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CN-119834854-B - Satellite communication system

CN119834854BCN 119834854 BCN119834854 BCN 119834854BCN-119834854-B

Abstract

The embodiment of the application provides a satellite communication system which comprises a dual-polarized antenna layer, an electric modulation dual-polarized tracking layer and an amplitude modulation phase modulation beam scanning layer, wherein the dual-polarized antenna layer comprises M multiplied by N dual-polarized antenna units, the electric modulation dual-polarized tracking layer comprises M multiplied by N electric modulation dual-polarized receiving and transmitting modules, and the amplitude modulation phase modulation beam scanning layer comprises M multiplied by N receiving and transmitting chips. The application comprises a dual-polarized antenna layer, an electric modulation dual-polarized tracking layer and an amplitude modulation phase modulation wave beam scanning layer which are sequentially connected, wherein the dual-polarized antenna layer is used for receiving and transmitting dual-polarized electromagnetic wave signals, the electric modulation dual-polarized receiving and transmitting module is used for receiving and transmitting horizontal polarization satellite signals and vertical horizontal polarization satellite signals, and the amplitude modulation phase modulation wave beam scanning layer is used for adjusting the amplitudes and phases of the horizontal polarization satellite signals and the vertical polarization satellite signals, so that the satellite communication efficiency is improved.

Inventors

  • YANG XINYI
  • ZHANG TAILAI
  • WANG ZHENGBIN

Assignees

  • 上海星思半导体有限责任公司

Dates

Publication Date
20260508
Application Date
20241231

Claims (9)

