CN113471686A - Active integrated electrically-modulated polarized transmitting-receiving panel antenna - Google Patents
Active integrated electrically-modulated polarized transmitting-receiving panel antenna Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
- H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
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Abstract
The invention relates to an active integrated electrically-modulated polarized transmitting and receiving panel antenna, and belongs to the technical field of satellite communication. The dual-polarized antenna comprises a dual-polarized antenna panel, wherein an intermediate frequency transmission amplifier amplifies an L-band signal, and then the L-band signal is transmitted to a common port of an intermediate frequency transmission power divider for equal-amplitude and same-phase power division; two ports of the transmitting intermediate-frequency power divider are connected with a transmitting port of a second duplexer through a transmitting vertical polarization link, and a public port of the second duplexer is connected with a vertical polarization port of a dual-polarized antenna panel, so that feeding of vertical polarization waves is realized. The invention can adjust the amplitude-phase proportion of horizontal polarization waves and vertical polarization waves through the voltage-controlled reflection-type phase shifter and the numerical control attenuator, thereby realizing the adjustment of any polarization state.
Description
Technical Field
The invention relates to an active integrated electrically-modulated polarized transmitting and receiving panel antenna, and belongs to the technical field of satellite communication.
Background
The modern satellite communication has the advantages of wide coverage area, long communication distance, wide frequency band, flexible service, stable and reliable performance, convenient deployment and no limitation of geographic environment, is an important component of a modern wireless communication and 6G day-ground integrated communication system, and has wide application in aspects of broadband wireless communication, television broadcasting, emergency communication and the like. However, due to the change of the attitude of the ground carrier, environmental rain, multipath propagation and other influences, the polarization state of the electromagnetic wave changes, so that the polarization mismatch of the communication equipment is caused, the signal power is reduced, and the communication quality is poor. The traditional mechanical antenna polarization adjusting technology has low efficiency and poor precision. Therefore, realizing the high-precision active integrated electrically-modulated polarized transceiving antenna is a technical difficulty to be solved and perfected urgently in a modern satellite communication system.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide an active integrated electrically-modulated polarized transmitting and receiving panel antenna, which can adjust the amplitude-phase proportion of horizontal polarization waves and vertical polarization waves through a voltage-controlled reflective phase shifter and a numerical control attenuator so as to realize the adjustment of any polarization state.
In order to solve the technical problems, the active integrated electrically-modulated polarized transmitting-receiving panel antenna comprises a dual-polarized antenna panel, a transmitting intermediate-frequency amplifier and a power divider, wherein the transmitting intermediate-frequency amplifier amplifies an L-band signal and then sends the L-band signal to a common port of the transmitting intermediate-frequency power divider for equal-amplitude and same-phase power division,
one port of the transmitting intermediate-frequency power divider is connected with a transmitting port of a first duplexer through a transmitting horizontal polarization link, and a public port of the first duplexer is connected with a horizontal polarization port of a dual-polarized antenna panel to feed in horizontal polarization waves;
two ports of the transmitting intermediate-frequency power divider are connected with a transmitting port of a second duplexer through a transmitting vertical polarization link, and a public port of the second duplexer is connected with a vertical polarization port of a dual-polarized antenna panel, so that feeding of vertical polarization waves is realized.
Furthermore, the transmitting horizontal polarization link comprises a transmitting first digital control attenuator, a transmitting first mixer, a transmitting first radio frequency band-pass filter and a transmitting first power amplifier which are connected in sequence, gain adjustment of horizontal polarization signals is realized, filtering and amplification are carried out after up-conversion is carried out on the horizontal polarization intermediate frequency signals, and then the signals enter a transmitting port of a first duplexer;
the transmitting vertical polarization link comprises a transmitting second digital control attenuator, a transmitting second mixer, a transmitting second radio frequency band-pass filter and a transmitting second power amplifier which are sequentially connected, the gain adjustment of the vertical polarization signal is realized, the vertical polarization intermediate frequency signal is filtered and amplified after being subjected to up-conversion, and then the vertical polarization intermediate frequency signal enters a transmitting port of a second duplexer.
Further, the external 10MHz reference signal is connected to the input end of the transmit frequency synthesizer, the output end of the transmit frequency synthesizer is connected to the input end of the transmit local oscillator filter, and the output end of the transmit local oscillator filter is connected to the common port of the transmit local oscillator power divider;
one port of the transmitting local oscillator power divider is connected with the input end of the transmitting first voltage-controlled reflective phase shifter, and the output end of the transmitting first voltage-controlled reflective phase shifter is connected with the local oscillator input end of the transmitting first frequency mixer;
and the two ports of the transmitting local oscillator power divider are connected with the input end of the transmitting second voltage-controlled reflective phase shifter, and the output end of the transmitting second voltage-controlled reflective phase shifter is connected with the local oscillator input end of the transmitting second frequency mixer.
