A polarization adjustable array and simulation method thereof

Abstract

The present application provides a polarization-adjustable array and a simulation method thereof. The array provided by the present application includes: an antenna subarray, a multi-port synthesis network and a radio frequency phase-shift synthesis chip, wherein the antenna subarray is used to receive and transmit polarized wave signals based on a microstrip antenna; the multi-port synthesis network is used to form a preset number of independent reconfigurable beams; the radio frequency phase-shift synthesis chip is used to control the phase and amplitude of the microstrip antenna in the antenna subarray to complete the adjustment of the polarization characteristics of the antenna subarray. The polarization-adjustable array and the simulation method thereof provided by the present application are used to freely adjust the polarization mode of the antenna to improve the flexibility and reliability of communication.

Description

Technical Field

[0001] The present application relates to the field of antenna communication technology, and in particular to a polarization adjustable array and a simulation method thereof. Background Art

[0002] With the rapid development of low earth orbit satellite communications, the demand for broadband and high throughput is growing. Ka-band communication terminals, especially large-scale tiled single-beam phased array antenna systems, have been widely studied and applied in recent years.

[0003] Traditional single-beam arrays can only focus on signal transmission in one direction. In dynamic communication scenarios that require fast response and flexible adjustment, single-beam arrays cannot communicate effectively. Multi-beam array systems solve these problems by generating multiple independent beams at the same time. The parallel operation of multiple beams can provide higher service continuity and better user experience, but different beams are prone to mutual interference, resulting in low stability and reliability of each beam. Summary of the invention

[0004] In view of this, the present application provides a polarization-adjustable array and a simulation method thereof, so as to freely adjust the polarization mode of the antenna and improve the flexibility and reliability of communication.

[0005] Specifically, the present application is implemented through the following technical solutions:

[0006] In a first aspect, the present application provides a polarization-adjustable array, the array comprising:

[0007] An antenna subarray, a radio frequency phase shift synthesis chip, and a multi-port synthesis network, wherein the antenna subarray, the radio frequency phase shift synthesis chip, and the multi-port synthesis network are integrated on a multi-layer hybrid laminated printed circuit board, and the total number of components of the multi-layer hybrid laminated printed circuit board is greater than a preset threshold;

[0008] The antenna subarray is used to receive and transmit polarized wave signals based on microstrip antennas;

[0009] The radio frequency phase shift synthesis chip is used to control the phase and amplitude of the microstrip antenna in the antenna subarray to adjust the polarization characteristics of the antenna subarray;

[0010] The radio frequency phase shift synthesis chip is also used to adjust the power allocation ratio and phase difference of the polarized wave and change the beam parameters of the reconfigurable beam;

[0011] The multi-port synthesis network is used to form a preset number of independent reconfigurable beams.

[0012] A second aspect of the present application provides a simulation method for a polarization-adjustable array, the method comprising:

[0013] Establish target model for polarization-tunable array;

[0014] Determine the parameters to be designed in the target model, the parameters to be designed at least include the size and position of components, perform simulation calculation on the target model based on a preset simulation type, and obtain a simulation result;

[0015] The target model is adjusted based on the simulation results until target array data that meets preset design requirements is obtained to determine the parameters to be designed.

[0016] The polarization adjustable array provided by the present application includes: an antenna subarray, a radio frequency phase shift synthesis chip and a multi-port synthesis network, wherein a preset polarized wave signal is received and transmitted through a microstrip antenna in the antenna subarray, and the radio frequency phase shift synthesis chip is used to control the phase and amplitude of the microstrip antenna in the antenna subarray, complete the adjustment of the polarization characteristics of the antenna subarray, and then form a preset number of independent reconfigurable beams based on the multi-port synthesis network. The method provided by the present invention concentrates a large number of components on a stacked multi-layer hybrid laminated printed circuit board, and the number of integrated components is high. At the same time, serial communication, antenna, and power supply are distributed in different layers, respectively, avoiding interference between different functions, realizing high-density integrated design, and being able to adapt to the development needs of multi-beam synthesis systems of various combination networks, and realizing the integrated development of low-cost, high-precision multi-beam synthesis systems. In this way, a dual-polarized microstrip antenna is set in the antenna subarray, and the phase and amplitude of the microstrip antenna are controlled by the radio frequency phase shift synthesis chip to change the polarization characteristics of the antenna subarray. Furthermore, the polarized waves output by the corresponding antenna subarrays are synthesized through a multi-port synthesis network. In this way, the synthesis function is combined with the phase shift function to obtain multiple independent and polarization-adjustable beams. Furthermore, through the coordinated work of the antenna subarrays, the RF phase shift synthesis chip and the multi-port synthesis network, the polarization diversity of the dual-polarized microstrip antenna is utilized, and the phase and amplitude are adjusted through the RF phase shift synthesis chip to change the polarization characteristics of the antenna subarray, and then the multi-port synthesis network is used to complete efficient power synthesis and beam forming, so that the entire array can flexibly adjust the polarization state and direction of the beam according to communication requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of an application scenario of a polarization-adjustable array provided by an exemplary embodiment of the present application;

[0018] Figure 2 A schematic diagram of a polarization-adjustable array provided for an exemplary embodiment of the present application;

[0019] Figure 3 A schematic diagram of slot feeding of an antenna unit shown in an exemplary embodiment of the present application;

[0020] Figure 4 A schematic diagram showing sequential rotation of antenna units in an antenna subarray according to an exemplary embodiment of the present application;

[0021] Figure 5 A schematic diagram of a metal through hole group shown in an exemplary embodiment of the present application;

[0022] Figure 6 The flowchart of the simulation method of the polarization-adjustable array is shown as an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0023] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application.

[0024] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items.

[0025] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0026] The present application provides a polarization-adjustable array and a simulation method thereof, which are used to freely adjust the polarization mode of the antenna and improve the flexibility and reliability of communication.

[0027] The polarization-adjustable array provided by the present application receives and transmits polarized wave signals through the microstrip antennas in the antenna subarrays, and the RF phase-shift synthesis chip is used to control the phase and amplitude of the microstrip antennas in the antenna subarrays to adjust the polarization characteristics of the antenna subarrays, thereby forming a preset number of independent reconfigurable beams based on a multi-port synthesis network. In this way, a dual-polarized microstrip antenna is set in the antenna subarray, and the phase and amplitude of the microstrip antenna are controlled by the RF phase-shift synthesis chip to change the polarization characteristics of the antenna subarray. Furthermore, the polarized waves output by the corresponding antenna subarrays are synthesized through a multi-port synthesis network. In this way, the synthesis function is combined with the phase-shift function to obtain multiple independent and polarization-adjustable beams. Furthermore, through the coordinated work of antenna subarrays, RF phase-shift synthesis chips and multi-port synthesis networks, the polarization diversity of the dual-polarized microstrip antenna is utilized, and the phase and amplitude are adjusted through the RF phase-shift synthesis chip to change the polarization characteristics of the antenna subarray. Then, efficient power synthesis and beam forming are completed through the multi-port synthesis network, so that the entire array can flexibly adjust the polarization state and direction of the beam according to communication requirements.

