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Omni-directional antenna

  • US 7,443,348 B2
  • Filed: 05/30/2007
  • Issued: 10/28/2008
  • Est. Priority Date: 05/30/2006
  • Status: Expired due to Fees
First Claim
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1. An omni-directional antenna comprising:

  • an electrically conductive ground plane;

    an electrically conductive parasitic disc spaced upwardly apart from the ground plane and parallel thereto; and

    an electrically conductive vertical antenna element extending up through the center of the ground plane and parasitic disc, the vertical element terminating in a tip defining a length above the parasitic disc that is matched to a frequency of interest.

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