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Voltage controlled capacitive elements having a biasing network

  • US 6,833,769 B2
  • Filed: 03/21/2003
  • Issued: 12/21/2004
  • Est. Priority Date: 03/21/2003
  • Status: Active Grant
First Claim
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1. A voltage-controlled oscillator comprising:

  • a resonator circuit that includes a capacitive circuit, the capacitive circuit including a plurality of analog voltage controlled capacitive elements coupled to one another; and

    a bias voltage source coupled to the plurality of analog voltage controlled capacitive elements, the bias voltage source adapted to provide, in combination with a resistive network, a distinct bias voltage to each of the analog voltage controlled capacitive elements;

    where individual ones of the plurality of analog voltage controlled capacitive elements are activated as a function of the magnitude of the voltage thereby increasing linearity of a frequency tuning voltage parameter of the resonator.

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