[0028] Figure 1 This is a schematic diagram of an application scenario of a polarization-adjustable array provided by an exemplary embodiment of the present application. Figure 1 , the polarization-adjustable array can form multiple independent beams at the same time, each beam can be independently directed to different users or areas, thereby achieving data transmission with multiple users at the same time. Through multiple independent beams, the capacity and efficiency of the communication system can be significantly improved.

[0029] Furthermore, in a polarization-adjustable array, when the communication between one beam and a user or area is about to end, another beam can be directed to the user or area in advance to ensure that the communication is not interrupted when the beam is switched. In this way, seamless beam switching can be completed, ensuring the stability and continuity of communication.

[0030] Specific embodiments are given below to introduce the technical solution of the present application in detail.

[0031] Figure 2 A schematic diagram of a polarization adjustable array provided by an exemplary embodiment of the present application. Figure 2 , the array provided in this embodiment includes: an antenna subarray 1, a radio frequency phase shift synthesis chip 2 and a multi-port synthesis network 3, wherein the antenna subarray, the radio frequency phase shift synthesis chip and the multi-port synthesis network are integrated on a multi-layer hybrid laminated printed circuit board and distributed on different layers of the multi-layer hybrid laminated printed circuit board, and the total number of components of the multi-layer hybrid laminated printed circuit board is greater than a preset threshold;

[0032] The antenna subarray is used to receive and transmit polarized wave signals based on microstrip antennas;

[0033] The radio frequency phase shift synthesis chip is used to control the phase and amplitude of the microstrip antenna in the antenna subarray to adjust the polarization characteristics of the antenna subarray;

[0034] The radio frequency phase shift synthesis chip is also used to adjust the power allocation ratio and phase difference of the polarized wave and change the beam parameters of the reconfigurable beam;

[0035] The multi-port synthesis network is used to form a preset number of independent reconfigurable beams.

[0036] Specifically, the antenna subarray 1 includes a plurality of antenna units, and the signal is received and transmitted through the antenna subarray 1. It should be noted that the specific number of antenna units included in the antenna subarray 1 is determined according to actual needs, and is not limited in this embodiment. For example, in one embodiment, the antenna subarray 1 may include 4 antenna units.

[0037] Furthermore, the antenna subarray 1 may include a microstrip antenna, which is a type of printed antenna and is usually made on a dielectric substrate. One side of the microstrip antenna is a metal thin layer as a ground plane, and the other side of the microstrip antenna is a metal patch engraved with a specific shape. It should be noted that the microstrip antenna has the advantages of low profile, light weight, small size, and easy conformality.

[0038] Furthermore, the microstrip antenna is mainly composed of three parts: a radiation patch, a dielectric substrate, and a ground plane. In specific implementation, the radiation patch is usually made of good conductor materials such as copper and gold, and is designed into various shapes (such as rectangle, circle, ring, etc.) as needed to achieve specific radiation characteristics. The dielectric substrate plays the role of supporting the radiation patch and providing a suitable electromagnetic environment. Its dielectric constant and thickness have an important influence on the performance of the microstrip antenna. The ground plane is located on the other side of the dielectric substrate, forming an electromagnetic field with the radiation patch, thereby generating radiation.

[0039] Furthermore, the microstrip antenna optimizes the impedance matching, coupling efficiency and radiation performance of the antenna subarray 1 through slot feeding.

[0040] A specific embodiment is given below to introduce the slot feeding of the antenna subarray 1 in detail:

[0041] Figure 3 This is a schematic diagram of antenna subarray slot feeding according to an exemplary embodiment of the present application. Figure 3 , L-shaped open-feed stripline is a specific antenna feeding structure used to provide RF signals to the antenna. The L-shaped open-feed stripline consists of an L-shaped metal stripline, one end of which is open and not in direct contact with the ground plane, and the other end is connected to the feeding point of the antenna.

[0042] For further information, please refer to Figure 3 The L-shaped design enables the feeding stripline to effectively couple the RF signal from the transmission line to the antenna radiator, thereby realizing the radiation function of the antenna. At the same time, the L-shaped design provides a certain flexibility, so that the feeding point can be more easily positioned at the ideal position on the antenna while maintaining the compactness of the feeding structure.

[0043] For further information, please refer to Figure 3 , the specific data types included in the stripline parameters are set according to actual needs, and are not limited in this embodiment. For example, in one embodiment, by adjusting the length of the L-shaped open-feed stripline, its inductance characteristics are directly affected, thereby affecting the impedance matching of the antenna, and the resonant frequency of the antenna can be adjusted to better match the working frequency band; by adjusting the width of the L-shaped open-feed stripline, its resistance and current carrying capacity are affected, the feeder loss is reduced, and the coupling efficiency is improved; by adjusting the opening angle of the L-shaped open-feed stripline, its inductance characteristics and impedance matching are affected, and the impedance bandwidth and radiation performance of the antenna are further optimized; by adjusting the feeder spacing of the L-shaped open-feed stripline, interference and energy loss are prevented, and complexity and occupied space are reduced.

[0044] In this way, by adjusting the stripline parameters of the L-shaped open feed stripline, the feeding performance of the antenna unit is significantly changed, and the impedance bandwidth, coupling efficiency and radiation characteristics of the antenna unit are optimized.

[0045] For further information, please refer to Figure 3 ,The H-shaped slot is a specific antenna design element, which is usually located on the ,coupling ground plane of the antenna and is used to achieve effective coupling between the antenna and the ,feeding system through specific size and layout design.

[0046] For further information, please refer to Figure 3 The specific size and shape of the H-shaped slot are set according to actual needs, and are not limited in this embodiment. By adjusting the size and shape of the H-shaped slot, the coupling efficiency between the antenna and the feeding system is significantly enhanced, which helps to reduce the loss of energy during transmission and improve the overall radiation efficiency of the antenna.

[0047] For further information, please refer to Figure 3 The specific position and number of the H-shaped slots are set according to actual needs, and are not limited in this embodiment. On the coupling ground plane of the antenna, the position of the slots should ensure a good coupling path with the feeding system (such as an L-shaped open feed strip line) while avoiding mutual interference between different slots.

