• DocumentCode
    3165239
  • Title

    Suggestion for a new formula to calculate Group-delay from frequency domain measurements

  • Author

    Shapir, Itzhak

  • Author_Institution
    RAFAEL, Armament Dev. Authority Ltd., Haifa
  • fYear
    2006
  • fDate
    10-15 Sept. 2006
  • Firstpage
    1233
  • Lastpage
    1236
  • Abstract
    This paper presents a simple case study of a low Q band reject filter. Calculation based on phase derivative produces negative group-delay for this circuit. In the paper, a modified formula Dg = [(partA/A)/partomega)2 + (partPhi/partomega)2)]frac12 is suggested, based on a normalized derivative of the full complex transmission function T(omega) = A(omega))e -jPhi(omega). This formula produces positive delay for all frequencies, having a maximum value at resonance. For flat amplitude response, the formula converges to the classic formula Dg = partPhi/partomega
  • Keywords
    band-stop filters; delays; frequency-domain analysis; network analysis; flat amplitude response; frequency domain measurements; group-delay calculation; low Q band reject filter; modified formula; normalized derivative; phase derivative; positive delay; Analytical models; Circuit simulation; Distortion measurement; Filters; Frequency domain analysis; Frequency measurement; Microwave measurements; Propagation delay; Shape; Time measurement; Delay; filters; group-delay;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Conference, 2006. 36th European
  • Conference_Location
    Manchester
  • Print_ISBN
    2-9600551-6-0
  • Type

    conf

  • DOI
    10.1109/EUMC.2006.281200
  • Filename
    4058051
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3165239