FM receiver

Details FM receiver FM receiver

1985-03-27

1987-07-07

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency or phase modulation

329134, 329136, H04B 116, H03D 324

Patent

active

046792473

ABSTRACT:
An improved FM receiver is disclosed incorporating improved oscillating limiter circuitry having an electrically tunable bandpass filter and variable attenuator in regenerative feedback relationship around the limiter. The electrically tunable bandpass filter is responsive to DC components and high frequency noise components of the demodulated video baseband signal. The variable attenuator is responsive to the carrier-to-noise ratio of the received FM signal whereby the amount of regenerative feedback around the limiter will vary inversely proportional to charges in the carrier-to-noise ratio.

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