• DocumentCode
    386949
  • Title

    Annular slot direction-finding antenna

  • Author

    Hougardy, H. ; Yaru, N.

  • Author_Institution
    Hughes Aircraft Company, Culver City, CA, USA
  • Volume
    6
  • fYear
    1966
  • fDate
    21-25 March 1966
  • Firstpage
    177
  • Lastpage
    182
  • Abstract
    The radiation characteristics of a flush-mounted, cardioid-pattern, direction-finding antenna are discussed. By use of the general equations for the far field of an annular slot in an infinite and perfectly conducting ground plane, expressions are derived for the radiation field of an antenna consisting of a single annular slot fed with a cylindrical waveguide excited with two orthogonal TE11modes and the TEM mode. The structure of the antenna and the method of exciting the desired modes are described. The effect of the cross-polarization component on the three-dimensional pattern is considered, and theoretical and experimental patterns are included for comparison.
  • Keywords
    Aircraft; Cardiology; Cities and towns; Directive antennas; Equations; Geometry; Navigation; Planar waveguides; Polarization; Slot antennas;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    1958 IRE International Convention Record
  • Conference_Location
    New York, NY, USA
  • Type

    conf

  • DOI
    10.1109/IRECON.1958.1150692
  • Filename
    1150692
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=386949