Adaptive calibration for digital phase-locked loops

Details Adaptive calibration for digital phase-locked loops Adaptive calibration for digital phase-locked loops

2011-07-05

2011-07-05

Nghiem, Michael P (Department: 2857)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Signal frequency or phase correction

C702S089000, C702S189000

Reexamination Certificate

active

07974807

ABSTRACT:
Techniques for adaptively calibrating a TDC output signal in a digital phase-locked loop (DPLL). In an exemplary embodiment, a calibration factor multiplied to the TDC output signal is adaptively adjusted to minimize a magnitude function of a phase comparator output signal of the DPLL. In an exemplary embodiment, the calibration factor may be adjusted using an exemplary embodiment of the least-mean squares (LMS) algorithm. Further techniques for simplifying the adaptive algorithm for hardware implementation are described.

REFERENCES:
patent: 7183860 (2007-02-01), Staszewski et al.
patent: 7205924 (2007-04-01), Vemulapalli et al.
patent: 7427940 (2008-09-01), Staszewski et al.
patent: 7557623 (2009-07-01), Moehlmann et al.
patent: 2006/0103566 (2006-05-01), Vemulapalli et al.
patent: 2007/0085622 (2007-04-01), Wallberg et al.
patent: 2008/0043894 (2008-02-01), Dedieu et al.
patent: 2008/0157839 (2008-07-01), Staszewski et al.
patent: 2008/0317187 (2008-12-01), Waheed et al.
International Search Report & Written Opinion—PCT/US09/057550 International Search Authority—European Patent Office—Jan. 21, 2010.

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