• DocumentCode
    901233
  • Title

    New high-directivity coupler design with coupled spurlines

  • Author

    Chang, Sheng-Fuh ; Chen, Jia-Liang ; Jeng, Yng-Huey ; Wu, Chain-Tin

  • Author_Institution
    Dept. of Electr. Eng., Nat. Chung Cheng Univ., Taiwan, Taiwan
  • Volume
    14
  • Issue
    2
  • fYear
    2004
  • Firstpage
    65
  • Lastpage
    67
  • Abstract
    A new high-directivity coupler using coupled spurlines is proposed. The effective capacitances of coupled spurlines generate an isolation zero at any desired frequency due to their equalization effect on the odd-mode and even-mode phase velocities. The measurement results demonstrate an improved performance over the conventional parallel-line coupler in terms of the isolation and the coupling flatness.
  • Keywords
    microstrip directional couplers; capacitance; coupled spurlines; coupling flatness; even-mode phase velocity; high-directivity coupler; isolation zero; microstrip directional coupler; odd-mode phase velocity; parallel-line coupler; Capacitance; Capacitors; Coupling circuits; Dielectrics; Directional couplers; Frequency; Impedance; Integrated circuit measurements; Microstrip; Spurline;
  • fLanguage
    English
  • Journal_Title
    Microwave and Wireless Components Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1531-1309
  • Type

    jour

  • DOI
    10.1109/LMWC.2003.822565
  • Filename
    1268099
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=901233