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MULTI-BAND RING FOCUS ANTENNA SYSTEM WITH CO-LOCATED MAIN REFLECTORS

  • US 20050099350A1
  • Filed: 11/07/2003
  • Published: 05/12/2005
  • Est. Priority Date: 11/07/2003
  • Status: Active Grant
First Claim
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1. A compact multi-band ring-focus antenna system comprising:

  • a first and a second main reflector, each having a shaped surface of revolution about a common boresight axis of said antenna;

    a first RF feed that is a backfire type system for feeding said first main reflector on a first frequency band;

    a second RF feed coaxial with said first RF feed for feeding said second main reflector on a second frequency band spectrally offset from said first frequency band; and

    wherein a portion of said second RF feed passes through a first sub-reflector of said backfire feed, and said second RF feed is terminated a distance from said first sub-reflector to illuminate a second sub-reflector.

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