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FREQUENCY SYNTHESIZER WITH MULTIPLE TUNING LOOPS

  • US 20100207693A1
  • Filed: 02/13/2009
  • Published: 08/19/2010
  • Est. Priority Date: 02/13/2009
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a frequency synthesizer comprisinga fine tuning loop operative to receive a reference signal at a reference frequency and generate a fine tuning signal at a first frequency adjustable in fine steps, anda coarse tuning loop coupled to the fine tuning loop and operative to receive the reference signal and generate an output signal at an output frequency, the output frequency being determined based on the first frequency and a second frequency, and the second frequency being adjustable in coarse steps.

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