Phase-locked loop with supplemental phase signal

Details Phase-locked loop with supplemental phase signal Phase-locked loop with supplemental phase signal

1985-12-06

1987-02-10

LaRoche, Eugene R.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

375120, H03L 706

Patent

active

046425756

ABSTRACT:
A phase-locked loop is supplied with a random two-level code sequence derived from a clock pulse having a frequency f.sub.0 to generate a local clock pulse which is in phase and frequency synchronization with the clock pulse. The local clock pulse is supplied by means of a voltage control oscillator controlled in accordance with a phase difference signal and a phase supplement signal. The phase difference signal is indicative of the difference in phase between an input signal and a discrimination signal. The phase supplement signal is derived by a signal generator responsive to the phase difference signal and the local clock pulses.

REFERENCES:
patent: 4535459 (1985-08-01), Hogge, Jr.
Halgren et al., "Improved Acquisition in Phase-Locked Loops with Sawtooth Phase Detectors", IEEE Transactions on Communications, vol. COM-30, No. 10, Oct. '82.

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