Phase correlator

Details Phase correlator Phase correlator

1974-08-16

1976-03-16

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

324 83FE, 328134, 329136, H03D 306

Patent

active

039449386

ABSTRACT:
Phase correlator between a wave having a frequency of F sent out by an oscillator and a useful signal having the same frequency F and having a relative phase .phi..sub.0, comprising a first and a second modulator effecting the modulation of the useful signal having a high noise level by the wave out by the oscillator on the one hand through an adjustable phase-shifter of .phi. and on the other hand through the phase-shifter of .phi. followed by a fixed phase-shifter of .phi..sub.1, an adjusting circuit of .phi. by the error signal between the two preceding modulation signals coming respectively from two integrators and a third modulator effecting the modulation of the signal having a high noise level by the wave sent out by the oscillator through another phase-shifter of .phi.1/2 connected with the phase-shifter.

REFERENCES:
patent: 3001133 (1961-09-01), Boscia
patent: 3083340 (1963-03-01), Nelson
patent: 3109143 (1963-10-01), Gluth
patent: 3122704 (1964-02-01), Jones

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