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ADJUSTABLE CAPACITOR, DIGITALLY CONTROLLED OSCILLATOR, AND ALL-DIGITAL PHASE LOCKED LOOP

  • US 20100156550A1
  • Filed: 12/04/2009
  • Published: 06/24/2010
  • Est. Priority Date: 12/19/2008
  • Status: Active Grant
First Claim
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1. An adjustable capacitor, comprising:

  • a capacitor unit comprising a plurality of capacitor groups arranged in a matrix format; and

    a switch unit which adjusts the capacitance of the capacitor unit by connecting at least two capacitor groups of the plurality of capacitor groups in parallel according to a selection signal,wherein the selection signal indicates a column and row information of the at least two capacitors according to the matrix format.

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