Demodulators – Frequency modulation demodulator – Having specific distortion – noise or other interference...
Patent
1990-06-14
1991-09-24
Grimm, Siegfried H.
Demodulators
Frequency modulation demodulator
Having specific distortion, noise or other interference...
329321, 455307, 455309, 455312, H04B 110
Patent
active
050517031
ABSTRACT:
An FM demodulating circuit using a tracking filter is disclosed, in which the operation of the tracking filter following the frequency of the signal inputted therein is made more precise by using the tracking filter and an oscillator driven by a same control signal.
REFERENCES:
patent: 4035730 (1977-07-01), Clayton
patent: 4458207 (1984-07-01), Favreau et al.
patent: 4816770 (1989-03-01), Naumann
Amazawa Kiyoshi
Idogawa Kazuhiro
Clarion Co. Ltd.
Grimm Siegfried H.
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