[0048] In this way, the H-shaped slot allows the antenna to maintain good impedance matching within the working frequency band, reduces signal reflection, reduces the standing wave ratio, and improves the stability and efficiency of signal transmission. At the same time, the H-shaped slot can suppress the stray radiation that may be generated during the operation of the antenna unit, improving the purity and performance of the antenna unit.

[0049] Furthermore, the microstrip antenna can make the reception and transmission of the antenna subarray 1 more flexible by sequentially rotating.

[0050] A specific embodiment is given below to introduce in detail the structure and sequential rotation of the microstrip antenna in the antenna subarray 1:

[0051] The antenna subarray includes a plurality of parasitic patches, some of which constitute a first subarray, and the first subarray is repeated periodically; wherein the antenna units in the antenna subarray have a continuous first angle range of feed rotation, the axial ratio bandwidth of the microstrip antenna subarray with feed rotation is greater than the axial ratio bandwidth of a single parasitic patch and a single microstrip antenna of the first subarray, and the cross-polarization energy of the microstrip antenna subarray with feed rotation is less than the cross-polarization energy of a single parasitic patch and a single microstrip antenna of the first subarray. Optionally, the first angle range is 90°, that is, a continuous 90° feed rotation is completed.

[0052] Optionally, the antenna subarray 1 is specifically used to change the feeding phase relationship of the microstrip antenna by sequentially rotating the microstrip antenna;

[0053] The antenna subarray 1 is further specifically used to expand the axial ratio bandwidth of the microstrip antenna by sequentially rotating the microstrip antenna;

[0054] The antenna subarray 1 is also specifically used to reduce the cross-polarization energy of the microstrip antenna by sequentially rotating the microstrip antenna.

[0055] Figure 4 This is a schematic diagram showing the sequential rotation of antenna sub-arrays according to an exemplary embodiment of the present application. Figure 4 The method of sequentially rotating the microstrip antenna is to rotate and arrange adjacent subarrays or antenna units at a certain angle in the antenna subarray to achieve specific radiation characteristics or polarization performance. It should be noted that the specific rotation angle of the sequential rotation of the microstrip antenna is set according to actual needs and is not limited in this embodiment.

[0056] For further information, please refer to Figure 4 , the antenna subarray 1 can be regarded as composed of multiple 2×2 microstrip antennas, and each microstrip antenna in the antenna subarray 1 can be slightly rotated and adjusted.

[0057] For further information, please refer to Figure 4 In the antenna subarray 1, when the microstrip antennas rotate sequentially, the feeding phase of each antenna subarray 1 will also change accordingly. In specific implementation, the direction of the microstrip antenna relative to the reference point is changed by rotation, thereby affecting the propagation path and phase of the electromagnetic wave. In other words, through a reasonable rotation layout, the feeding phase can be optimized, so that the entire antenna subarray 1 has better phase consistency when forming a beam, thereby improving the directivity and gain of the beam.

[0058] For further information, please refer to Figure 4 The axial ratio bandwidth is an important parameter to measure the performance of circularly polarized antennas. It indicates the amplitude ratio and phase difference between the two orthogonal polarization components of antenna subarray 1 during circular polarization radiation. In specific implementation, the axial ratio bandwidth of the microstrip antenna subarray can be effectively expanded by sequentially rotating the microstrip antenna. In other words, sequential rotation can reduce the mutual coupling between microstrip antennas and reduce the polarization mismatch problem caused by coupling. In this way, sequential rotation can make the antenna maintain good circular polarization characteristics in a wider frequency range.

[0059] For further information, please refer to Figure 4 , cross-polarization energy refers to the radiation energy generated by antenna subarray 1 in a polarization direction that should not appear during the radiation process. It should be noted that for some communication systems, cross-polarization energy may cause signal interference and performance degradation. In specific implementation, the cross-polarization energy can be effectively reduced by sequentially rotating the microstrip antennas. In other words, the regular arrangement pattern between the microstrip antennas is destroyed by sequential rotation, reducing the coherent beams generated between them.

[0060] Furthermore, sequentially rotating the microstrip antenna can also make the radiation characteristics of the antenna subarray 1 in different directions more uniform, reduce cross-polarization radiation in a specific direction, and improve the performance stability of the communication system.

[0061] In this way, by sequentially rotating the microstrip antenna, the feeding phase relationship, axial ratio bandwidth and cross-polarization energy are effectively improved, and the overall performance of the antenna subarray 1 is significantly improved, so that it can better meet the needs of high-performance application scenarios such as low-Earth orbit satellite communications.

[0062] Furthermore, the microstrip antenna uses a dual-feed patch unit that can support multiple polarization modes at the same frequency. In specific implementation, multiple polarizations can be achieved by arranging or stacking multiple polarized radiation patches on the same substrate; or a single patch can be used but a special feeding structure can be used to generate multiple polarization radiations.

[0063] Furthermore, a dual-fed microstrip antenna can support multiple polarization modes. For example, in one embodiment, the microstrip antenna can receive and transmit horizontally polarized and vertically polarized linearly polarized waves. For another example, in another embodiment, the microstrip antenna can receive and transmit left-hand circularly polarized and right-hand circularly polarized polarized waves.

[0064] It should be noted that the feeding system in the antenna subarray 1 can generate a phase difference of 90 degrees to achieve circular polarization of the antenna subarray 1 .

[0065] Optionally, the microstrip antenna includes a parasitic patch, and the parasitic patch is located in the fourth functional layer and stacked in a vertical direction of the antenna unit.

[0066] Specifically, the parasitic patch is used to improve the matching bandwidth of the microstrip antenna. It should be noted that the parasitic patch is not directly connected to the feed network, but receives energy from the main radiation patch through near-field coupling and re-radiates it. In this way, the current distribution of the antenna can be changed, thereby affecting the antenna's input impedance, gain, radiation pattern, bandwidth and other performance parameters.

[0067] Furthermore, by changing the size, shape and position of the parasitic patch, the impedance bandwidth of the microstrip antenna can be expanded, so that the microstrip antenna maintains good matching characteristics in a wider frequency range.

[0068] Furthermore, the parasitic patch can affect the radiation pattern of the microstrip antenna. By adjusting the parasitic patch, the sidelobe level can be reduced and the directivity of the microstrip antenna can be improved.

[0069] Furthermore, by properly arranging the parasitic patches, the unwanted cross-polarization components can be suppressed and the polarization purity of the antenna can be improved.