The receiving port of the first duplexer is connected with one port of the receiving intermediate-frequency combiner through a receiving horizontal polarization link, the receiving port of the second duplexer is connected with two ports of the receiving intermediate-frequency combiner through a receiving vertical polarization link, a common port of the receiving intermediate-frequency combiner is connected with the input end of the receiving intermediate-frequency amplifier, and the output end of the receiving intermediate-frequency amplifier is used as a receiving L-waveband signal to be output;
the receiving horizontal polarization link comprises a receiving first low noise amplifier, a receiving first radio frequency band-pass filter, a receiving first down converter and a receiving first digital controlled attenuator which are sequentially connected, wherein a receiving port of the first duplexer is connected with an input end of the receiving first low noise amplifier, and an output end of the receiving first digital controlled attenuator is connected with a port of the receiving intermediate frequency combiner;
the receiving vertical polarization link comprises a receiving second low noise amplifier, a receiving second radio frequency band-pass filter, a receiving second down converter and a receiving second digital controlled attenuator which are sequentially connected, a receiving port of the second duplexer is connected with an input end of the receiving second low noise amplifier, and an output end of the receiving second digital controlled attenuator is connected with two ports of the receiving intermediate frequency combiner.
Furthermore, the output end of the receiving reference crystal oscillator is connected with the common port of the receiving reference power divider,
one port of the receiving reference power divider is connected with the input end of the receiving first voltage-controlled reflection type phase shifter, the output end of the receiving first voltage-controlled reflection type phase shifter is connected with the reference input port of the receiving first frequency synthesizer, and the output end of the receiving first frequency synthesizer is connected with the local oscillator input end of the receiving first down converter;
the two ports of the receiving reference power divider are connected with the input end of the receiving second voltage-controlled reflection type phase shifter, the output end of the receiving second voltage-controlled reflection type phase shifter is connected with the reference input port of the receiving second frequency synthesizer, and the output end of the receiving second frequency synthesizer is connected with the local oscillation input end of the receiving second down converter.
Furthermore, the receiving frequency synthesizer I and the receiving frequency synthesizer II both adopt decimal frequency division phase-locked loops integrated with a voltage-controlled oscillator, and the output frequency range of the decimal frequency division phase-locked loops is 9.75 GHz-10.6 GHz.
The center frequency of the first voltage-controlled reflection type phase shifter and the second voltage-controlled reflection type phase shifter is 25MHz, the control voltage is 0-5V, and the phase shifting range after frequency doubling of the frequency synthesizer is 0-360 degrees.
Furthermore, the control unit of the transceiving channel consists of a microcontroller, a first double-channel digital-to-analog converter and a second double-channel digital-to-analog converter,
each amplitude signal output end of the microcontroller is respectively connected with the control ends of the first-number-emission digital controlled attenuator, the second-number-emission digital controlled attenuator, the first-number-reception digital controlled attenuator and the second-number-reception digital controlled attenuator;
the transmission phase signal output end of the microcontroller is connected with the digital signal input end of the first double-channel digital-to-analog converter, the control voltage output end of the first double-channel digital-to-analog converter is connected with the control end of the first transmission voltage-controlled reflective phase shifter, and the control voltage output end of the first double-channel digital-to-analog converter is connected with the control end of the second transmission voltage-controlled reflective phase shifter.
The invention has the beneficial effects that: 1. the invention has high polarization adjustment precision, realizes electric modulation polarization by respectively adjusting the amplitude-phase proportion of horizontal and vertical polarized waves of a receiving and transmitting channel by adopting a numerical control attenuator and a voltage-controlled reflective phase shifter, and has the adjustment range of 0-180 degrees and the adjustment precision of 1 degree.
2. The invention has simple structure, adopts the intermediate frequency numerical control attenuator for horizontal and vertical polarization amplitude adjustment, adopts the pressure control reflection type phase shifter for phase adjustment, realizes the phase adjustment of the transmitting signal by shifting the phase of the local oscillation signal through the transmitting channel, realizes the phase adjustment of the receiving signal by shifting the phase of the reference signal through the receiving channel, and has low phase-shifting realization cost and large adjustment range.
3. The polarization control method is simple and convenient, firstly, the amplitude and the phase of the receiving and transmitting horizontal and vertical polarization links are aligned through an automatic calibration mode, then the amplitude control word and the phase control word of the horizontal and vertical polarization waves are obtained by looking up a table according to the required polarization angle, and the horizontal polarization and vertical polarization wave amplitude-phase proportion of a receiving and transmitting channel is respectively controlled.
4. The local oscillation frequencies of the first transmitting mixer and the second transmitting mixer are both 12.8GHz and are generated by a transmitting frequency synthesizer; an external 10MHz reference signal is input into a transmitting frequency synthesizer, the output of the transmitting frequency synthesizer is subjected to filtering harmonic stray by a transmitting local oscillator filter, then equal-amplitude in-phase power division is carried out by a transmitting local oscillator power divider, and two paths of local oscillator signals output by the transmitting local oscillator power divider are respectively subjected to phase shifting by a transmitting first voltage-controlled reflective phase shifter and a transmitting second voltage-controlled reflective phase shifter and then are sent to local oscillator input ends of a transmitting first frequency mixer and a transmitting second frequency mixer.
