Antenna arraying method, device and equipment and storage medium

Abstract

The embodiment of the invention provides an antenna arraying method, device and equipment and a storage medium, which can be applied to the technical field of microwaves, in the method, an antenna unit is arranged at the central position of a reflecting plate; a concentric circle antenna array is arranged by taking the antenna unit as a center, the concentric circle antenna array comprises a plurality of circles of antenna sub-arrays, each circle of antenna sub-array comprises a plurality of antenna units, and in the plurality of antenna units, the distances between at least two antenna units and the center position are different, and the distances between at least two antenna units and the center position are different. Optimization of circular polarization radiation characteristics of the phased-array antenna is realized, balance between suppression of sidelobe level and expansion of a beam scanning range of wireless signals is achieved, and the quality of signals at a receiving end is ensured.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of microwave technology, and in particular to an antenna array method, device, equipment and storage medium. Background Art

[0002] During the transmission of wireless signals, wireless signals are affected by complex terrain and will be reflected, refracted, scattered, etc., resulting in the signal received by the receiving end not only containing the direct signal from the signal source, but also containing the signal reflected or refracted by the surfaces of different objects, thereby affecting the quality and reliability of the receiving end signal. This situation is called the multipath effect. In related technologies, a circularly polarized antenna array with uniform array surface is generally used to suppress the multipath effect, where the circularly polarized antenna array refers to an antenna array that can produce circularly polarized radiation characteristics.

[0003] However, the uniform circular polarization antenna array has fixed spacing and regular arrangement of array elements, which limits the beam scanning range of wireless signals and makes it difficult to suppress the sidelobe level, thus affecting the quality of the signal at the receiving end. Summary of the invention

[0004] The embodiments of the present invention provide an antenna array method, device, equipment and storage medium for suppressing the sidelobe level and expanding the beam scanning range.

[0005] On the one hand, an embodiment of the present application provides an antenna array method, the method comprising:

[0006] An antenna unit is arranged at the center of the reflector;

[0007] A concentric circle antenna array is arranged with the one antenna unit as the center. The concentric circle antenna array includes multiple circles of antenna subarrays. Each circle of antenna subarray includes multiple antenna units, and among the multiple antenna units, there are at least two antenna units with different distances from the center position.

[0008] Optionally, it also includes:

[0009] Based on the symmetrical distribution of the concentric circle antenna array, the concentric circle antenna array is divided into N equally divided areas, and the distances between any two antenna units and the center position in each equally divided area are different, and N>1.

[0010] Optionally, it also includes:

[0011] The number of the multi-turn antenna subarrays is L, and L is greater than 1;

[0012] The number of antenna units in the (k+1)th antenna subarray is greater than the number of antenna units in the (k)th antenna subarray, and k is greater than or equal to 1 and less than or equal to L.

[0013] Optionally, it also includes:

[0014] Setting a first self-rotation angle for an antenna unit at the center position;

[0015] Based on the number of antenna units in each circle of antenna subarrays, a second self-rotation angle of each antenna unit in each circle of the antenna subarrays is determined.

[0016] Optionally, determining the second rotation angle of each antenna unit in each circle of the antenna subarray based on the number of antenna units in each circle of the antenna subarray includes:

[0017] For each antenna subarray, execute:

[0018] If the number of antenna units included in a circle of antenna subarrays is M, the second self-rotation angle of each antenna unit in the circle of antenna subarrays is set to 360 / M, where M>1.

[0019] On the one hand, an embodiment of the present application provides an antenna array, including:

[0020] A reflector and a concentric antenna array arranged on the reflector;

[0021] The concentric circle antenna array comprises: an antenna unit arranged at the center of the reflector, and a plurality of antenna sub-arrays distributed in a plurality of concentric circles around the center of the reflector;

[0022] Each circle of antenna subarray includes multiple antenna units, and among the multiple antenna units, at least two antenna units have different distances from the center position.

[0023] Optionally, the antenna array further includes:

[0024] There are N equally divided areas, and the distances between any two antenna units and the center position in each equally divided area are different, and N>1.

[0025] Optionally, the antenna array further includes:

[0026] The number of the multi-turn antenna subarrays is L, and L is greater than 1;

[0027] The number of antenna units in the (k+1)th antenna subarray is greater than the number of antenna units in the (k)th antenna subarray, and k is greater than or equal to 1 and less than or equal to L.

