Communication integrated antenna integrated board and communication satellite

Abstract

The present application provides a communication integrated antenna integrated board and a communication satellite, relating to the field of communication antenna technology, including: an antenna substrate, the first surface of the antenna substrate is used to be fixed to a satellite platform, a synthetic aperture radar antenna, which is arranged on the second surface of the antenna substrate, and a test antenna, which is arranged on the second surface of the antenna substrate, wherein the setting position, polarization mode, and polarization type of each antenna on the second surface of the antenna substrate are determined by the following method: determining the isolation simulation curve between the synthetic aperture radar antenna and any antenna in the test antenna, the test antenna including a data transmission antenna, a remote control antenna, and a telemetry antenna; based on all the isolation simulation curves, determining the setting position, polarization mode, and polarization type of the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna on the second surface of the antenna substrate. Through the present application, the antenna is integrated on the antenna substrate, reducing the weight of the entire satellite and lowering the launch cost.

Description

Technical Field

[0001] The present application relates to the technical field of communication antennas, and in particular to a communication integrated antenna integrated board and a communication satellite. Background Art

[0002] At present, in current satellite platforms, synthetic aperture radar antennas (SAR antennas, Synthetic Aperture Radar), tracking and control antennas and data transmission antennas are usually deployed as independent individuals on the ground side, such as Figure 1 As shown, Figure 1 Because the SAR antenna 5 is large (up to several meters), it often extends beyond the mounting surface of the satellite platform 4. Therefore, the telemetry antenna 2, remote control antenna 3, and data transmission antenna 1 must be externally mounted using an extension bracket to avoid obstruction of the SAR antenna. While this solution can resolve the physical interference problem between antennas, it has the following significant technical drawbacks in practical applications:

[0003] 1) Structural stability risk: The measurement and control antenna is relatively light, so the bracket structure is stable. However, if the data transmission antenna uses active phased array technology (which is heavy and large in size), the bracket strength requirements will be significantly increased, posing a risk of structural failure.

[0004] 2) Increased weight and cost: The introduction of an extension bracket directly increases the weight of the entire satellite, leading to an increase in launch costs (launch costs are positively correlated with satellite mass).

[0005] 3) Transportation and assembly risks: The extension bracket is easily bumped during transportation, assembly and environmental testing, causing damage to the measurement and control / data transmission antenna.

[0006] 4) Attitude control design complexity: Conventional layouts require adjusting the satellite attitude for different tasks (such as SAR scanning and data transmission communications), which causes the attitude control system to frequently switch working modes, increasing design complexity and energy consumption. Summary of the Invention

[0007] In view of this, the purpose of the present application is to provide a communication integrated antenna integrated board and a communication satellite to overcome at least one of the above-mentioned defects.

[0008] In a first aspect, an embodiment of the present application provides a communication integrated antenna integrated board, the method comprising: an antenna substrate, the first surface of the antenna substrate being used to be fixed to a satellite platform, a synthetic aperture radar antenna being arranged on the second surface of the antenna substrate, and a test antenna being arranged on the second surface of the antenna substrate, wherein the setting position, polarization mode and polarization type of each antenna on the second surface of the antenna substrate are determined in the following manner: determining an isolation simulation curve between the synthetic aperture radar antenna and any one of the test antennas, the test antennas comprising a data transmission antenna, a remote control antenna and a telemetry antenna; and determining the setting position, polarization mode and polarization type of the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna and the telemetry antenna on the second surface of the antenna substrate according to all isolation simulation curves.

[0009] In an optional embodiment of the present application, the synthetic aperture radar antenna, data transmission antenna, remote control antenna and telemetry antenna are all arranged on the second surface of the antenna substrate in the form of microstrip array antennas. The second surface of the antenna substrate includes a first area and a second area arranged adjacent to each other. The first area is arranged at a first side edge of the antenna substrate, and the second area is arranged at a second side edge of the antenna substrate. The first side and the second side are arranged opposite to each other. The synthetic aperture radar antenna is arranged in the first area, and the data transmission antenna, the remote control antenna and the telemetry antenna are arranged in the second area. The data transmission antenna, the remote control antenna and the telemetry antenna are arranged in a one-dimensional linear arrangement, parallel to the second side, and adjacent to each other in the second area.

[0010] In an optional embodiment of the present application, the polarization type of the synthetic aperture radar antenna is different from the polarization types of the data transmission antenna, the remote control antenna and the telemetry antenna, and the corresponding polarization modes between two adjacent antennas among the data transmission antenna, the remote control antenna and the telemetry antenna are different.

[0011] In an optional embodiment of the present application, the setting position, polarization mode and polarization type of the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna and the telemetry antenna on the second surface of the antenna substrate are determined by the following method: an initial simulation test model is constructed, and the initial simulation test model includes the initial position of the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna and the telemetry antenna on the second surface of the antenna substrate, the initial polarization type of each antenna and the initial polarization mode of each antenna; for each antenna, the operating frequency band corresponding to the antenna at the initial position, initial polarization type and initial polarization mode is determined based on the initial simulation test model; for the data transmission antenna, the remote control antenna and the telemetry antenna, the operating frequency band corresponding to the antenna at the initial position, initial polarization type and initial polarization mode is determined based on the initial simulation test model; For each antenna in the line, an isolation simulation curve is determined when the antenna and the synthetic aperture radar antenna are both in the corresponding operating frequency band and perform signal transmission, wherein the abscissa of the isolation simulation curve is the operating frequency, and the ordinate of the isolation simulation curve is the isolation; for each antenna in the data transmission antenna, the remote control antenna, and the telemetry antenna, based on the isolation simulation curve corresponding to the antenna and the isolation threshold corresponding to the antenna, a verification result of the initial position, initial polarization type, and initial polarization mode corresponding to the antenna in the initial simulation test model is determined; based on the verification result, the setting position of the antenna on the second surface of the antenna substrate, the polarization type, and the polarization mode under the polarization type are determined.

