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Varactor voltage controlled oscillator (VCO) providing independent coarse and fine frequency tuning

  • US 8,786,376 B2
  • Filed: 12/13/2011
  • Issued: 07/22/2014
  • Est. Priority Date: 12/13/2011
  • Status: Active Grant
First Claim
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1. A voltage controlled oscillator, comprising:

  • a transistor;

    a tank circuit interconnecting said transistor in feedback, said tank circuit including an inductor having a value L, interconnected with first and second variable capacitors, having values CVAR1 and CVAR2, and a fixed capacitor CFIXED, to cause oscillation of said oscillator at a controlled frequency

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