Coherently demodulating arrangement including quasi-coherent dem

Details Coherently demodulating arrangement including quasi-coherent dem Coherently demodulating arrangement including quasi-coherent dem

1991-05-28

1992-07-07

Grimm, Siegfried H.

Demodulators

Phase shift keying or quadrature amplitude demodulator

Input signal combined with local oscillator or carrier...

329325, 329346, 375 81, H04L 2722

Patent

active

051286262

ABSTRACT:
An arrangement for coherently demodulating PSK (phase-shift keying) signals, includes a quasi-coherent demodulator which implements coarse coherent demodulation on an incoming PSK-modulated IF signal using a variable frequency which is applied from a controllable local oscillator. The output of the quasi-coherent demodulator is applied to a coherent demodulator which also receives the output of a VCO (Voltage Controlled Oscillator). A phase detector receives the output of the coherent demodulator and applies the output thereof to the VCO via a loop filter. The output of the loop filter is applied to a local oscillator controller having an output which is used to control the controllable local oscillator.

REFERENCES:
patent: 3371281 (1968-02-01), Powell

Affiliated with

Also associated with

Rating

Coherently demodulating arrangement including quasi-coherent dem does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coherently demodulating arrangement including quasi-coherent dem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherently demodulating arrangement including quasi-coherent dem will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1832122