[0070] The antenna subarray 1 provided in this embodiment can efficiently and reliably receive and transmit polarized wave signals and ensure high performance of polarized waves.

[0071] The fourth functional layer at least includes a plurality of fourth sub-layers stacked from top to bottom, and the fourth sub-layer located at the top provides a reference ground plane for the feeding strip line of the antenna sub-array.

[0072] An L-shaped open feed stripline and a coupled H-shaped slot ground plane are respectively provided on the fourth sublayer below the fourth sublayer located at the top layer. The L-shaped open feed stripline and the coupled H-shaped slot ground plane are not provided on the same layer. The coupled H-shaped slot is located vertically below the L-shaped open feed stripline. The L-shaped open feed stripline and the coupled H-shaped slot are periodically arranged in the corresponding fourth sublayer.

[0073] A specific embodiment is given below to introduce the multi-port synthesis network 3 in detail:

[0074] Specifically, the multi-port synthesis network 3 is responsible for effectively synthesizing the output signals from multiple receiving beamforming chips, or effectively distributing the input signals to multiple transmitting beamforming chips, thereby realizing multi-beam formation and signal amplification.

[0075] The multi-port synthesis network is arranged in the first functional layer, and the first functional layer includes a plurality of first sub-layers stacked from top to bottom, and the first sub-layer of the topmost layer is provided with a combination network of the first beam and the second beam; the plurality of first sub-layers adjacent to the topmost layer and the first sub-layer of the bottommost layer in the first functional layer are ground layers, and the first sub-layer above the first sub-layer of the bottommost layer is provided with a combination network of the third beam and the fourth beam. For example, the 2nd, 3rd, and 5th layers are used as ground layers, and the combination network of beams 1 and 2 is composed of 4 microstrip line Wilkinson power distribution stages stacked on the 1st layer, the 6th layer is an inter-layer RF connection layer, and the combination network of beams 3 and 4 is arranged on the 4th layer, and is composed of 1 stripline Wilkinson power distribution stage and other 3 microstrip line Wilkinson power distribution stages. While realizing the four-beam network, the inter-beam isolation of the network is realized.

[0076] In specific implementation, the specific model and specific number of the multi-port synthesis network 3 are selected according to actual needs, and are not limited in this embodiment. For example, in one embodiment, four sets of compact multi-layer embedded 16-in-1 Wilkinson power synthesis networks can be used as the multi-port synthesis network 3. It should be noted that the Wilkinson power synthesizer is a power distributor / synthesizer commonly used in radio frequency and microwave circuits, with good port isolation and low insertion loss characteristics, and can achieve high-ratio power synthesis through multi-stage cascading.

[0077] In specific implementation, these four sets of networks are independent of each other, and each set of networks includes a four-stage 16:1 Wilkinson power synthesizer, which can synthesize 16 RF output ports into one output port. In other words, this multi-port synthesis network 3 can support four independent reconfigurable beams.

[0078] In the polarization-adjustable array provided in this embodiment, the multi-port synthesis network is responsible for effectively synthesizing the output signals from multiple receiving beamforming chips, thereby realizing multi-beam formation and signal amplification.

[0079] A specific embodiment is given below to introduce the RF phase shift synthesis chip 2 in detail:

[0080] Specifically, the RF phase shift synthesis chip 2 is used to accurately control the phase and amplitude of the microstrip antenna in the antenna subarray 1 to achieve beamforming and beam scanning functions. In specific implementation, in a multi-beam phased array system, each antenna subarray 1 is connected to the RF phase shift synthesis chip 2. By adjusting the phase of each microstrip antenna, the wavefront shape of the polarized wave can be controlled, thereby achieving flexible adjustment of the beam pointing.

[0081] In a specific implementation, for example, in one embodiment, the RF phase shift synthesis chip 2 may include multiple phase shifters, each phase shifter corresponding to controlling the phase of a microstrip antenna in an antenna subarray 1. By changing the state of the phase shifter, the phase of the corresponding antenna unit signal can be adjusted, thereby forming a specific beam direction in the far field. It can be understood that the change in phase will directly affect the direction and shape of the beam.

[0082] Furthermore, the RF phase shift synthesis chip 2 also integrates an attenuator or a variable gain amplifier for controlling the amplitude of the antenna unit. In specific implementation, the shape of the beam and the gain distribution can be optimized by adjusting the amplitude of the microstrip antenna, and the sidelobe level can be reduced and the quality of the beam can be improved by appropriate amplitude taper.

[0083] Furthermore, the RF phase-shift synthesis chip 2 can synthesize a beam with a specific direction by precisely controlling the phase of each antenna unit in the array. In specific implementation, the RF phase-shift synthesis chip 2 can simultaneously control the phase of two groups of antenna feeds in an antenna subarray 1, and each group of feed ports corresponds to a different polarization direction. At the same time, the RF phase-shift synthesis chip 2 is closely integrated and coordinated with other components to adjust the power allocation ratio and phase difference of the polarized wave and change the beam parameters of the reconfigurable beam.

[0084] It should be noted that the specific data types included in the beam parameters are determined according to actual needs, and are not limited in this embodiment. For example, in one embodiment, the beam parameters include the beam pointing, beam width, beam gain, sidelobe level, and polarization mode of the reconfigurable beam.

[0085] The polarization adjustable array provided in this embodiment, the RF phase shift synthesis chip can adjust the phase and amplitude of the antenna subarray 1 in real time as needed to achieve rapid scanning and reconstruction of the beam. In this way, it can support application scenarios of multi-user data links and seamless switching. Furthermore, the RF phase shift synthesis chip is used to accurately control the formation and direction of the beam, providing a basis and support for the adjustment of polarization characteristics, ensuring the stability and continuity of communication.

[0086] Furthermore, the antenna subarray, the RF phase shift synthesis chip and the multi-port synthesis network are integrated on a multi-layer hybrid laminated printed circuit board and distributed on different layers, and the total number of components of the multi-layer hybrid laminated printed circuit board is greater than a preset threshold.

[0087] It should be noted that the specific value of the preset threshold is determined according to actual needs, and is not limited in this embodiment. For example, in one embodiment, the preset threshold may be determined based on a density value for avoiding interference between signals of different layers.

[0088] Furthermore, the antenna subarray and the input port and output port of the phase-shift synthesis chip, similarly, the multi-port synthesis network and the input port and output port of the phase-shift synthesis chip. In specific implementation, when reception is required, through the receiving link: the antenna subarray receives the signal, sends the data to the corresponding RF phase-shift synthesis chip, and synthesizes all the data through the multi-port synthesis network to complete the signal reception. When transmission is required, through the transmission link: the data is distributed through the multi-port synthesis network, and the distributed data is transmitted to the RF phase-shift synthesis chip, and the RF phase-shift synthesis chip controls the antenna subarray to transmit the signal.