[0012] In an optional embodiment of the present application, the verification result is determined in the following manner: for the isolation simulation curve corresponding to each antenna among the digital transmission antenna, the remote control antenna and the telemetry antenna and the synthetic aperture radar antenna, determine whether the peak value of the isolation simulation curve corresponding to the antenna is lower than the isolation threshold corresponding to the antenna; if the peak value of the isolation simulation curve of each antenna among the digital transmission antenna, the remote control antenna and the telemetry antenna is lower than the isolation threshold corresponding to the antenna, it is determined as the first verification result; if the peak value of the isolation simulation curve of any one of the digital transmission antenna, the remote control antenna and the telemetry antenna is not lower than the isolation threshold corresponding to the antenna, it is determined as the second verification result; if the peak value of the isolation simulation curve of any two antennas among the digital transmission antenna, the remote control antenna and the telemetry antenna is not lower than the isolation threshold corresponding to the antenna, it is determined as the third verification result; if the peak value of the isolation simulation curve of each antenna among the digital transmission antenna, the remote control antenna and the telemetry antenna is not lower than the isolation threshold corresponding to the antenna, it is determined as the fourth verification result.

[0013] In an optional embodiment of the present application, the verification result is used to determine the setting position, polarization type, and polarization mode of the antenna on the second surface of the antenna substrate, including: when it is detected that the verification result is a first verification result, the initial position of each antenna on the second surface of the antenna substrate, the initial polarization type of each antenna, and the initial polarization mode of each antenna in the initial simulation test model are determined as the final setting position, polarization mode, and polarization type of each antenna for practical application; when it is detected that the verification result is a second verification result, a first candidate antenna is determined, and the first setting position and first polarization type of the first candidate antenna in the initial simulation test model are updated until the peak value of the isolation simulation curve of the first candidate antenna is lower than the isolation threshold, and the final setting position, polarization mode, and polarization type are determined according to the updated corresponding first setting position, initial polarization mode, and first polarization type, the first candidate antenna including an antenna, the first candidate antenna being the test antenna whose peak value of the isolation simulation curve is not lower than the antenna. line corresponding to the isolation threshold of the line; when it is detected that the verification result is the third verification result, a second candidate antenna is determined, and the second setting position and the second polarization type of the second candidate antenna in the initial simulation test model are updated until the peak value of the isolation simulation curve of the second candidate antenna is lower than the isolation threshold, and the final setting position, polarization mode and polarization type are determined according to the corresponding second setting position, initial polarization mode and second polarization type after the update, the second candidate antenna includes two antennas, and each antenna in the second candidate antenna is an antenna whose peak value of the isolation simulation curve in the test antenna is not lower than the isolation threshold corresponding to the antenna; when it is detected that the verification result is the fourth verification result, the third setting position of each antenna on the second surface of the antenna substrate in the initial simulation test model and the third polarization type of each antenna are updated until the peak value of the isolation simulation curve of each antenna is lower than the isolation threshold, and the final setting position, polarization mode and polarization type are determined according to the corresponding third setting position, initial polarization mode and third polarization type after the update.

[0014] In an optional embodiment of the present application, the operating frequency band of each antenna is determined in the following manner: a working curve of each antenna for signal transmission under the initial position, initial polarization type, and initial polarization mode corresponding to the initial simulation test model is obtained, the horizontal axis of the working curve is the operating frequency, and the vertical axis of the working curve is a working index for measuring the signal transmission efficiency of the antenna; for the index threshold of each antenna, the frequency interval corresponding to the index threshold is intercepted on the working curve of the antenna as the operating frequency band of the antenna.

[0015] In an optional embodiment of the present application, the communication integrated antenna integrated board also includes a satellite main controller, wherein the satellite main controller is used to change the orientation of the second surface of the antenna substrate when receiving a data transmission request from any one of the synthetic aperture radar antenna, data transmission antenna, remote control antenna and telemetry antenna, so as to control the antenna that sends the data transmission request among the synthetic aperture radar antenna, data transmission antenna, remote control antenna and telemetry antenna to transmit data with the ground communication station.

[0016] In a second aspect, an embodiment of the present application further provides a simulation test method, the method comprising: constructing an initial simulation test model, the initial simulation test model comprising the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna and the telemetry antenna at the initial position of the second surface of the antenna substrate, the initial polarization type of each antenna and the initial polarization mode of each antenna; for each antenna, determining the corresponding working frequency band of the antenna at the initial position, initial polarization type and initial polarization mode based on the simulation test model; for each antenna among the data transmission antenna, the remote control antenna and the telemetry antenna, determining the corresponding working frequency band of the antenna at the initial position, initial polarization type and initial polarization mode; for each antenna among the data transmission antenna, the remote control antenna and the telemetry antenna, determining the corresponding working frequency band of the antenna and the synthetic aperture radar antenna; An isolation simulation curve when signal transmission is performed in a corresponding operating frequency band, wherein the abscissa of the isolation simulation curve is the operating frequency, and the ordinate of the isolation simulation curve is the isolation; for each antenna among the digital transmission antenna, the remote control antenna, and the telemetry antenna, according to the isolation simulation curve corresponding to the antenna and the isolation threshold corresponding to the antenna, a verification result of the initial position, initial polarization type, and initial polarization mode corresponding to the antenna in the initial simulation test model is determined; based on the verification result, the setting position of the antenna on the second surface of the antenna substrate, the polarization type, and the polarization mode under the polarization type are determined.

[0017] In a third aspect, an embodiment of the present application also provides a communication satellite, comprising: a satellite platform; a satellite main controller, arranged inside the communication satellite body; a communication integrated antenna integrated board as described in any of the above items, wherein the communication pins of each antenna in the communication integrated antenna integrated board are connected to the satellite main controller to form information interaction.

[0018] The communication integrated antenna integrated board and communication satellite provided in the embodiments of the present application arrange the synthetic aperture radar (SAR) antenna and test antennas such as data transmission, remote control, and telemetry on the second surface of the antenna substrate. The first surface of the substrate is fixed to the satellite platform. Through simulation analysis of the isolation curve between the SAR antenna and each test antenna, the position, polarization mode (such as linear polarization, circular polarization) and type of each antenna are determined to ensure performance synergy, thereby achieving a lightweight, low-cost and high-performance satellite system.

