CN218412878U

CN218412878U - Transmit-receive switch system capable of realizing low-noise gain amplification

Info

Publication number: CN218412878U
Application number: CN202222470063.6U
Authority: CN
Inventors: 爨志林
Original assignee: SICHUAN JIULI MICROWAVE CO Ltd
Current assignee: SICHUAN JIULI MICROWAVE CO Ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-01-31
Anticipated expiration: 2032-09-19

Abstract

The utility model discloses a can realize receiving and dispatching switching system of low noise gain amplification, including transmission branch road module, transmission branch road module's output is connected with the receiving branch road module, and transmits branch road module and is provided with the coupler with the junction of receiving branch road module, the output of receiving branch road module is connected with the receiving and dispatching switch, the output of receiving and dispatching switch is connected with the receiving channel, transmission branch road module includes PIN diode switch, PIN diode switch's input is connected with power amplifier system and control drive, the output that moves the looks ware is connected with the power combiner. According to the receiving and transmitting switch system capable of achieving low-noise gain amplification, a receiving channel enables signals from a receiving and transmitting switch to sequentially pass through a low-noise amplification module, a phase shifter and other modules, and finally the signals are output from a final-stage TR component through a receiving and outputting module and are sent to a complete machine for use, so that all equipment of the whole MST radar can normally and stably work in a plateau area, and low-noise gain amplification is achieved.

Description

Transmit-receive switch system capable of realizing low-noise gain amplification

Technical Field

The utility model relates to a receiving and dispatching switch technical field specifically is a receiving and dispatching switching system that can realize low noise gain and amplify.

Background

The MST radar is very important equipment in a Qinghai-Tibet plateau partial system, and can acquire atmospheric dynamics characteristics of a plurality of atmospheric layers (a troposphere, a stratosphere and an intermediate layer-low-heat layer) of an upper atmosphere of a special terrain area of the Qinghai-Tibet plateau, such as three-dimensional atmospheric wind fields, fluctuation, turbulence and the like, and international unique and precious actual measurement data of process observation. The MST radar adopts a full-digital two-dimensional conformal phased array system, and the main equipment comprises an antenna subsystem, a T/R component subsystem, a comprehensive feed subsystem and the like. The T/R component subsystem amplifies an input excitation signal to required power through a transmitting link and amplifies an input receiving signal through a receiving channel to realize low-noise gain amplification. Meanwhile, the receiving and transmitting time-sharing work is realized through the receiving and transmitting switch, and the control of the polarization mode of the antenna of the receiving and transmitting port is realized through controlling the phase shifter.

The power amplifier module is used as a core component in a radar, communication and navigation system, and the size of the transmitting power directly determines the acting distance, the anti-interference capability and the communication quality of the system. The VHF band and lower bands are limited by the tolerance level of the device, the output power of a single power amplification chip is relatively small, and in order to obtain higher power output and smaller in-band flatness, a more stable transmit-receive switch is often required.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can realize receiving and dispatching switching system that low noise gain is enlargied to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a transmit-receive switching system capable of low noise gain amplification, comprising:

the transmitting branch circuit module comprises a transmitting branch circuit module, wherein the output end of the transmitting branch circuit module is connected with a receiving branch circuit module, a coupler is arranged at the joint of the transmitting branch circuit module and the receiving branch circuit module, the output end of the receiving branch circuit module is connected with a transceiving switch, the output end of the transceiving switch is connected with a receiving channel, the transmitting branch circuit module comprises a PIN diode switch, and the input end of the PIN diode switch is connected with a power amplifier system and a control driver;

the amplitude limiter is connected to the output end of the receiving and transmitting switch, the output end of the amplitude limiter is connected with a low-noise amplifier module, the output end of the low-noise amplifier module is connected with a phase shifter, and the output end of the phase shifter is connected with a power combiner;

the output end of the band-pass filter is connected with an amplifier, the output end of the amplifier is respectively connected with an amplitude debugging module, a phase debugging module and a switch, and the output end of the switch is connected with a receiving output module.

Preferably, the receiving branch module comprises two groups of PIN diode switches and a control driver, and the two groups of PIN diode switches are connected in series.

Preferably, the transmitting branch module, the receiving branch module, the transceiving switch and the receiving channel are sequentially connected in series, and the coupler is electrically connected with the transmitting branch module and the receiving branch module.

Preferably, the transceiver switches are provided with two groups, and the two groups of transceiver switches are electrically connected with the power combiner through the amplitude limiter, the low-noise amplifier module and the phase shifter respectively.

Preferably, the power combiner is electrically connected to the band-pass filter, and the band-pass filter is electrically connected to the amplitude debugging module through the amplifier.

Preferably, the amplitude debugging module is electrically connected with the phase debugging module through the amplifier, and the phase debugging module is electrically connected with the switch through the two groups of amplifiers.

Preferably, the switch is electrically connected with the receiving and outputting module.

