• DocumentCode
    1195407
  • Title

    Improving the symmetry of radiation patterns for offset reflectors illuminated by matched feeds

  • Author

    Prasad, K.M. ; Shafai, Lotfollah

  • Author_Institution
    Dept. of Electr. Eng., Manitoba Univ., Winnipeg, Man., Canada
  • Volume
    36
  • Issue
    1
  • fYear
    1988
  • fDate
    1/1/1988 12:00:00 AM
  • Firstpage
    141
  • Lastpage
    144
  • Abstract
    The large difference between the dominant sidelobe levels in the asymmetric and symmetric plane radiation patterns of the short-focal-length offset paraboloids is minimized by illuminating the reflector with a prime-focus tilted matched feed. The amplitude of the asymmetric mode (TE21) component in the matched feed is numerically evaluated for achieving an optimum peak cross-polar level. Effect of the feed tilt on the reflector efficiency is also indicated
  • Keywords
    antenna feeders; antenna radiation patterns; reflector antennas; dominant sidelobe levels; feed tilt; matched feeds; offset reflectors; optimum peak cross-polar level; radiation patterns symmetry; reflector antennas; short-focal-length offset paraboloids; Antenna feeds; Antenna radiation patterns; Antennas and propagation; Apertures; Atmospheric measurements; Coaxial components; Interference; Lighting; Pattern matching; Polarization;
  • fLanguage
    English
  • Journal_Title
    Antennas and Propagation, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-926X
  • Type

    jour

  • DOI
    10.1109/8.1086
  • Filename
    1086
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1195407