Cycle slip detection using low pass filtering

Details Cycle slip detection using low pass filtering Cycle slip detection using low pass filtering

2005-12-06

2005-12-06

Deppe, Betsy L. (Department: 2637)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C375S376000

Reexamination Certificate

active

06973150

ABSTRACT:
A cycle slip detector and detection method for a phase comparison circuit are provided. The cycle slip detector includes a cycle slip detection filter possessing a predetermined filter bandwidth and a predetermined high frequency cut-off. The cycle slip detection filter receives a phase difference generated by the phase comparison circuit and transforms the phase difference into a filtered phase difference. The cycle slip detector further includes a compensator communicating with the cycle slip detection filter. The compensator compensates the magnitude based on a predetermined compensation response. The cycle slip detector further includes a cycle slip occurrence detector communicating with the compensator. The cycle slip occurrence detector compares a compensated magnitude of the filtered phase difference to a predetermined cycle slip threshold and generates a cycle slip output if the compensated magnitude exceeds the predetermined cycle slip threshold.

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R. C. Den Dulk, Electronics Letters, Jul. 7th1988, Vo. 24, No. 14, pp. 880-882.

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