[0089] Furthermore, according to the excited antenna subarrays and the phases of the antenna subarray configurations, a variety of reconfigurable polarized waves can be formed. In specific implementation, vertical linear polarization, horizontal linear polarization, left-hand circular polarization, right-hand circular polarization and other signals can be formed.

[0090] The polarization adjustable array provided in this embodiment integrates antenna subarrays, RF phase shift synthesis chips and multi-port synthesis networks on a multi-layer hybrid laminated printed circuit board, so that a large number of antenna subarrays, complex RF phase shift synthesis chips and multiple sets of 16:1 multi-port synthesis networks can be integrated in a compact space, and a miniaturized, low-profile antenna system can be realized through high integration. Further, by arranging different components on different layers of the multi-layer hybrid laminated printed circuit board, electrical performance optimization can be achieved, and low-loss, high-isolation signal synthesis can be achieved. Further, the design of the multi-layer hybrid laminated printed circuit board can effectively reduce electromagnetic interference and coupling between different components. Specifically, by distributing different functional modules on different layers and taking appropriate shielding measures (such as a bottom surface via shielding cage formed by a metal through-hole group), inter-layer interference can be significantly reduced and the overall performance of the system can be improved. Further, the layout and components of each layer of the multi-layer hybrid laminated printed circuit board can be adjusted according to specific application requirements. In addition, this design is also scalable, and the performance of the polarization adjustable array can be further improved and more components can be integrated by increasing the number of layers or optimizing the inter-layer connection. Furthermore, the multi-layer hybrid laminate printed circuit board supports the formation of multiple sets of independently reconfigurable beams, each beam is processed by a set of dedicated power synthesis networks, which are distributed on different layers of the multi-layer hybrid laminate printed circuit board to achieve high isolation and low loss. In this way, the polarization-adjustable array can process multiple beams simultaneously to meet the high data rate and multi-user connection requirements in low-Earth orbit satellite communications.

[0091] Optionally, the multi-layer hybrid laminated printed circuit board comprises a first functional layer, a second functional layer, a third functional layer and a fourth functional layer sequentially connected from top to bottom in a vertical direction, wherein;

[0092] The first functional layer is used to integrate the multi-port synthesis network;

[0093] The second functional layer is used to integrate the peripheral logic control interface and provide a control signal for controlling the radio frequency phase shift synthesis chip;

[0094] The third functional layer is used to integrate a power supply component to provide power for the radio frequency phase shift synthesis chip;

[0095] The fourth functional layer is used to integrate the antenna subarrays in a stacking manner, and the antenna subarrays include multiple antenna subarrays.

[0096] Specifically, the first functional layer integrates multiple groups of multi-port synthesis networks. It should be noted that the specific number of multi-port synthesis networks integrated in the first functional layer is determined according to actual needs, and is not limited in this embodiment. For example, in one embodiment, the first functional layer may include 4 groups of 16:1 multi-port synthesis networks.

[0097] In specific implementation, combined with the above embodiment, 64 RF output ports collected by 16 RF phase shift synthesis chips can be synthesized through 4 groups of 16:1 multi-port synthesis networks to form four independent reconfigurable beams. It should be noted that these multi-port synthesis networks of the first functional layer ensure low loss and high isolation of signals during the synthesis process through precise impedance matching and power distribution.

[0098] It should be noted that the RF phase shift synthesis chip can be located in different layers of the multi-layer hybrid laminated printed circuit board according to actual needs, and this is not limited in this embodiment. For example, in one embodiment, the RF phase shift synthesis chip can be located in the first functional layer.

[0099] Furthermore, the second functional layer provides control connections, allowing control signals to be input through the peripheral logic control interface to precisely control each component in the array to achieve flexible adjustment of the beam. It should be noted that important parameters such as beam direction, shape and gain can be dynamically adjusted through control signals.

[0100] In specific implementation, the second functional layer can connect multiple peripheral interfaces in series.

[0101] Furthermore, the third functional layer integrates power components to provide a stable and reliable power supply for the entire polarization-adjustable array, ensuring that all components can function properly.

[0102] It should be noted that the design of the third functional layer needs to consider factors such as voltage drop, noise suppression and electromagnetic compatibility to ensure the stability and reliability of the polarization-adjustable array.

[0103] Furthermore, the fourth functional layer integrates an antenna unit, receives satellite signals through the antenna subarray of the fourth functional layer, and improves the reliability and anti-interference capability of signal reception through a dual-polarization design.

[0104] In specific implementation, patch antennas are stacked on the fourth functional layer to make the structure of the antenna subarray compact, and to provide higher gain and directivity in a limited space.

[0105] It should be noted that the fourth functional layer adopts a slot-feeding design, which simplifies the integration of the antenna unit and the feeding network and improves the performance of the polarization-adjustable array.

[0106] The multi-layer hybrid laminated printed circuit board provided in this embodiment integrates a multi-port synthesis network through the first functional layer, integrates a peripheral logic control interface through the second functional layer, provides a control signal for controlling the RF phase-shift synthesis chip, integrates a power supply component through the third functional layer, provides power for the RF phase-shift synthesis chip, and integrates an antenna unit through the fourth functional layer. In this way, the multi-layer hybrid laminated printed circuit board makes full use of space based on the multi-layer design, so that a complex polarization adjustable array can be compactly implemented, reducing the volume and weight of the overall polarization adjustable array. Furthermore, by reasonably laying out the multi-layer hybrid laminated printed circuit board and designing the interlayer interconnection, it is possible to reduce the loss and interference during signal transmission and improve the electrical performance of the system. Furthermore, the multi-layer design of the multi-layer hybrid laminated printed circuit board helps to improve the thermal management performance of the polarization adjustable array, reduce the operating temperature of the polarization adjustable array through a reasonable interlayer layout and heat dissipation structure, and improve the stability and reliability of the polarization adjustable array.

[0107] Optionally, the first functional layer is the 1st to 6th layers of the multi-layer hybrid laminated printed circuit board, the second functional layer is the 7th to 9th layers of the multi-layer hybrid laminated printed circuit board, the third functional layer is the 10th layer of the multi-layer hybrid laminated printed circuit board, and the fourth functional layer is the 11th to 18th layers of the multi-layer hybrid laminated printed circuit board.

