Phase locked loop having sampling gate phase detector

Details Phase locked loop having sampling gate phase detector Phase locked loop having sampling gate phase detector

1990-06-29

1991-10-29

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

With intermittent comparison controls

331 17, 331 25, H03L 7091

Patent

active

050619047

ABSTRACT:
A phase-lock circuit for controlling an oscillator includes a sampling gate that operates during a gate interval to pass transitions in a comparison signal derived from the oscillator to produce therefrom an oscillator-controlling error signal that is representative of the phase-error direction and magnitude of the substantially symmetrical relationship between occurrence of transitions in the comparison signal within the interval of the gate pulse.

REFERENCES:
patent: 3478276 (1969-11-01), Reichart
patent: 4868523 (1989-09-01), Petersson

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