• DocumentCode
    1259722
  • Title

    Four-element planar Butler matrix using half-wavelength open stubs

  • Author

    Hayashi, Hitoshi ; Hitko, Donald A. ; Sodini, Charles G.

  • Author_Institution
    MIT, Cambridge, MA, USA
  • Volume
    12
  • Issue
    3
  • fYear
    2002
  • fDate
    3/1/2002 12:00:00 AM
  • Firstpage
    73
  • Lastpage
    75
  • Abstract
    A simple design of a four-element planar Butler matrix is presented, comprising half-wavelength open stubs to improve relative-phase characteristics between output ports. Over the frequency range from 0.85 to 0.90 GHz, the experimental matrix exhibits phase errors (in the desired phase differences between output ports) and couplings of within 2/spl deg/ and -6.45/spl plusmn/0.25 dB, respectively.
  • Keywords
    microwave circuits; 0.85 to 0.90 GHz; coupling; four-element planar Butler matrix; half-wavelength open stub; microwave circuit; phase error; relative-phase characteristics; Butler matrix; Coupling circuits; Delay lines; Fabrication; Frequency; Impedance; Microwave circuits; Mobile antennas; Phase shifters; Transmission line matrix methods;
  • fLanguage
    English
  • Journal_Title
    Microwave and Wireless Components Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1531-1309
  • Type

    jour

  • DOI
    10.1109/7260.989855
  • Filename
    989855
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1259722