摘要
卫星接收机通过同轴电缆同卫星天线上的高频头相连,高频头将卫星天线反射过来的微波信号反馈到卫星接收机内进行处理或解码,解出图像和伴音。高频头质量越好,相应的接收天线口径要求越小,成本越低。根据高频接收系统电路的基本设计原理,如何设计与实现高频头中的微带滤波器和振荡器电路,对整个高频接收系统有至关重要的作用。
Satellite television receiving system consists of satellite antenna, feedback, LNB （Low Noise Block）, satellite receiver. The satellite receiver was connected with the LNB in antenna through coaxial cable, and the LNB sent the reflected micro-wave sign from the satellite antenna to the receiver to be proceeded or decoded in order to get image and audio. The more good quality of the LNB, the smaller caliber and the lower cost of receiving antenna were re＇quired. According to the basic design principle of high frequency receiving system. It is vital important for this system that how to design and produce the micro-strip falter and oseiUation circuit in LNB.
出处
《中国测试技术》
2007年第5期118-120,共3页
CHINA MEASUREMENT & TESTING TECHNOLOGY
