CN114826174B - Microwave power amplifier capable of realizing polarization mode selection - Google Patents
Microwave power amplifier capable of realizing polarization mode selection Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
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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
- H01Q3/38—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 the phase-shifters being digital
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
本发明公开了一种可实现极化方式选择的微波功率放大器，该微波功率放大器包括功分器、由第一移相控制模块和第一放大器模块构成的第一放大支路、由第二移相控制模块和第二放大器模块构成的第二放大支路以及90°电桥，经功分器输出至第一放大支路和第二放大支路分别生成的第一信号和第二信号输入至90°电桥，并由连接90°电桥的水平极化天线和垂直极化天线进行射频信号输出。本发明通过控制第一移相控制模块和第二移相控制模块的移相量输出、控制第一放大器模块和第二放大器模块的工作状态，以实现圆极化波、水平极化、垂直极化、线极化、左旋圆极化和右旋圆极化输出控制，实现低成本的多极化选择，解决了水平极化、垂直极化时功率损失的问题。
The invention discloses a microwave power amplifier capable of realizing polarization mode selection. The microwave power amplifier includes a power divider, a first amplification branch composed of a first phase-shifting control module and a first amplifier module, and a second The second amplification branch formed by the phase control module and the second amplifier module and the 90° electric bridge are output to the first amplification branch and the second signal generated by the second amplification branch through the power divider and input to the 90° electric bridge, and the radio frequency signal is output by the horizontally polarized antenna and the vertically polarized antenna connected to the 90° electric bridge. The present invention controls the output of the phase shifting amount of the first phase shifting control module and the second phase shifting control module, and controls the working states of the first amplifier module and the second amplifier module to realize circularly polarized waves, horizontally polarized waves, and vertically polarized waves. Polarization, linear polarization, left-handed circular polarization and right-handed circular polarization output control, realize low-cost multi-polarization selection, and solve the problem of power loss in horizontal polarization and vertical polarization.
Description
Technical Field
The invention relates to the technical field of microwave power amplifiers, in particular to a microwave power amplifier capable of realizing polarization mode selection.
Background
In multi-function electronic system applications, orthogonal sets of two antennas are often employed to implement multi-polarization functions. When the power is completely transmitted to the horizontally polarized antenna, the system works in horizontal polarization; when all power is transmitted to the vertical polarized antenna, the system works in vertical polarization; when the amplitude of the horizontal polarization signal is the same as that of the vertical polarization signal and the phase difference is 0 degrees or 180 degrees, the system works in oblique polarization; when the amplitude of the signals of the horizontal polarization is the same as that of the signals of the vertical polarization, and the phase difference is +/-90 degrees, the system works in circular polarization.
Polarization variation is conventionally achieved by adding a phase shifter before each transmit channel. In this way, when the power is in horizontal polarization, the power is not in vertical polarization, and when the power is in vertical polarization, the power is not in horizontal polarization, so that expensive power amplification resources are not fully utilized.
The paper full polarization wave polarization network design is mainly applied to a receiving system with good linearity. In high power transmission systems, since the power amplifier is often operated in the depth class AB, even class C, its gain varies greatly with the variation of the input signal amplitude, and any polarization variation described herein cannot be achieved with the network herein.
The patent 'a control device for realizing the rapid polarization change of electromagnetic waves', namely adding an adjustable attenuator under the application of the traditional polarization change mode, is used for realizing the selection of any polarization mode. This approach allows more polarization mode selections than the most traditional variable polarization approaches. In practical applications, it is still only possible to achieve no power capability loss in the on-line polarization and circular polarization modes, and other polarization modes are still achieved by reducing the output power of a certain solid-state power amplifier, and this application also reduces the overall efficiency of the system.
Therefore, how to provide a microwave power amplifier that realizes polarization mode change without power or efficiency loss is a technical problem that needs to be solved.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide a microwave power amplifier capable of realizing polarization mode selection, and aims to solve the technical problem that the system efficiency is reduced when polarization change is realized at present.
In order to achieve the above objective, the present invention provides a microwave power amplifier capable of realizing polarization mode selection, which comprises a power divider, a first phase-shift control module, a second phase-shift control module, a first amplifier module, a second amplifier module and a 90 ° bridge; wherein:
the input end of the power divider receives a radio frequency input signal, the first output end of the power divider is connected with the first amplifier module through the first phase-shift control module to form a first amplifying branch, and the second output end of the power divider is connected with the second amplifier module through the second phase-shift control module to form a second amplifying branch;
a first input end of the 90-degree bridge receives a first signal generated by the first amplifying branch, a second input end of the 90-degree bridge receives a second signal generated by the second amplifying branch, and the 90-degree bridge performs polarization selection control output on an output signal of an output end according to the phase shift quantity of the first signal and the phase shift quantity of the second signal;
the first radio frequency output end of the 90-degree electric bridge is connected with a horizontally polarized antenna, and the second radio frequency output end of the 90-degree electric bridge is connected with a vertically polarized antenna.
