• DocumentCode
    1760240
  • Title

    Comments on “A Rigorous Design Methodology for Compact Planar Branch-Line and Rat-Race Couplers With Asymmetrical T -Structures”

  • Author

    Hee-Ran Ahn

  • Author_Institution
    Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., Seoul, South Korea
  • Volume
    61
  • Issue
    4
  • fYear
    2013
  • fDate
    41365
  • Firstpage
    1728
  • Lastpage
    1729
  • Abstract
    In the above paper, the high-low impedance (HLI) section and its characteristic impedance of ZHLI are suggested to reduce the size of branch-line and rat-race couplers. The characteristic impedance of ZHLI, however, appears to be incorrect for the application of the asymmetric structures, such as the HLI sections.
  • Keywords
    waveguide couplers; HLI section; asymmetrical T-structures; characteristic impedance; compact planar branch-line couplers; high-low impedance section; rat-race couplers; rigorous design methodology; Couplers; Design methodology; Frequency conversion; Impedance; Power dividers; Scattering parameters; Asymmetric structures; compact rat-race couplers; compact ring- and branch-line hybrids; three-port 3-dB power dividers;
  • fLanguage
    English
  • Journal_Title
    Microwave Theory and Techniques, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9480
  • Type

    jour

  • DOI
    10.1109/TMTT.2013.2250517
  • Filename
    6480897
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1760240