• DocumentCode
    1007417
  • Title

    Radiation characteristics of a dielectric sphere-loaded corrugated pipe

  • Author

    Neelakantaswamy, P.S. ; Banerjee, D.K.

  • Author_Institution
    Dept. of Electrical Engineering., Indian Institute of Technology, Madras, India
  • Volume
    23
  • Issue
    5
  • fYear
    1975
  • fDate
    9/1/1975 12:00:00 AM
  • Firstpage
    728
  • Lastpage
    730
  • Abstract
    The fields radiated by a feed structure consisting of a dielectric sphere placed in front of, but displaced from, the open end of a corrugated pipe with quarter-wave teeth, carrying the HE11mode, are derived. It is shown that this feed system has near-circular far-field characteristics with increased on-axis gain. The feed also has a reduced input VSWR due to the aperture-sphere separation. Theoretical expressions are derived for the radiated far-field components, by treating the off-set sphere as a microwave lens. Experimental results obtained from a test feed confirm the theoretical calculations made.
  • Keywords
    Antenna feeds; Corrugated antennas; Dielectric-loaded antennas; Spherical antennas; Waveguide antennas; Apertures; Dielectrics; Feeds; Helium; Lenses; Optical refraction; Optical waveguides; Planar waveguides; Teeth; Tellurium;
  • fLanguage
    English
  • Journal_Title
    Antennas and Propagation, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-926X
  • Type

    jour

  • DOI
    10.1109/TAP.1975.1141145
  • Filename
    1141145
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1007417