Communication integrated antenna integrated board and communication satellite

Abstract

The invention provides a communication integrated antenna integrated plate and a communication satellite, and relates to the technical field of communication antennae, and the communication integrated antenna integrated plate comprises an antenna substrate, a synthetic aperture radar antenna disposed on a second surface of the antenna substrate, and a test antenna disposed on the second surface of the antenna substrate, determining a setting position, a polarization mode and a polarization type of each antenna on the second surface of the antenna substrate through the following modes: determining an isolation simulation curve between the synthetic aperture radar antenna and any one of the test antennas, wherein the test antennas comprise a data transmission antenna, a remote control antenna and a telemetering antenna; and according to all the isolation simulation curves, determining setting positions, polarization modes and polarization types of a synthetic aperture radar antenna, a data transmission antenna, a remote control antenna and a telemetering antenna on the second surface of the antenna substrate. According to the invention, the antenna is integrated on the antenna substrate, the weight of the whole satellite is reduced, and the launching cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of communication antennas. Specifically, it relates to a communication integrated antenna integrated board and a communication satellite. Background Art

[0002] Currently, in current satellite platforms, synthetic aperture radar antennas (SAR antennas, Synthetic Aperture Radar), measurement and control antennas, and data transmission antennas are usually arranged as independent entities at the ground-facing end. For example, Figure 1 as shown. Figure 1 In [reference], because the SAR antenna 5 is relatively large in size (up to several meters), it often exceeds the loading surface of the satellite platform 4. It is necessary to externally place the telemetry antenna 2, the remote control antenna 3, and the data transmission antenna 1 through an extended bracket to avoid being blocked by the SAR antenna. Although this solution can solve the physical interference problem between antennas, there are the following significant technical defects in practical applications: 1) Risk of structural instability: For the measurement and control antenna, due to its relatively light weight, the structural stability of the bracket is acceptable. However, if the data transmission antenna adopts active phased array technology (large weight and large size), the requirement for the strength of the bracket is significantly increased, and there is a risk of structural failure.

[0003] 2) Increase in weight and cost: The introduction of the extended bracket directly increases the weight of the entire satellite, resulting in an increase in launch cost (the launch cost is positively correlated with the satellite mass).

[0004] 3) Risks in transportation and general assembly: The extended bracket is easily bumped during transportation, general assembly, and environmental tests, resulting in damage to the measurement and control / data transmission antennas.

[0005] 4) Complexity of attitude control design: For the conventional layout, it is necessary to adjust the satellite attitude for different tasks (such as SAR scanning and data transmission communication), resulting in the attitude control system needing to frequently switch working modes, increasing the design complexity and energy consumption. Summary of the Invention

[0006] In view of this, the purpose of this application is to provide a communication integrated antenna integrated board and a communication satellite to overcome at least one of the above defects.

[0007] In a first aspect, an embodiment of the present application provides a communication integrated antenna integrated board, and the method includes: an antenna substrate, a first surface of the antenna substrate is used to be fixed to a satellite platform, a synthetic aperture radar antenna is disposed on a second surface of the antenna substrate, and a test antenna is disposed 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 an isolation simulation curve between any one of the synthetic aperture radar antenna and the test antenna, and the test antenna includes a data transmission antenna, a remote control antenna, and a telemetry antenna; 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 the isolation simulation curves. In an alternative embodiment of the present application, the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna are all arranged in the form of microstrip array antennas on the second surface of the antenna substrate. The second surface of the antenna substrate includes an adjacent first area and a second area. The first area is disposed at a first side position of the antenna substrate, and the second area is disposed at a second side position of the antenna substrate. The first side and the second side are oppositely arranged. The synthetic aperture radar antenna is disposed in the first area, and the data transmission antenna, the remote control antenna, and the telemetry antenna are disposed 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 are adjacent to each other in the second area.

[0008] In an alternative 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 polarization modes corresponding to two adjacent antennas in the data transmission antenna, the remote control antenna, and the telemetry antenna are different.

[0009] In an alternative embodiment of the present application, the installation positions, polarization modes, and polarization types of the synthetic aperture radar antenna, data transmission antenna, remote control antenna, and telemetry antenna on the second surface of the antenna substrate are determined in the following manner: An initial simulation test model is constructed, which includes the initial positions of the synthetic aperture radar antenna, data transmission antenna, remote control antenna, and 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, based on the initial simulation test model, the corresponding operating frequency band of the antenna at the initial position, initial polarization type, and initial polarization mode is determined; for each of the data transmission antenna, remote control antenna, and telemetry antenna, an isolation simulation curve is determined when the signal transmission is performed with the synthetic aperture radar antenna at their corresponding operating frequency bands. 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, remote control antenna, and telemetry antenna, according to the isolation simulation curve corresponding to the antenna and the isolation threshold corresponding to the antenna, the verification result of the initial position, initial polarization type, and initial polarization mode of the antenna in the initial simulation test model is determined; for the verification result, the installation position, polarization type, and polarization mode of the antenna on the second surface of the antenna substrate are determined.