[0028] On the one hand, an embodiment of the present application provides an antenna array device, the device comprising:

[0029] A first setting module is used to set an antenna unit at the center of the reflection plate;

[0030] The second setting module is used to arrange a concentric circle antenna array with the one antenna unit as the center, wherein the concentric circle antenna array includes multiple circles of antenna sub-arrays, each circle of antenna sub-array includes multiple antenna units, and among the multiple antenna units, there are at least two antenna units with different distances from the center position.

[0031] Optionally, the second setting module is further used to:

[0032] Based on the symmetrical distribution of the concentric circle antenna array, the concentric circle antenna array is divided into N equally divided areas, and the distances between any two antenna units and the center position in each equally divided area are different, and N>1.

[0033] Optionally, the second setting module is further used to:

[0034] The number of the multi-turn antenna subarrays is L, and L is greater than 1;

[0035] The number of antenna units in the (k+1)th antenna subarray is greater than the number of antenna units in the (k)th antenna subarray, and k is greater than or equal to 1 and less than or equal to L.

[0036] Optionally, the second setting module is further used to:

[0037] Setting a first self-rotation angle for an antenna unit at the center position;

[0038] Based on the number of antenna units in each circle of antenna subarrays, a second self-rotation angle of each antenna unit in each circle of the antenna subarrays is determined.

[0039] Optionally, the second setting module is specifically used to:

[0040] For each antenna subarray, execute:

[0041] If the number of antenna units included in a circle of antenna subarrays is M, the second self-rotation angle of each antenna unit in the circle of antenna subarrays is set to 360 / M, where M>1.

[0042] In one aspect, an embodiment of the present application provides a computer device, including:

[0043] A memory for storing program instructions;

[0044] The processor is used to call the program instructions stored in the memory and execute the steps of the above antenna array method according to the obtained program.

[0045] On the one hand, an embodiment of the present application provides a computer-readable storage medium storing a computer program executable by a computer device, and when the program is run on the computer device, the computer executes the steps of the above-mentioned antenna array method.

[0046] In an embodiment of the present application, in a multi-circle antenna subarray of a concentric circle antenna array, each circle antenna subarray includes a plurality of antenna units, and among the plurality of antenna units, there are at least two antenna units at different distances from the center position of the reflector, so as to form an irregular quasi-concentric circle antenna array. Compared with the antenna array method with uniform array surface in the prior art, it can effectively suppress the side lobe level and ensure the main lobe gain of the beam; secondly, there are at least two antenna units at different distances from the center position, so the spacing between the antenna units in the entire antenna array is not equal, which solves the problem of grating lobes caused by excessive spacing between antenna units and expands the beam scanning angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0048] Figure 1 A schematic diagram of a system architecture provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of a flow chart of an antenna array method provided in an embodiment of the present application;

[0050] Figure 3 A schematic diagram of the structure of an antenna array provided in an embodiment of the present application;

[0051] Figure 4 A schematic diagram of the structure of an antenna array provided in an embodiment of the present application;

[0052] Figure 5 A schematic diagram of the structure of an antenna array device provided in an embodiment of the present application;

[0053] Figure 6 A schematic diagram of the structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical scheme and beneficial effects of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0055] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0056] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0057] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0058] The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and / or software code that is capable of performing the functions associated with that element.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0060] The following is a brief introduction to the system architecture diagram applicable to the technical solution of the embodiment of the present application. It should be noted that the process introduced below is only used to illustrate the embodiment of the present application and is not a limitation.

[0061] refer to Figure 1, which is a system architecture diagram applicable to an embodiment of the present application. The system architecture includes at least a terminal device 101 and a server 102. The number of terminal devices 101 can be one or more, and the number of servers 102 can also be one or more. The present application does not specifically limit the number of terminal devices 101 and servers 102.

[0062] The terminal device 101 pre-installs an application with an antenna array function, which is a client application, a web application, a small program application, etc. The terminal device 101 can be a smart phone, a tablet computer, a laptop computer, a desktop computer, etc., but is not limited thereto.

[0063] Server 102 is the background server of the application. Server 102 can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers. It can also be a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks (CDN), as well as big data and artificial intelligence platforms, but is not limited to these.

[0064] It should be noted that the method in the embodiment of the present application can be executed by the terminal device 101 or the server 102 alone, or can be executed by the terminal device 101 and the server 102 together.

[0065] In the embodiment of the present application, the terminal device 101 and the server 102 may be directly or indirectly connected to each other through one or more networks. The network may be a wired network or a wireless network, for example, a mobile cellular network, or a wireless fidelity (Wireless-Fidelity, WIFI) network, or other possible networks, which are not limited in the embodiment of the present application.

