• DocumentCode
    3093457
  • Title

    A method of varactor capacitance modulation reduction in CMOS LC-VCOs

  • Author

    Kokotovic, D.

  • Author_Institution
    Norwegian University of Science and Technology (NTNU) Dept. of Electronics and Telecommunications, N-7491 Trondheim, Norway
  • fYear
    2004
  • fDate
    8-9 Nov. 2004
  • Firstpage
    111
  • Lastpage
    114
  • Abstract
    A method of varactor capacitance modulation reduction is proposed based on the varactor elements with different degrees of nonlinearity. Two fully integrated LC-voltage-controlled oscillators (VCOs) were fabricated in CMOS technology. VCO1 has a traditional varactor configuration whereas VCO2 utilized the proposed linearization method. VCO2 exhibits an average of 10 dB phase noise improvement at 100 kHz offset across the tuning range around a 4 GHz carrier. Each VCO consumes 20 mA at 1.8 V supply voltage.
  • Keywords
    CMOS technology; Capacitance; Circuit optimization; Phase modulation; Phase noise; Silicon; Tuning; Varactors; Voltage; Voltage-controlled oscillators;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Norchip Conference, 2004. Proceedings
  • Conference_Location
    Oslo, Norway
  • Print_ISBN
    0-7803-8510-1
  • Type

    conf

  • DOI
    10.1109/NORCHP.2004.1423835
  • Filename
    1423835
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3093457