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Monopulse cavity-backed multipole antenna system

  • US 4,649,391 A
  • Filed: 02/01/1984
  • Issued: 03/10/1987
  • Est. Priority Date: 02/01/1984
  • Status: Expired due to Term
First Claim
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1. An antenna system comprising:

  • a substantially cylindrical cavity defined by a conductive enclosure and having a center axis;

    N radiation elements comprising substantially identical, substantially planar, non-interleaved elements of a polygon shape arranged in a closely packed, substantially symmetrical configuration about the axis of said cavity and adapted for communicating right circularly polarized (RCP) and left circularly polarized (LCP) electromagnetic energy wherein N is no less than six; and

    difference signal means coupled thereto for providing an antenna system difference pattern characterized by substantial symmetry in space about the antenna boresight.

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