[0066] The present application embodiment provides a process of an antenna array method, and the process of the method can be Figure 1 The terminal device 101 shown in the figure may also be executed by the server 102, or the terminal device 101 and the server 102 may interact to execute the Figure 2 As shown, the following steps are included:

[0067] Step 201: arrange an antenna unit at the center of the reflector.

[0068] Specifically, an antenna unit is an independent component that can receive or transmit electromagnetic waves and is the smallest working unit of an antenna system or antenna array. A reflector is a platform that provides physical support for an antenna unit. In an antenna array, each antenna unit may require a specific position and angle to work. The reflector, as a basic platform, can assist in fixing these antenna units. Based on the number of antenna units in the antenna array and the structural design, a reflector of appropriate thickness is selected to prevent poor impedance matching due to a reflector that is too thin.

[0069] In order to suppress the multipath effect, the present application designs a phased array antenna array that can emit circularly polarized radiation characteristics. Among them, a circularly polarized antenna is like an antenna that can "rotate" to transmit signals in multiple directions. It can prevent some signals from being reflected by buildings or other obstacles and interfering with itself, especially in high-rise buildings or highways in cities, where signal reflections are very strong. Therefore, in order for the antenna unit to emit electromagnetic waves with circularly polarized radiation characteristics, the antenna unit can use an axial mode helical antenna, a microstrip circularly polarized antenna, a circular dipole antenna, etc., and the present application does not make specific limitations on this.

[0070] Step 202: Layout a concentric circle antenna array with one antenna unit as the center. The concentric circle antenna array includes multiple antenna subarrays. Each antenna subarray includes multiple antenna units. Among the multiple antenna units, at least two antenna units have different distances from the center position.

[0071] Specifically, with an antenna unit at the center of the reflector as the center, a concentric circle antenna array is arranged around the center, and the concentric circle antenna array includes multiple circles of antenna subarrays, and each circle of antenna subarray includes multiple antenna units. Among the multiple antenna units of each circle of antenna subarray, at least two antenna units have different distances from the center, so that each circle of antenna subarray forms an irregular approximate circular shape.

[0072] For example, refer to Figure 3 , if the distance between the antenna unit 305 and the center position in the second antenna subarray is set to 280 mm, the distance between the antenna unit 306 and the center position is set to 300 mm, and the antenna unit 304 is set to 260 mm. Then, in the second antenna subarray, the first distance between the antenna unit 304 and the center position, the second distance between the antenna unit 305 and the center position, and the third distance between the antenna unit 306 and the center position are all different.

[0073] If the distance between the antenna unit 309 and the center position in the third circle antenna subarray is set to 430 mm, the distance between the antenna unit 310 and the center position of the reflector is set to 500 mm, and the distances between the antenna unit 307 and the center position of the reflector in the third circle antenna subarray are both set to 410 mm, then for the fourth distance between the antenna unit 307 and the center position, the fifth distance between the antenna unit 308 and the center position, the sixth distance between the antenna unit 309 and the center position, and the seventh distance between the antenna unit 310 and the center position, among these four, the fourth distance is the same as the fifth distance, but the fourth distance is different from the sixth distance, the fourth distance is different from the seventh distance, and the sixth distance is also different from the seventh distance.

[0074] In an embodiment of the present application, in a multi-circle antenna subarray of a concentric antenna array, each circle antenna subarray includes a plurality of antenna units, and among the plurality of antenna units, there are at least two antenna units at different distances from the center position of the reflector, so as to form an irregular quasi-concentric antenna array. Compared with the antenna array method with uniform array surface in the prior art, it can effectively suppress the side lobe level and ensure the main lobe gain of the beam; secondly, there are at least two antenna units at different distances from the center position, so the spacing between the antenna units in the entire antenna array is not equal, which solves the problem of grating lobes caused by excessive spacing between antenna units and expands the beam scanning angle.

[0075] In some embodiments, based on the symmetrical distribution of the concentric circle antenna array, the concentric circle antenna array is divided into N equally divided areas, and the distances between any two antenna units and the center position in each equally divided area are different, and N>1.

[0076] Specifically, if the concentric circle antenna array has a smaller specification, that is, the number of antenna units is small, then based on the symmetrical distribution of the concentric circle antenna array, it is divided into N equally divided areas so that the distances between any two antenna units and the center position in each equally divided area are different.