5. For any linear polarization wave, the linear polarization wave can be decomposed into two orthogonal linear polarization waves on a Cartesian coordinate system, such as vector sum of horizontal polarization and vertical polarization, so that amplitude and phase adjustment of transmission horizontal polarization and vertical polarization can be realized by adjusting a transmission first-number numerical control attenuator of a horizontal polarization link, a transmission first-number voltage-controlled reflection type phase shifter of a local oscillation link, a transmission second-number numerical control attenuator of a vertical polarization link and a transmission second-number voltage-controlled reflection type phase shifter of a local oscillation link, and the polarization angle of a transmission composite signal can be adjusted randomly within the range of 0-180 degrees.
6. The receiving signal is divided into two paths of horizontal polarization and vertical polarization after being received by the dual-polarization antenna panel, the received horizontal polarization signal is sent to a receiving first low noise amplifier of a receiving horizontal polarization link through a first duplexer, the receiving horizontal polarization link is used for carrying out low noise amplification and filtering on the received Ku-band horizontal polarization small signal, carrying out gain adjustment after down-conversion to an L-band, and then sending the signal to one port of a receiving intermediate frequency power divider; the receiving horizontal polarization signal is sent to a receiving second low noise amplifier of a receiving vertical polarization link through a second duplexer, the receiving vertical polarization link is used for carrying out low noise amplification and filtering on the received Ku-band vertical polarization small signal, carrying out gain adjustment after down-conversion is carried out to an L-band, and then sending the signal to a second port of a receiving intermediate frequency power divider; the receiving intermediate frequency power divider carries out equal-amplitude and same-phase power synthesis on the horizontal polarization signals and the vertical polarization signals, and then sends the signals to a receiving intermediate frequency amplifier for amplification and output.
7. Local oscillation signals of the first down converter and the second down converter are generated by the first frequency synthesizer and the second frequency synthesizer respectively, reference signals of the first frequency synthesizer and the second frequency synthesizer are generated by a reference crystal oscillator, and the frequency of the reference signals is 25 MHz. The 25MHz reference signal is divided by the receiving reference power divider in equal amplitude and in phase, the two paths of reference signals after power division are respectively sent to the receiving first frequency synthesizer after being phase-shifted by the receiving first voltage-controlled reflective phase shifter, and sent to the reference input port of the receiving second frequency synthesizer after being phase-shifted by the receiving second voltage-controlled reflective phase shifter.
8. The amplitude and phase adjustment of the received horizontal polarization and the vertical polarization can be realized by adjusting the first-number receiving digital control attenuator of the horizontal polarization link and the first-number receiving voltage-controlled reflective phase shifter of the reference link, and the second-number receiving digital control attenuator of the vertical polarization link and the second-number receiving voltage-controlled reflective phase shifter of the reference link, so that the polarization angle of the received composite signal can be adjusted at will within the range of 0-180 degrees.
9. Firstly, the amplitude and the phase of a horizontal polarization link and a vertical polarization link of a transceiving channel are aligned in an automatic calibration mode, then, an amplitude control word and a phase control word of a horizontal polarization wave and a vertical polarization wave are obtained by looking up a table according to a required polarization angle, and the amplitude and the phase of the horizontal polarization and the vertical polarization of the transceiving channel are respectively adjusted. The microcontroller is connected with each numerical control attenuator to adjust the amplitude of the transceiving link. The microcontroller controls the first double-channel digital-to-analog converter to output two paths of control voltages to the first transmission voltage-controlled reflection phase shifter and the second transmission voltage-controlled reflection phase shifter to complete phase adjustment of the transmission link. The microcontroller controls the second double-channel digital-to-analog converter to output two paths of control voltages to the first voltage-controlled reflective phase shifter and the second voltage-controlled reflective phase shifter, and phase adjustment of a receiving link is completed. Finally, the adjusting range of the transmitting and receiving polarization is 0-180 degrees, the precision is 1 degree, and the cross polarization is better than 25 dB.
Drawings
Fig. 1 is a schematic diagram of an active integrated electrically-tunable polarized transmitting-receiving panel antenna of the present invention.
