CAJ | 학술논문

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0M Hz ～36M Hz 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。
투명전발기주요장접수적신호저조성방대，연후혼빈재발사회지면，유우결구간단，시목전사용교다적일충。단유우투명전발기적행파관（TWTA）구유비선성방대특성，당다로재파동시전발시，장산생엄중적교조간우。논문침대해현상，재0M Hz ～36M Hz 대관내，모의다로재파경과전발기방대，건립 Saleh 공방모형，래진행 Matlab 방진분석。통과해실험，연구공방적비선성특성이급다재파호조간우，대전발기합리분배신도로수이급최대한도사용통신용량유중요의의。
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 .