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Low sidelobe reflector antenna with shield

  • US 9,019,164 B2
  • Filed: 07/22/2013
  • Issued: 04/28/2015
  • Est. Priority Date: 09/12/2011
  • Status: Active Grant
First Claim
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1. A front feed reflector antenna, comprising:

  • a dish reflector with a focal point;

    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 proximate the focal point; and

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

    wherein a subtended angle between the longitudinal axis and a line between the focal point and a distal periphery of the shield is 50 degrees or less.

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