 130 and a plurality of rows of receiving antennas 120 are arranged in a staggered manner to form an array disposed on the dielectric substrate 110. That is to say, in some embodiments, each row of transmitting antennas 130 and each row of receiving antennas 120 are alternately arranged on the dielectric substrate 110 in sequence. Thus, in the embodiments of the present application, the transmitting antennas 130 and the receiving antennas 120 are mixed and staggered in the same area on the dielectric substrate 110, which can reduce the area of the dielectric substrate 110 used and is beneficial to the miniaturization design of the array antenna module 1.

[0059] The array antenna module 1 further includes a plurality of first decoupling elements 150 and a plurality of second decoupling elements 140. Among them, the number of the first decoupling elements 150 corresponds to the number of the transmitting antennas 130, and the number of the second decoupling elements 140 corresponds to the number of the receiving antennas 120. Each transmitting antenna 130 is surrounded by a corresponding first decoupling element 150, and each receiving antenna 120 is surrounded by a corresponding second decoupling element 140. It can be understood that the first decoupling elements 150 and the second decoupling elements 140 can be in the form of a single, two, or four combinations surrounding the transmitting antennas 130 and the receiving antennas 120 disclosed in the above embodiments, and will not be elaborated here.

[0060] It can be understood that the present application does not specifically limit the shapes and areas of the transmitting antenna 130 and the receiving antenna 120, and those skilled in the art can adjust them according to needs. In some embodiments, the area of the transmitting antenna 130 is smaller than that of the receiving antenna 120. The area of the transmitting antenna 130 being smaller than that of the receiving antenna 120 enables the transmitting antenna 130 to transmit a radiation signal at a relatively higher frequency with respect to the receiving antenna 120. In another embodiment of the present application, the area of the transmitting antenna 130 may be larger than that of the receiving antenna 120. The area of the transmitting antenna 130 being larger than that of the receiving antenna 120 enables the transmitting antenna 130 to transmit a radiation signal at a relatively lower frequency with respect to the receiving antenna 120. In another embodiment of the present application, the area of the transmitting antenna 130 may be equal to that of the receiving antenna 120. The area of the transmitting antenna 130 being equal to that of the receiving antenna 120 enables the transmitting antenna 130 to transmit a radiation signal at the same frequency as the receiving antenna 120. Moreover, the transmitting antenna 130 and the receiving antenna 120 may also be conductors of other shapes, such as oval, rectangular, etc.

[0061] It can be understood that the present application does not limit the magnitudes of the first preset distance R1 and the second preset distance R2. In some embodiments, the first preset distance R1 and the second preset distance R2 may be equal or may not be equal.

[0062] Please refer to Figure 5 and Figure 6 , Figure 5 The array antenna module 1 shown in Figure 6 includes a 32×32 transmitting antenna 130 and a 32×32 receiving antenna 120; Figure 6 The array antenna module 1 shown in Figure 5 and Figure 6 includes a 2×2 transmitting antenna 130 and a 32×32 receiving antenna 120. It can be understood that those skilled in the art can set and adjust the array antenna module 1 according to actual needs, such as a 4×4 or 32×32 transmitting antenna 130 and a 4×4 or 32×32 receiving antenna 120, etc., and the present application will not elaborate on them one by one here. It can be understood that Figure 5 and Figure 6 the array antenna module 1 shown in

[0063] Please refer to Figures 7A - 7D , Figures 7A - 7D which are respectively schematic diagrams of the electric field distributions corresponding to the array antenna module 1 provided by the embodiments of the present application in different working modes. Among them, Figure 7AThe 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, and the transmitting antenna 130 is turned on while the receiving antenna 120 is turned off. Figure 7B 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, and the transmitting antenna 130 is turned off while the receiving antenna 120 is turned on. Figure 7C 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, and the transmitting antenna 130 is turned on while the receiving antenna 120 is turned off. Figure 7D 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, and the transmitting antenna 130, and the transmitting antenna 130 is turned off while the receiving antenna 120 is turned on. Figures 7A - 7D From the schematic diagram of the electric field distribution, it can be obtained that when the first decoupling element 150 and the second decoupling element 140 are added, the electric field energy distribution is concentrated on the transmitting antenna 130 and the receiving antenna 120, and the mutual interference effect is extremely small. When the first decoupling element 150 and the second decoupling element 140 are not added, the electric field energy distributions of the transmitting antenna 130 and the receiving antenna 120 will be coupled and affect each other. It can be understood that Figures 7A - 7D The array antenna module 1 shown can be carried out in a specific setting environment, and the specific setting environment is that the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 millimeters, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 millimeters. More specifically, in Figures 7A - 7D the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 millimeter, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 millimeter.

