• DocumentCode
    2158108
  • Title

    A 10dB Branch Line Coupler Using Defected Ground Structure

  • Author

    Kim, Chul-Soo ; Lim, Jong-Sik ; Park, Jun-Seok ; Ahn, Dal ; Nam, Sangwook

  • Author_Institution
    Dept. of Electronics, Soonchunhyang Univ., Chungnam, Korea
  • fYear
    2000
  • fDate
    Oct. 2000
  • Firstpage
    1
  • Lastpage
    4
  • Abstract
    This paper presents a novel 90° branch-line coupler with DGS(Defected Ground Structure), which is etched on the backside metallic plane. The DGS section can implement high impedance transmission line easily with microstrip configuration. DGS sections under a conventional microstrip line are analyzed to find the characteristic impedance and electrical length by means of three dimensional field analysis. In order to show the validity of the proposed DGS section, a branch-line coupler with the loose coupling of lOdB is fabricated and measured. Measured performances of lOdB branch line coupler with DGS show excellent agreement with predicted results.
  • Keywords
    Coupling circuits; Distributed parameter circuits; Etching; Frequency; Impedance; Inductance; Microstrip; Scattering parameters; Transmission line measurements; Transmission line theory;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Conference, 2000. 30th European
  • Conference_Location
    Paris, France
  • Type

    conf

  • DOI
    10.1109/EUMA.2000.338874
  • Filename
    4139887
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2158108