[0019] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of a satellite platform and antennas in the prior art provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of a satellite platform and communication integrated antenna integrated board provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of an antenna substrate provided in an embodiment of the present application;

[0024] Figure 4 A flowchart for determining the location, polarization mode, and polarization type of each antenna on the second surface of the antenna substrate provided in an embodiment of the present application;

[0025] Figure 5 A schematic diagram of the working curve of the data transmission antenna provided in an embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of a simulation curve of the isolation between the telemetry antenna and the synthetic aperture radar antenna provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is claimed, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work falls within the scope of protection of the present application.

[0028] First, the application scenarios to which this application is applicable are introduced. This application can be applied in the field of communication antenna technology.

[0029] Synthetic Aperture Radar (SAR) antennas use the relative motion between the radar platform and the observed target to coherently process the broadband echo signals received by the radar at different spatial positions over a certain accumulation time to obtain a two-dimensional image of the target, thereby truly seeing the true image of the target.

[0030] Onboard telemetry antennas, remote control antennas, and data transmission antennas serve as the communication bridges between the satellite and the ground. Simply put, the remote control antenna receives remote control commands from the ground tracking and control station and then performs corresponding operations. The telemetry antenna transmits satellite status information to the ground station, allowing the ground station to understand the satellite platform's overall status. The data transmission antenna transmits historical telemetry data and payload-generated data to the ground. Compared to the telemetry antenna, the data transmission antenna has a much higher data rate than the telemetry antenna, making it suitable for downlinking large amounts of data.

[0031] Research has found that in the existing technology, due to the obstruction of the SAR antenna, the structural support of the measurement and control data transmission antenna must be extended, which has the following disadvantages:

[0032] First, for the conventional layout scheme, there is a certain risk in the structural stability of the extended bracket. The structural strength of the relatively light-weight passive measurement and control antenna is relatively stable. However, if the digital transmission antenna is an active phased array antenna, the weight and size will be relatively large, and the structural strength requirements of the extended bracket will be higher.

[0033] Second, the design of the extended bracket will increase the weight of the entire satellite and increase the cost during launch.

[0034] Third, after the satellite is assembled, it will undergo environmental testing. The extended bracket is at risk of collision during transportation, causing damage to the measurement, control and digital transmission antenna.

[0035] Fourth, the conventional layout scheme requires different attitude control of the platform when performing different tasks for the satellite platform, which increases the complexity of the attitude control design.

[0036] Based on this, the embodiment of the present application provides a communication integrated antenna integrated board and a communication satellite. By integrating a synthetic aperture radar antenna and a data transmission / remote control / telemetry test antenna on the second surface of the antenna substrate, the isolation simulation curve is used to optimize the layout and polarization configuration of each antenna, thereby realizing an integrated design of the antenna and the satellite body, achieving comprehensive benefits such as weight reduction and cost reduction, avoiding structural interference, and simplifying attitude control.

[0037] See also Figure 2 , Figure 2 This is a schematic diagram of a satellite platform and a communication integrated antenna integrated board provided in an embodiment of the present application. Figure 2As shown in , the communication integrated antenna integrated board provided in the embodiment of the present application includes an antenna substrate 6, a synthetic aperture radar antenna 4, a data transmission antenna 1, a remote control antenna 2 and a telemetry antenna 3.

[0038] The first surface of the antenna substrate 6 is used to be fixed to the satellite platform 5 , the synthetic aperture radar antenna 4 is arranged on the second surface of the antenna substrate 6 , and the test antenna is arranged on the second surface of the antenna substrate 6 .

[0039] Here, through an integrated design, multiple antennas are integrated into a single substrate, significantly reducing the physical space occupied by the satellite platform, lowering the system complexity, and reducing the weight of the satellite, providing flexibility for the design and deployment of other functional modules of the satellite. The positions of 1, 2 and 3 can be interchanged according to design requirements.

[0040] The arrangement position, polarization mode, and polarization type of each antenna on the second surface of the antenna substrate are determined by:

[0041] Determine the isolation simulation curve between the synthetic aperture radar antenna and any one of the test antennas.

[0042] The test antenna includes a data transmission antenna 1, a remote control antenna 2 and a telemetry antenna 3.

[0043] According to all the isolation simulation curves, the arrangement positions, polarization modes and polarization types of the synthetic aperture radar antenna 4, the data transmission antenna 1, the remote control antenna 2 and the telemetry antenna 3 on the second surface of the antenna substrate are determined.

[0044] Through isolation simulation curve analysis, the layout and polarization configuration of each antenna are optimized, effectively reducing electromagnetic interference between antennas, ensuring that synthetic aperture radar antennas, data transmission antennas, remote control antennas and telemetry antennas can still maintain high performance and stability in complex electromagnetic environments, improving communication quality and data transmission efficiency. At the same time, through simulation technology, the rationality of the antenna layout is pre-evaluated, reducing the number of physical tests and iterations, significantly shortening the R&D cycle and reducing development costs.

[0045] Specifically, see Figure 3 , Figure 3 This is a schematic diagram of the antenna substrate provided in the embodiment of the present application. Figure 3 As shown in , the antenna substrate provided in the embodiment of the present application includes a synthetic aperture radar antenna 4, a data transmission antenna 1, a remote control antenna 2 and a telemetry antenna 3.

[0046] The synthetic aperture radar antenna 4, the data transmission antenna 1, the remote control antenna 5 and the telemetry antenna 3 are all arranged on the second surface of the antenna substrate 6 in the form of microstrip array antennas. The second surface of the antenna substrate 6 includes a first area and a second area arranged adjacent to each other. The first area is arranged at the first side position of the antenna substrate 6, and the second area is arranged at the second side position of the antenna substrate 6. The first side and the second side are arranged opposite to each other. The synthetic aperture radar antenna 4 is arranged in the first area, and the data transmission antenna 1, the remote control antenna 2 and the telemetry antenna 3 are arranged in the second area. The data transmission antenna 1, the remote control antenna 2 and the telemetry antenna 3 are arranged in a one-dimensional linear arrangement, parallel to the second side, and adjacent to each other in the second area.