[0064] Please refer to Figure 8A and 8B , Figure 8A and 8B are respectively schematic diagrams of the curves of the return loss and isolation corresponding to whether the array antenna module 1 provided in the embodiment of the present application is provided with a decoupling element. Among them, Figure 8A When the transmitting antenna 130 and the receiving antenna 120 do not include the first decoupling element 150 and the second decoupling element 140, and the curves of the S parameters and isolation in the preset operating frequency band, the curve S81 is the S parameter curve of the transmitting antenna 130, the curve S82 is the S parameter curve of the receiving antenna 120, and the curve S83 is the isolation curve between the transmitting antenna 130 and the receiving antenna 120.

[0065] Figure 8B Curves of S-parameters and isolation of the transmitting antenna 130 and the receiving antenna 120 when they are surrounded by the first decoupling element 150 and the second decoupling element 140 respectively, 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 Figure 8A and 8B the schematic diagram of the isolation curve, it can be obtained that when the transmitting antenna 130 and the receiving antenna 120 are surrounded by the first decoupling element 150 and the second decoupling element 140 respectively, and in the preset operating frequency band (such as the KuBand transmitting frequency band of low-orbit satellites, 14.0 GHz - 14.5 GHz), the isolation between the transmitting antenna 130 and the receiving antenna 120 is increased by approximately 10 decibels (dB). It can be understood that Figure 8A and 8B the array antenna module 1 shown in Figure 8A and 8B can be carried out in a specific setting environment, and the specific setting environment can be that the distance between the transmitting antenna 130 and the receiving antenna 120 is approximately 1 millimeter, the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 millimeters, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 millimeters. More specifically, in Figure 8A and 8B the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 millimeter, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 millimeter.

[0066] Please refer to Figure 9A and 9B , Figure 9A and 9B which are schematic diagrams of the curves of the radiation gain (RadiationGain) corresponding to whether the array antenna module 1 provided in the embodiments of the present application is provided with a decoupling element. Among them, Figure 9A is a schematic diagram of the curve of the radiation gain corresponding to whether the array antenna module 1 provided in the embodiments of the present application is provided with a decoupling element and in the preset receiving frequency band. Curve S91 is the curve of the radiation gain of the receiving antenna 120 corresponding to the preset receiving frequency band (such as the KuBand receiving frequency band of low-orbit satellites, 10.7 GHz - 12.7 GHz) when the first decoupling element 150 and the second decoupling element 140 are not included, and curve S92 is the curve of the radiation gain of the receiving antenna 120 corresponding to the preset receiving frequency band (such as the KuBand receiving frequency band of low-orbit satellites, 10.7 GHz - 12.7 GHz) when the transmitting antenna 130 and the receiving antenna 120 are surrounded by the first decoupling element 150 and the second decoupling element 140 respectively.Figure 9B Schematic diagram of the radiation gain curve of the array antenna module 1 provided in the embodiment of the present application when the decoupling element is set or not, and in the preset receiving frequency band. Curve S93 is the radiation gain curve of the transmitting antenna 130 in the preset transmitting frequency band (for example, the KuBand transmitting frequency band of a low-orbit satellite, 14.0 GHz - 14.5 GHz) when the first decoupling element 150 and the second decoupling element 140 are not included. Curve S94 is the radiation gain curve of the transmitting antenna 130 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, and in the preset transmitting frequency band (for example, the KuBand transmitting frequency band of a low-orbit satellite, 14.0 GHz - 14.5 GHz). From Figure 9A and 9B the schematic diagram of the radiation gain curve, it can be obtained 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, and in the preset operating frequency band (for example, the KuBand transmitting frequency band of a low-orbit satellite, 14.0 GHz - 14.5 GHz), the radiation gain of the transmitting antenna 130 is increased by approximately 2 - 3 decibels, while in the preset operating frequency band (for example, the KuBand receiving frequency band of a low-orbit satellite, 10.7 GHz - 12.7 GHz), the radiation gain of the receiving antenna 120 has a slight impact. It can be understood that Figure 9A and 9B the array antenna module 1 shown in Figure 9A and 9B can be carried out in a specific setting environment. The specific setting environment can be that the distance between the transmitting antenna 130 and the receiving antenna 120 is approximately 1 millimeter, the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 millimeters, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 millimeters. More specifically, in Figure 9A and 9B , the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 millimeter, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 millimeter.

