摘要
透明转发器主要将接收的信号低噪声放大,然后混频再发射回地面,由于结构简单,是目前使用较多的一种。但由于透明转发器的行波管(TWTA)具有非线性放大特性,当多路载波同时转发时,将产生严重的交调干扰。论文针对该现象,在0MHz^36MHz带宽内,模拟多路载波经过转发器放大,建立Saleh功放模型,来进行Matlab仿真分析。通过该实验,研究功放的非线性特性以及多载波互调干扰,对转发器合理分配信道路数以及最大限度使用通信容量有重要意义。
Transparent transponder mainly receives signal ,and amplifies it at the price of low noise ,and then launch back to the ground .Because of its simple structure ,it is one of the currently used .But owing to the nonlinear amplifier fea‐tures of the traveling wave tube（TWTA） of transparent transponder ,when multiple carriers go at the same time ,it will re‐sult in serious intermodulation interference .In this paper ,aiming at the phenomenon ,within 0 - 36M Hz bandwidth ,we ana‐log multiplexer carrier repeater amplification process with the Matlab simulation .Through the experiment ,we reaserch on the multicarrier intermodulation interference ,and find it will be more rational to distribute channel and we can make the best use of the repeater communication capacity too .
出处
《舰船电子工程》
2015年第11期84-87,共4页
Ship Electronic Engineering
