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Beamforming for spatial sidelobe cancellation and AMR direction finding

  • US 20080068266A1
  • Filed: 11/23/2005
  • Published: 03/20/2008
  • Est. Priority Date: 11/23/2005
  • Status: Abandoned Application
First Claim
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1. An apparatus comprising:

  • an array of antenna elements including a center element and a plurality of other elements symmetrically positioned with respect to the center element;

    a beamformer for adjusting signals to and from the plurality of other elements to form a first beam pattern;

    a sum element for adding signals from the beamformer and the center element to form a sum pattern; and

    a difference element for subtracting signals from the beamformer and the center element to form a null pattern including a null aligned with a boresight of the array of antenna elements, and an omni-like pattern on opposite sides of the boresight.

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