[0010] In an alternative embodiment of the present application, the verification result is determined in the following manner: For the isolation simulation curve corresponding to each of the data transmission antenna, remote control antenna, and telemetry antenna and the synthetic aperture radar antenna, it is judged 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 values of the isolation simulation curves of each of the data transmission antenna, remote control antenna, and telemetry antenna are all 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, remote control antenna, and 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 of the data transmission antenna, remote control antenna, and telemetry antenna are not lower than the isolation threshold corresponding to the antenna, it is determined as the third verification result; if the peak values of the isolation simulation curves of each of the data transmission antenna, remote control antenna, and telemetry antenna are not lower than the isolation threshold corresponding to the antenna, it is determined as the fourth verification result.

[0011] In an alternative embodiment of the present application, determining the installation position, polarization type, and polarization method under the polarization type of the antenna on the second surface of the antenna substrate for the verification result includes: when it is detected that the verification result is the first verification result, determining 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 method of each antenna in the initial simulation test model as the final installation position, polarization method, and polarization type of each antenna for actual application; when it is detected that the verification result is the second verification result, determining a first candidate antenna, and updating the first installation position and the first polarization type of the first candidate antenna in the initial simulation test model until the peak value of the isolation simulation curve of the first candidate antenna is lower than the isolation threshold, and determining the final installation position, polarization method, and polarization type according to the updated corresponding first installation position, initial polarization method, and first polarization type. The first candidate antenna includes one antenna, and the first candidate antenna is an antenna in the test antennas whose peak value of the isolation simulation curve is not lower than the isolation threshold corresponding to the antenna; when it is detected that the verification result is the third verification result, determining a second candidate antenna, and updating the second installation position and the second polarization type of the second candidate antenna in the initial simulation test model until the peak value of the isolation simulation curve of the second candidate antenna is lower than the isolation threshold, and determining the final installation position, polarization method, and polarization type according to the updated corresponding second installation position, initial polarization method, and second polarization type. The second candidate antenna includes two antennas, and each antenna in the second candidate antenna is an antenna in the test antennas whose peak value of the isolation simulation curve is not lower than the isolation threshold corresponding to the antenna; when it is detected that the verification result is the fourth verification result, updating the third installation 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 until the peak value of the isolation simulation curve of each antenna is lower than the isolation threshold, and determining the final installation position, polarization method, and polarization type according to the updated corresponding third installation position, initial polarization method, and third polarization type.

[0012] In an alternative embodiment of the present application, the operating frequency band of each antenna is determined by the following method: obtaining the operating curve of each antenna for signal transmission at the initial position, initial polarization type, and initial polarization method corresponding to the initial simulation test model, where the abscissa of the operating curve is the operating frequency, and the ordinate of the operating curve is the operating index for measuring the signal transmission efficiency of the antenna; for the index threshold of each antenna, intercepting the frequency interval corresponding to the index threshold on the operating curve of the antenna as the operating frequency band of the antenna.

[0013] In an alternative embodiment of the present application, the communication integrated antenna integrated board further includes a satellite main controller, wherein the satellite main controller is configured 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, the data transmission antenna, the remote control antenna, and the telemetry antenna, so as to control the antenna that sends the data transmission request among the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna to perform data transmission with a ground communication station.

[0014] In a second aspect, an embodiment of the present application further provides a simulation test method, the method includes: constructing an initial simulation test model, the initial simulation test model includes the initial positions of the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna located 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, determining the corresponding operating frequency band of the antenna at the initial position, the initial polarization type, and the 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 degree simulation curve 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 degree simulation curve is the operating frequency, and the ordinate of the isolation degree simulation curve is the isolation degree; for each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determining the verification result of the initial position, the initial polarization type, and the initial polarization mode corresponding to the antenna in the initial simulation test model according to the isolation degree simulation curve corresponding to the antenna and the isolation degree threshold corresponding to the antenna; for the verification result, determining the installation position, the polarization type, and the polarization mode under the polarization type of the antenna located on the second surface of the antenna substrate. In a third aspect, an embodiment of the present application further provides a communication satellite, including: a satellite platform; a satellite main controller disposed inside the communication satellite body; the communication integrated antenna integrated board as described in any one of the above, and a communication pin of each antenna in the communication integrated antenna integrated board is connected to the satellite main controller to form information interaction.

[0015] The communication integrated antenna integrated board and the communication satellite provided by the embodiments of the present application co-locate 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. By simulating and analyzing the isolation degree 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 coordination, realizing the lightweight, low cost, and high performance of the satellite system.

[0016] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related accompanying drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of a satellite platform and each antenna in the prior art provided by the embodiments of the present application; Figure 2 Schematic diagram of a satellite platform and an integrated communication antenna board provided by the embodiments of the present application; Figure 3 Schematic diagram of an antenna substrate provided by the embodiments of the present application; Figure 4 Flowchart for determining the installation position, polarization mode, and polarization type of each antenna on the second surface of the antenna substrate provided by the embodiments of the present application; Figure 5 Schematic diagram of the working curve of a data transmission antenna provided by the embodiments of the present application; Figure 6 Schematic diagram of the isolation simulation curve between a telemetry antenna and a synthetic aperture radar antenna provided by the embodiments of the present application. Detailed implementation manners

[0019] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying 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 accompanying drawings is not intended to limit the scope of the present application to be protected, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, every other embodiment obtained by those of ordinary skill in the art without creative efforts falls within the scope of protection of the present application.

