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SYSTEMS AND METHODS FOR CONTROLLING FREQUENCY SYNTHESIS

  • US 20140177770A1
  • Filed: 02/26/2014
  • Published: 06/26/2014
  • Est. Priority Date: 04/26/2012
  • Status: Active Grant
First Claim
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1. A control system for a frequency synthesizer of a wireless device, the control system comprising:

  • a phase detector configured to receive a reference signal and a feedback signal, the phase detector further configured to generate a first signal representative of a phase difference between the reference signal and the feedback signal;

    a charge pump in communication with the phase detector, the charge pump configured to generate a compensation signal based at least in part on the first signal; and

    an oscillator in communication with the charge pump, the oscillator configured to generate an output signal based on the compensation signal, the compensation signal configured to reduce or substantially eliminate one or more spurs associated with the frequency synthesizer.

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