一种智能中频收发单元的设计与实现

Design and Realization of an Intelligent Transmitting-Receiving IF Unit

中频收发单元是以频分复用技术为基础,在卫星通信系统中处于重要地位,其性能的可靠和功能的完善对整个系统的稳定运行起着关键作用。给出了一种智能中频收发单元的设计,主要实现中频发送信号衰减自动控制、群路信号放大、放大支路自动倒换、信号实时监测和远程监控等功能,并对设计过程中的关键技术难点进行了分析,通过实践应用,验证了该智能中频收发单元的优异性能。

The transmitting-receiving IF unit is based on frequency division multiplexing technique. It is very important in satellite communication system. Its reliable performances and perfect functions play an important role in the stable run of the whole system. This paper designs an intelligent transmitting-receiving IF unit which can implement the auto-control of transmitting signal attenuation, amplification of group signal, auto-switch of amplification branch, realtime monitor and remote monitor ＆ control, etc. The critical technical difficulties in the design are also analyzed. The practical applications show that this intelligent transmitting-receiving IF unit has excellent performances.