Phase detector which eliminates frequency ripple

Details Phase detector which eliminates frequency ripple Phase detector which eliminates frequency ripple

1994-03-17

1998-11-10

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

327 3, 327 5, H03K 526

Patent

active

058349502

ABSTRACT:
A phase detector is disclosed that eliminates frequency ripple in a phase-locked loop circuit. The detector includes first and second circuits for providing UP and DOWN signals respectively. It also includes a delay element for setting the duration of the DOWN signal so as to eliminate phase jitter and static phase offset.

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