[0047] Here, the synthetic aperture radar antenna 4, data transmission antenna 1, remote control antenna 2, and telemetry antenna 3 all employ microstrip array antennas. Microstrip array antennas have the advantages of small size, light weight, and easy integration, making them ideal for platforms such as satellites where weight and space are strictly restricted. All antennas are mounted on the second surface of the antenna substrate 6. This design facilitates integration of the antennas with the satellite platform 5, reducing the connection structure and signal transmission loss between the antennas and the satellite platform.

[0048] Microstrip array, also known as microstrip antenna array, refers to an antenna system composed of multiple microstrip antenna units arranged and combined according to a certain pattern.

[0049] The second surface of the antenna substrate is divided into adjacent first and second regions. This regional division provides independent layout space for antennas with different functions, facilitating rational layout design based on the antenna's characteristics and operating requirements. The first region is located on the first side of the antenna substrate, and the second region is located on the second side of the antenna substrate, with the first and second sides positioned opposite each other. This relative regional layout helps optimize the antenna's radiation direction and electromagnetic compatibility.

[0050] The synthetic aperture radar antenna is set in the first area. Since the synthetic aperture radar antenna usually requires a large radiation area and a specific radiation direction, setting it in the first area can make full use of the space in the area and meet its working requirements.

[0051] The data transmission antenna, remote control antenna and telemetry antenna are arranged in the second area and arranged in a one-dimensional linear manner, parallel to the second side, and adjacent to each other. This layout can reduce mutual interference between antennas and improve antenna performance and reliability. At the same time, the one-dimensional linear arrangement and the design parallel to the second side are also conducive to the antenna's radiation direction control and signal transmission.

[0052] Preferably, the polarization type of the synthetic aperture radar antenna is different from the polarization types of the data transmission antenna, the remote control antenna and the telemetry antenna, and the polarization modes corresponding to two adjacent antennas in the data transmission antenna, the remote control antenna and the telemetry antenna are different.

[0053] Synthetic Aperture Radar Antenna (SAR) uses its ability to radiate and receive electromagnetic waves, combined with synthetic aperture technology, to achieve long-range, high-resolution imaging of targets.

[0054] In an optional embodiment, the synthetic aperture radar antenna adopts the form of a microstrip array, and the data transmission antenna 1, the remote control antenna 2 and the telemetry antenna 3 also adopt the form of a microstrip array. Figure 3 As shown, the polarization type of the synthetic aperture radar antenna is a linear polarization antenna, and the polarization types of the data transmission antenna 1, the remote control antenna 2, and the telemetry antenna 3 are circular polarization antennas. The data transmission antenna 1 is a right-hand circularly polarized antenna, and the remote control antenna 2 and the telemetry antenna 3 are in the form of microstrip array antennas. The remote control antenna 2 is left-hand circularly polarized, and the telemetry antenna 3 is right-hand circularly polarized.

[0055] Here, left-hand circular polarization refers to the electric field vector of an electromagnetic wave rotating counterclockwise around the propagation direction during propagation, forming a circular trajectory. This polarization mode usually aligns with the direction of rotation of the left hand, so it is called left-hand circular polarization.

[0056] Right-hand circular polarization: This refers to the electric field vector of an electromagnetic wave rotating clockwise around the propagation direction during propagation, forming a circular trajectory. This polarization is usually consistent with the direction of rotation of the right hand, so it is called right-hand circular polarization.

[0057] The polarization modes of two adjacent antennas are different, and different polarization modes can reduce interference between antennas.

[0058] Specifically, this application uses HFSS software for simulation design, please refer to Figure 4 , Figure 4 The flowchart for determining the location, polarization mode and polarization type of each antenna on the second surface of the antenna substrate provided in the embodiment of the present application. Figure 4 As shown in , the arrangement positions, polarization modes, and polarization types of the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna on the second surface of the antenna substrate are determined by the following method:

[0059] S101: Construct an initial simulation test model.

[0060] The initial simulation test model includes initial positions of the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna on the second surface of the antenna substrate, an initial polarization type of each antenna, and an initial polarization mode of each antenna;

[0061] The synthetic aperture radar (SAR) antenna, data transmission antenna, remote control antenna, and telemetry antenna are arranged on the second surface of the antenna substrate, and their initial positions, polarization types (such as linear polarization and circular polarization), and polarization modes (such as left-handed / right-handed circular polarization) are set to provide a physical model and parameter benchmark for subsequent simulations, clarify the electromagnetic characteristics and spatial distribution of each antenna, and avoid interference or overlap.

[0062] S102: For each antenna, determine, based on the initial simulation test model, the operating frequency band corresponding to the antenna at the initial position, initial polarization type, and initial polarization mode;

[0063] Based on the initial model, the simulation calculates the operating frequency band of each antenna at its initial position, polarization type, and mode (e.g., X-band for SAR antennas and S-band for data transmission antennas). This ensures that each antenna operates efficiently within its respective frequency band, avoids frequency band conflicts, and provides a frequency domain reference for subsequent isolation analysis.

[0064] Satellite frequency band division: L-band is 1-2 GHz, S-band is 2-4 GHz, C-band is 4-8 GHz, X-band is 8-12 GHz, and Ka-band is 26-40 GHz.

[0065] Specific implementation plan: Currently, the SAR antennas of SAR satellites (the SAR antenna array is designed to be 4608 mm × 704 mm in size, and performs SAR broadband signal transmission and echo signal reception) operate in the X / L / C / Ka bands, while the most common frequency band for measurement, control, and data transmission is the X-band (8-12 GHz). This application designs a SAR antenna operating in the 9.6 GHz band, a remote control antenna operating at a center frequency of 7239 MHz, a telemetry antenna operating at a center frequency of 8396 MHz, and a data transmission antenna operating at a center frequency of 8212 MHz. Because they all operate in the X-band and their busy frequency bands are close, the isolation of each antenna in the integrated design needs to be considered. If the SAR antenna uses the L / C / Ka bands, the operating frequency bands of the SAR antenna and the measurement, control, and data transmission antenna will differ significantly, so the antenna isolation must be far superior to that of an X-band SAR antenna.

