The Key Components Of The X-band T / R Module

This topic comes from Chengdu Sine Science and Technology LTD., it is a advanced research topic for the development and production of T/R module, and it also belongs to the research of phased-array radar. There are thousands of T/R modules in the large phased-array radar. The module contains the launch channel of high efficiency level, and receiver channel of high gain and low noise, and it includes Low-Noise Amplifier, Digital Phase Shifter, Digital Attenuator, T/R Switch, the actuation of limiting amplifier and Logic control circuit. T/R module is a complex component, which contains high frequency, low frequency, the large signal and the small signal. Its many indices directly affect the entire performance of radar, such as volume, weight, performance, quality, cost, reliability etc. As it has high performance, compact structure, light weight and high reliability, T/R module is the key of advanced phased-array radar.It is difficult for the T/R module that is the key of Antenna Element to launches and accepts the radio-frequency signal in so small volume, and to achieve precise phase shifting and certain power and sensitivity. The topic researches the structure and design of Phased Array Radar T/R module, at the same time researches and designs the unit circuit module for X wave band T/R module (phase inverter, switch, power amplifier, low noise amplifier).Firstly the paper introduces and analyzes systematically the structure of X wave band T/R module, and then introduces the microwave control circuit and switch and the design of circuit for two kinds of Amplitude limiter. It narrates the principle and the design of five digital phase inverter in detail, and then introduces the LNA and the power amplifier in module as well as the realization. Finally each module's realization and the test result of X wave band T/R module are given.