[0067] Please refer to Figure 10 , which is a schematic diagram of the isolation degree of the array antenna module 1 provided in the embodiment of the present application when different decoupling elements are set. Among them, curve S101 is the isolation degree curve when the first decoupling element 150 and the second decoupling element 140 are not included in the transmitting antenna 130 and the receiving antenna 120. Curve S102 is Figure 2 the isolation degree curve when the transmitting antenna 130 and the receiving antenna 120 shown in Figure 3Isolation curve when the shown transmitting antenna 130 and receiving antenna 120 are respectively surrounded by two decoupling elements. In the case of having the first decoupling element 150, the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 millimeters. In the case of having the second decoupling element 140, the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 millimeters. From Figure 10 the schematic diagram of the isolation curve, it can be seen that by arranging 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.

[0068] Please refer to Figures 11A - 11D , for the decoupling elements with different shapes provided by the array antenna module 1 in the embodiment of the present application. Please refer to Figure 11A and 11B , at least one decoupling element 161 is arranged between the transmitting antenna 130 and the receiving antenna 120, where Figure 11A the shown is a single decoupling element 161, Figure 11B the shown are the decoupling elements 161A and 161B arranged at intervals. In some embodiments, the decoupling elements 161A and 161B are respectively substantially rectangular metal segments with different lengths. Among them, the decoupling element 161A can be the second decoupling element, which is arranged close to the receiving antenna 120. The length of the decoupling element 161A is 0.9 to 1.0 wavelengths of the operating frequency band of the receiving antenna 120 (i.e., the second operating frequency band), and in Figure 11B the embodiment has a relatively long length. The decoupling element 161B can be the first decoupling element, which is arranged close to the transmitting antenna 130. The length of the decoupling element 161B is 0.9 to 1.0 wavelengths of the operating frequency band of the transmitting antenna 130 (i.e., the first operating frequency band), and in Figure 11B the embodiment has a relatively short length. Please refer to Figure 11C , the receiving antenna 120 is surrounded by the second decoupling element 162, and the transmitting antenna 130 is surrounded by the first decoupling element 163. In some embodiments, the structure of the second decoupling element 162 is substantially similar to Figure 1 the structure of the first decoupling element 150 shown in Figure 1 , and the structure of the first decoupling element 163 is substantially similar to Figure 11C the structure of the second decoupling element 140 shown in Figure 1 , that is, Figure 11C the structures of the second decoupling element 162 and the first decoupling element 163 shown in Figure 1 are swapped with the structures of the first decoupling element 150 and the second decoupling element 140 shown in Figure 11D, the transmitting antenna 130 is surrounded by the first decoupling element 165, and the receiving antenna 120 is surrounded by the second decoupling element 164. In some embodiments, the first decoupling element 165 and the second decoupling element 164 are substantially composed of four rectangular metal plates, which are respectively arranged at intervals along the peripheries of the transmitting antenna 130 and the receiving antenna 120. It can be understood that the first decoupling element 165 or the second decoupling element 164 can be arranged between the transmitting antenna 130 and the receiving antenna 120. It can be understood that Figures 11A - 11D The array antenna module 1 shown can be carried out in a specific setting environment, and the specific setting environment can be that the distance between the transmitting antenna 130 and the receiving antenna 120 is approximately 1 mm, the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 mm.

