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广播卫星与星载设备是整个卫星广播系统的核心。在电视广播卫星上有C、Ku波段转发系统,它接收来自上行发射站的信号,并且向卫星电视广播地面接收站转发下行信号,实质上是一个安装在赤道上空的中继站,其工作原理与地面差转机类似。转发系统由收、发天线、转发器和电源组成。转发器又由高灵敏度的宽带低噪声放大器、变频器以及C、Ku波段功率放大
Broadcast satellite and spaceborne equipment are the core of the entire satellite broadcasting system. There are C and Ku band forwarding systems on television broadcasting satellites that receive signals from upstream transmitting stations and forward downstream signals to satellite receiving terrestrial broadcasting stations, essentially a relay station installed above the equator, which works on the ground Difference is similar. Forwarding system consists of receiving, transmitting antenna, transponder and power supply. Transponder by the high sensitivity of the broadband low noise amplifier, inverter and C, Ku band power amplifier