Phase detector and signal locking system controller

Details Phase detector and signal locking system controller Phase detector and signal locking system controller

2006-05-02

2006-05-02

Chin, Stephen (Department: 2634)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C375S354000, C326S093000

Reexamination Certificate

active

07039148

ABSTRACT:
A phase detector and signal locking system controller for use in a digital phase-locked loop (PLL) application includes a first and a second phase detector where the first phase detector result is used to control the initial pull-in and the second phase detector is used to control fine tuning once the phase differences are too small for appropriate detection by the first phase detector. A post processing and control unit operates to effectively merge the two phase detector outputs and to apply the appropriate gain factor that can be used to control a PLL system.

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