Phase-locked loop structures with enhanced signal stability

Phase-locked loop structures with enhanced signal stability

  • CN 1,883,119 A
  • Filed: 09/13/2004
  • Published: 12/20/2006
  • Est. Priority Date: 11/18/2003
  • Status: Active Application
First Claim
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1. one kind provides the phase-locked loop systems of loop output signal in response to reference signal, and this system comprises:

  • Oscillator network, it produces described loop output signal, and its frequency response is determined parameter and is changed in control voltage and frequency;

    Feedback loop, it produces described control voltage in response to the phase difference between described reference signal and the loop feedback signal, wherein said feedback loop comprises loop divider, and it has divisor N and produces described loop feedback signal in response to described loop output signal;

    AndController, it increases progressively described frequency and determines that parameter is to keep described control voltage in the predetermined control voltage range.

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