Phase jitter canceller

Details Phase jitter canceller Phase jitter canceller

1997-07-07

2000-10-17

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

327555, 375233, 375235, 375371, H03B 100

Patent

active

061337838

ABSTRACT:
A system and method for use in cancelling phase jitter in a Phase Locked Loop (PLL) circuit. A phase jitter canceller receives a phase error signal having phase jitter centered around a center frequency. A frequency and phase control circuit determines the phase of a particular component of phase jitter and an amplitude control circuit determines the amplitude of the particular component of phase jitter in the signal. The output of the phase jitter canceller provides an estimate of the particular component of phase jitter. A parallel arrangement of phase jitter cancellers is also provided for use in cancelling several components of phase jitter.

REFERENCES:
patent: 5304957 (1994-04-01), Edwards
patent: 5315618 (1994-05-01), Yoshida
patent: 5434884 (1995-07-01), Rushing et al.
patent: 5579351 (1996-11-01), Kim

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