• DocumentCode
    2554778
  • Title

    A wide-tuning range 1.8 GHz quadrature VCO utilizing coupled ring oscillators

  • Author

    Mesgarzadeh, Behzad ; Alvandpour, Atila

  • Author_Institution
    Dept. of Electr. Eng., Linkoping Univ.
  • fYear
    2006
  • fDate
    21-24 May 2006
  • Lastpage
    5146
  • Abstract
    This paper presents a fully integrated 1.8 GHz, 0.35-mum CMOS quadrature voltage-controlled oscillator (QVCO) design. The topology uses coupled ring oscillators to produce quadrature outputs. In order to gain better phase noise performance LC-based filtering is introduced to QVCO. Also using variable inductance concept, a 1.2 GHz tuning range is achieved. According to simulation results, proposed QVCO draws 26.1 mA from 3.3V supply and exhibits a worst-case phase noise of -117.3 dBc/Hz at 1-MHz offset over the tuning range
  • Keywords
    CMOS integrated circuits; UHF integrated circuits; UHF oscillators; coupled circuits; phase noise; voltage-controlled oscillators; 0.35 micron; 1 MHz; 1.2 GHz; 1.8 GHz; 26.1 mA; 3.3 V; CMOS quadrature voltage-controlled oscillator design; LC-based filtering; phase noise; ring oscillators; variable inductance; Circuit topology; Coupling circuits; Filtering; Frequency conversion; Inverters; Performance gain; Phase noise; Ring oscillators; Tuning; Voltage-controlled oscillators;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
  • Conference_Location
    Island of Kos
  • Print_ISBN
    0-7803-9389-9
  • Type

    conf

  • DOI
    10.1109/ISCAS.2006.1693790
  • Filename
    1693790