In the figure: 1. a transmit intermediate frequency amplifier; 2. transmitting an intermediate frequency power divider; 3. transmitting a signal numerical control attenuator; 4. a transmit first mixer; 5. transmitting a first radio frequency band-pass filter; 6. transmitting a first power amplifier; 7. transmitting a first voltage-controlled reflective phase shifter; 8. transmitting a local oscillator power divider; 9. a transmitting local oscillation filter; 10. a transmit frequency synthesizer; 11. transmitting a second voltage-controlled reflective phase shifter; 12. transmitting a second-number digital control attenuator; 13. a transmit mixer; 14. transmitting a second radio frequency band-pass filter; 15. a transmitting second power amplifier; 16. a first duplexer; 17. a dual polarized antenna panel; 18. receiving a number of the digital attenuator; 19. receiving a first down converter; 20. receiving a first radio frequency band-pass filter; 21. receiving a first low noise amplifier; 22. receiving a first frequency synthesizer; 23. receiving a first voltage-controlled reflective phase shifter; 24. receiving a reference power divider; 25. a second duplexer; 26. receiving a second voltage-controlled reflective phase shifter; 27. receiving a reference crystal oscillator; 28 receiving an intermediate frequency amplifier; 29. receiving an intermediate frequency combiner; 30. receiving a second frequency synthesizer; 31. receiving a second numerical control attenuator; 32. receiving a second down converter; 33. receiving a second radio frequency band-pass filter; 34. receiving a second low noise amplifier; 35. a microcontroller; 36. a first dual-channel digital-to-analog converter; 37. two-channel digital-to-analog converter.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, the active integrated electrically-tunable polarized transmitting-receiving panel antenna of the present invention comprises a dual-polarized antenna panel 17, wherein a transmitting L-band signal is connected to an input terminal of a transmitting intermediate frequency amplifier 1, an output port of the transmitting intermediate frequency amplifier 1 is connected to a common port of a transmitting intermediate frequency power divider 2,
one port of the transmitting intermediate-frequency power divider 2 is connected with a transmitting port of the first duplexer 16 through a transmitting horizontal polarization link, and a common port of the first duplexer 16 is connected with a horizontal polarization port of a dual-polarized antenna panel 17;
two ports of the transmitting intermediate-frequency power divider 2 are connected with a transmitting port of the second duplexer 25 through a transmitting vertical polarization link, and a common port of the second duplexer 25 is connected with a vertical polarization port of the dual-polarized antenna panel 17.
The transmitting horizontal polarization link comprises a transmitting first-number digital control attenuator 3, a transmitting first-number mixer 4, a transmitting first-number radio frequency band-pass filter 5 and a transmitting first-number power amplifier 6 which are sequentially connected, one port of the transmitting intermediate frequency power divider 2 is connected with the input end of the transmitting first-number digital control attenuator 3, and the output end of the transmitting first-number power amplifier 6 is connected with the transmitting port of a first duplexer 16;
the transmitting vertical polarization link comprises a transmitting second-number digital control attenuator 12, a transmitting second-number mixer 13, a transmitting second-number radio frequency band-pass filter 14 and a transmitting second-number power amplifier 15 which are sequentially connected, two ports of the transmitting intermediate frequency power divider 2 are connected with the input end of the transmitting second-number digital control attenuator 12, and the output end of the transmitting second-number power amplifier 15 is connected with the transmitting port of the second duplexer 25.
The transmitting intermediate frequency amplifier 1 amplifies an L-band signal with input power of-20 dBm and frequency of 0.95-1.7 GHz, and then sends the signal to the transmitting intermediate frequency power divider 2 for equal-amplitude and same-phase power division;
the transmitting horizontal polarization link realizes gain adjustment of horizontal polarization signals, up-converts the horizontal polarization intermediate frequency signals to 13.75-14.5 GHz, then carries out filtering and amplification, then enters the transmitting port of the first duplexer 16, and transmits the signals to the horizontal polarization port of the dual-polarization antenna panel 17 from the common port of the first duplexer 16, so that feeding of horizontal polarization waves is realized, and the signals are radiated by the antenna.
The vertical polarization link is transmitted to realize gain adjustment of a vertical polarization signal, the vertical polarization intermediate frequency signal is up-converted to 13.75-14.5 GHz and then filtered and amplified, then the vertical polarization intermediate frequency signal enters the transmitting port of the second duplexer 25 and is transmitted to the vertical polarization port of the dual-polarization antenna panel 17 from the common port of the second duplexer 25, feeding of the vertical polarization wave is realized, and the vertical polarization wave is radiated by the antenna.
The working frequency band of the transmitting intermediate frequency amplifier 1 is 50 MHz-4 GHz, and the gain is 20 dB;
the working frequency of the transmitting intermediate-frequency power divider 2 is 500 MHz-2500 MHz, the amplitude imbalance is 0.02dB, and the phase imbalance is 0.9 degrees;
the first-emission numerical control attenuator 3 and the second-emission numerical control attenuator 12 both adopt 6-bit numerical control attenuators, the attenuation range is 0-31.5 dB, the step is 0.5dB, and the working frequency band is 1 MHz-4 GHz;
the first transmitting mixer 4 and the second transmitting mixer 13 both adopt passive double-balanced mixers, the frequency conversion loss is 8dB, and the working frequency band is 8-16 GHz;
the first transmitting radio frequency band-pass filter 5 and the second transmitting radio frequency band-pass filter 14 both adopt 6-cavity substrate integrated waveguide filters, the center frequency is 14.13GHz, and the bandwidth is 1.25 GHz;
the first transmitting power amplifier 6 and the second transmitting power amplifier 15 both adopt gallium arsenide amplifiers, the working frequency is 13.75 GHz-14.5 GHz, and the output 1dB compression point is 35 dBm.
