Phase synchronizing circuit

Details Phase synchronizing circuit Phase synchronizing circuit

1977-03-21

1978-07-04

Kominski, John

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329112, 329122, H03D 1300

Patent

active

040991300

ABSTRACT:
A phase synchronizing circuit for use in a multi-level, multi-phase, superposition-modulating signal transmission system is disclosed. The circuit includes a voltage-controlled oscillator which is responsive to a phase error signal. The output of the voltage-controlled oscillator is supplied as the reference input to a phase-detecting circuit. First and second demodulator circuits receive the output of the phase-detecting circuit and detect the superposition modulated signal. A logic circuit processes the outputs of the demodulator circuits to produce a signal representing a phase difference between first and second modulated carrier waves. Control circuitry is responsive to the output of the logic circuit for controlling at least one of the phase variation and the amplitude variation on the phase error signal.

REFERENCES:
patent: 3970946 (1976-07-01), Matsuo
patent: 4039961 (1977-08-01), Ishid et al.

Affiliated with

Also associated with

Rating

Phase synchronizing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase synchronizing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase synchronizing circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-280226