• DocumentCode
    271305
  • Title

    Quadrature relaxation oscillator with FoM of −165 dBc/Hz

  • Author

    Ortigueira, E. ; Rabuske, Taimur ; Bica Oliveira, Luís ; Fernandes, J. ; Silva, M.

  • Author_Institution
    INESC-ID, Lisbon, Portugal
  • fYear
    2014
  • fDate
    1-5 June 2014
  • Firstpage
    1372
  • Lastpage
    1375
  • Abstract
    RC oscillators have lower cost and higher tuning range than LC oscillators. However, their phase noise performance is poor and in the case of the relaxation oscillator it is also far from the theoretical optimum. In this paper we present a new circuit of a quadrature relaxation oscillator with faster switching and high amplitude output signal to improve the FoM. The sizing of a prototype in a 130nm CMOS technology was done using a genetic algorithm tool. Simulation results show that the quadrature oscillator operating at 2.4 GHz achieves a figure of merit of -165 dBc/Hz.
  • Keywords
    CMOS integrated circuits; UHF integrated circuits; UHF oscillators; circuit tuning; genetic algorithms; phase noise; relaxation oscillators; CMOS technology; FoM; UHF integrated circuits; UHF oscillators; figure of merit; frequency 2.4 GHz; genetic algorithm tool; phase noise; quadrature relaxation oscillator; size 130 nm; tuning range; CMOS integrated circuits; Phase noise; Power demand; Ring oscillators; Switching circuits; Transistors;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Circuits and Systems (ISCAS), 2014 IEEE International Symposium on
  • Conference_Location
    Melbourne VIC
  • Print_ISBN
    978-1-4799-3431-7
  • Type

    conf

  • DOI
    10.1109/ISCAS.2014.6865399
  • Filename
    6865399
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=271305