FM Demodulator with selective phase shift circuits

Details FM Demodulator with selective phase shift circuits FM Demodulator with selective phase shift circuits

1984-07-18

1985-12-31

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329137, 329145, 358 23, 455214, H03D 306

Patent

active

045624046

ABSTRACT:
The disclosure is directed to an improved FM demodulating circuit which is simple in circuit construction, with a small number of parts required, and so arranged that in a quadrature detecting circuit, a plurality of piezoelectric resonators, for example, ceramic discriminators employed for a phase shift circuit are changed over by switching circuits for common use of parts other than the ceramic discriminators for the demodulation of the FM intermediate frequency signals.

REFERENCES:
patent: 4160955 (1979-07-01), Sato
patent: 4188639 (1980-02-01), Murakami et al.

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