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INJECTION-LOCKED PHASE LOCKED LOOP CIRCUITS USING DELAY LOCKED LOOPS

  • US 20150213873A1
  • Filed: 12/02/2014
  • Published: 07/30/2015
  • Est. Priority Date: 01/28/2014
  • Status: Active Grant
First Claim
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1. An injection-locked phase-locked loop (ILPLL) circuit, comprising:

  • a delay-locked loop (DLL) configured to generate a DLL clock by performing a delay-locked operation on a reference clock; and

    an ILPLL including a voltage controlled oscillator (VCO), the ILPLL being configured to generate an output clock by performing an injection synchronous phase-locked operation on the reference clock, whereinthe DLL clock is injected into the VCO as an injection clock of the VCO.

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