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Low sidelobe reflector antenna

  • US 8,581,795 B2
  • Filed: 09/12/2011
  • Issued: 11/12/2013
  • Est. Priority Date: 09/01/2011
  • Status: Active Grant
First Claim
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1. A front feed reflector antenna, comprising:

  • a dish reflector with a reflector focal length to reflector diameter ratio of less than 0.25;

    a wave guide coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis;

    a dielectric block coupled to a distal end of the waveguide;

    a sub-reflector coupled to a distal end of the dielectric block; and

    a generally cylindrical shield coupled to the periphery of the dish reflector;

    a diameter of the sub-reflector dimensioned to be 2.5 wavelengths or more of a desired operating frequency.

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