The external 10MHz reference signal is connected with the input end of the transmitting frequency synthesizer 10, the output end of the transmitting frequency synthesizer 10 is connected with the input end of the transmitting local oscillator filter 9, the output end of the transmitting local oscillator filter 9 is connected with the common port of the transmitting local oscillator power divider 8,
one port of the transmitting local oscillator power divider 8 is connected with the input end of the transmitting first voltage-controlled reflective phase shifter 7, and the output end of the transmitting first voltage-controlled reflective phase shifter 7 is connected with the local oscillator input end of the transmitting first frequency mixer 4;
the two ports of the transmitting local oscillator power divider 8 are connected with the input end of the transmitting second voltage-controlled reflective phase shifter 11, and the output end of the transmitting second voltage-controlled reflective phase shifter 11 is connected with the local oscillator input end of the transmitting second frequency mixer 13.
The local oscillation frequencies of the first transmitting mixer 4 and the second transmitting mixer 13 are both 12.8GHz and are generated by a transmitting frequency synthesizer 10; an external 10MHz reference signal is input into a transmitting frequency synthesizer 10, harmonic stray is filtered out from the output of the transmitting frequency synthesizer 10 through a transmitting local oscillator filter 9, equal-amplitude in-phase power division is carried out by a transmitting local oscillator power divider 8, two local oscillator signals output by the transmitting local oscillator power divider 8 are respectively subjected to phase shifting by a transmitting first voltage-controlled reflective phase shifter 7 and a transmitting second voltage-controlled reflective phase shifter 11 and then are sent to local oscillator input ends of a transmitting first frequency mixer 4 and a transmitting second frequency mixer 13.
The transmitting frequency synthesizer 10 adopts a decimal frequency division phase-locked loop integrated with a voltage controlled oscillator VCO (voltage controlled oscillator), the output frequency range is 12.8 GHz-13.05 GHz, and the phase-locked loop is locked on an externally input 10MHz reference signal; the working frequency band of the first-transmitting voltage-controlled reflective phase shifter 7 and the second-transmitting voltage-controlled reflective phase shifter 11 is 12.7-13.2 GHz, the control voltage is 0-5V, and the phase shifting range is 0-180 degrees.
For any linear polarization wave, the linear polarization wave can be decomposed into two orthogonal linear polarization waves on a Cartesian coordinate system, such as vector sum of horizontal polarization and vertical polarization, so that amplitude and phase adjustment of transmission horizontal polarization and vertical polarization can be realized by adjusting the transmission first-number numerical control attenuator 3 of the horizontal polarization link, the transmission first-number voltage-controlled reflective phase shifter 7 of the local oscillation link, the transmission second-number numerical control attenuator 12 of the vertical polarization link and the transmission second-number voltage-controlled reflective phase shifter 11 of the local oscillation link, and thus the polarization angle of a transmission composite signal can be adjusted randomly within the range of 0-180 degrees.
The signal bandwidth is 1MHz, and the carrier frequency is 14.05 GHz.
The receiving port of the first duplexer 16 is connected with one port of the receiving intermediate frequency combiner 29 through a receiving horizontal polarization link, the receiving port of the second duplexer 25 is connected with two ports of the receiving intermediate frequency combiner 29 through a receiving vertical polarization link, the common port of the receiving intermediate frequency combiner 29 is connected with the input end of the receiving intermediate frequency amplifier 28, and the output end of the receiving intermediate frequency amplifier 28 is used as a receiving L-band signal to be output;
the receiving horizontal polarization link comprises a receiving first low noise amplifier 21, a receiving first radio frequency band-pass filter 20, a receiving first down converter 19 and a receiving first digital controlled attenuator 18 which are connected in sequence, a receiving port of a first duplexer 16 is connected with an input end of the receiving first low noise amplifier 21, and an output end of the receiving first digital controlled attenuator 18 is connected with a port of a receiving intermediate frequency combiner 29;
the receiving vertical polarization link comprises a receiving second low noise amplifier 34, a receiving second radio frequency band-pass filter 33, a receiving second down converter 32 and a receiving second digital controlled attenuator 31 which are connected in sequence, a receiving port of the second duplexer 25 is connected with an input end of the receiving second low noise amplifier 34, and an output end of the receiving second digital controlled attenuator 31 is connected with two ports of the receiving intermediate frequency combiner 29.