Compared with the prior art, the utility model provides a can realize receiving and dispatching switching system that low noise gain is enlargied possesses following beneficial effect:

1. the utility model discloses a set up a set of PIN diode switch in the transmission branch road module, and set up two sets of PIN diode switch in the receiving branch road module, thereby realize that the transmission branch road end adopts the first order switch to keep apart, and the receiving branch road end adopts the two-stage switch to keep apart, and when guaranteeing the transmission state like this, the output power of receiving terminal is enough little, and the isolation can reach 70dB, thereby reach the purpose of protection receiving channel, and under the control driven work schedule, the receiving and dispatching switch can realize the timesharing work;

2. the utility model discloses a set up the receiving channel and pass through modules such as low noise amplifier module, phase shifter in proper order to come from the signal of receiving and dispatching switch, finally export by last stage TR subassembly through receiving output module, give the complete machine to use, make all equipment of whole MST radar normally stable work in plateau district, realize the gain of low noise and enlarge;

3. the utility model discloses a set up amplitude debugging module and be used for adjusting channel amplitude uniformity, phase place debugging module is used for adjusting the phase place uniformity between the passageway to band pass filter in the receiving channel can guarantee the suppression of taking the external noise.

Drawings

FIG. 1 is a schematic view of the overall flow of the present invention;

fig. 2 is a schematic flow chart of the transmitting branch module of the present invention;

fig. 3 is a schematic flow chart of the receiving branch module of the present invention;

fig. 4 is a schematic flow chart of the receiving channel of the present invention;

fig. 5 is a schematic flow chart of the power combiner of the present invention.

In the figure: 1. a transmitting branch module; 2. a receiving branch module; 3. a coupler; 4. a receiving channel; 5. A transmit-receive switch; 6. a power amplifier system; 7. a PIN diode switch; 8. controlling the driving; 9. an amplitude limiter; 10. A low noise amplifier module; 11. a phase shifter; 12. a power combiner; 13. a band-pass filter; 14. an amplifier; 15. an amplitude debugging module; 16. a phase debugging module; 17. a switch; 18. and a receiving output module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 3, a transmit-receive switching system capable of achieving low-noise gain amplification includes: the transmitting branch circuit module 1, the output end of the transmitting branch circuit module 1 is connected with the receiving branch circuit module 2, a coupler 3 is arranged at the joint of the transmitting branch circuit module 1 and the receiving branch circuit module 2, the receiving branch circuit module 2 comprises two sets of PIN diode switches 7 and a control drive 8, the two sets of PIN diode switches 7 are mutually connected in series, the output end of the receiving branch circuit module 2 is connected with a receiving switch 5, the output end of the receiving switch 5 is connected with a receiving channel 4, the transmitting branch circuit module 1, the receiving branch circuit module 2, the receiving switch 5 and the receiving channel 4 are sequentially connected in series, the coupler 3 is electrically connected with the transmitting branch circuit module 1 and the receiving branch circuit module 2, the transmitting branch circuit module 1 comprises a PIN diode switch 7, the input end of the PIN diode switch 7 is connected with a power amplifier system 6 and a control drive 8, the one set of the PIN diode switches 7 is arranged in the transmitting branch circuit module 1, the two sets of the PIN diode switches 7 in the receiving branch circuit module 2, thereby realizing the one-level switch isolation, the two-level switch isolation is adopted in the receiving branch circuit isolation, thereby ensuring that the transmitting branch circuit module has a sufficiently small output power time sharing, the time sharing of the receiving branch circuit module can reach 70dB, thereby achieving the purpose of protecting the receiving channel 4, and realizing the time sequence work of the control drive control switch 5, and realizing the time sequence drive.

As shown in fig. 4 and 5, a transmit/receive switching system capable of achieving low noise gain amplification includes: the amplitude limiter 9 is connected to the output end of the transceiver switch 5, the output end of the amplitude limiter 9 is connected with a low-noise amplifier module 10, the output end of the low-noise amplifier module 10 is connected with a phase shifter 11, the output end of the phase shifter 11 is connected with a power combiner 12, the transceiver switch 5 is provided with two groups, the two groups of transceiver switches 5 are electrically connected with the power combiner 12 through the amplitude limiter 9, the low-noise amplifier module 10 and the phase shifter 11 respectively, signals from the transceiver switches 5 sequentially pass through the low-noise amplifier module 10, the phase shifter 11 and other modules through the receiving channel 4, and are finally output from a final stage TR component through the receiving output module 18 and are sent to the whole MST radar for use, so that all equipment of the whole MST radar normally and stably works in a plateau area, and low-noise gain amplification is achieved; the band-pass filter 13 is connected to the output end of the power combiner 12, the output end of the band-pass filter 13 is connected to the amplifier 14, the output end of the amplifier 14 is connected to the amplitude debugging module 15, the phase debugging module 16 and the switch 17 respectively, the output end of the switch 17 is connected to the receiving output module 18, the power combiner 12 is electrically connected to the band-pass filter 13, the band-pass filter 13 is electrically connected to the amplitude debugging module 15 through the amplifier 14, the amplitude debugging module 15 is electrically connected to the phase debugging module 16 through the amplifier 14, the phase debugging module 16 is electrically connected to the switch 17 through two groups of amplifiers 14, the switch 17 is electrically connected to the receiving output module 18, the amplitude debugging module 15 is arranged to adjust the amplitude consistency of the channels, the phase debugging module 16 is arranged to adjust the phase consistency between the channels, and the band-pass filter 13 in the receiving channel 4 can ensure the suppression of the out-of-band noise.