Optionally, the first phase-shift control module includes a first phase shifter and a first phase-shift control circuit connected to the first phase shifter, the second phase-shift control module includes a second phase shifter and a second phase-shift control circuit connected to the second phase shifter, and the first phase-shift control circuit and the second phase-shift control circuit respectively control phase-shift angles of the first phase shifter and the second phase shifter to realize horizontal polarized wave output, vertical polarized wave output or linear polarized output.
Optionally, when the first phase shift control module controls the phase shift angle of the first phase shifter to be 90 ° and the second phase shift control module controls the phase shift angle of the second phase shifter to be 0 °, the output power of the first signal and the output power of the second signal are synthesized and then output from the second radio frequency output end;
when the first phase shift control module controls the phase shift angle of the first phase shifter to be 0 degrees and the second phase shift control module controls the phase shift angle of the second phase shifter to be 90 degrees, the output power of the first signal and the output power of the second signal are synthesized and then output from the first radio frequency output end.
Optionally, when the phase shift angle of the first phase shifter controlled by the first phase shift control module and the phase shift angle of the second phase shifter controlled by the second phase shift control module are the same, the amplitudes and phases of the output signals of the first radio frequency output end and the second radio frequency output end are the same;
when the first phase shift control module controls the phase shift angle of the first phase shifter and the second phase shift control module controls the phase shift angle of the second phase shifter to be 180 degrees different, the amplitude of the output signals of the first radio frequency output end and the second radio frequency output end are the same, and the phase difference is 180 degrees.
Optionally, the first amplifier module includes a first amplifier and a first amplifier control circuit connected to the first amplifier, the second amplifier module includes a second amplifier and a second amplifier control circuit connected to the second amplifier, and the first amplifier control circuit and the second amplifier control circuit respectively control the working states of the first amplifier and the second amplifier to realize left-hand circular polarization output or right-hand circular polarization output.
Optionally, when the first amplifier control circuit controls the first amplifier to be turned off and the second amplifier control circuit controls the second amplifier to work, the output power of the second signal is averagely distributed to the first radio frequency output end and the second radio frequency output end through a 90-degree bridge so as to realize left-hand circular polarization output;
when the first amplifier control circuit controls the first amplifier to work and the second amplifier control circuit controls the second amplifier to be closed, the output power of the first signal is evenly distributed to the first radio frequency output end and the second radio frequency output end through the 90-degree bridge so as to realize right-hand circular polarization output.
Optionally, the left-hand circularly polarized output is that the radio frequency signal phase of the second radio frequency output end relative to the first radio frequency output end is-90 degrees; the right-hand circularly polarized output is that the phase of the radio frequency signal of the second radio frequency output end relative to the first radio frequency output end is-90.
The invention provides a microwave power amplifier capable of realizing polarization mode selection, which comprises a power divider, a first amplifying branch circuit formed by a first phase-shifting control module and a first amplifier module, a second amplifying branch circuit formed by a second phase-shifting control module and a second amplifier module and a 90-degree electric bridge, wherein a first signal and a second signal which are respectively generated by the power divider and output to the first amplifying branch circuit and the second amplifying branch circuit are input to the 90-degree electric bridge, and a radio-frequency signal is output by a horizontal polarized antenna and a vertical polarized antenna which are connected with the 90-degree electric bridge. The invention realizes the output control of circularly polarized wave, horizontal polarization, vertical polarization, linear polarization, left-hand circular polarization and right-hand circular polarization by controlling the phase shift output of the first phase shift control module and the second phase shift control module and controlling the working states of the first amplifier module and the second amplifier module, realizes the multi-polarization selection with low cost and solves the problem of power loss during horizontal polarization and vertical polarization.