[0066] Therefore, this solution is designed for X-band SAR antennas, selecting the same frequency band where interference is the strongest. In this way, the synthetic aperture radar antenna, data transmission antenna, remote control antenna, and telemetry antenna are located at the initial positions on the second surface of the antenna substrate, and the initial polarization type and mode of each antenna can overcome the interference between each antenna in different frequency bands.

[0067] Specifically, see Figure 5 , Figure 5 A schematic diagram of the working curve of the data transmission antenna provided in an embodiment of the present application.

[0068] like Figure 5 As shown, the operating frequency bands of other antennas are similar to the schematic diagram of the working curve of the data transmission antenna, with only the specific values ​​of the coordinates being different. Here, taking the data transmission antenna as an example, the horizontal axis of the working curve is the operating frequency, and the vertical axis of the working curve is the working index for measuring the signal transmission efficiency of the antenna.

[0069] The operating frequency band of each antenna is determined by:

[0070] Obtaining a signal transmission working curve of each antenna under an initial position, initial polarization type, and initial polarization mode corresponding to an initial simulation test model;

[0071] In the initial simulation test model, the initial position, polarization type (such as linear polarization, circular polarization) and polarization mode (such as left-hand / right-hand circular polarization) of each antenna are set, and its operating curve is calculated using electromagnetic simulation software (such as HFSS, CST).

[0072] The curve visually displays the performance of the antenna at different frequencies, and associates the antenna position, polarization mode and frequency response, providing a data basis for subsequent frequency band interception.

[0073] For the index threshold of each antenna, a frequency interval corresponding to the index threshold is intercepted on the working curve of the antenna as the working frequency band of the antenna.

[0074] Preferably, the indicator threshold is the voltage standing wave ratio. The voltage standing wave ratio (VSWR) is a parameter that measures the matching degree between a transmission line and a load (such as an antenna), and represents the ratio of the voltage amplitude of a reflected wave to that of an incident wave.

[0075] On the working curve obtained by simulation, mark the frequency interval that meets the indicator threshold.

[0076] For example, if Figure 5The operating curve shown in the figure is below the indicator threshold of 2.00 in the 7.98 GHz to 8.98 GHz range. This range ensures that the antenna meets all performance indicators within the selected frequency band. To mitigate interference between antennas, the indicator threshold for each antenna's defined operating frequency band is unified at 2.00.

[0077] S103 , for each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determining an isolation simulation curve when the antenna and the synthetic aperture radar antenna are both in corresponding operating frequency bands and performing signal transmission.

[0078] The horizontal axis of the isolation simulation curve is the operating frequency, and the vertical axis of the isolation simulation curve is the isolation;

[0079] In satellite communication systems, the isolation between antennas is measured in decibels (dB), which intuitively reflects the degree of signal interference between antennas. The higher the isolation, the less interference between antennas and the higher the signal quality.

[0080] For data transmission, remote control, and telemetry antennas, the isolation (dB) between them and the SAR antenna in the common operating frequency band is simulated. The horizontal axis is frequency and the vertical axis is isolation. This shows the degree of signal isolation between antennas at different frequencies, identifies frequency bands with poor isolation, and guides subsequent design adjustments.

[0081] S104. For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determine, based on the isolation simulation curve corresponding to the antenna and the isolation threshold corresponding to the antenna, a verification result of the initial position, initial polarization type, and initial polarization mode corresponding to the antenna in the initial simulation test model;

[0082] Compare the isolation simulation curve of each antenna with the preset threshold (such as -50dB) to determine whether the initial position, polarization type, and mode meet the requirements, ensure that the initial design parameters meet the isolation standards, and identify antennas or parameters that need to be adjusted.

[0083] S105 . Based on the verification result, determine the location of the antenna on the second surface of the antenna substrate, the polarization type, and the polarization mode under the polarization type.

[0084] Based on the verification results, the antenna position, polarization type and method are adjusted, and the layout of the antenna on the substrate is finally determined. By optimizing the parameters, the interference between antennas is significantly reduced, the signal transmission quality is improved, the frequency band and space are reasonably allocated, and resource waste is avoided.

[0085] Specifically, the verification result is determined in the following ways:

[0086] For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, the isolation simulation curve corresponding to the synthetic aperture radar antenna is determined to determine whether the peak value of the isolation simulation curve corresponding to the antenna is lower than the isolation threshold corresponding to the antenna;

[0087] If the peak value of the isolation simulation curve of each of the data transmission antenna, the remote control antenna, and the telemetry antenna is lower than the isolation threshold corresponding to the antenna, it is determined as the first verification result;

[0088] See also Figure 6 , Figure 6 A schematic diagram of a simulation curve of the isolation between the telemetry antenna and the synthetic aperture radar antenna provided in an embodiment of the present application;

[0089] like Figure 6 As shown, Figure 6 This is the isolation simulation curve between the telemetry antenna and the synthetic aperture radar antenna. For example, the isolation threshold is determined to be -50db. Figure 6 The peak value of the red curve is lower than -50db. It can be considered that the peak value of the isolation simulation curve between the telemetry antenna and the synthetic aperture radar antenna is lower than the isolation threshold corresponding to the antenna. The isolation simulation curves between other antennas and the synthetic aperture radar antenna are Figure 6 Similar, only the curve shape and specific values ​​are different. Here, only the isolation simulation curve between the telemetry antenna and the synthetic aperture radar antenna is taken as an example.

[0090] The appearance of a red curve indicates that the telemetry antenna and the synthetic aperture radar antenna can transmit data independently without interfering with each other.

[0091] If the peak value of the isolation simulation curve of any one of the data transmission antenna, the remote control antenna, and the telemetry antenna is not lower than the isolation threshold corresponding to the antenna, it is determined as the second verification result;

[0092] Assuming that the peak value of the isolation simulation curve between the telemetry antenna and the synthetic aperture radar antenna is greater than the isolation threshold, it means that the telemetry antenna and the synthetic aperture radar antenna interfere with each other during signal transmission under the initial position, initial polarization type, and initial polarization mode of the telemetry antenna and the synthetic aperture radar antenna defined in the initial simulation test model.

