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Type-II all-digital phase-locked loop (PLL)

  • US 20030234693A1
  • Filed: 06/19/2003
  • Published: 12/25/2003
  • Est. Priority Date: 06/19/2002
  • Status: Active Grant
First Claim
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1. A method for improving signal acquisition performance in a phase-locked loop (PLL) comprising:

  • acquiring a signal using a proportional loop gain circuit;

    measuring an offset in the signal;

    activating an integral block to accumulate an adjusted signal; and

    combining outputs from the proportional loop gain circuit and the integral block to produce an oscillator tuning signal.

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