[0077] Moreover, in each equally divided area, the adjacent distances between every two adjacent antenna units in an antenna subarray are different.

[0078] For example, refer to Figure 3 , based on the symmetrical distribution, the concentric circle antenna array is divided into 8 equal areas. For each equal area, for example, Figure 3The equally divided area includes antenna unit 301, antenna unit 302, antenna unit 303, antenna unit 304, antenna unit 305, antenna unit 306, antenna unit 307, antenna unit 308, antenna unit 309 and antenna unit 310, and the distance between each antenna unit (except the antenna unit at the center of the reflector) and the center is different. Each equally divided area and its adjacent equally divided area share the antenna unit 301 at the center and the antenna unit at the axis.

[0079] Furthermore, for the antenna units in the second circle antenna subarray, the adjacent distance between antenna unit 304 and antenna unit 305 is different from the adjacent distance between antenna unit 305 and antenna unit 306 .

[0080] For the antenna units in the third circle antenna subarray, the fourth adjacent distance between antenna unit 307 and antenna unit 308 (or other antenna units adjacent to antenna unit 307), the fifth adjacent distance between antenna unit 308 and antenna unit 309, and the sixth adjacent distance between antenna unit 309 and antenna unit 310 are different from each other.

[0081] At the same time, for the seventh adjacent distance between the antenna unit 304 and the antenna unit 307 located on the same axis in the second circle antenna subarray and the third circle antenna subarray, and the eighth adjacent distance between the antenna unit 306 and the antenna unit 310 located on another axis, the seventh adjacent distance and the eighth adjacent distance are not the same.

[0082] In the embodiment of the present application, by designing each circle of antenna subarrays in the concentric circle antenna array to be an irregular approximate circular shape, the spacing between antenna units is made uneven. Compared with the antenna array method with uniform array surface in the prior art, which has strong periodicity and is prone to side lobe level, the present application can effectively suppress the side lobe level and improve the main lobe gain, thereby ensuring the quality of the wireless signal.

[0083] In some embodiments, the number of the multi-circle antenna subarrays is L, where L is greater than 1; the number of antenna units in the k+1th circle antenna subarray is greater than the number of antenna units in the kth circle antenna subarray, and k is greater than or equal to 1 and less than or equal to L.

[0084] Specifically, to ensure the stability of the concentric circle antenna array structure, when setting the concentric circle antenna array, the number of antenna units increases from the inner circle antenna subarray to the outer circle antenna subarray. In practical applications, the number of antenna units may increase in sequence according to a preset multiple.

[0085] For example, refer to Figure 3In the entire concentric circle antenna array, the number of antenna units at the center position is set to 1, the number of antenna units in the first circle antenna subarray is set to 8, the number of antenna units in the second circle antenna subarray is set to 16, and the number of antenna units in the third circle antenna subarray is set to 24.

[0086] In some embodiments, a first self-rotation angle is set for an antenna unit at a central position; and a second self-rotation angle of each antenna unit in each circle of the antenna subarray is determined based on the number of antenna units in each circle of the antenna subarray.

[0087] Specifically, the concentric circle antenna array is combined with the self-rotation technology, and a first self-rotation angle is set for an antenna unit at the center, and a second self-rotation angle is set for the antenna units in each circle of the antenna subarray. Among them, the self-rotation technology refers to the use of mechanical means to allow the antenna array to rotate in different directions, improve the flexibility and adaptability of the antenna array, thereby improving the signal coverage, reception quality or performance in a multipath propagation environment, and can also better achieve circular polarization radiation purity and a wider axial ratio bandwidth without affecting the radiation efficiency and aperture size.

[0088] In some embodiments, for each circle of antenna subarrays, the following is performed respectively: if the number of antenna units included in a circle of antenna subarrays is M, the second rotation angle of each antenna unit in the circle of antenna subarrays is set to 360 / M, where M>1.

[0089] Specifically, the antenna units of each circle of antenna subarrays complete 360-degree closure by self-rotation, so the second self-rotation angle of each antenna unit in the circle of antenna subarrays is determined according to the number of antenna units in the circle of antenna subarrays.

[0090] For example, refer to Figure 3 , there is an antenna unit at the center of the reflector, then the first self-rotation angle of the antenna unit is set to 360 degrees; the first circle antenna subarray contains 8 antenna units, then the second self-rotation angle of each antenna unit is set to 45 degrees; the second circle antenna subarray contains 16 antenna units, then the second self-rotation angle of each antenna unit is set to 22.5 degrees (i.e. degrees); the third antenna subarray contains 24 antenna units, and the second self-rotation angle is set to 15 degrees for each antenna unit (i.e. Spend).