Drawings
FIG. 1 is a schematic diagram of a microwave power amplifier that can implement polarization mode selection;
FIG. 2 is a schematic block diagram of the simultaneous operation simulation of two power amplifiers;
FIG. 3 is a schematic diagram showing the variation of the output power and the phase difference of the ports along with the phase difference of the phase shifter when two power amplifiers work simultaneously;
fig. 4 is a schematic diagram showing the change of the output power and the phase difference of the port along with the phase difference of the phase shifter when one power amplifier is turned off.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 1 | Power divider | 6 | 90-degree bridge |
| 2 | |
7 | Phase |
| 3 | Phase shifter 2 | 8 | Phase shift control circuit 2 |
| 4 | |
9 | |
| 5 | Amplifier 2 | 10 | Amplifier control circuit 2 |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, based on the embodiments of the invention, which would be apparent to one of ordinary skill in the art without inventive effort are within the scope of the invention.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary that the technical solutions are based on the fact that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination does not exist and is not within the scope of protection claimed by the invention.
In multi-function electronic system applications, orthogonal sets of two antennas are often employed to implement multi-polarization functions. When the power is completely transmitted to the horizontally polarized antenna, the system works in horizontal polarization; when all power is transmitted to the vertical polarized antenna, the system works in vertical polarization; when the amplitude of the horizontal polarization signal is the same as that of the vertical polarization signal and the phase difference is 0 degrees or 180 degrees, the system works in oblique polarization; when the amplitude of the signals of the horizontal polarization is the same as that of the signals of the vertical polarization, and the phase difference is +/-90 degrees, the system works in circular polarization.
Polarization variation is conventionally achieved by adding a phase shifter before each transmit channel. In this way, when the power is in horizontal polarization, the power is not in vertical polarization, and when the power is in vertical polarization, the power is not in horizontal polarization, so that expensive power amplification resources are not fully utilized.
The paper full polarization wave polarization network design is mainly applied to a receiving system with good linearity. In high power transmission systems, since the power amplifier is often operated in the depth class AB, even class C, its gain varies greatly with the variation of the input signal amplitude, and any polarization variation described herein cannot be achieved with the network herein.
The patent 'a control device for realizing the rapid polarization change of electromagnetic waves', namely adding an adjustable attenuator under the application of the traditional polarization change mode, is used for realizing the selection of any polarization mode. This approach allows more polarization mode selections than the most traditional variable polarization approaches. In practical applications, it is still only possible to achieve no power capability loss in the on-line polarization and circular polarization modes, and other polarization modes are still achieved by reducing the output power of a certain solid-state power amplifier, and this application also reduces the overall efficiency of the system.
Therefore, how to provide a microwave power amplifier that realizes polarization mode change without power or efficiency loss is a technical problem that needs to be solved.
To solve this problem, various embodiments of the microwave power amplifier of the present invention are presented that can achieve polarization mode selection. The microwave power amplifier capable of realizing polarization mode selection provided by the invention realizes circular polarized wave, horizontal polarization, vertical polarization, linear polarization, left-hand circular polarization and right-hand circular polarization output control by controlling the phase shift output of the first phase shift control module and the second phase shift control module and controlling the working states of the first amplifier module and the second amplifier module, realizes low-cost multi-polarization selection and solves the problem of power loss during horizontal polarization and vertical polarization.
The embodiment provides a microwave power amplifier capable of realizing polarization mode selection, which comprises a power divider, a first phase-shift control module, a second phase-shift control module, a first amplifier module, a second amplifier module and a 90-degree bridge.
Specifically, the input end of the power divider receives a radio frequency input signal, the first output end of the power divider is connected with the first amplifier module through the first phase-shift control module to form a first amplifying branch, and the second output end of the power divider is connected with the second amplifier module through the second phase-shift control module to form a second amplifying branch;
a first input end of the 90-degree bridge receives a first signal generated by the first amplifying branch, a second input end of the 90-degree bridge receives a second signal generated by the second amplifying branch, and the 90-degree bridge performs polarization selection control output on an output signal of an output end according to the phase shift quantity of the first signal and the phase shift quantity of the second signal;
the first radio frequency output end of the 90-degree bridge is connected with the horizontally polarized antenna, and the second radio frequency output end of the 90-degree bridge is connected with the vertically polarized antenna.
In some embodiments, the first phase shift control module includes a first phase shifter and a first phase shift control circuit connected to the first phase shifter, and the second phase shift control module includes a second phase shifter and a second phase shift control circuit connected to the second phase shifter, the first phase shift control circuit and the second phase shift control circuit controlling phase shift angles of the first phase shifter and the second phase shifter, respectively, to achieve a horizontal polarized wave output, a vertical polarized wave output, or a linear polarized output.
It is easy to understand that when the first phase shift control module controls the phase shift angle of the first phase shifter to be 90 ° and the second phase shift control module controls the phase shift angle of the second phase shifter to be 0 °, the output power of the first signal and the output power of the second signal are synthesized and then output from the second radio frequency output end; when the first phase shift control module controls the phase shift angle of the first phase shifter to be 0 degrees and the second phase shift control module controls the phase shift angle of the second phase shifter to be 90 degrees, the output power of the first signal and the output power of the second signal are synthesized and then output from the first radio frequency output end.