[0020] First, the applicable application scenarios of the present application will be introduced. The present application can be applied to the technical field of communication antennas.

[0021] The Synthetic Aperture Radar (SAR) antenna obtains a two-dimensional image of the target by coherently processing the broadband echo signals received by the radar at different spatial positions during a certain accumulation time through the relative motion between the radar loading platform and the observed target, thus truly seeing the real image of the target.

[0022] Spaceborne telemetry antennas, remote control antennas, and data transmission antennas are the bridges for communication between the satellite and the ground. Briefly speaking, the spaceborne remote control antenna receives remote control commands from the ground measurement and control station and then performs corresponding service operations; the spaceborne telemetry antenna sends the status information of the satellite to the ground station, enabling the ground to understand all the states of the satellite platform; the spaceborne data transmission antenna transmits the historical telemetry data of the satellite platform and the data generated by the payloads to the ground. Compared with the telemetry antenna, the data transmission rate of the data transmission antenna is much higher than that of the telemetry antenna, which is suitable for the downlink of a large amount of data.

[0023] It has been found through research that in the prior art, due to the occlusion of the SAR antenna, it is inevitable to extend the structural support for the measurement and control data transmission antenna, which has the following disadvantages: First, for the conventional layout scheme, for the fabricated extension bracket, there is a certain risk in the structural stability of the bracket. The structural strength of the relatively light-weight measurement and control passive antenna is relatively stable. However, if the data transmission antenna is an active phased array antenna, its weight and size are relatively large, and higher requirements are imposed on the structural strength of the extension bracket.

[0024] Second, the design of the extension bracket will increase the weight of the entire satellite and increase the cost during launch.

[0025] Third, after the satellite is fully assembled, environmental tests will be carried out. The extended bracket has a risk of being knocked during transportation, which may damage the measurement and control data transmission antenna.

[0026] Fourth, for the conventional layout scheme, when different tasks are performed on the satellite platform, different attitude controls need to be performed on the platform, increasing the complexity of the attitude control design.

[0027] Based on this, the embodiments of the present application provide a communication integrated antenna integrated board and a communication satellite. By integrating the synthetic aperture radar antenna and the data transmission / remote control / telemetry test antenna on the second surface of the antenna substrate, and optimizing the layout and polarization configuration of each antenna using the isolation simulation curve, the integrated design of the antenna and the satellite body is realized, achieving comprehensive benefits such as weight reduction, cost reduction, avoiding structural interference, and simplifying attitude control.

[0028] Please refer to Figure 2 , Figure 2 which is a schematic diagram of the satellite platform and the communication integrated antenna integrated board provided by the embodiments of the present application. As Figure 2As shown in the figure, the communication integrated antenna one-piece board provided by the embodiments 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.

[0029] Among them, 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.

[0030] Here, through the integrated design, multiple antennas are integrated on a single substrate, significantly reducing the physical space occupied by the satellite platform, reducing the system complexity, and at the same time reducing the satellite weight, 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 the design requirements.

[0031] Among them, the installation position, polarization mode, and polarization type of each antenna on the second surface of the antenna substrate are determined by the following methods: Determine the isolation simulation curve between any one of the synthetic aperture radar antenna and the test antenna.

[0032] The test antenna includes a data transmission antenna 1, a remote control antenna 2, and a telemetry antenna 3.

[0033] According to all the isolation simulation curves, determine the installation position, polarization mode, and polarization type 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.

[0034] Through the analysis of the isolation simulation curve, optimize the layout and polarization configuration of each antenna, effectively reduce the electromagnetic interference between antennas, ensure that the synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna can still maintain high performance and stability in a complex electromagnetic environment, improve the communication quality and data transmission efficiency. At the same time, through the simulation technology, pre-evaluate the rationality of the antenna layout, reduce the number of physical tests and iterations, significantly shorten the R & D cycle, and reduce the development cost.

[0035] Specifically, please refer to Figure 3 , Figure 3 is a schematic diagram of the antenna substrate provided by the embodiments of the present application. As shown in Figure 3 the figure, the antenna substrate provided by the embodiments 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.

[0036] The synthetic aperture radar antenna 4, data transmission antenna 1, remote control antenna 5, and telemetry antenna 3 are all arranged in the form of microstrip array antennas on the second surface of the antenna substrate 6. The second surface of the antenna substrate 6 includes an adjacent first area and second area. 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 oppositely arranged. The synthetic aperture radar antenna 4 is arranged in the first area, and the data transmission antenna 1, remote control antenna 2, and telemetry antenna 3 are arranged in the second area. The data transmission antenna 1, remote control antenna 2, and 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.