[0091] In an embodiment of the present application, a first self-rotation angle is set for an antenna unit at the center of the reflector in combination with the self-rotation technology. Based on the number of antenna units contained in each circle of the antenna subarray, a second self-rotation angle is set for each antenna unit in each circle of the antenna subarray, so that the antenna units in each circle of the antenna subarray can complete 360-degree closure through self-rotation, flexibly change the beam direction of the array, achieve wider signal coverage, and provide all-round signal transmission or reception in a variety of application scenarios.

[0092] In order to better explain the embodiments of the present application, the present application provides an antenna array, which includes:

[0093] A reflector and a concentric antenna array arranged on the reflector;

[0094] The concentric circle antenna array includes: an antenna unit arranged at the center of the reflector, and a plurality of antenna sub-arrays arranged in a plurality of concentric circles around the center of the reflector;

[0095] Each circle of antenna subarray includes multiple antenna units, and among the multiple antenna units, at least two antenna units have different distances from the center position.

[0096] Specifically, the concentric circle antenna array in the present application is not a regular concentric circle antenna array, but a sparse approximately concentric circle antenna array obtained by having at least two antenna units in each circle of antenna subarrays have different center positions from the reflector.

[0097] In some embodiments, the antenna array further includes: N equally divided areas, and the distances between any two antenna units and the center position in each equally divided area are different, and N>1.

[0098] Specifically, if the concentric circle antenna array is smaller in size, that is, the number of antenna units is small, it can be divided into N equally divided areas based on the symmetrical distribution of the concentric circle antenna array, so that the distances between any two antenna units and the center position in each equally divided area are different.

[0099] In some embodiments, the antenna array also includes: the number of multi-circle antenna subarrays is L, L is greater than 1; wherein the number of antenna units in the k+1th circle antenna subarray is greater than the number of antenna units in the kth circle antenna subarray, k is greater than or equal to 1, and less than or equal to L.

[0100] For example, refer to Figure 3, a concentric antenna array is set with 3 circles of antenna subarrays. An antenna unit 301 is set at the center of the reflector, and multiple antenna subarrays are distributed in three concentric circles around the center of the reflector, wherein the first circle antenna subarray includes 8 antenna units (including antenna unit 302 and antenna unit 303), the second circle antenna subarray includes 16 antenna units (including antenna unit 304, antenna unit 305 and antenna unit 306), and the third circle antenna subarray includes 24 antenna units (including antenna unit 307, antenna unit 308, antenna unit 309 and antenna unit 310), and each antenna unit is provided with a feeding point 311, which is the physical access position for receiving and transmitting signals in the antenna array. Due to the symmetrical distribution of the concentric antenna array, the concentric antenna array is divided into 8 equal areas to determine the distance between the antenna unit and the center position in each equal area. Among them, the specific numerical settings of the distance between the antenna unit 302 to the antenna unit 310 and the center position in the same equal area are shown in the following table:

[0101] Table 1

[0102] Antenna unit 302 303 304 305 306 307 308 309 310 Distance(mm) 130 140 260 280 300 390 410 430 500

[0103] In an embodiment of the present application, in a multi-circle antenna subarray of a concentric antenna array, each circle antenna subarray includes a plurality of antenna units, and among the plurality of antenna units, there are at least two antenna units at different distances from the center position of the reflector, so as to form an irregular quasi-concentric antenna array. Compared with the antenna array method with uniform array surface in the prior art, it can effectively suppress the side lobe level and ensure the main lobe gain of the beam; secondly, there are at least two antenna units at different distances from the center position, so the spacing between the antenna units in the entire antenna array is not equal, which solves the problem of grating lobes caused by excessive spacing between antenna units and expands the beam scanning angle.

[0104] It should be noted that the present application can also form the antenna array into an antenna array surface, using multiple antenna array surfaces, which are arranged together in the style of a cone. According to the different placement positions of each array surface, it can also be divided into two types: a plane antenna array surface and a sidewall antenna array surface. The antenna array surface forms the smaller plane of the two planes of the cone, and each sidewall antenna array surface forms each side of the cone; different antenna array surfaces have different scanning ranges, which are used to perform beamforming in a specific direction for the detection target within their respective scanning ranges.

