Coherent phase shift keyed demodulator with improved sampling ap

Details Coherent phase shift keyed demodulator with improved sampling ap Coherent phase shift keyed demodulator with improved sampling ap

1983-02-09

1985-04-30

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329110, 329126, 375 82, 375 94, H04L 2722

Patent

active

045146977

ABSTRACT:
A microprocessor-based coherent phase shift keyed demodulator determines the phase of an incoming carrier signal by analyzing zero-crossings of the carrier derived by polarity sampling of the carrier. The polarity samples are initiated by sample pulses produced in bursts, with each burst being triggered by a single microprocessor interrupt. The sample rate within a burst is an exact multiple of the microprocessor clock frequency and is on the order of the basic microprocessor instruction time.

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