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Integrated VCO having an improved tuning range over process and temperature variations

  • US 7,019,598 B2
  • Filed: 09/22/2003
  • Issued: 03/28/2006
  • Est. Priority Date: 11/12/1998
  • Status: Expired due to Term
First Claim
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1. An integrated VCO circuit comprising:

  • a VCO having a pair of driver transistors and a tank circuit; and

    an adaptive bias circuit coupled to said driver transistors that maintains a nearly constant transconductance in said pair of driver transistors in response to changing temperature.

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