The working principle is as follows: when the receiving-transmitting switch system capable of realizing low-noise gain amplification is used, firstly, the receiving-transmitting switch 5 realizes that the transmitting branch end adopts one-stage switch isolation and the receiving branch end adopts two-stage switch isolation through the PIN diode switch 7, so that when the transmitting state is ensured, the output power of the receiving end is small enough, and the isolation degree can reach 70dB, thereby achieving the purpose of protecting the receiving channel 4;

secondly, the receiving channel 4 passes signals from the transceiving switch 5 through a low noise amplifier module 10, a phase shifter 11, a power combiner 12, a band-pass filter 13, an amplifier 14, an amplitude debugging module 15, an amplifier 14, a phase debugging module 16, two groups of amplifiers 14 and a switch 17 in sequence, and finally the signals are output from a final stage TR component through a receiving output module 18 and are sent to the whole machine for use;

then, a new solid-state power amplifier debugging method is used based on the transceiving switch system: independent pads are arranged around the VHF frequency band high-power amplification tube; cutting the copper sheet into squares, adhering the squares on the insulating column, and manufacturing a debugging rod; powering up a grid electrode of the power amplifier tube, testing and debugging input standing waves by using the manufactured debugging rod to ensure that the input impedance of the power amplifier tube is completely matched with the link impedance, and then adding a drain voltage to call out a static current according to requirements; powering up to enable the product to be in a normal working state, adjusting to a frequency point with poor index, placing a copper sheet end of a debugging rod on an independent bonding pad, and realizing matching with a VHF frequency band high-power amplification tube by adjusting the area of copper left at the output end of the VHF frequency band power amplification tube so as to achieve optimal matching and output optimal power;

and finally, the normal use of the MST radar in the Qinghai-Tibet plateau division system is met through the transceiving switch system and the solid-state power amplifier debugging method.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A transmit-receive switching system capable of low noise gain amplification, comprising:

the transmission branch circuit comprises a transmission branch circuit module (1), wherein the output end of the transmission branch circuit module (1) is connected with a receiving branch circuit module (2), a coupler (3) is arranged at the joint of the transmission branch circuit module (1) and the receiving branch circuit module (2), the output end of the receiving branch circuit module (2) is connected with a receiving and transmitting switch (5), the output end of the receiving and transmitting switch (5) is connected with a receiving channel (4), the transmission branch circuit module (1) comprises a PIN diode switch (7), and the input end of the PIN diode switch (7) is connected with a power amplification system (6) and a control drive (8);

the amplitude limiter (9) is connected to the output end of the transceiving switch (5), the output end of the amplitude limiter (9) is connected with a low-noise amplifier module (10), the output end of the low-noise amplifier module (10) is connected with a phase shifter (11), and the output end of the phase shifter (11) is connected with a power combiner (12);

band-pass filter (13), it is connected the output of power combiner (12), the output of band-pass filter (13) is connected with amplifier (14), and the output of amplifier (14) is connected with amplitude debugging module (15), phase debugging module (16) and switch (17) respectively, the output of switch (17) is connected with and receives output module (18).

2. The switch system for realizing low-noise gain amplification of claim 1, wherein the receiving branch module (2) comprises two sets of PIN diode switches (7) and a control driver (8), and the two sets of PIN diode switches (7) are connected in series.

3. The transceiver switch system capable of achieving low-noise gain amplification according to claim 1, wherein the transmitting branch module (1), the receiving branch module (2), the transceiver switch (5) and the receiving channel (4) are sequentially connected in series, and the coupler (3) is electrically connected to the transmitting branch module (1) and the receiving branch module (2).

4. The transceiver switch system capable of achieving low-noise gain amplification according to claim 1, wherein two sets of transceiver switches (5) are provided, and the two sets of transceiver switches (5) are electrically connected to the power combiner (12) through the limiter (9), the low-noise amplifier module (10), and the phase shifter (11), respectively.

5. The switch system of claim 1, wherein the power combiner (12) is electrically connected to the band-pass filter (13), and the band-pass filter (13) is electrically connected to the amplitude modulation module (15) through the amplifier (14).

6. The switch system of claim 1, wherein the amplitude modulation module (15) is electrically connected to the phase modulation module (16) through the amplifiers (14), and the phase modulation module (16) is electrically connected to the switches (17) through two sets of amplifiers (14).

7. The switch system of claim 1, wherein the switch (17) is electrically connected to the receive output module (18).