[0093] If the peak values ​​of the isolation simulation curves of any two antennas among the data transmission antenna, the remote control antenna, and the telemetry antenna are not lower than the isolation threshold values ​​corresponding to the antennas, then it is determined as the third verification result;

[0094] If the peak value of the isolation simulation curve of each of the data transmission antenna, the remote control antenna and the telemetry antenna is not lower than the isolation threshold corresponding to the antenna, it is determined as the fourth verification result.

[0095] Specifically, when it is detected that the verification result is the first verification result, the initial position of each antenna on the second surface of the antenna substrate, the initial polarization type of each antenna, and the initial polarization mode of each antenna in the initial simulation test model are determined as the final setting position, polarization mode, and polarization type of each antenna for actual application;

[0096] Here, when the verification result is the first verification result, the parameters in the initial simulation test model are directly adopted: the initial position of each antenna on the second surface of the antenna substrate, the initial polarization type of each antenna, and the initial polarization mode of each antenna. The initial parameters are directly applied for actual application without further optimization.

[0097] When it is detected that the verification result is the second verification result, a first candidate antenna is determined, and a first setting position and a first polarization type of the first candidate antenna in the initial simulation test model are updated until a peak value of the isolation simulation curve of the first candidate antenna is lower than the isolation threshold, and a final setting position, polarization mode, and polarization type are determined according to the updated corresponding first setting position, initial polarization mode, and first polarization type, wherein the first candidate antenna includes one antenna, and the first candidate antenna is an antenna for which a peak value of the isolation simulation curve in the test antenna is not lower than the isolation threshold corresponding to the antenna;

[0098] Here, when the verification result is the second verification result, optimization is performed on one antenna (the first candidate antenna), an antenna whose isolation simulation curve peak is not lower than the corresponding threshold is selected, the first setting position of the first candidate antenna is adjusted, the first polarization type is updated, and the update is repeated until the isolation simulation curve peak of the first candidate antenna is lower than the isolation threshold.

[0099] The final settings are determined based on the updated position, initial polarization, and new polarization type.

[0100] The adjustment here can be to first adjust the distance between the first candidate antenna and the synthetic aperture radar antenna. If the peak value of the isolation simulation curve between the first candidate antenna and the synthetic aperture radar antenna is still not lower than the isolation threshold corresponding to the antenna after adjusting the distance, a metal isolation plate can be set between the first candidate antenna and the synthetic aperture radar antenna to block interference.

[0101] When it is detected that the verification result is the third verification result, a second candidate antenna is determined, and the second setting position and the second polarization type of the second candidate antenna in the initial simulation test model are updated until the peak value of the isolation simulation curve of the second candidate antenna is lower than the isolation threshold, and the final setting position, polarization mode and polarization type are determined according to the updated corresponding second setting position, initial polarization mode and second polarization type, the second candidate antenna including two antennas, each of the second candidate antennas being an antenna for which the peak value of the isolation simulation curve in the test antenna is not lower than the isolation threshold corresponding to the antenna;

[0102] Here, when the verification result is the third verification result, optimization is performed on the two antennas (second candidate antennas), and two antennas whose isolation simulation curve peaks are not lower than the corresponding threshold are selected. The second setting position of each antenna is adjusted, and the second polarization type of each antenna is updated. The update is repeated until the isolation simulation curve peaks of the two antennas are lower than the isolation threshold. The final setting is determined based on the updated position, initial polarization mode, and new polarization type.

[0103] The adjustment here can be to first adjust the distance between the two antennas in the second candidate antenna and the synthetic aperture radar antenna respectively. If the peak value of the isolation simulation curve between the two antennas in the second candidate antenna and the synthetic aperture radar antenna is still not lower than the isolation threshold corresponding to the antenna after adjusting the distance, the positions of the two antennas in the second candidate antenna can be swapped and the polarization mode can be readjusted. If it is still not lower than the isolation threshold corresponding to the antenna, a metal isolation plate is set between each antenna in the second candidate antenna and the synthetic aperture radar antenna to block interference.

[0104] When it is detected that the verification result is the fourth verification result, the third setting position of each antenna on the second surface of the antenna substrate and the third polarization type of each antenna in the initial simulation test model are updated until the peak value of the isolation simulation curve of each antenna is lower than the isolation threshold, and the final setting position, polarization mode and polarization type are determined according to the corresponding third setting position, initial polarization mode and third polarization type after the update.

[0105] When the verification result is the fourth verification result, optimize the three antennas, select three antennas whose isolation simulation curve peaks are not lower than the corresponding threshold, adjust the third setting position of each antenna, update the third polarization type of each antenna, and repeat the update until the isolation simulation curve peaks of the three antennas are lower than the isolation threshold.

[0106] The final settings are determined based on the updated position, initial polarization mode, and new polarization type. By adjusting the antenna position and polarization type, the peak of the isolation simulation curve is reduced to meet the isolation threshold requirement.

[0107] Here, the fourth verification result indicates that the peak value of the isolation simulation curve between each of the test antennas and the synthetic aperture radar antenna is lower than the isolation threshold.

[0108] Based on the verification results, different numbers of antennas are selected for optimization, and the parameters are gradually adjusted until the conditions are met, including antenna position, polarization type, and polarization mode. The success of the optimization is determined by comparing the peak value of the simulation curve with the isolation threshold. This method ensures the optimal performance of the antenna while meeting the isolation requirements by gradually optimizing the antenna configuration.

[0109] Specifically, the communication integrated antenna integrated board also includes a satellite main controller, wherein the satellite main controller is used to change the orientation of the second surface of the antenna substrate when receiving a data transmission request from any antenna among the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna and the telemetry antenna, so as to control the antenna among the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna and the telemetry antenna that sends the data transmission request to transmit data with the ground communication station.

[0110] Here, the satellite main controller monitors the status of each antenna in real time. Once it receives a data transmission request from any antenna, it immediately parses the request to determine the source antenna of the request and the specific transmission requirements.

