• DocumentCode
    3139915
  • Title

    A 1V CMOS quadrature LC VCO using diode coupling

  • Author

    Fu, Chan Tat ; Luong, Howard C.

  • Author_Institution
    Hong Kong Univ. of Sci. & Technol., Hong Kong
  • fYear
    2008
  • fDate
    22-24 Jan. 2008
  • Firstpage
    167
  • Lastpage
    170
  • Abstract
    A new quadrature VCO is designed in a standard UMC 0.13 mu m CMOS process with low voltage, low power and low phase noise. Diodes are employed to generate second-harmonic coupling between the common sources of two LC VCOs for quadrature outputs. At 1-V supply and at 3.9 GHz, the QVCO measures phase noise of -117dBc/Hz at 1-MHz offset while dissipating 7.5 mA which corresponds to a figure of merit of 180 dBc. The core area is 0.37 mm2.
  • Keywords
    CMOS integrated circuits; coupled circuits; voltage-controlled oscillators; CMOS; current 7.5 mA; diode coupling; frequency 3.9 GHz; harmonic coupling; low phase noise; low power noise; low voltage noise; quadrature LC VCO; size 0.13 mum; voltage 1 V; voltage controlled oscillator; CMOS process; Coupling circuits; Design engineering; Diodes; Frequency conversion; Low voltage; Phase noise; Power engineering and energy; Power engineering computing; Voltage-controlled oscillators; Voltage controlled oscillators;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Radio and Wireless Symposium, 2008 IEEE
  • Conference_Location
    Orlando, FL
  • Print_ISBN
    978-1-4244-1462-8
  • Electronic_ISBN
    978-1-4244-1463-5
  • Type

    conf

  • DOI
    10.1109/RWS.2008.4463455
  • Filename
    4463455
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3139915