Carrier reproducing circuit for phase shift keying signals

Details Carrier reproducing circuit for phase shift keying signals Carrier reproducing circuit for phase shift keying signals

1985-07-02

1987-01-27

Laroche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329122, 329126, 375 81, 455208, H03D 302

Patent

active

046396829

ABSTRACT:
A frequency converter converts the frequency of a PSK signal into a frequency of a carrier to be reproduced. A carrier reproducing circuit including a PLL circuit reproduces the carrier. The intended data contained in the reproduced carrier is demodulated. A frequency correction data generator forms correction data according to a bit error rate of the demodulated data, and superposes the correction data on a control voltage to a voltage controlled oscillator of the PLL circuit.

REFERENCES:
patent: 4330861 (1982-05-01), Impallomeni et al.
patent: 4525676 (1985-06-01), Atobe et al.

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