  1. 1. A satellite communication system, the satellite communication system comprising: The dual-polarized antenna layer comprises M multiplied by N dual-polarized antenna units, wherein the M multiplied by N dual-polarized antenna units are used for receiving and transmitting dual-polarized electromagnetic wave signals, and M and N are positive integers; the electric-tuning dual-polarized tracking layer comprises M multiplied by N electric-tuning dual-polarized transceiver modules, the M multiplied by N electric-tuning dual-polarized transceiver modules are in one-to-one correspondence and are in communication connection with the M multiplied by N dual-polarized antenna units, and the electric-tuning dual-polarized transceiver modules are used for receiving and transmitting horizontal polarized satellite signals and receiving and transmitting vertical polarized satellite signals; the amplitude modulation phase modulation wave beam scanning layer comprises M multiplied by N transceiver chips, the M multiplied by N transceiver chips are in one-to-one correspondence and are in communication connection with the M multiplied by N electrically-modulated dual-polarized transceiver modules, and the transceiver chips are used for adjusting the amplitude and the phase of the horizontally polarized satellite signals and the vertically polarized satellite signals; Each dual polarized antenna unit comprises a horizontal polarized port and a vertical polarized port, and each electrically-modulated dual polarized transceiver module comprises a horizontal polarized transceiver port, a vertical polarized transceiver port and a microprocessor; In any group of communication connection of the dual-polarized antenna unit and the electrically-modulated dual-polarized transceiver module, the horizontal polarization port is connected with the corresponding horizontal polarization transceiver port, the vertical polarization port is connected with the vertical polarization transceiver port, and the microprocessor is used for controlling the reception and transmission of the horizontal polarization satellite signals and the reception and transmission of the vertical polarization satellite signals; The electric modulation dual polarization transceiver module comprises a receiving circuit and a transmitting circuit; in any group of communication connection, the dual polarized antenna unit and the electrically tunable dual polarized transceiver module: The horizontal polarization port and the vertical polarization port are connected to the horizontal polarization transceiving port and the vertical polarization transceiving port through the receiving circuit, and the receiving circuit is used for receiving the horizontal polarization satellite signals and the vertical polarization satellite signals; The horizontal polarization transceiving port and the vertical polarization transceiving port are connected to the horizontal polarization port and the vertical polarization port through the transmitting circuit, and the transmitting circuit is used for transmitting the horizontal polarization satellite signals and the vertical polarization satellite signals.
  2. 2. The satellite communication system of claim 1, wherein the receive circuit comprises a first RF low noise amplifier, a first RF bandpass filter, a first RF power divider, a first downconverter, a first digital attenuator, a first IF combiner, a first IF amplifier, a first IF bandpass filter, a second RF low noise amplifier, a third RF bandpass filter, a second RF power divider, a second downconverter, and a second digital attenuator; The horizontal polarization port sequentially passes through the first radio frequency low-noise amplifier, the first radio frequency band-pass filter, the first radio frequency power divider, the first down-converter, the first numerical control attenuator, the first intermediate frequency combiner, the first intermediate frequency amplifier and the first intermediate frequency band-pass filter to be connected with corresponding horizontal polarization receiving and transmitting ports, and the first numerical control attenuator is also connected with the microprocessor; the vertical polarization port sequentially passes through the second radio frequency low-noise amplifier, the third radio frequency band-pass filter, the second radio frequency power divider, the second down converter, the second digital attenuator, the first intermediate frequency combiner, the first intermediate frequency amplifier and the first intermediate frequency band-pass filter to be connected with corresponding horizontal polarization receiving and transmitting ports, and the second digital attenuator is also connected with the microprocessor.
  3. 3. The satellite communication system of claim 2, wherein the receive circuit further comprises a first frequency synthesizer, a first equal-amplitude in-phase power divider, a first phase shifter, a second phase shifter, and a first digital-to-analog converter; The first frequency synthesizer sequentially passes through the first equal-amplitude in-phase power divider, the first phase shifter, the second phase shifter and the first digital-to-analog converter which are connected in parallel, wherein the first phase shifter is also connected with the first down converter, and the second phase shifter is also connected with the second down converter.
  4. 4. The satellite communication system of claim 1, wherein the receive circuit comprises a second RF low-noise amplifier, a third RF bandpass filter, a second RF power divider, a third downconverter, a fifth digital controlled attenuator, a second IF combiner, a third IF amplifier, a third IF bandpass filter, a first RF low-noise amplifier, a first RF bandpass filter, a first RF power divider, a fourth downconverter, and a sixth digital controlled attenuator; The vertical polarization port sequentially passes through the second radio frequency low-noise amplifier, the third radio frequency band-pass filter, the second radio frequency power divider, the third down converter, the fifth numerical control attenuator, the second intermediate frequency combiner, the third intermediate frequency amplifier and the third intermediate frequency band-pass filter to be connected with corresponding vertical polarization receiving and transmitting ports, and the fifth numerical control attenuator is also connected with the microprocessor; The horizontal polarization port sequentially passes through the first radio frequency low-noise amplifier, the first radio frequency band-pass filter, the first radio frequency power divider, the fourth down-converter, the sixth numerical control attenuator, the second intermediate frequency combiner, the third intermediate frequency amplifier and the third intermediate frequency band-pass filter to be connected with corresponding vertical polarization receiving and transmitting ports, and the sixth numerical control attenuator is also connected with the microprocessor.
  5. 5. The satellite communication system of claim 4, wherein the receive circuit further comprises a third frequency synthesizer, a third equal amplitude in-phase power divider, a fifth phase shifter, a sixth phase shifter, and a third digital-to-analog converter; the third frequency synthesizer is connected with the microprocessor sequentially through the third equal-amplitude in-phase power divider, the fifth phase shifter, the sixth phase shifter and the third digital-to-analog converter, the fifth phase shifter is further connected with the third down converter, and the sixth phase shifter is further connected with the fourth down converter.
  6. 6. The satellite communication system of claim 1, wherein the transmit circuit comprises a second intermediate frequency amplifier, a second intermediate frequency bandpass filter, a first intermediate frequency power divider, a third digitally controlled attenuator, a first up-converter, a first radio frequency combiner, a first radio frequency amplifier, a second radio frequency bandpass filter, a fourth intermediate frequency amplifier, a fourth intermediate frequency bandpass filter, a second intermediate frequency power divider, an eighth digitally controlled attenuator, and a fourth up-converter; the horizontal polarization receiving and transmitting port sequentially passes through the second intermediate frequency amplifier, the second intermediate frequency band-pass filter, the first intermediate frequency power divider, the third numerical control attenuator, the first up-converter, the first radio frequency combiner, the first radio frequency amplifier and the second radio frequency band-pass filter to be connected with the corresponding horizontal polarization ports, and the third numerical control attenuator is also connected with the microprocessor; The vertical polarization receiving and transmitting port sequentially passes through the fourth intermediate frequency amplifier, the fourth intermediate frequency band-pass filter, the second intermediate frequency power divider, the eighth numerical control attenuator, the fourth up-converter, the first radio frequency combiner, the first radio frequency amplifier, the second radio frequency band-pass filter and the corresponding horizontal polarization port, and the eighth numerical control attenuator is further connected with the microprocessor.
  7. 7. The satellite communication system of claim 6, wherein the transmit circuit further comprises a second frequency synthesizer, a second equal-amplitude in-phase power divider, a third phase shifter, a fourth phase shifter, and a second digital-to-analog converter; The second frequency synthesizer is connected with the microprocessor through the second equal-amplitude in-phase power divider, the third phase shifter, the fourth phase shifter and the second digital-to-analog converter in parallel, and the third phase shifter is also connected with the first up-converter.
  8. 8. The satellite communication system of claim 1, wherein the transmit circuit comprises a fourth intermediate frequency amplifier, a fourth intermediate frequency bandpass filter, a second intermediate frequency power divider, a seventh digital controlled attenuator, a third up-converter, a second radio frequency combiner, a second radio frequency amplifier, a fourth radio frequency bandpass filter, a second intermediate frequency amplifier, a second intermediate frequency bandpass filter, a first intermediate frequency power divider, a fourth digital controlled attenuator, and a second up-converter; The vertical polarization receiving and transmitting port sequentially passes through the fourth intermediate frequency amplifier, the fourth intermediate frequency band-pass filter, the second intermediate frequency power divider, the seventh numerical control attenuator, the third up-converter, the second radio frequency combiner, the second radio frequency amplifier and the fourth radio frequency band-pass filter to be connected with the corresponding vertical polarization ports, and the seventh numerical control attenuator is also connected with the microprocessor; The horizontal polarization receiving and transmitting port sequentially passes through the second intermediate frequency amplifier, the second intermediate frequency band-pass filter, the first intermediate frequency power divider, the fourth numerical control attenuator, the second up-converter, the second radio frequency combiner, the second radio frequency amplifier and the fourth radio frequency band-pass filter to be connected with the corresponding vertical polarization port, and the fourth numerical control attenuator is also connected with the microprocessor.
  9. 9. The satellite communication system of claim 8, wherein the transmit circuit further comprises a fourth frequency synthesizer, a fourth constant amplitude in-phase power divider, a seventh phase shifter, an eighth phase shifter, and a fourth digital-to-analog converter; The fourth frequency synthesizer is connected with the microprocessor through the fourth constant amplitude in-phase power divider, the seventh phase shifter, the eighth phase shifter and the fourth digital-to-analog converter in parallel, and the seventh phase shifter is also connected with the third up-converter.

