• DocumentCode
    1539229
  • Title

    Stability of second order time-varying constrained notch filters

  • Author

    Wulich, D. ; Plotkin, E.I. ; Swamy, M.N.S.

  • Author_Institution
    Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
  • Volume
    26
  • Issue
    18
  • fYear
    1990
  • Firstpage
    1508
  • Lastpage
    1509
  • Abstract
    The stability of second order time-varying constrained notch filters (TVCNF) which are capable of rejecting a sine signal with time-varying frequency is analysed. Two cases are considered: TVCNF1, where one of the two coefficients of the filter is allowed to vary with time while the value of the second coefficient is kept constant; TVCNF2, where both the coefficients can vary with time. It is shown that TVCNF2 is always asymptotically stable while the TVCNF1 possesses unstable regions. Thus for tracking a sine signal with time-varying frequency, TVCNF2 is preferable to TVCNF1.
  • Keywords
    adaptive filters; network analysis; notch filters; stability; time-varying networks; second order time-varying constrained notch filters; sine signal rejection; time-varying frequency; tracking;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19900968
  • Filename
    58122
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1539229