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Reflector array antenna with crossed polarization compensation and method for producing such an antenna

  • US 9,112,281 B2
  • Filed: 02/11/2011
  • Issued: 08/18/2015
  • Est. Priority Date: 03/19/2010
  • Status: Active Grant
First Claim
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1. A reflector array antenna with cross-polarization compensation comprisinga reflector array consisting of a plurality of elementary radiating elements regularly distributed and forming a reflecting surface;

  • anda primary source intended to illuminate the reflector array;

    whereinthe reflector array having a radiation diagram according to two orthogonal principal polarizations in a chosen direction of propagation with a chosen phase law;

    each elementary radiating element has been produced in planar technology and comprises an etched pattern consisting of at least one metallic patch and/or of at least one radiating slot,the metallic patch comprising, in a symmetric configuration, at least four sides that are pairwise opposite with respect to a center of the etched pattern and are disposed parallel to two directions X, Y of the plane XY of the radiating element, andthe radiating slot comprising, in a symmetric configuration of the radiating element, at least two branches that are diametrically opposite with respect to the center of the etched pattern and are disposed parallel to at least one of the directions X and/or Y of the radiating element; and

    at least one radiating element of the reflector array comprises an etched pattern having a dissymmetric geometric shape with respect to at least one of the directions X and/or Y of the plane XY of the radiating element, the dissymmetry of the etched pattern of the radiating element consisting of an angular inclination of at least one side, respectively of at least one branch, of the geometric shape of the etched pattern with respect to the directions X and/or Y of the plane of the radiating element.

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