[0037] Here, the synthetic aperture radar antenna 4, data transmission antenna 1, remote control antenna 2, and telemetry antenna 3 all adopt the form of microstrip array antennas. Microstrip array antennas have the advantages of small volume, light weight, and easy integration, and are very suitable for platforms with strict weight and space restrictions such as satellites. All antennas are arranged on the second surface of the antenna substrate 6. This design is beneficial to the integration of the antennas with the satellite platform 5, reducing the connection structure and signal transmission loss between the antennas and the satellite platform.

[0038] A microstrip array, that is, a microstrip antenna array (microstrip antenna array), refers to an antenna system composed of multiple microstrip antenna elements arranged and combined according to certain rules.

[0039] The second surface of the antenna substrate is divided into an adjacent first area and second area. This area division method provides independent layout spaces for antennas with different functions, facilitating reasonable layout design according to the characteristics and working requirements of the antennas. The first area is arranged at the first side position of the antenna substrate, and the second area is arranged at the second side position of the antenna substrate, and the first side and the second side are oppositely arranged. This relatively arranged area layout method helps to optimize the radiation direction and electromagnetic compatibility of the antennas.

[0040] The synthetic aperture radar antenna is arranged in the first area. Since the synthetic aperture radar antenna usually requires a large radiation area and a specific radiation direction, arranging it in the first area can make full use of the space in this area to meet its working requirements.

[0041] The data transmission antenna, remote control antenna, and telemetry antenna are arranged in the second area, and are arranged in a one-dimensional linear arrangement, parallel to the second side, and adjacent to each other. This layout method can reduce the mutual interference between the antennas, improve the performance and reliability of the antennas. At the same time, the one-dimensional linear arrangement and the design parallel to the second side are also beneficial to the control of the radiation direction of the antennas and signal transmission.

[0042] Preferably, the polarization type of the synthetic aperture radar antenna is different from that 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.

[0043] The synthetic aperture radar antenna (SAR, Synthetic Aperture Radar Antenna) realizes long-distance high-resolution imaging of the target by its ability to radiate and receive electromagnetic waves and combines with synthetic aperture technology.

[0044] 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. As Figure 3 shown, the polarization type of the synthetic aperture radar antenna is a linearly polarized antenna, and the polarization types of the data transmission antenna 1, the remote control antenna 2, and the telemetry antenna 3 are circularly polarized antennas. The data transmission antenna 1 is a right-handed circularly polarized antenna. The remote control antenna 2 and the telemetry antenna 3 adopt the form of microstrip array antennas. The remote control antenna 2 is left-handed circularly polarized, and the telemetry antenna 3 is right-handed circularly polarized.

[0045] Here, left-handed circular polarization: It means that the electric field vector of the electromagnetic wave rotates counterclockwise around the propagation direction during propagation, forming a circular trajectory. This polarization mode is usually consistent with the rotation direction of the left hand, so it is called left-handed circular polarization.

[0046] Right-handed circular polarization: It means that the electric field vector of the electromagnetic wave rotates clockwise around the propagation direction during propagation, forming a circular trajectory. This polarization mode is usually consistent with the rotation direction of the right hand, so it is called right-handed circular polarization.

[0047] The polarization modes of adjacent two antennas are different, and different polarization modes overcome the interference between the antennas.

[0048] Specifically, the HFSS software is used in this application for simulation design. Please refer to Figure 4 , Figure 4 which is the flowchart for determining the installation positions, polarization modes, and polarization types of each antenna on the second surface of the antenna substrate provided by the embodiment of this application. As Figure 4 shown, the installation 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 in the following manner: S101. Construct an initial simulation test model.

[0049] The initial simulation test model includes the 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, the initial polarization type of each antenna, and the initial polarization mode of each antenna; 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. Their initial positions, polarization types (such as linear polarization, circular polarization), and polarization modes (such as left - hand / right - hand circular polarization) are set to provide a physical model and parameter reference for subsequent simulations, clarify the electromagnetic characteristics and spatial distribution of each antenna, and avoid interference or overlap.

[0050] S102. For each antenna, based on the initial simulation test model, determine the operating frequency band corresponding to the antenna at the initial position, initial polarization type, and initial polarization mode. Based on the initial model, simulate and calculate the operating frequency bands of each antenna at the initial position, polarization type, and mode (e.g., SAR antenna: X - band, data transmission antenna: S - band), ensure that each antenna operates efficiently within its respective frequency band, avoid frequency band conflicts, and provide a frequency - domain reference for subsequent isolation analysis.

[0051] Satellite frequency band division: The L - band is 1 - 2 GHz, the S - band is 2 - 4 GHz, the C - band is 4 - 8 GHz, the X - band is 8 - 12 GHz, and the Ka - band is 26 - 40 GHz.