[0111] Based on the analysis results, the satellite main controller combines the current satellite attitude, orbital parameters and the location information of the ground communication station to calculate the target orientation that needs to be adjusted for the second surface of the antenna substrate and generates corresponding control instructions.

[0112] The satellite main controller sends control instructions to the driving mechanism of the antenna substrate. The driving mechanism accurately adjusts the orientation of the second surface of the antenna substrate according to the instructions, so that the antenna sending the data transmission request accurately points to the ground communication station. After the antenna orientation adjustment is completed, the satellite main controller coordinates the corresponding antenna to establish a data transmission link with the ground communication station and starts the data transmission process.

[0113] In the communication integrated antenna integrated board and communication satellite of the present application, the first surface of the antenna substrate is fixed to the satellite platform, and the synthetic aperture radar antenna and the test antenna (including data transmission, remote control, and telemetry antennas) are all arranged on the second surface. Their setting position, polarization mode, and type are determined by the following steps: first, obtain the isolation simulation curve between the synthetic aperture radar antenna and each test antenna, and then based on a comprehensive analysis of all the simulation curves, finally determine the specific setting parameters of each antenna on the second surface.

[0114] This application reduces the difficulty of attitude control design, the SAR antenna and the measurement and control data transmission antenna are in the same plane, and the satellite attitude design for different missions is simpler; the weight of the entire satellite is reduced, and there is no need to design corresponding structural supports to increase the stability of the antenna, which reduces the weight introduced by the structural parts and reduces the launch cost; the risk of interference with other payloads in the entire satellite is reduced, so that there is relatively more space for stacking other payloads.

[0115] In the communication integrated antenna integrated board of the present application, the synthetic aperture radar antenna, data transmission antenna, remote control antenna and telemetry antenna are all arranged on the second surface of the antenna substrate, which reduces the design and production costs; the antenna does not require a bracket structure, which can reduce the weight of the entire satellite and reduce the launch cost; and the complexity of the satellite attitude design is reduced.

[0116] The present invention also provides a simulation test method, which includes:

[0117] Constructing an initial simulation test model, the initial simulation test model including initial positions of the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna on the second surface of the antenna substrate, an initial polarization type of each antenna, and an initial polarization mode of each antenna;

[0118] For each antenna, determine the operating frequency band corresponding to the antenna at the initial position, initial polarization type, and initial polarization mode based on the simulation test model;

[0119] For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determining an isolation simulation curve when the antenna and the synthetic aperture radar antenna are both in the corresponding operating frequency band and performing signal transmission, wherein the abscissa of the isolation simulation curve is the operating frequency, and the ordinate of the isolation simulation curve is the isolation;

[0120] For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determining a verification result of the initial position, initial polarization type, and initial polarization mode corresponding to the antenna in the initial simulation test model according to the isolation simulation curve corresponding to the antenna and the isolation threshold corresponding to the antenna;

[0121] Based on the verification result, the setting position of the antenna on the second surface of the antenna substrate, the polarization type, and the polarization mode under the polarization type are determined.

[0122] An embodiment of the present application further provides a communication satellite, comprising:

[0123] Satellite platforms;

[0124] The satellite main controller is arranged inside the communication satellite body;

[0125] As described above, the communication integrated antenna integrated board, the communication pin of each antenna in the communication integrated antenna integrated board is connected to the satellite main controller to form information interaction.

[0126] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0127] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. There may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interface, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

[0128] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0129] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0130] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program code, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0131] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-mentioned embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A communication integrated antenna integrated board, characterized in that: include: an antenna substrate, wherein the first surface of the antenna substrate is used to be fixed to a satellite platform, a synthetic aperture radar antenna, disposed on the second surface of the antenna substrate, A test antenna is provided on the second surface of the antenna substrate, and the test antenna includes a data transmission antenna, a remote control antenna and a telemetry antenna. The arrangement position, polarization mode, and polarization type of each antenna on the second surface of the antenna substrate are determined by: Constructing an initial simulation test model, the initial simulation test model including initial positions of the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna on the second surface of the antenna substrate, an initial polarization type of each antenna, and an initial polarization mode of each antenna; determining, based on the initial simulation test model, an isolation simulation curve between the synthetic aperture radar antenna and each of the test antennas; Verification results of the initial position, initial polarization type, and initial polarization mode corresponding to each antenna in the initial simulation test model are determined for the isolation simulation curve corresponding to each antenna in the data transmission antenna, the remote control antenna, and the telemetry antenna, and the isolation threshold corresponding to the antenna. Based on the verification results, the positions and polarization types of antennas that do not meet the isolation threshold are updated until the isolation simulation curve between the antenna and the synthetic aperture radar antenna meets the isolation threshold requirement. The setting position of the antenna on the second surface of the antenna substrate, the polarization type, and the polarization mode under the polarization type are determined.

2. The communication integrated antenna integrated board according to claim 1, characterized in that: The synthetic aperture radar antenna, data transmission antenna, remote control antenna and telemetry antenna are all arranged on the second surface of the antenna substrate in the form of microstrip array antennas. The second surface of the antenna substrate includes a first area and a second area arranged adjacent to each other. The first area is arranged at a first side edge of the antenna substrate, and the second area is arranged at a second side edge of the antenna substrate. The first side edge and the second side edge are arranged opposite to each other. The synthetic aperture radar antenna is arranged in the first area, and the data transmission antenna, remote control antenna and telemetry antenna are arranged in the second area. The data transmission antenna, remote control antenna and telemetry antenna are arranged in a one-dimensional linear arrangement, parallel to the second side edge, and adjacent to each other in the second area.

3. The communication integrated antenna integrated board according to claim 2, characterized in that: The polarization type of the synthetic aperture radar antenna is different from the polarization types of the data transmission antenna, the remote control antenna, and the telemetry antenna, and the polarization modes corresponding to two adjacent antennas among the data transmission antenna, the remote control antenna, and the telemetry antenna are different.