Meanwhile, when the first phase shift control module controls the phase shift angle of the first phase shifter and the second phase shift control module controls the phase shift angle of the second phase shifter to be the same, the amplitude and the phase of the output signals of the first radio frequency output end and the second radio frequency output end are the same; when the first phase shift control module controls the phase shift angle of the first phase shifter and the second phase shift control module controls the phase shift angle of the second phase shifter to be 180 degrees different, the amplitude of the output signals of the first radio frequency output end and the second radio frequency output end are the same, and the phase difference is 180 degrees.
In another embodiment, the first amplifier module includes a first amplifier and a first amplifier control circuit connected to the first amplifier, the second amplifier module includes a second amplifier and a second amplifier control circuit connected to the second amplifier, and the first amplifier control circuit and the second amplifier control circuit respectively control the working states of the first amplifier and the second amplifier to realize a left-hand circular polarization output or a right-hand circular polarization output.
It is easy to understand that when the first amplifier control circuit controls the first amplifier to be turned off and the second amplifier control circuit controls the second amplifier to work, the output power of the second signal is evenly distributed to the first radio frequency output end and the second radio frequency output end through the 90-degree bridge, so as to realize left-hand circular polarization output; when the first amplifier control circuit controls the first amplifier to work and the second amplifier control circuit controls the second amplifier to be closed, the output power of the first signal is evenly distributed to the first radio frequency output end and the second radio frequency output end through the 90-degree bridge so as to realize right-hand circular polarization output.
The left-hand circularly polarized output is that the phase of the radio frequency signal of the second radio frequency output end relative to the first radio frequency output end is-90 degrees; the right-hand circularly polarized output is that the phase of the radio frequency signal of the second radio frequency output end relative to the first radio frequency output end is-90.
For easy understanding, the present embodiment proposes a specific example of a microwave power amplifier that can achieve polarization mode selection, and is specifically as follows:
in this embodiment, a power amplifier implementing polarization mode selection through a bridge and a low-power phase shifter is provided, and the specific principle is as follows:
as shown in fig. 1, the power amplifier circuit mainly includes: the power divider (1), the phase shifter 1 (2), the phase shifter 2 (3), the amplifier 1 (4), the amplifier 2 (5), the 90-degree bridge (6), the phase shift control circuit 1 (7), the phase shift control circuit 2 (8), the amplifier control circuit 1 (9) and the amplifier control circuit 2 (10).
One path of the bridge is output to the horizontal polarized antenna, and the other path is output to the vertical polarized antenna. When only one end of the bridge connected with the horizontal polarized antenna has power output, the system outputs horizontal polarized waves; when only one end of the bridge connected with the vertical polarized antenna has power output, the system outputs vertical polarized waves; when the output amplitudes of the two ends of the bridge are the same and the phase difference is 0 degree or 180 degrees, polarized waves are output from the system output line; when the output amplitude of the two ends of the bridge is the same and the phase difference is +/-90 degrees, the system outputs circularly polarized waves.
The invention can control the phase shift quantity of the phase shifter 1 (3) and the phase shifter 2 (4) through the phase shift control circuit 1 (7) and the phase shift control circuit 2 (8) to realize the output signal amplitude and the phase of the output port of the 90-degree bridge (6) and realize the horizontal polarization output, the vertical polarization output and the linear polarization output of the system.
The invention can control the working states of the amplifier 1 (4) and the amplifier 2 (5) through the amplifier control circuit 1 (9) and the amplifier control circuit 2 (10), and realize the left-hand circular polarization output and the right-hand circular polarization output of the system, at the moment, the system has no efficiency loss although the power output capacity is lost, and the system works in a saturated state regardless of the working state of the amplifier 1 (4) or the amplifier 2 (5).
When the phase shift angle of the phase shifter 1 (2) is 90 degrees and the phase shift angle of the phase shifter 2 (3) is 0 degrees, when the amplifier 1 (4) and the amplifier 2 (5) are normally started to work, the output power of the amplifier 1 (4) and the output power of the amplifier 2 (5) are synthesized and then output from the radio frequency output port 2 of the 90-degree bridge (6). When the phase shift angle of the phase shifter 2 (1) is 0 DEG and the phase shift angle of the phase shifter 2 (3) is 90 DEG, the output power of the amplifier 1 (4) and the output power of the amplifier 2 (5) are synthesized and then output from the radio frequency output port 1 of the 90 DEG bridge (6) when the amplifier 1 (4) and the amplifier 2 (5) are normally started to work. In this way, it is possible to realize a synthetic horizontally polarized wave or a synthetic vertically polarized wave output.