The received signal is split into two paths of horizontal polarization and vertical polarization after being received from the dual-polarized antenna panel 17,
the receiving horizontal polarization signal is sent to a receiving first low noise amplifier 21 of a receiving horizontal polarization link through a first duplexer 16, the receiving horizontal polarization link is used for carrying out low noise amplification and filtering on the received Ku-band horizontal polarization small signal, carrying out gain adjustment after down-conversion is carried out to an L-band, and then sending the signal to one port of a receiving intermediate frequency combiner 29;
the received horizontal polarization signal is sent to a second receiving low noise amplifier 34 of a vertical polarization link through a second duplexer 25, the vertical polarization link is used for carrying out low noise amplification and filtering on the received Ku-band vertical polarization small signal, carrying out gain adjustment after down-conversion is carried out to an L-band, and then sending the signal to two ports of a receiving intermediate frequency combiner 29;
the receiving intermediate frequency combiner 29 performs power synthesis of equal amplitude and same phase on the horizontal polarization signal and the vertical polarization signal, and then sends the signals to the receiving intermediate frequency amplifier 28 for amplification and output.
The working frequency bands of the first receiving low noise amplifier 21 and the second receiving low noise amplifier 34 are 10.5-13 GHz, and the noise coefficient is 0.35 dB;
the first receiving radio frequency band-pass filter 20 and the second receiving radio frequency band-pass filter 33 adopt 6-cavity substrate integrated waveguide filters, the center frequency of the filters is 11.7GHz, and the bandwidth is 2.5 GHz;
the working frequency bands of the first receiving down converter 19 and the second receiving down converter 32 are 10.7-12.75 GHz, and the frequency conversion gain is 36 dB;
the working frequency band of the receiving intermediate frequency amplifier 28 is 50 MHz-4 GHz, and the gain is 20 dB;
the working frequency of the receiving intermediate frequency combiner 29 is 500 MHz-2500 MHz, the amplitude imbalance is 0.02dB, and the phase imbalance is 0.9 degrees.
An output terminal of the receiving reference crystal oscillator 27 is connected to a common port of the receiving reference power divider 24,
one port of the receiving reference power divider 24 is connected with the input end of the receiving first voltage-controlled reflective phase shifter 23, the output end of the receiving first voltage-controlled reflective phase shifter 23 is connected with the reference input port of the receiving first frequency synthesizer 22, and the output end of the receiving first frequency synthesizer 22 is connected with the local oscillation input end of the receiving first down converter 19;
the two ports of the receiving reference power divider 24 are connected to the input end of the receiving second voltage-controlled reflective phase shifter 26, the output end of the receiving second voltage-controlled reflective phase shifter 26 is connected to the reference input port of the receiving second frequency synthesizer 30, and the output end of the receiving second frequency synthesizer 30 is connected to the local oscillation input end of the receiving second down converter 32.
Local oscillation signals of the receiving first frequency converter 19 and the receiving second frequency converter 32 are generated by a receiving first frequency synthesizer 22 and a receiving second frequency synthesizer 30 respectively, and reference signals of the receiving first frequency synthesizer 22 and the receiving second frequency synthesizer 30 are generated by a receiving reference crystal oscillator 27, and the frequency of the reference signals is 25 MHz. The 25MHz reference signal is subjected to equal-amplitude and in-phase power division by the receiving reference power divider 24, and the two paths of reference signals after power division are respectively subjected to phase shifting by the receiving first voltage-controlled reflective phase shifter 23 and then sent to the receiving first frequency synthesizer 22, and are subjected to phase shifting by the receiving second voltage-controlled reflective phase shifter 26 and then sent to the reference input port of the receiving second frequency synthesizer 30.
By adjusting the first-receiving numerical control attenuator 18 of the horizontal polarization link and the first-receiving voltage-controlled reflective phase shifter 23 of the reference link, and the second-receiving numerical control attenuator 31 of the vertical polarization link and the second-receiving voltage-controlled reflective phase shifter 26 of the reference link, amplitude and phase adjustment of horizontal polarization and vertical polarization can be achieved, and therefore polarization angle of a received composite signal can be adjusted within the range of 0-180 degrees.
The first receiving frequency synthesizer 22 and the second receiving frequency synthesizer 30 both adopt fractional frequency division phase-locked loops integrated with a voltage controlled oscillator VCO, and the output frequency range of the fractional frequency phase-locked loops is 9.75 GHz-10.6 GHz;
the center frequency of the first voltage-controlled reflective phase shifter 23 and the second voltage-controlled reflective phase shifter 26 is 25MHz, the control voltage is 0-5V, and the phase shift range after frequency doubling by the frequency synthesizer is 0-360 degrees.
At the intermediate frequency of 1.955-1.965 GHz, the antenna receives two service carrier signal frequency spectrums, and the signal quality is good.
