Phase demodulator utilizing a frequency divider, synchronous fil

Details Phase demodulator utilizing a frequency divider, synchronous fil Phase demodulator utilizing a frequency divider, synchronous fil

1981-05-05

1983-12-06

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329103, 329107, 329110, H03D 302, H03K 906

Patent

active

044196300

ABSTRACT:
A phase demodulator for recovering the modulating wave from a phase-moduld wave. A frequency divider is provided to divide the phase-modulated wave in frequency to produce a phase-modulated subharmonic wave which is compared in a phase comparator with a signal produced by passing the phase-modulated subharmonic wave through a syncrhonous filter set at its carrier frequency. The filtered output of the phase comparator is proportional to the amplitude of the modulating wave.

REFERENCES:
patent: 2114335 (1938-04-01), Crosby
patent: 4059805 (1977-10-01), de Laage de Meux et al.

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