[0108] A specific embodiment is given below to introduce in detail the integration method of the polarization adjustable array:

[0109] Optionally, a group of metal through holes is periodically arranged on the antenna ground plate of the antenna subarray 1, and the group of metal through holes passes through a portion of the layers in the multi-layer hybrid laminated printed circuit board and connects the upper and lower ground plates of the antenna feed line, wherein the antenna ground plate and the group of metal through holes are located in the fourth functional layer;

[0110] The multi-port synthesis network 3 is integrated on the first functional layers of different layers, and uses the first functional layers of different layers as the bottom surface of the synthesis network.

[0111] Specifically, a multi-layer hybrid laminated printed circuit board is a support substrate for connecting electronic components. The multi-layer hybrid laminated printed circuit board is made by electronic printing, by coating an insulating substrate with a copper film, then etching away the unnecessary copper film, leaving the pre-designed circuit wiring, and finally making an electronic component with conductive wiring and an insulating substrate.

[0112] Furthermore, the specific number of layers of the multi-layer hybrid laminated printed circuit board is set according to actual needs, and is not limited in this embodiment. For example, in one embodiment, 18 layers of multi-layer hybrid laminated printed circuit boards can be provided to achieve compact multi-beam forming.

[0113] Furthermore, Figure 5 This is a schematic diagram of a metal through hole group shown in an exemplary embodiment of the present application. The metal through hole group is used to improve the performance of the antenna subarray 1, and the mutual coupling between antenna units can be reduced through the metal through hole group. In specific implementation, holes can be periodically punched on the ground plane of the antenna subarray 1 to form a cage-like structure around each antenna unit, thereby effectively isolating and reducing electromagnetic interference between different antenna units.

[0114] It should be noted that by introducing the periodic bottom through-hole shielding cage, the electromagnetic field between adjacent antenna units in the antenna subarray 1 and the antenna subarray 1 can be isolated, thereby reducing the mutual coupling effect. At the same time, the periodic bottom through-hole shielding cage can also change the current distribution around each antenna unit in the antenna subarray 1. This change can optimize the input impedance matching of the antenna in wide-band applications. Furthermore, the periodic bottom through-hole shielding cage can help improve the isolation between ports with different polarizations and reduce crosstalk between polarizations.

[0115] Furthermore, multiple multi-port synthesis networks 3 can be designed on different layers of a multi-layer hybrid laminated printed circuit board. In specific implementation, each set of multi-port synthesis networks 3 can occupy several layers of continuous multi-layer hybrid laminated printed circuit boards, and inter-layer interconnection is achieved based on vias. It should be noted that this multi-layer embedded design not only reduces the total volume and weight of the system, but also helps to improve the efficiency and stability of signal transmission, greatly saves space and achieves high-density integration.

[0116] Optionally, blind vias and buried vias are distributed in the multi-layer hybrid laminated printed circuit board;

[0117] The multi-layer hybrid laminated printed circuit board performs inter-layer interconnection based on the metal through hole group, the blind via and the buried via.

[0118] Specifically, a blind via is a hole that extends only from one side of the multi-layer hybrid laminated printed circuit board to a certain middle layer, while a buried via is completely located inside the multi-layer hybrid laminated printed circuit board and does not penetrate the entire multi-layer hybrid laminated printed circuit board.

[0119] It should be noted that blind vias and buried vias can further reduce the thickness and weight of the multi-layer hybrid laminated printed circuit board while providing the necessary electrical connection. In other words, blind vias and buried vias can reduce the impact of through holes on the surface layout of the multi-layer hybrid laminated printed circuit board, thereby improving wiring density and signal transmission efficiency.

[0120] Furthermore, the through holes on the multi-layer hybrid laminated printed circuit board may be metallized to ensure that the through holes have good electrical properties and mechanical strength. For example, in one embodiment, a conductive material (such as copper) may be filled in the through holes.

[0121] In this way, metallized via filling can ensure that the conductive material on the hole wall and inside the hole is continuous and uniform, reducing signal transmission loss and interference.

[0122] Furthermore, the location, size, spacing and arrangement of the through holes of the multi-layer hybrid laminated printed circuit board, as well as the optimization of the path and width of the inter-layer routing need to be reasonably designed to ensure the inter-layer interconnection design so that the signal can be transmitted smoothly and the stable operation of the system is guaranteed.

[0123] Optionally, the multi-layer hybrid laminated printed circuit board is integrated using a low profile.

[0124] Specifically, when preparing a multi-layer hybrid laminated printed circuit board with a low profile, the thickness of the polarization adjustable array can be ensured to meet the requirements. For example, in one embodiment, 18 layers of high-density hybrid laminated printed circuits are mixed and stacked to make the total thickness 3.15 mm, ensuring the low profile requirement.

[0125] In specific implementation, low-loss materials can be used to reduce the dielectric constant and loss tangent, so as to reduce the loss during signal transmission while maintaining a small physical thickness.

[0126] Furthermore, the antenna subarray 1 may be arranged in a compact manner, so that the antenna can achieve efficient radiation performance within a limited physical space.

[0127] Furthermore, multiple multi-port synthesis networks are embedded and integrated in different layers of a multi-layer hybrid laminate printed circuit board to achieve compact multi-beam forming, which reduces the need for external connections and routing, and further reduces the profile thickness of the system.

[0128] Furthermore, the application of L-shaped open feed striplines, H-shaped slots, and parasitic patches simplifies integration with active circuits while providing additional design freedom, helping to achieve excellent electrical performance while maintaining a low profile.

[0129] Optionally, the multi-port synthesis network uses a surface-mount isolation resistor in a 0201 package.

[0130] Specifically, the surface mount isolation resistor in a 0201 package is a very small component package that occupies a small board area, which helps to achieve high-density circuit design within a limited multi-layer hybrid laminate printed circuit board space, thereby improving the integration and compactness of the entire polarization adjustable array system.

[0131] It should be noted that the surface-mount isolation resistors in 0201 packages can provide stable electrical performance in a small size and meet the requirements of the multi-port synthesis network 3 for isolation resistors. These resistors are used to provide appropriate terminal loads on paths where signal transmission is not required to reduce signal reflection and power loss, while improving the isolation between ports.

[0132] Corresponding to the aforementioned embodiment of a polarization-adjustable array, the present application also provides an embodiment of a simulation method of a polarization-adjustable array.

