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Multi-band LC resonance voltage-controlled oscillator with adjustable negative resistance cell

  • US 7,554,416 B2
  • Filed: 10/02/2006
  • Issued: 06/30/2009
  • Est. Priority Date: 12/08/2005
  • Status: Expired due to Fees
First Claim
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1. An LC resonance voltage-controlled oscillator comprising:

  • an inductor providing an inductance element partially determining the frequency of an oscillation wave;

    a discrete capacitor bank providing a capacitance element partially determining the frequency of the oscillation wave and being discretely determined by a control bit signal; and

    a discrete negative resistance cell providing a negative resistance element that is discretely determined by the control bit signal, to keep the amplitude of the oscillation wave constant,wherein the respective control bit signal determined to discretely turn on the respective capacitance element corresponds to the respective control bit signal to discretely turn on the negative resistive element irrespective of the frequency of the oscillation wave.

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