振荡限幅器型卫星电视接收解调器

本文着重介绍了振荡限幅器型门限扩展解调器的工作原理及工作条件,同时设计了一种振荡限幅器型卫星电视接收解调器。该解调器具有电路简单,性能良好,具有较低接收门限等特点,可用于接收苏联714MHz卫星电视节目。此解调器特别适用于一些接收场强较弱的地区。实验表明,该解调器门限改善量约可达3dB。

Satellite TV Receiver Demodulator of the Type of Oscillatorlimiter

This paper mainly presents operation principles and condi- tions of threshold extended demodulator of the type of oscillator limiter. A satel- lite TV receiver demodulator of the type of oscillator limiter has been designed. The demodulator is characterised by its circuitry simplicity, good quality, lower threshold level and etc...It may be used for receiving TV programs from the Russian 714MHz TV satellite. The demodulator is especially useful for those ar- eas where the available level of field strength is low. Experiments have shown that upto 3dB of threshold improvement can be achieved.