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INJECTION LOCKED PHASE LOCK LOOPS

  • US 20100259305A1
  • Filed: 12/28/2009
  • Published: 10/14/2010
  • Est. Priority Date: 04/08/2009
  • Status: Abandoned Application
First Claim
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1. A signal generating circuit for generating an output signal comprising:

  • a phase detection circuit, arranged to detect a phase difference between an input reference signal and a feedback signal, and generate a control signal according to the phase difference; and

    an injected controlled oscillator, arranged to receive the control signal and an injection signal, and generate the output signal according to the control signal and the injection signal, wherein a frequency of the output signal is proportional to a frequency of the input reference signal, and a frequency of the injection signal does not equal to the frequency of the output signal.

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