[0069] Please refer to Figure 12A and 12B , Figure 12A and 12B are respectively schematic diagrams of the curves of the isolation corresponding to the array antenna module 1 provided by the embodiments of the present application when different-shaped decoupling elements are set. Among them, Figure 12A is the isolation between the transmitting antenna 130 and the receiving antenna 120 when the first decoupling element 150 and the second decoupling element 140 shown in Figure 1 are set for the array antenna module 1, and this isolation can be less than -20 dB. Figure 12B is the isolation between the transmitting antenna 130 and the receiving antenna 120 when the first decoupling element 150 and different-shaped second decoupling elements 140 shown in Figure 1 are set for the array antenna module 1, and this isolation can be less than -15 dB. Among them, compared with the shape of the second decoupling element 140 shown in Figure 1 , Figure 12B in the second decoupling element shown, the first section 142 and the third section 146 of the second decoupling element extend respectively from the edge adjacent to the receiving antenna 120 towards the direction of the edge closer to the receiving antenna 120, that is, extend inwards from the edge adjacent to the receiving antenna 120. From Figure 12A and 12B the different shapes of the second decoupling element 140, the isolation characteristics between the transmitting antenna 130 and the receiving antenna 120 can produce a difference of about 5 - 10 dB. It can be understood that Figure 12A and 12BThe array antenna module 1 shown can be carried out in a specific setting environment, which can be that the spacing between the transmitting antenna 130 and the receiving antenna 120 is approximately 1 mm, the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 to 0.5 mm, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 to 0.5 mm. More specifically, in Figure 12A and 12B , the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 mm, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 mm.

[0070] Please refer to Figure 13 , Figure 13 is a schematic diagram of the curve of the isolation corresponding to setting decoupling elements of different lengths for the array antenna module 1 provided in the embodiment of the present application. Among them, the curve S132 is the isolation corresponding to setting the length of the decoupling element of the array antenna module 1 to 1.0 wavelength of the operating frequency band wavelength of the transmitting antenna and the receiving antenna. It can be seen that the isolation in the low-orbit satellite Ku Band transmitting frequency band 14 - 14.5 GHz under this setting is less than -20 dB. The curve S134 is the isolation corresponding to setting the length of the decoupling element of the array antenna module 1 to 1.2 wavelengths of the operating frequency band wavelength of the transmitting antenna and the receiving antenna. It can be seen that the isolation in the low-orbit satellite Ku Band transmitting frequency band 14 - 14.5 GHz under this setting is less than -15 dB. The curve S136 is the isolation corresponding to setting the length of the decoupling element of the array antenna module 1 to 0.8 wavelength of the operating frequency band wavelength of the transmitting antenna and the receiving antenna. It can be seen that the isolation in the low-orbit satellite Ku Band transmitting frequency band 14 - 14.5 GHz under this setting is less than -10 dB. It can be understood that Figure 13 the schematic diagram of the isolation curve shown is carried out in a specific setting environment, which can be that the spacing between the transmitting antenna and the receiving antenna is approximately 1 mm, the first spacing distance between the first decoupling element and the transmitting antenna is 0.1 to 0.5 mm, and the second spacing distance between the second decoupling element and the receiving antenna is 0.1 to 0.5 mm. More specifically, in Figure 13In this case, the first spacing distance between the first decoupling element 150 and the transmitting antenna 130 is 0.1 mm, and the second spacing distance between the second decoupling element 140 and the receiving antenna 120 is 0.1 mm. It can be seen that when the first spacing distance between the first decoupling element and the transmitting antenna is 0.1 to 0.5 mm and the second spacing distance between the second decoupling element and the receiving antenna is 0.1 to 0.5 mm, and the length of the decoupling element is 0.9 - 1.0 wavelengths of the operating frequency band wavelength of the transmitting antenna and the receiving antenna, the isolation corresponding to the Ku Band transmitting frequency band of 14 - 14.5 GHz for low-earth orbit satellites is better (see Figure 13 the curve S132).

[0071] The array antenna module 1 provided in this application is provided with at least one first decoupling element 150 disposed between at least one transmitting antenna 130 and at least one receiving antenna 120, and disposed adjacent to at least one transmitting antenna 130, and at least one second decoupling element 140 is disposed between at least one transmitting antenna 130 and at least one receiving antenna 120, and disposed adjacent to at least one receiving antenna 120, which can effectively reduce the mutual coupling interference between at least one transmitting antenna 130 and at least one receiving antenna 120, ensure the performance of at least one transmitting antenna 130 and at least one receiving antenna 120, improve the stability, and make the array antenna module 1 applicable to more wireless communication devices.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention. Those skilled in the art can also make other changes within the spirit of the present invention for use in the design of the present invention, as long as they do not deviate from the technical effects of the present invention. These changes made in accordance with the spirit of the present invention should all be included within the scope claimed by the present invention.

