• DocumentCode
    2144361
  • Title

    A Variable Attenuator with Flat Group Delay Characteristics for PCS Applications

  • Author

    Park, Chan-Wang ; Kouki, Ammar B. ; Ghannouchi, Fadhel M. ; Allamando, Etienne A.

  • Author_Institution
    Institut d´´Electronique et Microélectronique du Nord, Département Hyperfréquences et Semiconducteurs, Université des Sciences et Technologies de Lille, Cité Scientifique, 59652, Villeneuve d´´Ascq, FRANCE. park@iemn.univ-Lille1.fr
  • Volume
    2
  • fYear
    1998
  • fDate
    Oct. 1998
  • Firstpage
    684
  • Lastpage
    688
  • Abstract
    A new reflective-type variable attenuator for PCS applications using a backward-wave quadrature hybrid and four PIN diodes is presented. The proposed configuration uses a single bias line for the four diodes with each two being separated by quarter wavelength transmission line. Simulation and experimental results show that an attenuation range of 14.3 dB with a maximum phase variation of 3° can easily be achieved. The attenuation and group delay exhibit good flatness with a variation of ±0.06 dB in attenuation and ±20 ps in group delay over a 100MHz bandwidth.
  • Keywords
    Application software; Attenuation; Attenuators; Bandwidth; Control systems; Delay; Diodes; Impedance; Personal communication networks; Transmission lines;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Conference, 1998. 28th European
  • Conference_Location
    Amsterdam, Netherlands
  • Type

    conf

  • DOI
    10.1109/EUMA.1998.338238
  • Filename
    4139293
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2144361