• DocumentCode
    1365625
  • Title

    LC-VCO Design With Dual- {\\rm G} _{\\rm m} , Boosted for RF Oscillation and Attenuated for LF Noise

  • Author

    Koukab, Adil

  • Author_Institution
    Swiss Fed. Inst. of Technol. in Lausanne (EPFL), Lausanne, Switzerland
  • Volume
    20
  • Issue
    12
  • fYear
    2010
  • Firstpage
    675
  • Lastpage
    677
  • Abstract
    A VCO topology with a high at RF and low gm at low frequencies (LF) is presented. A high gm(RF) improves start-up conditions, and a low gm(LF) enables a significant improvement of the phase noise and the power supply rejection. The VCO with a modified prescaler was implemented in 0.25 μm CMOS technology. The measured phase is at 1 MH offset, when the VCO works at 3 GHz and consumes 7.5 mW. The corresponding figure of merit is 189.2 dBc/Hz/mW.
  • Keywords
    CMOS analogue integrated circuits; MMIC oscillators; circuit oscillations; network topology; prescalers; voltage-controlled oscillators; CMOS technology; LC-VCO design; LF noise; RF oscillation; VCO topology; frequency 3 GHz; modified prescaler; phase noise; power 7.5 mW; power supply rejection; size 0.25 mum; Noise measurement; Phase noise; Thermal noise; Voltage-controlled oscillators; Flicker noise; phase noise; power supply rejection (PSR); thermal noise; voltage-controlled oscillator (VCO);
  • fLanguage
    English
  • Journal_Title
    Microwave and Wireless Components Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1531-1309
  • Type

    jour

  • DOI
    10.1109/LMWC.2010.2087011
  • Filename
    5613952
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1365625