Description

Satellite communication system Technical Field The embodiment of the application relates to the technical field of satellite communication, in particular to a satellite communication system. Background Communication satellites become spacecrafts with the largest number of in-orbit satellites, and low-orbit satellites are close to the earth and have short paths, so that various defects of geostationary orbit satellites can be overcome. Because the coverage area of the low orbit satellite signals is small, in order to cover the world, a constellation and a system are formed by tens of satellites to carry out global communication, so that the main beam of the ground terminal satellite antenna needs to continuously track and aim at the overhead satellite. In the prior art, the ground terminal is difficult to perform position tracking and polarization tracking on an overhead satellite, and the current electric modulation polarization technology can only perform single polarization wave synthesis and tracking on orthogonal polarization waves of satellite signals, so that the problem of low satellite communication efficiency is caused. Disclosure of Invention The embodiment of the application provides a satellite communication system, which aims to solve the problem of low satellite communication efficiency in the prior art. To solve the above problems, the present application is achieved as follows: The embodiment of the application provides a satellite communication system, which comprises: The dual-polarized antenna layer comprises M multiplied by N dual-polarized antenna units, wherein the M multiplied by N dual-polarized antenna units are used for receiving and transmitting dual-polarized electromagnetic wave signals, and M and N are positive integers; the electric-tuning dual-polarized tracking layer comprises M multiplied by N electric-tuning dual-polarized transceiver modules, the M multiplied by N electric-tuning dual-polarized transceiver modules are in one-to-one correspondence and are in communication connection with the M multiplied by N dual-polarized antenna units, and the electric-tuning dual-polarized transceiver modules are used for receiving and transmitting horizontal polarized satellite signals and receiving and transmitting vertical polarized satellite signals; The amplitude modulation phase modulation wave beam scanning layer comprises M multiplied by N receiving and transmitting chips, the M multiplied by N receiving and transmitting chips are in one-to-one correspondence and are in communication connection with the M multiplied by N electrically-modulated dual-polarized receiving and transmitting modules, and the receiving and transmitting chips are used for adjusting the amplitude and the phase of the horizontal polarized satellite signals and the vertical polarized satellite signals. Optionally, each dual polarized antenna unit includes a horizontal polarized port and a vertical polarized port, and each electrically tunable dual polarized transceiver module includes a horizontal polarized transceiver port, a vertical polarized transceiver port and a microprocessor; In any group of communication connection of the dual-polarized antenna unit and the electrically-modulated dual-polarized transceiver module, the horizontal polarization port is connected with the corresponding horizontal polarization transceiver port, the vertical polarization port is connected with the vertical polarization transceiver port, and the microprocessor is used for controlling the reception and transmission of the horizontal polarization satellite signals and the reception and transmission of the vertical polarization satellite signals; The electric modulation dual polarization transceiver module comprises a receiving circuit and a transmitting circuit; in any group of communication connection, the dual polarized antenna unit and the electrically tunable dual polarized transceiver module: The horizontal polarization port and the vertical polarization port are connected to the horizontal polarization transceiving port and the vertical polarization transceiving port through the receiving circuit, and the receiving circuit is used for receiving the horizontal polarization satellite signals and the vertical polarization satellite signals; The horizontal polarization transceiving port and the vertical polarization transceiving port are connected to the horizontal polarization port and the vertical polarization port through the transmitting circuit, and the transmitting circuit is used for transmitting the horizontal polarization satellite signals and the vertical polarization satellite signals. Optionally, the receiving circuit comprises a first radio frequency low-noise amplifier, a first radio frequency band-pass filter, a first radio frequency power divider, a first down-converter, a first digital control attenuator, a first intermediate frequency combiner, a first intermediate frequency amplifier, a first intermedi