4. The communication integrated antenna integrated board according to claim 3, characterized in that: The isolation simulation curves between the synthetic aperture radar antenna and each of the test antennas are determined by: For each antenna, determining an operating frequency band corresponding to the antenna at an initial position, initial polarization type, and initial polarization mode based on the initial simulation test model; For each of the data transmission antenna, remote control antenna, and telemetry antenna, an isolation simulation curve is determined when the antenna and the synthetic aperture radar antenna are both in the corresponding operating frequency band for signal transmission. The abscissa of the isolation simulation curve is the operating frequency, and the ordinate of the isolation simulation curve is the isolation.

5. The communication integrated antenna integrated board according to claim 4, characterized in that: The verification result is determined by: For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, the isolation simulation curve corresponding to the synthetic aperture radar antenna is determined to determine whether the peak value of the isolation simulation curve corresponding to the antenna is lower than the isolation threshold corresponding to the antenna; If the peak value of the isolation simulation curve of each of the data transmission antenna, the remote control antenna, and the telemetry antenna is lower than the isolation threshold corresponding to the antenna, it is determined as the first verification result; If the peak value of the isolation simulation curve of any one of the data transmission antenna, the remote control antenna, and the telemetry antenna is not lower than the isolation threshold corresponding to the antenna, it is determined as the second verification result; If the peak values ​​of the isolation simulation curves of any two antennas among the data transmission antenna, the remote control antenna, and the telemetry antenna are not lower than the isolation threshold values ​​corresponding to the antennas, then it is determined as the third verification result; If the peak value of the isolation simulation curve of each of the data transmission antenna, the remote control antenna and the telemetry antenna is not lower than the isolation threshold corresponding to the antenna, it is determined as the fourth verification result.

6. The communication integrated antenna integrated board according to claim 5, characterized in that: The step of determining, based on the verification result, a setting position of the antenna on the second surface of the antenna substrate, a polarization type, and a polarization mode under the polarization type, comprising: When it is detected that the verification result is the first verification result, the initial position of each antenna on the second surface of the antenna substrate, the initial polarization type of each antenna, and the initial polarization mode of each antenna in the initial simulation test model are determined as the final setting position, polarization mode, and polarization type of each antenna for practical application; When it is detected that the verification result is the second verification result, determining a first candidate antenna, updating a first setting position and a first polarization type of the first candidate antenna in the initial simulation test model until a peak value of an isolation simulation curve of the first candidate antenna is lower than an isolation threshold, and determining a final setting position, polarization mode, and polarization type according to the updated corresponding first setting position, initial polarization mode, and first polarization type, wherein the first candidate antenna includes one antenna, and the first candidate antenna is an antenna for which a peak value of the isolation simulation curve in the test antenna is not lower than the isolation threshold corresponding to the antenna; When it is detected that the verification result is the third verification result, a second candidate antenna is determined, and a second setting position and a second polarization type of the second candidate antenna in the initial simulation test model are updated until a peak value of the isolation simulation curve of the second candidate antenna is lower than the isolation threshold, and a final setting position, polarization mode, and polarization type are determined according to the updated corresponding second setting position, initial polarization mode, and second polarization type, wherein the second candidate antenna includes two antennas, and each of the second candidate antennas is an antenna for which a peak value of the isolation simulation curve in the test antenna is not lower than the isolation threshold corresponding to the antenna; When it is detected that the verification result is the fourth verification result, the third setting position of each antenna on the second surface of the antenna substrate and the third polarization type of each antenna in the initial simulation test model are updated until the peak value of the isolation simulation curve of each antenna is lower than the isolation threshold, and the final setting position, polarization mode and polarization type are determined according to the corresponding third setting position, initial polarization mode and third polarization type after the update.

7. The communication integrated antenna integrated board according to claim 4, characterized in that: The operating frequency band of each antenna is determined by: Obtaining a working curve for signal transmission of each antenna under the initial position, initial polarization type, and initial polarization mode corresponding to the initial simulation test model, where the abscissa of the working curve is the operating frequency, and the ordinate of the working curve is a working index for measuring the signal transmission efficiency of the antenna; For the index threshold of each antenna, a frequency interval corresponding to the index threshold is intercepted on the working curve of the antenna as the working frequency band of the antenna.

8. The communication integrated antenna integrated board according to claim 1, characterized in that: The communication integrated antenna integrated board also includes a satellite main controller, The satellite main controller is used to change the orientation of the second surface of the antenna substrate when receiving a data transmission request from any one of the synthetic aperture radar antenna, data transmission antenna, remote control antenna and telemetry antenna, so as to control the antenna that sends the data transmission request among the synthetic aperture radar antenna, data transmission antenna, remote control antenna and telemetry antenna to transmit data with the ground communication station.

9. A simulation test method, characterized in that: The method comprises: Constructing an initial simulation test model, the initial simulation test model including initial positions of the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna on the second surface of the antenna substrate, an initial polarization type of each antenna, and an initial polarization mode of each antenna; For each antenna, determine the operating frequency band corresponding to the antenna at the initial position, initial polarization type, and initial polarization mode based on the simulation test model; For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determining an isolation simulation curve when the antenna and the synthetic aperture radar antenna are both in the corresponding operating frequency band and performing signal transmission, wherein the abscissa of the isolation simulation curve is the operating frequency, and the ordinate of the isolation simulation curve is the isolation; For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determining a verification result of the initial position, initial polarization type, and initial polarization mode corresponding to the antenna in the initial simulation test model according to the isolation simulation curve corresponding to the antenna and the isolation threshold corresponding to the antenna; Based on the verification result, the position and polarization type of the antenna that does not meet the isolation threshold in the antenna are updated until the isolation simulation curve between the antenna and the synthetic aperture radar antenna meets the isolation threshold requirement, and the setting position, polarization type, and polarization mode of the antenna under the polarization type on the second surface of the antenna substrate are determined.

10. A communication satellite, characterized in that: include: Satellite platforms; The satellite main controller is arranged inside the communication satellite body; The communication integrated antenna integrated board as described in any one of claims 1 to 8, wherein the communication pin of each antenna in the communication integrated antenna integrated board is connected to the satellite main controller to form information interaction.

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