[0052] Specific implementation scheme: Currently, the operating frequency bands of the SAR antenna of the SAR satellite (the designed size of the SAR antenna array is 4608 mm × 704 mm, which completes the transmission of SAR broadband signals and the reception of echo signals) include the X / L / C / Ka bands, and the frequency band of the TT&C data transmission is generally the X - band (8 - 12 GHz). In this application, the operating frequency band of the SAR antenna is 9.6 GHz, the center operating frequency of the remote control antenna is 7239 MHz, the center operating frequency of the telemetry antenna is 8396 MHz, and the center operating frequency of the data transmission antenna is 8212 MHz. Since they all operate in the X - band and the operating frequency bands are close, it is necessary to consider the isolation of each antenna in the integrated design scheme. If the SAR antenna uses the L / C / Ka bands, then the operating frequency bands of the SAR antenna and the TT&C data transmission antenna are quite different, and the isolation of the antenna is much better than that of the X - band SAR antenna.

[0053] Therefore, this scheme designs for the X - band SAR antenna and selects the same frequency band with the strongest interference for design. In this way, the initial positions of the synthetic aperture radar antenna, data transmission antenna, remote control antenna, and telemetry antenna located on the second surface of the antenna substrate, the initial polarization type of each antenna, and the initial polarization mode of each antenna can overcome the interference between each antenna in different frequency bands.

[0054] Specifically, please refer to Figure 5 , Figure 5 which is a schematic diagram of the operating curve of the data transmission antenna provided by the embodiment of this application.

[0055] As Figure 5 shown, the working frequency bands of other antennas are similar to the schematic diagram of the working curve of the data transmission antenna, only the specific numerical values of the coordinates are different. Taking the data transmission antenna as an example, the abscissa of the working curve is the working frequency, and the ordinate of the working curve is the working index that measures the signal transmission efficiency of the antenna.

[0056] The working frequency band of each antenna is determined in the following way: Obtain the working curve of signal transmission for each antenna at the initial position, initial polarization type, and initial polarization method corresponding to the initial simulation test model; In the initial simulation test model, set the initial position, polarization type (such as linear polarization, circular polarization), and polarization method (such as left-handed / right-handed circular polarization) of each antenna, and calculate its working curve through electromagnetic simulation software (such as HFSS, CST).

[0057] Intuitively display the performance of the antenna at different frequencies through the curve, associate the antenna position, polarization method with the frequency response, and provide a data basis for subsequent frequency band truncation.

[0058] For the index threshold of each antenna, intercept the frequency interval corresponding to the index threshold on the working curve of the antenna as the working frequency band of the antenna.

[0059] Preferably, the index threshold is the voltage standing wave ratio. The voltage standing wave ratio (VSWR, Voltage Standing Wave Ratio) is a parameter that measures the matching degree between the transmission line and the load (such as an antenna), and represents the ratio of the voltage amplitude of the reflected wave to the incident wave.

[0060] Mark the frequency interval that meets the index threshold on the working curve obtained by simulation.

[0061] Exemplarily, if as Figure 5 shown, the working curve is below the index threshold of 2.00 in the range of 7.98 GHz to 8.98 GHz, then this interval is 7.98 GHz to 8.98 GHz, ensuring that the antenna meets all performance indicators within the selected frequency band. In order to overcome the interference between each antenna, the index threshold corresponding to the working frequency band of each antenna is unified and can all be 2.00.

[0062] S103. For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determine the isolation simulation curve when the antenna and the synthetic aperture radar antenna are both transmitting signals in the corresponding working frequency bands.

[0063] The abscissa of the isolation simulation curve is the working frequency, and the ordinate of the isolation simulation curve is the isolation; In a satellite communication system, the isolation between antennas is expressed in decibels (dB), which can intuitively reflect the degree of signal interference between antennas. The higher the isolation, the smaller the mutual influence between antennas and the higher the signal quality.

[0064] For data transmission, remote control, and telemetry antennas, simulate the isolation (dB) between them and the SAR antenna in the common working frequency band. The abscissa is the frequency and the ordinate is the isolation, showing the signal isolation degree between antennas at different frequencies, identifying the frequency bands with poor isolation, and guiding subsequent design adjustments.

[0065] S104. For each of the data transmission antenna, remote control antenna, and telemetry antenna, determine the verification results of the initial position, initial polarization type, and initial polarization mode corresponding to this antenna in the initial simulation test model according to the isolation simulation curve corresponding to this antenna and the isolation threshold corresponding to this antenna; Compare the isolation simulation curve of each antenna with a preset threshold (such as -50 dB) to determine whether the initial position, polarization type, and mode meet the requirements, ensure that the initial design parameters meet the isolation standard, and identify the antennas or parameters that need to be adjusted.

[0066] S105. For the verification results, determine the installation position, polarization type, and polarization mode under the polarization type of this antenna on the second surface of the antenna substrate.

[0067] According to the verification results, adjust the antenna position, polarization type, and mode, finally determine the layout of the antennas on the substrate, and by optimizing the parameters, significantly reduce the interference between antennas, improve the signal transmission quality, reasonably allocate the frequency bands and space, and avoid resource waste.

