MMDS传输子干线非线性失真的产生与防止

The prevention of nonlinear distortion in main line based on MMDS transmission system

分析了多路微波分配系统MMDS,认为其子系统干线传输设计的重点是正确设计干线放大器输入信号电平的变化范围,只有这样才能获得高的载噪比使终端显示优质图像,又能保证系统不产生非线性失真,保证系统的CM,IM等参数在国标以上运行。

Multichannel microwave distribution sysytem MMDS transfers CATV signals opencircuited.The emphasis of transmission design of the main line in the subsystem is to set the input level range of main line amplifier correctly,so that perfect images can be received by terminal and there is no nonlinear distortion in the system.