Signal receiver for terrestrial and satellite broadcastings

摘要: A signal receiver which is capable of receiving and demodulating a satellite broadcasting an FM terrestrial AM disclosed. signals are frequency-converted into having frequencies in same intermediate frequency band by making common use radio amplifier, mixer, local oscillator filter. At the time reception signal, demodulated phase-locked loop circuit, subjected to modulation part thereby constituting negative feedback loop, thus narrowing occupied bandwidth signal. circuit used regenerate carrier, output input multiplier effect synchronous detection this time, utilized automatic control, achieving stabilization detection.