[0105] For example, in the present application, the entire airspace can be divided into regions according to the scanning range that each antenna array face is responsible for, and sub-regions are obtained. Different antenna array faces are responsible for tracking different sub-regions, and the relationship data between the divided antenna array face and the tracking area is recorded. When the position data of the detection target is obtained, that is, the corresponding area to be tracked is obtained, then by comparing the sub-region with the recorded antenna array face-tracking area relationship, it is possible to quickly determine which antenna array face of the antenna should be used to work this time, that is, determine the target antenna array face. After determining the target antenna, the beamforming of the target antenna can be used to track the detection target.

[0106] In order to better demonstrate the beneficial effects of the present application, the concentric circle antenna array of the present application is compared with the rectangular antenna array of 7×7 array number in the prior art, and the two antenna arrays use reflectors of the same thickness and area. Figure 4 , the spacing between antenna units in the rectangular antenna array with a 7×7 array number is set to a fixed value of 130 mm, while the distance between the antenna unit and the center position in the concentric circle antenna array of the present application is set as shown in Table 1.

[0107] The 7×7 rectangular antenna array is a planar uniform array. The spacing between the antenna units and their adjacent antenna units is exactly the same, so that the far-field radiation performance of each antenna unit in any direction in space can be accurately predicted. At this time, if the edge effect in actual applications is not considered, the calculation formula for the phase relationship of the field of each antenna unit is as shown in the following formula:

[0108]

[0109] in, Represents the antenna array at a given angle θ and The radiation phase or the phase of the received signal under (x n ,y n ) represents the plane coordinates of the phase center of each antenna element; is the counterclockwise rotation angle of the antenna unit, and λ is the vacuum wavelength.

[0110] Since the 7×7 planar uniform array presents a regular grid arrangement, it is prone to periodic interference and is prone to produce strong side lobes in the direction away from the main lobe of the beam. Therefore, the planar uniform array is relatively limited in suppressing the peak sidelobe level (PSLL) and achieving excellent circular polarization radiation characteristics; and since the spacing between antenna units is equal, the antenna units are more likely to be mutually coupled, changing the radiation pattern of the antenna units, thereby making the directivity of the beam generated by the antenna array worse and the main lobe gain of the beam reduced.

[0111] However, once the spacing between antenna elements in a planar uniform array is enlarged to be greater than half the vacuum wavelength (i.e. ) is prone to the appearance of grating lobes. Grating lobes are additional main lobes formed by the antenna array in unexpected directions. They compete with the main lobe for radiation energy, resulting in a reduction in the gain of the main lobe. In practical applications, they are more likely to cause serious degradation of the antenna array performance or even failure.

[0112] Therefore, in order to suppress the sidelobe level, improve the main lobe gain of the beam, reduce the mutual coupling between antenna units and suppress the grating lobes, the present application adjusts the distances between at least two antenna units in each circle of the antenna array and the center position to be different on the basis of the standard concentric circle antenna array, so that the concentric circle antenna array of the present application is called a sparse approximate concentric circle antenna array.

[0113] In the actual test, the gain and axial ratio bandwidth of the plane with the highest sidelobe level value when the 7×7 planar uniform array and the concentric circle antenna array of the present application receive the GPS L1 and GPS L2 frequency bands are investigated.

[0114] After comparison, it is found that the beam formed by the 7×7 planar uniform array has the highest gain when it is not clipped, reaching 23.2dBiC and 21.9dBiC in the GPS L1 band and GPS L2 band respectively; but with the increase of the beam scanning angle, the beam gain gradually decreases. When the beam elevation angle is 37°, the beam gain in the GPS L1 band decreases by 1dB, and the beam gain in the GPS L2 band decreases by 2dB; but with the increase of the spacing between antenna units, grating lobes appear in the beam that has not been clipped.

[0115] The beam formed by the 7×7 planar uniform array can significantly reduce the sidelobe level after clipping, but it will also cause the main lobe gain of the beam to decrease. The maximum gain of the clipped beam is reduced by about 0.4dB compared with the non-clipped beam. However, as the spacing between antenna units increases, grating lobes also appear in the clipped beam, and the clipping process cannot suppress the grating lobes. This is because the spacing between the antenna units of the 7×7 planar uniform array is set to 130mm, which is close to the vacuum wavelength of 0.68λ in the GPS L1 band.