[0133] Figure 6 This is a flow chart of a simulation method for a polarization-adjustable array according to an exemplary embodiment of the present application. Figure 6 The method provided in this embodiment is used to simulate the polarization adjustable array in the previous embodiment, and the method may include:

[0134] S601, establishing a target model of a polarization adjustable array;

[0135] Specifically, the target model is a simulation model based on all elements in the polarization-adjustable array. In specific implementation, the target model can be constructed based on the design of the antenna unit, the layout of the antenna unit, the RF phase-shift synthesis chip, the power synthesis network, and the control logic. For example, in one embodiment, a dual-feed stacked patch antenna can be selected in the target model to form an 8×8 array, and a slot-fed structure can be selected to simulate the feeding network, and 4 sets of independent 16:1 Wilkinson power synthesis networks can be selected as the power synthesis network, and the polarization-adjustable array can be connected based on SPI logic control.

[0136] Furthermore, a method for constructing the target model may be selected according to actual conditions, and this is not limited in this embodiment. For example, in one embodiment, the target model may be modeled in ANSYS HFSS, a three-dimensional electromagnetic simulation software.

[0137] Furthermore, in the simulation software, the target model is divided into several model networks for easy management and optimization. In the specific implementation, the design of the antenna unit, the layout of the antenna unit, the RF phase shift synthesis chip, the power synthesis network and the control logic network are divided into different model networks. It should be noted that each model network has its specific functions and performance requirements and needs to be simulated and optimized separately.

[0138] S602: Determine the parameters to be designed in the target model, wherein the parameters to be designed at least include component positions; perform simulation calculation on the target model based on a preset simulation type to obtain a simulation result.

[0139] Specifically, simulation parameters are a set of values ​​that define the simulation environment and conditions. In specific implementation, the specific data type of the simulation parameters is determined according to actual needs, and this is not limited in this embodiment. It should be noted that the simulation parameters can be determined according to the simulation type, and the simulation parameters may include an operating frequency range, a scanning angle range, boundary conditions, an excitation source type, and a solution setting.

[0140] When this step is implemented, the simulation software will solve the key performance indicators that affect the polarization adjustable array according to the set simulation parameters and target model. It should be noted that during the simulation process, the simulation software will consider the interaction and coupling effects between all model networks.

[0141] S603: Adjust the target model based on the simulation result until target array data that meets preset design requirements is obtained to determine parameters to be designed.

[0142] Specifically, the specific data types included in the simulation results are determined according to actual needs, and are not limited in this embodiment. For example, in one embodiment, the simulation results may include a reflection coefficient curve, a gain mode diagram, an axial ratio curve, and the like.

[0143] Furthermore, the performance corresponding to the target model can be determined through the simulation results. For example, in one embodiment, key indicators such as the beam scanning range, gain, axial ratio, and isolation of the polarization-adjustable array are determined through the simulation results.

[0144] Furthermore, after the performance of the target model is determined based on the simulation results, if the design requirements are not met, the target model needs to be adjusted and optimized. For example, in one embodiment, the size and shape of the antenna unit can be adjusted, the structure of the feed network can be changed, the layout of the power synthesis network can be optimized, and the setting of the control logic can be adjusted.

[0145] It should be noted that the design requirements are determined in advance by the staff according to the actual situation, and are not limited to this in this embodiment.

[0146] Furthermore, the target array data is the parameters corresponding to the target model that meets the design requirements. In specific implementation, after adjustment based on the simulation results, it is necessary to re-simulate the calculation to verify the improvement effect. After multiple iterations, the target array data that meets the design requirements can be obtained.

[0147] Optionally, the layer structure of the polarization-adjustable array and the positions of different components in the array are determined based on the target array data; wherein the polarization-adjustable array includes an antenna unit, a radio frequency phase-shift synthesis chip and a multi-port synthesis network.

[0148] Specifically, the target array data may include the layer structure of the polarization-adjustable array, and the number of layers of the multi-layer hybrid laminated printed circuit board and the positions and quantities of different components in different layers may be determined through the layer structure. For example, in one embodiment, the polarization-adjustable array includes an antenna unit, a radio frequency phase-shift synthesis chip, and a multi-port synthesis network.

[0149] The simulation method of the polarization adjustable array provided in this embodiment first establishes the target model of the polarization adjustable array, divides the model network of the target model, and then generates simulation parameters based on the preset simulation type, performs simulation calculation on the target model based on the simulation parameters, obtains simulation results, and finally adjusts the target model based on the simulation results to obtain target array data that meets the design requirements. In this way, the feasibility of the design of the polarization adjustable array can be verified before the actual production of the polarization adjustable array. Further, the simulation results provide detailed data on the performance of the polarization adjustable array, and the problems existing in the design can be obtained. The polarization adjustable array can be adjusted and optimized through the simulation results, thereby improving the overall performance of the polarization adjustable array. Further, the simulation results provide an important reference basis for the production of the polarization adjustable array, which helps to reduce the time and cost of field testing. Further, in the simulation process, multiple design schemes can be proposed for simulation, so as to conduct a comprehensive performance evaluation and comparison of these schemes, thereby selecting the optimal design scheme. In this way, through simulation design, the effect and performance of the polarization adjustable array can be guaranteed.

[0150] Optionally, the step of adjusting the target model based on the simulation result to obtain target array data that meets the design requirements may include:

[0151] (1) Determining a first target parameter of an L-shaped open feed stripline based on the target array data, and determining a second target parameter of an H-shaped slot based on the target array data; wherein the first target parameter characterizes a feeding performance of the antenna unit, and the second target parameter characterizes a coupling efficiency of the antenna unit.

[0152] Specifically, the first target parameter is used to characterize the feeding performance of the antenna unit, and the first target parameter directly affects the impedance matching and transmission efficiency of the antenna. In specific implementation, the width, length, opening size and other parameters of the L-shaped open feed strip line are determined by the target array data, and these parameters are determined as the first target parameter.

[0153] It should be noted that by optimizing the L-shaped open feed strip line through the first target parameter, the antenna unit can achieve good impedance matching and a lower reflection coefficient within the working frequency band.

[0154] Furthermore, the second target parameter is used to characterize the coupling efficiency of the antenna unit, and the second target parameter directly affects the energy transmission efficiency between the feed network and the radiating part of the antenna unit. In specific implementation, the size, shape, position and other parameters of the H-shaped slot are determined by the target array data, and these parameters are determined as the second target parameter.

[0155] It should be noted that by optimizing the size of the H-shaped slot through the second target parameter, the coupling efficiency of the antenna unit can be optimized and the radiation performance can be improved.

[0156] (2) Adjusting the L-shaped open feed stripline based on the first target parameter, and adjusting the H-shaped slot based on the second target parameter.

[0157] In a specific implementation, the size of the L-shaped open feed strip line is fine-tuned according to the first target parameter, and the size, shape and position of the H-shaped slot are fine-tuned according to the second target parameter.