The control unit of the transceiving channel consists of a microcontroller 35, a first double-channel digital-to-analog converter 36 and a second double-channel digital-to-analog converter 37,
each amplitude signal output end of the microcontroller 35 is respectively connected with the control ends of the transmitting first-number digital controlled attenuator 3, the transmitting second-number digital controlled attenuator 12, the receiving first-number digital controlled attenuator 18 and the receiving second-number digital controlled attenuator 31;
a transmission phase signal output end of the microcontroller 35 is connected with a digital signal input end of the first double-channel digital-to-analog converter 36, a control voltage output end of the first double-channel digital-to-analog converter 36 is connected with a control end of the first transmission voltage-controlled reflective phase shifter 7, and a control voltage output end of the first double-channel digital-to-analog converter 36 is connected with a control end of the second transmission voltage-controlled reflective phase shifter 11;
the receiving phase signal output end of the microcontroller 35 is connected with the digital signal input end of the second two-channel digital-to-analog converter 37, the control voltage output end of the second two-channel digital-to-analog converter 37 is connected with the control end for receiving the first voltage-controlled reflective phase shifter 23, and the control voltage output end of the second two-channel digital-to-analog converter 37 is connected with the control end for receiving the second voltage-controlled reflective phase shifter 26.
Firstly, the amplitude and the phase of a horizontal polarization link and a vertical polarization link of a transceiving channel are aligned in an automatic calibration mode, then, an amplitude control word and a phase control word of a horizontal polarization wave and a vertical polarization wave are obtained by looking up a table according to a required polarization angle, and the amplitude and the phase of the horizontal polarization and the vertical polarization of the transceiving channel are respectively adjusted. The microcontroller 35 is connected to each digital control attenuator to adjust the amplitude of the transmit-receive link.
The microcontroller 35 controls the first dual-channel digital-to-analog converter 36 to output two control voltages to the first transmission voltage-controlled reflective phase shifter 7 and the second transmission voltage-controlled reflective phase shifter 11, so as to complete phase adjustment of the transmission link.
The microcontroller 35 controls the second two-channel digital-to-analog converter 37 to output two control voltages to the first voltage-controlled reflective phase shifter 23 and the second voltage-controlled reflective phase shifter 26, so as to complete the phase adjustment of the receiving link. Finally, the adjusting range of the transmitting and receiving polarization is 0-180 degrees, the precision is 1 degree, and the cross polarization is better than 25 dB.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. The utility model provides an active integration electricity is transferred and is polarized receiving and dispatching panel antenna, includes dual polarized antenna panel (17), its characterized in that: the device also comprises a transmitting intermediate frequency amplifier (1), wherein the transmitting intermediate frequency amplifier (1) amplifies the L-waveband signal, then sends the L-waveband signal to a common port of a transmitting intermediate frequency power divider (2) for equal-amplitude and same-phase power division,
one port of the transmitting intermediate-frequency power divider (2) is connected with a transmitting port of a first duplexer (16) through a transmitting horizontal polarization link, and a public port of the first duplexer (16) is connected with a horizontal polarization port of a dual-polarized antenna panel (17) to feed in horizontal polarization waves;
two ports of the transmitting intermediate-frequency power divider (2) are connected with a transmitting port of a second duplexer (25) through a transmitting vertical polarization link, and a public port of the second duplexer (25) is connected with a vertical polarization port of a dual-polarized antenna panel (17) to feed in vertical polarization waves.
2. The active integrated electrically-tunable polarized transmitting-receiving panel antenna according to claim 1, characterized in that: the transmitting horizontal polarization link comprises a transmitting first-number digital control attenuator (3), a transmitting first-number mixer (4), a transmitting first-number radio frequency band-pass filter (5) and a transmitting first-number power amplifier (6) which are sequentially connected, gain adjustment of horizontal polarization signals is achieved, filtering and amplification are carried out after up-conversion is carried out on the horizontal polarization intermediate frequency signals, and then the signals enter a transmitting port of a first duplexer (16);
the transmitting vertical polarization link comprises a transmitting second numerical control attenuator (12), a transmitting second mixer (13), a transmitting second radio frequency band-pass filter (14) and a transmitting second power amplifier (15) which are sequentially connected, gain adjustment of vertical polarization signals is achieved, filtering and amplification are carried out after vertical polarization intermediate frequency signals are subjected to up-conversion, and then the vertical polarization intermediate frequency signals enter a transmitting port of a second duplexer (25).
3. The active integrated electrically-tunable polarized transmitting-receiving panel antenna according to claim 2, characterized in that: the external 10MHz reference signal is connected with the input end of a transmitting frequency synthesizer (10), the output end of the transmitting frequency synthesizer (10) is connected with the input end of a transmitting local oscillator filter (9), the output end of the transmitting local oscillator filter (9) is connected with the common port of a transmitting local oscillator power divider (8),
one port of the transmitting local oscillator power divider (8) is connected with the input end of the transmitting first voltage-controlled reflective phase shifter (7), and the output end of the transmitting first voltage-controlled reflective phase shifter (7) is connected with the local oscillator input end of the transmitting first frequency mixer (4);
and the two ports of the transmitting local oscillator power divider (8) are connected with the input end of the transmitting second voltage-controlled reflective phase shifter (11), and the output end of the transmitting second voltage-controlled reflective phase shifter (11) is connected with the local oscillator input end of the transmitting second frequency mixer (13).