[0116] In order to prevent grating lobes from appearing in the 7×7 planar uniform array, the scanning angle of the beam needs to be controlled to be less than or equal to 28°, which greatly limits the scanning angle of the beam, resulting in a smaller signal coverage range of the 7×7 planar uniform array and a smaller beam gain. In the prior art, the scanning angle range of the beam is usually increased by reducing the spacing between antenna units, but this will reduce the beam gain. In order to obtain the same high beam gain, new antenna units must be added, which means that the number of matching back-end RF circuits and beam control modules must be increased accordingly, resulting in a difficult balance between controlling the antenna array cost and obtaining a greater beam gain.

[0117] In this application, the concentric circle antenna array has a 0.8 dB gain reduction compared to the 7×7 planar uniform array beam without clipping. However, the concentric circle antenna array beam does not have grating lobes, so the scanning angle of the beam is not limited, which can make the beam have a larger scanning angle, and the signal coverage range of the concentric circle antenna array is wider.

[0118] In summary, after actual testing, it was found that the concentric circle antenna array in the present application achieved a relative balance between factors such as suppressing the sidelobe level, ensuring beam gain, expanding the beam scanning angle, and suppressing the grating lobe.

[0119] Based on the same technical concept, the present application embodiment provides a structural schematic diagram of an antenna array device, such as Figure 5 As shown, the antenna array device 500 includes:

[0120] A first setting module 501 is used to set an antenna unit at the center of the reflection plate;

[0121] The second setting module 502 is used to arrange a concentric circle antenna array with the one antenna unit as the center, wherein the concentric circle antenna array includes multiple circles of antenna sub-arrays, each circle of antenna sub-array includes multiple antenna units, and among the multiple antenna units, there are at least two antenna units with different distances from the center position.

[0122] Optionally, the second setting module 502 is further configured to:

[0123] Based on the symmetrical distribution of the concentric circle antenna array, the concentric circle antenna array is divided into N equally divided areas, and the distances between any two antenna units and the center position in each equally divided area are different, and N>1.

[0124] Optionally, the second setting module 502 is further configured to:

[0125] The number of the multi-turn antenna subarrays is L, and L is greater than 1;

[0126] The number of antenna units in the antenna subarray of the k+1th circle is greater than the number of antenna units in the antenna subarray of the kth circle, and k is greater than or equal to 1 and less than or equal to L.

[0127] Optionally, the second setting module 502 is further configured to:

[0128] Setting a first self-rotation angle for an antenna unit at the center position;

[0129] Based on the number of antenna units in each circle of antenna subarrays, a second self-rotation angle of each antenna unit in each circle of the antenna subarrays is determined.

[0130] Optionally, the second setting module 502 is specifically configured to:

[0131] For each antenna subarray, execute:

[0132] If the number of antenna units included in a circle of antenna subarrays is M, the second self-rotation angle of each antenna unit in the circle of antenna subarrays is set to 360 / M, where M>1.

[0133] In an embodiment of the present application, in a multi-circle antenna subarray of a concentric antenna array, each circle antenna subarray includes a plurality of antenna units, and among the plurality of antenna units, there are at least two antenna units at different distances from the center position of the reflector, so as to form an irregular quasi-concentric antenna array. Compared with the antenna array method with uniform array surface in the prior art, it can effectively suppress the side lobe level and ensure the main lobe gain of the beam; secondly, there are at least two antenna units at different distances from the center position, so the spacing between the antenna units in the entire antenna array is not equal, which solves the problem of grating lobes caused by excessive spacing between antenna units and expands the beam scanning angle.

[0134] Based on the same technical concept, the embodiment of the present application provides a computer device, which can be Figure 1 The server shown, such as Figure 6 As shown, it includes at least one processor 601 and a memory 602 connected to the at least one processor. The specific link medium between the processor 601 and the memory 602 is not limited in the embodiment of the present application. Figure 6 For example, the processor 601 and the memory 602 are connected via a bus. The bus can be divided into an address bus, a data bus, a control bus, etc.

[0135] In the embodiment of the present application, the memory 602 stores instructions executed by at least one processor 601, and the at least one processor 601 can perform the steps of the above-mentioned antenna array method by executing the instructions stored in the memory 602.

[0136] Among them, the processor 601 is the control center of the computer device, and can use various interfaces and lines to connect various parts of the computer device, and realize the antenna array by running or executing instructions stored in the memory 602 and calling data stored in the memory 602. Optionally, the processor 601 may include one or more processing modules, and the processor 601 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 601. In some embodiments, the processor 601 and the memory 602 may be implemented on the same chip, and in some embodiments, they may also be implemented separately on independent chips.

