• DocumentCode
    1015673
  • Title

    Loaded horizontal antenna over an imperfect ground

  • Author

    Samii, Y. Rahmat ; Parhami, P. ; Mittra, R.

  • Author_Institution
    California Inst. of Technology, Pasadena, CA, USA
  • Volume
    26
  • Issue
    6
  • fYear
    1978
  • fDate
    11/1/1978 12:00:00 AM
  • Firstpage
    789
  • Lastpage
    796
  • Abstract
    The Fresnel reflection coefficient technique is employed to establish an E -field integral equation for the antenna current. A resistive loading of the form \\Lambda (x) = \\Lambda _{0}/(1 - |x|/L) is used to load the antenna. An optimization technique is discussed for determining the value of critical loading \\Lambda _{0}^{c} , which enforces a traveling wave current on the antenna. Results are given for the critical loading parameters, antenna currents, input impedances and radiation patterns versus different antenna dimensions and ground permittivities and conductivities. Some representative time-domain results for such loaded antennas are also included.
  • Keywords
    Elevated antennas; Loaded antennas; Antenna radiation patterns; EMP radiation effects; Electromagnetics; Feeds; Frequency; Fresnel reflection; Impedance; Laboratories; Loaded antennas; Reflector antennas;
  • fLanguage
    English
  • Journal_Title
    Antennas and Propagation, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-926X
  • Type

    jour

  • DOI
    10.1109/TAP.1978.1141942
  • Filename
    1141942