4. The active integrated electrically-tunable polarized transmitting-receiving panel antenna according to claim 1, characterized in that: the receiving port of the first duplexer (16) is connected with one port of a receiving intermediate-frequency combiner (29) through a receiving horizontal polarization link, the receiving port of the second duplexer (25) is connected with two ports of the receiving intermediate-frequency combiner (29) through a receiving vertical polarization link, a common port of the receiving intermediate-frequency combiner (29) is connected with the input end of a receiving intermediate-frequency amplifier (28), and the output end of the receiving intermediate-frequency amplifier (28) is used as a receiving L-band signal to be output;
the receiving horizontal polarization link comprises a receiving first low noise amplifier (21), a receiving first radio frequency band-pass filter (20), a receiving first down converter (19) and a receiving first digital controlled attenuator (18) which are sequentially connected, a receiving port of the first duplexer (16) is connected with an input end of the receiving first low noise amplifier (21), and an output end of the receiving first digital controlled attenuator (18) is connected with a port of a receiving intermediate frequency combiner (29);
the receiving vertical polarization link comprises a receiving second low noise amplifier (34), a receiving second radio frequency band-pass filter (33), a receiving second down converter (32) and a receiving second digital controlled attenuator (31) which are sequentially connected, a receiving port of the second duplexer (25) is connected with an input end of the receiving second low noise amplifier (34), and an output end of the receiving second digital controlled attenuator (31) is connected with two ports of the receiving intermediate frequency combiner (29).
5. The active integrated electrically-tunable polarized transmitting-receiving panel antenna according to claim 4, characterized in that: the output end of the receiving reference crystal oscillator (27) is connected with the common port of the receiving reference power divider (24),
one port of the receiving reference power divider (24) is connected with the input end of the receiving first voltage-controlled reflection-type phase shifter (23), the output end of the receiving first voltage-controlled reflection-type phase shifter (23) is connected with the reference input port of the receiving first frequency synthesizer (22), and the output end of the receiving first frequency synthesizer (22) is connected with the local oscillation input end of the receiving first down converter (19);
the two ports of the receiving reference power divider (24) are connected with the input end of the receiving second voltage-controlled reflection-type phase shifter (26), the output end of the receiving second voltage-controlled reflection-type phase shifter (26) is connected with the reference input port of the receiving second frequency synthesizer (30), and the output end of the receiving second frequency synthesizer (30) is connected with the local oscillation input end of the receiving second down converter (32).
6. The active integrated electrically-tunable polarized transmitting-receiving panel antenna according to claim 5, characterized in that: the receiving first frequency synthesizer (22) and the receiving second frequency synthesizer (30) both adopt decimal frequency division phase-locked loops integrated with voltage-controlled oscillators, and the output frequency range is 9.75 GHz-10.6 GHz;
the center frequency of the first voltage-controlled reflection-type phase shifter (23) and the second voltage-controlled reflection-type phase shifter (26) is 25MHz, the control voltage is 0-5V, and the phase shifting range after frequency doubling of the frequency synthesizer is 0-360 degrees.
7. The active integrated electrically-tunable polarized transmitting-receiving panel antenna according to claim 6, characterized in that: the control unit of the transceiving channel consists of a microcontroller (35), a first double-channel digital-to-analog converter (36) and a second double-channel digital-to-analog converter (37),
each amplitude signal output end of the microcontroller (35) is respectively connected with the control ends of the transmitting first-number digital control attenuator (3), the transmitting second-number digital control attenuator (12), the receiving first-number digital control attenuator (18) and the receiving second-number digital control attenuator (31);
the transmission phase signal output end of the microcontroller (35) is connected with the digital signal input end of the first double-channel digital-to-analog converter (36), the control voltage output end of the first double-channel digital-to-analog converter (36) is connected with the control end of the first transmission voltage-controlled reflective phase shifter (7), and the control voltage output end of the first double-channel digital-to-analog converter (36) is connected with the control end of the second transmission voltage-controlled reflective phase shifter (11).
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| CN113176453A (en) * | 2021-03-30 | 2021-07-27 | 上海机电工程研究所 | Array type multi-channel arbitrary polarization signal generation method and system |
| CN114665908A (en) * | 2022-03-21 | 2022-06-24 | 中国电子科技集团公司第三十八研究所 | Attenuation phase-shifting framework with adjustable amplitude-phase precision |
| CN114826174A (en) * | 2022-04-25 | 2022-07-29 | 中国电子科技集团公司第二十九研究所 | Microwave power amplifier capable of realizing polarization mode selection |
| CN116054923A (en) * | 2023-01-29 | 2023-05-02 | 深圳友众科技有限公司 | Electric-tuning dual-polarized satellite signal receiving system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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