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Common aperture antenna for multiple contoured beams and multiple spot beams

  • US 8,315,557 B1
  • Filed: 06/25/2010
  • Issued: 11/20/2012
  • Est. Priority Date: 12/31/2009
  • Status: Active Grant
First Claim
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1. A method of operating an antenna, the method comprising:

  • providing a reflector configured to support two or more contour beams created by two or more feed elements, the two or more feed elements being located in a focal plane of the reflector;

    providing a spot beam feed element;

    illuminating the reflector with the spot beam feed element at a plurality of distances;

    measuring a phase angle at an aperture of the reflector of multiple signals created by a spot beam at each distance;

    determining a spot beam feed element location selected from the plurality of distances that creates a signal having a phase angle that varies within a limit across the aperture; and

    locating the spot beam feed element at the spot beam feed element location to generate a spot beam using the reflector configured to support the two or more contour beams.

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