FM Demodulator including automatic threshold control circuit

Details FM Demodulator including automatic threshold control circuit FM Demodulator including automatic threshold control circuit

1981-07-27

1984-02-21

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329168, 455214, H03D 300

Patent

active

044333005

ABSTRACT:
An FM demodulating apparatus with a comparator. The comparator is responsive to a threshold signal and an input signal for providing an output signal which changes polarity each time the difference between the threshold signal and the input signal exceeds a predetermined magnitude. A circuit responsive to the input signal exceeding the threshold signal within a predetermined time period provides an output for controlling the magnitude of the threshold signal.

REFERENCES:
patent: 3678396 (1972-07-01), Hoffman
patent: 3863161 (1975-01-01), Johnson et al.

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