When the phases of the phase shifter 1 (2) and the phase shifter 2 (3) are identical, the output signals of the output port 1 and the output port 2 of the 90 DEG bridge (6) have the same amplitude and the same phase. When the phase of the phase shifter 1 (2) and the phase shifter 2 (3) are 180 degrees different, the output signals of the output port 1 and the output port 2 of the 90-degree bridge (6) have the same amplitude and 180 degrees different in phase, and the two conditions are output to the dual-polarized antenna to realize linear polarization output of the system.
If the amplifier 1 (4) is turned off by the amplifier control circuit 1 (9), only the amplifier 2 (5) is operated at this time, and the output power of the amplifier is equally distributed to the rf output 1 port and the rf output 2 port through the 90 ° bridge (6), and the phase of the rf output 2 port signal is-90 ° with respect to the rf output 1 port signal. If the amplifier 2 (5) is turned off by the amplifier control circuit 2 (10), only the amplifier 1 (4) is operated at this time, and the output power of the amplifier is equally distributed to the rf output 1 port and the rf output 2 port through the 90 ° bridge (6), and the phase of the rf output 1 port signal is-90 ° with respect to the rf output 2 port signal. The two conditions are output to the dual-polarized antenna to realize the left-hand circular polarization output and the right-hand circular polarization output of the system.
To verify the correctness of the embodiment, a model is used to simulate the circuit. The simulation principle block diagram is shown in fig. 2, an ideal model is adopted, and the output power of a single power amplifier is 100W. For convenience of simulation, only one phase shifter is adopted in the simulation of the phase shifters 1 (2) and 2 (3), and the phase shifting value can be set to be negative.
When the two paths of power amplifiers work simultaneously, simulation results of the output power and the phase difference of the two ends along with the phase change of the phase shifter are shown in fig. 3. As can be seen from the figure, when the phase difference of the phase shifter is-90 degrees, the phase difference of the phase shifter is output from the port 3, and when the phase difference of the phase shifter is 90 degrees, the phase difference of the phase shifter is output from the port 2, so that the phase difference of the phase shifter is output from horizontal polarization or vertical polarization after the phase difference of the phase shifter is synthesized. When the phase difference of the phase shifter is 180 degrees, the output power of the two ends is the same, and the phase difference is 180 degrees; when the phase difference of the phase shifter is 0 DEG, the output power of the two ends is the same, and the phase difference is 0 DEG; both cases achieve linear polarization output.
The gain of AMP2 can be set to-30 dB by closing one power amplifier, the simulation result is shown in figure 4, the output power of two ports is the same, the phase difference is 90 degrees, the system can synthesize circular polarization, and the working power amplifier is still in a saturated working state, so that no efficiency loss exists.
The foregoing description is only of the preferred embodiments of the invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalent structure or equivalent flow scheme disclosed in the specification and drawings, or any other related art, directly or indirectly, as desired.
Claims (5)
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| CN204596982U (en) * | 2015-05-12 | 2015-08-26 | 西安克拉克通信科技有限公司 | A kind of low clearance antenna for satellite communication in motion electronic pole-changing gasifying device |
| CN113471686A (en) * | 2021-05-27 | 2021-10-01 | 南京软赫波誉电子科技有限公司 | Active integrated electrically-modulated polarized transmitting-receiving panel antenna |
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| JP2019050521A (en) * | 2017-09-11 | 2019-03-28 | 株式会社東芝 | Antenna apparatus, wireless communication apparatus, and signal transmission method |
| CN109541555A (en) * | 2018-11-15 | 2019-03-29 | 南京长峰航天电子科技有限公司 | One kind is for realizing electromagnetic wave fast variable polarization control device |
| CN113507290B (en) * | 2021-07-06 | 2022-12-09 | 中国电子科技集团公司第三十八研究所 | Bidirectional multi-polarization mode transceiving system and transceiving method thereof |
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| CN204596982U (en) * | 2015-05-12 | 2015-08-26 | 西安克拉克通信科技有限公司 | A kind of low clearance antenna for satellite communication in motion electronic pole-changing gasifying device |
| CN113471686A (en) * | 2021-05-27 | 2021-10-01 | 南京软赫波誉电子科技有限公司 | Active integrated electrically-modulated polarized transmitting-receiving panel antenna |
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