[0068] Specifically, the verification results are determined by the following method: For the isolation simulation curve corresponding to each of the data transmission antenna, remote control antenna, and telemetry antenna and the synthetic aperture radar antenna, determine whether the peak value of the isolation simulation curve corresponding to this antenna is lower than the isolation threshold corresponding to this antenna; If the peak values of the isolation simulation curves of each of the data transmission antenna, remote control antenna, and telemetry antenna are all lower than the isolation threshold corresponding to this antenna, then determine it as the first verification result; Please refer to Figure 6 , Figure 6 which is a schematic diagram of the isolation simulation curve between the telemetry antenna and the synthetic aperture radar antenna provided by the embodiment of the present application; As Figure 6 shown, Figure 6 is the isolation simulation curve between the telemetry antenna and the synthetic aperture radar antenna. For example, the isolation threshold is determined to be -50 dB. Figure 6The peak value belonging to the red curve is lower than -50 dB. 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, except for the curve shape and specific values. Here, only the isolation simulation curve between the telemetry antenna and the synthetic aperture radar antenna is taken as an example.

[0069] The appearance of the red curve indicates that data transmission can be carried out independently between the telemetry antenna and the synthetic aperture radar antenna without interference with each other.

[0070] 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; Assume 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. This means that when signal transmission work is carried out between the telemetry antenna and the synthetic aperture radar antenna under the initial position, the initial polarization type, and the initial polarization method defined in the initial simulation test model, they interfere with each other.

[0071] If the peak values of the isolation simulation curves of any two of the data transmission antenna, the remote control antenna, and the telemetry antenna are not lower than the isolation thresholds corresponding to the antennas, it is determined as the third verification result; If the peak values of the isolation simulation curves of each of the data transmission antenna, the remote control antenna, and the telemetry antenna are not lower than the isolation thresholds corresponding to the antennas, it is determined as the fourth verification result.

[0072] Specifically, when the verification result is the first verification result, the initial positions of each antenna on the second surface of the antenna substrate, the initial polarization type of each antenna, and the initial polarization method of each antenna in the initial simulation test model are determined as the final set positions, polarization methods, and polarization types of each antenna for practical applications; Here, when the verification result is the first verification result, the parameters in the initial simulation test model are directly adopted: the initial positions of each antenna on the second surface of the antenna substrate, the initial polarization type of each antenna, and the initial polarization method of each antenna. The initial parameters are directly applied for practical applications without further optimization.

[0073] When the verification result is detected as the second verification result, determine the first candidate antenna, update the first set position and the first polarization type of the first candidate antenna in the initial simulation test model until the peak value of the isolation simulation curve of the first candidate antenna is lower than the isolation threshold, and determine the final set position, polarization method and polarization type according to the updated corresponding first set position, initial polarization method and first polarization type. The first candidate antenna includes one antenna, and the first candidate antenna is the antenna among the test antennas whose peak value of the isolation simulation curve is not lower than the isolation threshold corresponding to the antenna; Here, when the verification result is the second verification result, optimize for one antenna (the first candidate antenna), select the antenna whose peak value of the isolation simulation curve is not lower than the corresponding threshold, adjust the first set position of the first candidate antenna, update the first polarization type, and repeat the update until the peak value of the isolation simulation curve of the first candidate antenna is lower than the isolation threshold.

[0074] Determine the final setting according to the updated position, initial polarization method and new polarization type.

[0075] The adjustment here can 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.

[0076] When the verification result is detected as the third verification result, determine the second candidate antenna, update the second set position and the second polarization type of the second candidate antenna in the initial simulation test model until the peak value of the isolation simulation curve of the second candidate antenna is lower than the isolation threshold, and determine the final set position, polarization method and polarization type according to the updated corresponding second set position, initial polarization method and second polarization type. The second candidate antenna includes two antennas, and each antenna in the second candidate antenna is the antenna among the test antennas whose peak value of the isolation simulation curve is not lower than the isolation threshold corresponding to the antenna; Here, when the verification result is the third verification result, optimize for two antennas (the second candidate antenna), select two antennas whose peak values of the isolation simulation curve are not lower than the corresponding thresholds, adjust the second set position of each antenna, update the second polarization type of each antenna, and repeat the update until the peak values of the isolation simulation curves of the two antennas are both lower than the isolation threshold, and determine the final setting according to the updated position, initial polarization method and new polarization type.

[0077] The adjustment here can first adjust the distances between the two antennas in the second candidate antenna and the synthetic aperture radar antenna respectively. If the peak values of the isolation simulation curves between the two antennas in the second candidate antenna and the synthetic aperture radar antenna are still not lower than the isolation threshold corresponding to the antenna after adjusting the distances, the positions of the two antennas in the second candidate antenna can be swapped, and the polarization mode can be adjusted again. If it is still not lower than the isolation threshold corresponding to the antenna, a metal isolation plate can be set between each antenna in the second candidate antenna and the synthetic aperture radar antenna to block interference.

[0078] When the verification result is the fourth verification result, update the third setting positions of each antenna on the second surface of the antenna substrate and the third polarization types of each antenna in the initial simulation test model until the peak values of the isolation simulation curves of each antenna are all lower than the isolation threshold, and determine the final setting positions, polarization modes, and polarization types according to the updated corresponding third setting positions, initial polarization modes, and third polarization types.