Claims

1. An array antenna module, characterized in that, the array antenna module comprises: a dielectric substrate; at least one transmitting antenna and at least one receiving antenna, the at least one transmitting antenna and the at least one receiving antenna are arranged adjacent to each other and are disposed on the dielectric substrate; at least one decoupling element, the at least one decoupling element is disposed on the dielectric substrate and at least partially disposed between the at least one transmitting antenna and the at least one receiving antenna for improving the isolation between the at least one transmitting antenna and the at least one receiving antenna; wherein, the at least one decoupling element comprises 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 is disposed adjacent to the at least one transmitting antenna; 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 according to claim 1, characterized in that: the length of the first decoupling element is 0.9 to 1.0 wavelengths of the operating frequency band wavelength of the at least one transmitting antenna, and the length of the second decoupling element is 0.9 to 1.0 wavelengths of the operating frequency band wavelength of the at least one receiving antenna.

3. The array antenna module according to claim 1, characterized in that: the first decoupling element surrounds the at least one transmitting antenna, and the second decoupling element surrounds the at least one receiving antenna.

4. The array antenna module according to claim 1, characterized in that: 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 array antenna module according to claim 1, characterized in that: the at least one transmitting antenna is surrounded by four spaced-apart first decoupling elements, and the four first decoupling elements are arranged end to end in sequence at intervals, and the at least one receiving antenna is surrounded by four spaced-apart second decoupling elements, and the four second decoupling elements are arranged end to end in sequence at intervals.

6. The array antenna module according to claim 5, characterized in that: each of the first decoupling elements comprises a first section, a second section and a third section connected in sequence, the first section and the third section are symmetrically connected to opposite ends of the second section, the second section is arranged at intervals along the edge of the at least one transmitting antenna, and the first section and the third section respectively extend from the edge adjacent to the at least one transmitting antenna towards the direction away from the edge of the at least one transmitting antenna; each of the second decoupling elements comprises a fourth section, a fifth section and a sixth section connected in sequence, the fourth section and the sixth section are symmetrically connected to opposite ends of the fifth section, the fifth section is arranged at intervals along the edge of the at least one receiving antenna, and the fourth section and the sixth section respectively extend from the edge adjacent to the at least one receiving antenna towards the direction close to the edge of the at least one receiving antenna and then bend towards each other.

7. The array antenna module according to claim 5, characterized in that: The interval positions of every two adjacent ones of the first decoupling elements are equally spaced along the circumferential direction of the at least one transmitting antenna; The interval positions of every two adjacent ones of the second decoupling elements are equally spaced along the circumferential direction of the at least one receiving antenna.

8. The array antenna module according to claim 1, characterized in that: The array antenna module comprises: a plurality of the transmitting antennas arranged in rows, and in each row, every two adjacent ones of the transmitting antennas are spaced apart by a second preset distance; a plurality of the receiving antennas arranged in rows, and in each row, every two adjacent ones of the receiving antennas are spaced apart by a first preset distance, and each of the receiving antennas is arranged in a staggered manner between two of the transmitting antennas; Each row of the transmitting antennas and each row of the receiving antennas are arranged in a staggered manner to form an array disposed on the dielectric substrate; 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 array antenna module according to claim 1, characterized in that: The dielectric substrate comprises a first substrate to an Nth substrate stacked thereon, N being a positive integer greater than or equal to 2. The surface of the first substrate away from the Nth substrate is provided with the at least one transmitting antenna and the at least one receiving antenna, and the surface of the Nth substrate away from the first substrate is provided with a grounding layer; A first feeding line and a second feeding line are provided between the first substrate and the Nth substrate. The first substrate is further provided with a first via hole and a second via hole. Two ends of the first via hole respectively correspond to the at least one receiving antenna and the first feeding line, and the at least one receiving antenna is fed through the first via hole and the first feeding line; Two ends of the second via hole respectively correspond to the at least one transmitting antenna and the second feeding line, and the at least one transmitting antenna is fed through the second via hole and the second feeding line.

10. A wireless communication device, characterized in that: The wireless communication device comprises the array antenna module according to any one of claims 1-9.

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