Radar and confrontation dual-mode duplex multifunctional frequency conversion assembly
A multi-functional, radar technology, applied to radio wave measurement systems, instruments, etc., can solve the problems of high component complexity and lack of duplex, and achieve the effect of reducing complexity, simple structure, and improving utilization rate
Active Publication Date: 2020-06-23
扬州船用电子仪器研究所
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Problems solved by technology
[0003]
Due to the inconsistency of the requirements of the radar and the electronic countermeasure system for the intermediate frequency signal, the frequency conversion components of the radar and the countermeasure system are currently supported at the same time, and there are the following problems: (1) The time-sharing work mode is adopted, and the channel gain bandwidth is adjusted according to specific requirements. Workability; (2) Two independent frequency conversion channels are used to realize complete frequency conversion functions, and the components are highly complex
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[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0029] combine figure 1 , the present invention is a multifunctional frequency conversion assembly for radar and anti-dual-mode duplexing, comprising a delay circuit 1, a down-conversion circuit 2, a transmission drive circuit 3 and a switch matrix 4;
[0030] The delay circuit 1 is used for signal delay and gain compensation;
[0031] The down-conversion circuit 2 is used to down-convert the radio frequency signal from the switch matrix 4, and output the radar intermediate frequency signal and the electronic countermeasure intermediate frequency signal;
[0032] The emission drive circuit 3 is used to perform numerical control phase shifting and drive amplification processing on external excitation signals;
[0033] The switch matrix 4 controls the on-off state of each port according to the working state of the components.
[0034...
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The invention discloses a radar and confrontation dual-mode duplex multifunctional frequency conversion assembly. The frequency conversion assembly comprises a time delay circuit, a switch matrix, a down-conversion circuit and an emission drive circuit. In a receiving state working mode, a radio frequency signal is input by the time delay circuit, is subjected to numerical control time delay and gain compensation and then is transmitted to the down-conversion circuit by the switch matrix, and a radar intermediate frequency signal and an electronic countermeasure intermediate frequency signal are output. In a transmitting state working mode, a radio frequency signal is input by the transmitting driving circuit, is subjected to numerical control phase shift and driving amplification, then istransmitted to the time delay circuit by the switch matrix, and then is subjected to numerical control time delay and gain compensation to output a transmitting intermediate frequency signal. In a self-checking state working mode, a radio frequency signal is input by the emission driving circuit, is subjected to numerical control phase shift and driving amplification and then is transmitted to the down-conversion circuit through the switch matrix, and a radar intermediate frequency signal and an electronic countermeasure intermediate frequency signal are output. The assembly is simple in structure and high in integration level, has three functions of receiving, transmitting and self-checking, and improves the universality and utilization efficiency of the assembly.
Description
technical field [0001] The invention relates to the technical field of radar and countermeasures, in particular to a radar and countermeasure dual-mode duplex multifunctional frequency conversion assembly. Background technique [0002] The frequency conversion component can convert the high-frequency signal of the RF front-end into an intermediate frequency signal that can be processed by the back-end digital receiver, or convert the digital baseband signal into an RF signal and transmit it to the RF front-end for emission. It is a key device in radar and countermeasure systems. With the increasing demand for microwave system integration, miniaturization and multi-function, the requirements for generalization and miniaturization of frequency conversion components are also gradually increasing. The radar system and the electronic countermeasure system have quite different requirements for intermediate frequency signals, which lie in the following points: (1) the bandwidth dif...
Claims
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IPC IPC(8): G01S7/36
CPCG01S7/36Y02A90/10
Inventor 张兴稳柴俊王勇韦炜孙彪
Owner 扬州船用电子仪器研究所