[0079] When the verification result is the fourth verification result, optimize for three antennas, select three antennas whose peak values of the isolation simulation curves are not lower than the corresponding thresholds, adjust the third setting positions of each antenna, and update the third polarization types of each antenna. Repeat the update until the peak values of the isolation simulation curves of the three antennas are all lower than the isolation threshold.

[0080] Determine the final setting according to the updated positions, initial polarization modes, and new polarization types. By adjusting the positions and polarization types of the antennas, reduce the peak values of the isolation simulation curves to meet the requirements of the isolation threshold.

[0081] Here, the fourth verification result means that the peak values of the isolation simulation curves between each antenna in the test antenna and the synthetic aperture radar antenna are all lower than the isolation threshold.

[0082] According to the verification results, select different numbers of antennas for optimization, and gradually adjust the parameters until the conditions are met, including the positions, polarization types, and polarization modes of the antennas. By comparing the peak values of the simulation curves with the isolation threshold, determine whether the optimization is successful. This method ensures the best performance of the antennas while meeting the isolation requirements by gradually optimizing the antenna configuration.

[0083] Specifically, the communication integrated antenna integrated board further includes a satellite main controller. Among them, 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 perform data transmission with the ground communication station.

[0084] 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 analyzes the request to determine the source antenna of the request and the specific transmission requirements.

[0085] According to the analysis result, the satellite main controller combines the current satellite attitude, orbital parameters, and the position information of the ground communication station to calculate the target orientation that the second surface of the antenna substrate needs to be adjusted, and generates corresponding control instructions.

[0086] The satellite main controller sends the 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 that sends 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 and the ground communication station to establish a data transmission link and starts the data transmission process.

[0087] 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 antennas (including data transmission, remote control, and telemetry antennas) are all arranged on the second surface. Their installation positions, polarization modes, and types are determined through the following steps: first, obtain the isolation simulation curves between the synthetic aperture radar antenna and each test antenna, and then comprehensively analyze based on all the simulation curves to finally determine the specific installation parameters of each antenna on the second surface.

[0088] Through the present application, the difficulty of attitude control design is reduced. The SAR antenna and the measurement and control data transmission antennas are in one plane, and the satellite attitude design for different tasks is relatively simple; the weight of the whole satellite is reduced. There is no need to design corresponding structural brackets to increase the stability of the antennas, reducing the weight introduced by the structural components and lowering the launch cost; the interference risk with other payloads of the whole satellite is reduced, giving relatively more space for stacking other payloads.

[0089] 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, reducing the design and production cost; the antenna does not require a support structure, which can reduce the weight of the whole satellite and lower the launch cost; the complexity of satellite attitude design is reduced.

[0090] The embodiment of the present application also provides a simulation test method, and the method includes: Construct an initial simulation test model, where the initial simulation test model includes the initial positions of the synthetic aperture radar antenna, data transmission antenna, remote control antenna, and 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, based on the simulation test model, determine the working frequency band corresponding to the antenna at the initial position, initial polarization type, and initial polarization mode; For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determine the isolation simulation curve when the antenna and the synthetic aperture radar antenna are both transmitting signals in the corresponding operating frequency band. The abscissa of the isolation simulation curve is the operating frequency, and the ordinate of the isolation simulation curve is the isolation degree; For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determine the verification result of the initial position, the initial polarization type, and the 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; For the verification result, determine the installation position, the polarization type, and the polarization mode under the polarization type of the antenna on the second surface of the antenna substrate.

[0091] An embodiment of the present application further provides a communication satellite, including: A satellite platform; A satellite main controller, which is arranged inside the communication satellite body; The communication integrated antenna integrated board as described above, and the communication pins of each antenna in the communication integrated antenna integrated board are connected to the satellite main controller to form information interaction.

[0092] Those skilled in the art can 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 foregoing method embodiments, and will not be elaborated herein.

[0093] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed mutual coupling or direct coupling or communication connection can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be in an electrical, mechanical, or other form.

[0094] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0095] In addition, in each embodiment of the present application, each functional unit can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0096] If the above-mentioned function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a 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 causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs.

[0097] Finally, it should be noted that the above-described embodiments are only specific implementation manners of the present application, used to illustrate the technical solutions of the present application, rather than limiting them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes, or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication integrated antenna integrated board, characterized in that Comprising: An antenna substrate, the first surface of the antenna substrate being for fixing to a satellite platform, A synthetic aperture radar antenna, disposed on the second surface of the antenna substrate, A test antenna, disposed 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: Determine the isolation simulation curve between any one of the synthetic aperture radar antenna and the test antenna, the test antenna including a data transmission antenna, a remote control antenna, and a telemetry antenna; According to all the isolation simulation curves, determine 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.

2. The communication integrated antenna integrated board according to claim 1, wherein The synthetic aperture radar antenna, the data transmission antenna, the remote control antenna, and the telemetry antenna are all arranged in the form of microstrip array antennas on the second surface of the antenna substrate. The second surface of the antenna substrate includes an adjacent first area and a second area. The first area is disposed at the first side position of the antenna substrate, and the second area is disposed at the second side position of the antenna substrate. The first side and the second side are oppositely arranged. The synthetic aperture radar antenna is disposed in the first area, and the data transmission antenna, the remote control antenna, and the telemetry antenna are disposed 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 are adjacent to each other in the second area.