[0137] Processor 601 can be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor, an application-specific integrated circuit (ASIC), a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware processor for execution, or can be executed by a combination of hardware and software modules in the processor.

[0138] The memory 602 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules. The memory 602 may include at least one type of storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory, a random access memory (Random Access Memory, RAM), a static random access memory (Static Random Access Memory, SRAM), a programmable read-only memory (Programmable Read Only Memory, PROM), a read-only memory (Read Only Memory, ROM), an electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), a magnetic memory, a disk, an optical disk, etc. The memory 602 is any other medium that can be used to carry or store a desired program code in the form of an instruction or data structure and can be accessed by a computer device, but is not limited thereto. The memory 602 in the embodiment of the present application can also be a circuit or any other device that can realize a storage function, for storing program instructions and / or data.

[0139] Based on the same inventive concept, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program that can be executed by a computer device. When the program runs on the computer device, the computer device executes the steps of the above-mentioned antenna array method.

[0140] Based on the same inventive concept, an embodiment of the present application provides a computer program product, including a computer program stored on a computer-readable storage medium, wherein the computer program includes program instructions. When the program instructions are executed by a computer device, the computer device executes the steps of the above-mentioned antenna deployment method.

[0141] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0142] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0143] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0144] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0145] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An antenna array method, characterized in that: include: An antenna unit is arranged at the center of the reflector; A concentric circle antenna array is arranged with the one antenna unit as the center. The concentric circle antenna array includes multiple circles of antenna subarrays. Each circle of antenna subarray includes multiple antenna units, and among the multiple antenna units, there are at least two antenna units with different distances from the center position.

2. The method according to claim 1, characterized in that Also includes: Based on the symmetrical distribution of the concentric circle antenna array, the concentric circle antenna array is divided into N equally divided areas, and the distances between any two antenna units and the center position in each equally divided area are different, and N>1.

3. The method according to claim 1, characterized in that Also includes: The number of the multi-turn antenna subarrays is L, and L is greater than 1; The number of antenna units in the (k+1)th antenna subarray is greater than the number of antenna units in the (k)th antenna subarray, and k is greater than or equal to 1 and less than or equal to L.

4. The method according to claim 1, characterized in that Also includes: Setting a first self-rotation angle for an antenna unit at the center position; Based on the number of antenna units in each circle of antenna subarrays, a second self-rotation angle of each antenna unit in each circle of the antenna subarrays is determined.

5. The method according to claim 4, characterized in that The determining, based on the number of antenna units in each circle of antenna subarrays, the second self-rotation angle of each antenna unit in each circle of the antenna subarrays comprises: For each antenna subarray, execute: If the number of antenna units included in a circle of antenna subarrays is M, the second rotation angle of each antenna unit in the circle of antenna subarrays is set to 360 / M, where M>1.

6. An antenna array, characterized in that: include: A reflector and a concentric antenna array arranged on the reflector; The concentric circle antenna array comprises: an antenna unit arranged at the center of the reflector, and a plurality of antenna sub-arrays distributed in a plurality of concentric circles around the center of the reflector; Each circle of antenna subarray includes multiple antenna units, and among the multiple antenna units, at least two antenna units have different distances from the center position.

7. The antenna array according to claim 6, characterized in that: The concentric circle antenna array includes: N equally divided areas, and the distances between any two antenna units in each equally divided area and the center position are different, and N>1.

8. The antenna array according to claim 6, characterized in that: The number of the multi-turn antenna subarrays is L, and L is greater than 1; The number of antenna units in the (k+1)th antenna subarray is greater than the number of antenna units in the (k)th antenna subarray, and k is greater than or equal to 1 and less than or equal to L.

9. An antenna array device, characterized in that: include: A first setting module is used to set an antenna unit at the center of the reflection plate; The second setting module is used to arrange a concentric circle antenna array with the one antenna unit as the center, wherein the concentric circle antenna array includes multiple circles of antenna sub-arrays, each circle of antenna sub-array includes multiple antenna units, and among the multiple antenna units, there are at least two antenna units with different distances from the center position.

10. A computer device, characterized in that: include: A memory for storing program instructions; A processor is used to call the program instructions stored in the memory and execute the steps of any one of the methods of claims 1 to 5 according to the obtained program.

11. A computer-readable storage medium, characterized in that: It stores a computer program executable by a computer device. When the program is run on the computer device, the computer device executes the steps of any method described in claims 1 to 5.

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