[0158] The simulation method of the polarization adjustable array provided in this embodiment first determines the first target parameter of the L-shaped open feed stripline based on the target array data, and determines the second target parameter of the H-shaped slot based on the target array data; wherein the first target parameter characterizes the feeding performance of the antenna unit, and the second target parameter characterizes the coupling efficiency of the antenna unit, and then adjusts the L-shaped open feed stripline based on the first target parameter, and adjusts the H-shaped slot based on the second target parameter. In this way, by accurately adjusting the parameters of the L-shaped open feed stripline and optimizing the impedance matching performance of the antenna unit, a lower reflection coefficient can be achieved within the working frequency band, the transmission efficiency of the radio frequency signal can be improved, and the power loss caused by reflection can be reduced. Furthermore, by adjusting the size, shape and position of the H-shaped slot, the energy transmission between the feeding network and the radiating part of the antenna unit can be improved, ensuring that more energy is effectively radiated and reducing energy loss. In this way, due to the improvement of the feeding performance and coupling efficiency, the radiation performance of the antenna unit will also be enhanced accordingly, making the design parameters of the antenna unit more reasonable and stable, which helps to reduce the performance fluctuation and failure rate of the polarization adjustable array in practical applications, and ensures the anti-interference ability and environmental adaptability of the polarization adjustable array.

[0159] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A polarization adjustable array, characterized in that: The array comprises: an antenna subarray, a radio frequency phase shift synthesis chip and a multi-port synthesis network, wherein the antenna subarray, the radio frequency phase shift synthesis chip and the multi-port synthesis network are integrated on a multi-layer hybrid laminated printed circuit board and distributed on different layers of the multi-layer hybrid laminated printed circuit board, and the total number of components of the multi-layer hybrid laminated printed circuit board is greater than a preset threshold; The antenna subarray is used to receive and transmit polarized wave signals based on microstrip antennas; The radio frequency phase shift synthesis chip is used to control the phase and amplitude of the microstrip antenna in the antenna subarray to adjust the polarization characteristics of the antenna subarray; The radio frequency phase shift synthesis chip is also used to adjust the power distribution ratio and phase difference of the polarized wave and change the beam parameters of the reconfigurable beam; The multi-port synthesis network is used to form a preset number of independent reconfigurable beams; The multi-layer hybrid laminated printed circuit board comprises a first functional layer, a second functional layer, a third functional layer and a fourth functional layer connected sequentially from top to bottom in a vertical direction, wherein: The first functional layer is used to integrate the multi-port synthesis network; The second functional layer is used to integrate the peripheral logic control interface and provide a control signal for controlling the radio frequency phase shift synthesis chip; The third functional layer is used to integrate a power supply component to provide power for the radio frequency phase shift synthesis chip; The fourth functional layer is used to integrate the antenna subarrays in a stacking manner, and the antenna subarrays include multiple antenna subarrays.

2. The polarization adjustable array according to claim 1, characterized in that: The antenna subarray includes a plurality of parasitic patches, a portion of the plurality of parasitic patches constitutes a first subarray, and the first subarray is repeated periodically; The antenna units in the antenna subarray have a feed rotation within a continuous first angle range, the axial ratio bandwidth of the microstrip antenna subarray with feed rotation is greater than the axial ratio bandwidth of a single parasitic patch and a single microstrip antenna of the first subarray, and the cross-polarization energy of the microstrip antenna subarray with feed rotation is less than the cross-polarization energy of a single parasitic patch and a single microstrip antenna of the first subarray.

3. The polarization adjustable array according to claim 2, characterized in that: A group of metal through holes are periodically arranged on the antenna ground plate of the antenna unit, and the group of metal through holes passes through some layers in the multi-layer hybrid laminated printed circuit board and connects the upper and lower ground plates of the antenna feed line, wherein the antenna ground plate and the group of metal through holes are located in the fourth functional layer.

4. The polarization adjustable array according to claim 3, characterized in that: The multi-layer hybrid laminated printed circuit board is provided with blind vias and buried vias; The multi-layer hybrid laminated printed circuit board performs inter-layer interconnection based on the metal through hole group, the blind via and the buried via.

5. The polarization-adjustable array according to claim 1, characterized in that: The first functional layer includes multiple first sublayers stacked from top to bottom, and the first sublayer of the topmost layer is provided with a combination network of the first beam and the second beam; the multiple first sublayers adjacent to the topmost layer and the first sublayer of the bottommost layer in the first functional layer are ground layers, and the first sublayer above the bottommost first sublayer is provided with a combination network of the third beam and the fourth beam.

6. The polarization-adjustable array according to claim 1, characterized in that: The fourth functional layer at least includes a plurality of fourth sublayers stacked from top to bottom, the fourth sublayer located at the top provides a reference ground plane for the feeding strip line of the antenna subarray; the fourth sublayer below the fourth sublayer located at the top layer is respectively provided with an L-shaped open feeding strip line and a coupled H-shaped slot ground plane, the L-shaped open feeding strip line and the coupled H-shaped slot ground plane are not arranged in the same layer, the coupled H-shaped slot is located vertically below the L-shaped open feeding strip line, and the L-shaped open feeding strip line and the coupled H-shaped slot are periodically arranged in the corresponding fourth sublayer.

7. A method for simulating a polarization-adjustable array, for simulating the polarization-adjustable array as claimed in any one of claims 1 to 6, characterized in that: The method comprises: Establish target model for polarization-tunable array; Determine the parameters to be designed in the target model, the parameters to be designed at least include the size and position of components, perform simulation calculation on the target model based on a preset simulation type, and obtain a simulation result; The target model is adjusted based on the simulation results until target array data that meets preset design requirements is obtained to determine the parameters to be designed.

8. The method according to claim 7, characterized in that After adjusting the target model based on the simulation results until target array data meeting preset design requirements is obtained, the method further includes: The layer structure of the polarization-adjustable array and the positions of different components in the array are determined based on the target array data; wherein the polarization-adjustable array includes antenna subarrays, radio frequency phase-shift synthesis chips and multi-port synthesis networks.

9. The method according to claim 8, characterized in that Adjusting the target model based on the simulation results to obtain target array data that meets the design requirements includes: Determine a first target parameter of an L-shaped open feed stripline based on the target array data, and determine a second target parameter of an H-shaped slot based on the target array data; wherein the first target parameter characterizes the feeding performance of the antenna subarray, and the second target parameter characterizes the coupling efficiency of the antenna subarray; The L-shaped open feed stripline is adjusted based on the first target parameter, and the H-shaped slot is adjusted based on the second target parameter.

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