3. The communication integrated antenna integrated board according to claim 2, wherein, 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 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: Construct an initial simulation test model, the initial simulation test model including the 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, the initial polarization type of each antenna, and the initial polarization mode of each antenna; For each antenna, based on the initial simulation test model, determine the operating frequency band corresponding to the antenna at the initial position, the initial polarization type, and the initial polarization mode; For each of the data transmission antenna, the remote control antenna, and the telemetry antenna, determine the isolation simulation curve when the antenna and the synthetic aperture radar antenna are both transmitting signals in the corresponding operating frequency band. 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, according to the isolation simulation curve corresponding to the antenna and the isolation threshold corresponding to the antenna, determine the verification result of the initial position, the initial polarization type, and the initial polarization mode corresponding to the antenna in the initial simulation test model; Based on the verification result, determine the installation position of the antenna on the second surface of the antenna substrate, the polarization type, and the polarization mode under the polarization type.

5. The communication integrated antenna integrated board according to claim 4, wherein, The verification result is determined in the following manner: For the isolation simulation curve corresponding to each of the data 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 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 value of the isolation simulation curve of any two 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 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 the installation position of the antenna on the second surface of the antenna substrate, the polarization type, and the polarization mode under the polarization type based on the verification result includes: When it is detected that the verification result is the first verification result, determine 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 as the final installation position, polarization mode, and polarization type of each antenna for actual application; When it is detected that the verification result is the second verification result, determine the first candidate antenna, and update the first installation position and the first polarization type of the first candidate antenna in the initial simulation test model until the peak value of the isolation simulation curve of the first candidate antenna is lower than the isolation threshold. Determine the final installation position, polarization mode, and polarization type based on the updated corresponding first installation position, initial polarization mode, and first polarization type. The first candidate antenna includes one antenna, and the first candidate antenna is the antenna among the test antennas whose peak value of the isolation simulation curve is not lower than the isolation threshold corresponding to the antenna; When it is detected that the verification result is the third verification result, determine the second candidate antenna, and update the second installation position and the second polarization type of the second candidate antenna in the initial simulation test model until the peak value of the isolation simulation curve of the second candidate antenna is lower than the isolation threshold. Determine the final installation position, polarization mode, and polarization type based on the updated corresponding second installation position, initial polarization mode, and second polarization type. The second candidate antenna includes two antennas, and each antenna in the second candidate antenna is the antenna among the test antennas whose peak value of the isolation simulation curve is not lower than the isolation threshold corresponding to the antenna; When the verification result is detected as the fourth verification result, update the third setting positions of each antenna on the second surface of the antenna substrate and the third polarization types of each antenna in the initial simulation test model until the peak values of the isolation simulation curves of each antenna are all lower than the isolation threshold, and determine the final setting positions, polarization methods, and polarization types according to the corresponding updated third setting positions, initial polarization methods, and third polarization types.

7. The communication integrated antenna integrated board according to claim 4, characterized in that, Determine the operating frequency bands of each antenna in the following manner: Obtain the operating curves of each antenna for signal transmission at the initial positions, initial polarization types, and initial polarization methods corresponding to the initial simulation test model, where the abscissa of the operating curve is the operating frequency and the ordinate of the operating curve is the operating index for measuring the signal transmission efficiency of the antenna; For the index threshold of each antenna, intercept the frequency interval corresponding to the index threshold on the operating curve of the antenna as the operating 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 further includes a satellite main controller, wherein the satellite main controller is configured 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 perform data transmission with the ground communication station.

9. A simulation test method, characterized in that The method includes: Construct an initial simulation test model, where the initial simulation test model includes the initial positions of the synthetic aperture radar antenna, data transmission antenna, remote control antenna, and telemetry antenna on the second surface of the antenna substrate, the initial polarization type of each antenna, and the initial polarization method of each antenna; For each antenna, determine the corresponding operating frequency band of the antenna at the initial position, initial polarization type, and initial polarization method based on the simulation test model; For each of the data transmission antenna, remote control antenna, and telemetry antenna, determine the isolation simulation curve when the antenna and the synthetic aperture radar antenna both perform signal transmission in the corresponding operating frequency bands, where the abscissa of the isolation simulation curve is the operating frequency and the ordinate of the isolation simulation curve is the isolation degree; For each of the data transmission antenna, remote control antenna, and telemetry antenna, determine the verification result of the initial position, initial polarization type, and initial polarization method 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; For the verification result, determine the setting position, polarization type, and polarization method of the antenna on the second surface of the antenna substrate.

10. A communication satellite, characterized in that, Includes: Satellite platform; Satellite main controller, arranged inside the communication satellite body; The communication integrated antenna integrated board according to any one of claims 1-8, where the communication pins of each antenna in the communication integrated antenna integrated board are connected to the satellite main controller to form information interaction.

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