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COMMUNICATIONS STRUCTURES INCLUDING ANTENNAS WITH FILTERS BETWEEN ANTENNA ELEMENTS AND GROUND SHEETS

  • US 20110294537A1
  • Filed: 05/27/2010
  • Published: 12/01/2011
  • Est. Priority Date: 05/27/2010
  • Status: Active Grant
First Claim
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1. A communications structure comprising:

  • a ground sheet;

    a feed conductor;

    an antenna including an active antenna branch electrically coupled to the feed conductor, and a frequency selective ground sheet extension electrically coupled to the ground sheet, wherein the active antenna branch and the frequency selective ground sheet extension are spaced apart, wherein the active antenna branch and the frequency selective ground sheet extension are arranged along an edge of the ground sheet, wherein the electrical coupling between the active antenna branch and the feed conductor and the electrical coupling between the frequency selective ground sheet extension and the ground sheet are provided adjacent a same end of the edge of the ground sheet, and wherein the frequency selective ground sheet extension is at least about 50% of a length of the edge of the ground sheet; and

    a filter electrically coupled between the frequency selective ground sheet extension and the ground sheet.

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