Demodulators – Amplitude modulation demodulator – Having specific distortion – noise or other interference...
Patent
1977-04-07
1978-07-25
Kominski, John
Demodulators
Amplitude modulation demodulator
Having specific distortion, noise or other interference...
325419, H03D 300
Patent
active
041032446
ABSTRACT:
An FSK demodulator is provided with an AFC circuit. The AFC circuit is a negative feedback loop having at least n stable points corresponding to n-level transmitting frequencies. The cut-off frequency of the negative feedback loop is selected higher than the cut-off frequency of the low frequency components from the n-level signals containing a D.C. component which are used to generate the transmitting frequencies.
Kominski John
Nippon Electric Co. Ltd.
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