• DocumentCode
    832529
  • Title

    Digital tuning of high-order high-Q continuous-time filters

  • Author

    Sumesaglam, T. ; Karsilayan, A.I.

  • Author_Institution
    Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
  • Volume
    38
  • Issue
    19
  • fYear
    2002
  • fDate
    9/12/2002 12:00:00 AM
  • Firstpage
    1076
  • Lastpage
    1078
  • Abstract
    A digital tuning scheme for automatic tuning of high-order high-Q continuous-time filters is proposed. The scheme uses phase information for both centre frequency and Q tuning, and does not rely on the relation between the passband gain and Q factor. Digital control of frequency and Q tuning loops improves the stability by enabling only one loop at a given tuning cycle. High-order filter tuning is performed without separating individual sections, eliminating switches and their parasitics
  • Keywords
    Q-factor; band-pass filters; circuit stability; circuit tuning; continuous time filters; digital circuits; digital control; Q tuning loops; active filters; automatic tuning; centre frequency; continuous-time filters; digital control; digital tuning scheme; frequency tuning loops; high-Q filters; high-order filters; phase information; stability;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:20020720
  • Filename
    1038598