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Generating a frequency switching local oscillator signal

  • US 8,014,486 B2
  • Filed: 03/27/2008
  • Issued: 09/06/2011
  • Est. Priority Date: 03/27/2008
  • Status: Expired due to Fees
First Claim
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1. A method of generating a frequency switching local oscillator signal, comprising:

  • generating a reference clock signal;

    clocking a counter with the reference clock signal;

    the counter controlling cyclical selection of a one of a plurality of analog values stored in a periodic signal generator, the cyclical selection producing a periodic signal at an output of the periodic signal generator;

    controlling a frequency of the periodic signal at the output of the periodic signal generator by controlling an order of the cyclical selection of the plurality of analog values stored in the periodic signal generator;

    generating the frequency switching local oscillator signal based on the periodic signal;

    whereincontrolling the order of cyclic selection comprises directing each of a different plurality of subsets of counter bits to switch control lines of the periodic signal generator, and choosing one counter bit from each of the subsets.

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