• DocumentCode
    2077085
  • Title

    Modified Parallel-Coupled Filter Structure Improves the Upper Stop-Band Performance

  • Author

    Itoh, Tatsuo ; Chang, Chi-Yang

  • Author_Institution
    Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, U. S. A.
  • Volume
    1
  • fYear
    1990
  • fDate
    9-13 Sept. 1990
  • Firstpage
    925
  • Lastpage
    927
  • Abstract
    In this paper we describe a modified parallel-coupled microstrip filter structure. Using this new structure the filter upper stop-band performance is improved by at least 15 dB. The new structure uses less space than the traditional parallel-coupled filter structure first proposed by S.B. Cohn in 1958 [1]. This new structure is especially useful for filter bandwidths greater than 25%. Several examples show the performance improvement of the filters fabricated in both low dielectric constant (2.55) and high dielectric constant (10.2) substrates.
  • Keywords
    Active filters; Band pass filters; Bandwidth; Coupling circuits; Dielectric constant; Dielectric substrates; Frequency; High-K gate dielectrics; Microstrip filters; Resonator filters;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Conference, 1990. 20th European
  • Conference_Location
    Budapest, Hungary
  • Type

    conf

  • DOI
    10.1109/EUMA.1990.336161
  • Filename
    4136118
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2077085