作者: Stanley Roelofs , John R Buckley
DOI:
关键词: Local oscillator 、 Analog transmission 、 Physics 、 Pulse-frequency modulation 、 Electronic engineering 、 Radio transmitter design 、 Optics 、 Pulse-density modulation 、 Voltage-controlled oscillator 、 Phase-locked loop 、 Signal transition
摘要: The output of a microwave oscillator is mixed with an FM modulated crystal controlled reference frequency to develop difference frequency. resulting filtered in low pass filter having predetermined slope and detected. detected modulation signal has phase angle according whether the greater or less than signal. compared sensitive discriminator DC which applied change thereof.