W波段低成本数字通信系统

在毫米波频段,由于振荡器的频率漂移很大,常常采用锁相源,使系统成本大大增加.本文采用频率跟踪方案,实现了W波段数字通信系统,并详细描述了系统的关键技术.对8448kbit/s的数字通信实验表明,该系统的门限电平比采用锁相源的系统仅差3dB.该系统方案简单,成本大大降低.实验还表明,该方案中锁相环的采用没有对解调波形产生明显影响.

A Low Cost W-Band Digital Communication system

In millimeter wave,the frequency drift of oscillators is very large,and phase locked oscillators are often used,which make the cost of communication system very high.In this paper,a low cost W band frequency tracing transceiver system is presented,which is used for digital communication.The data of tests indicate that,for 8448kbit/s,the threshold level is only 3dB higher than that of the millimeter wave systems,in which phase locked oscillators are used.At the same time,the scheme of this system is simple and the cost is low.The tests also show that the phase locked loop has no obvious influence on the digital signal.