FM demodulator including a DC offset detector

Details FM demodulator including a DC offset detector FM demodulator including a DC offset detector

2005-12-06

2005-12-06

Kinkead, Arnold (Department: 2817)

Demodulators

Frequency modulation demodulator

C329S318000, C329S320000, C375S345000, C455S226100, C455S226200

Reexamination Certificate

active

06972617

ABSTRACT:
An FM demodulator has a differential output demodulator for receiving an FM signal and for outputting a positive differential signal and a negative differential signal of a demodulated signal of the FM signal, a DC offset detector electrically connected to the differential output demodulator for generating a DC offset signal according to peak signals of the positive differential signal and the negative differential signal, and a correction circuit electrically connected to the differential output demodulator and the DC offset detector to compensate for the demodulated signal according to the DC offset signal.

REFERENCES:
patent: 4272726 (1981-06-01), Malchow
patent: 4479253 (1984-10-01), Daniel, Jr.

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