Demodulators – Amplitude modulation demodulator – Having specific distortion – noise or other interference...
Patent
1984-07-06
1985-10-22
Grimm, Siegfried H.
Demodulators
Amplitude modulation demodulator
Having specific distortion, noise or other interference...
329112, 329131, 329137, 329145, 358 23, H03D 300
Patent
active
045491437
ABSTRACT:
An F.M. demodulation circuit can be rendered insensitive to amplitude, level and waveform variations of the frequency-modulated carrier signal by using a frequency-demodulator (33,37) tuned to half the frequency of the carrier and preceded by a divide-by-two divider (21).
REFERENCES:
patent: 3701030 (1972-10-01), Gocho et al.
patent: 3863161 (1975-01-01), Johnson et al
Bouland Maurice
Van Gurp Wilhelmus A. J.
Zwijsen Wilhelmus A. J. M.
Briody Thomas A.
Goodman Edward W.
Grimm Siegfried H.
Streeter William J.
U.S. Philips Corporation
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