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Antenna system for radio frequency identification

  • US 7,345,642 B2
  • Filed: 01/09/2006
  • Issued: 03/18/2008
  • Est. Priority Date: 10/22/2003
  • Status: Expired due to Fees
First Claim
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1. An antenna comprising:

  • first and second electrically conductive portions defined substantially by a self-similar geometry present at multiple resolutions, each electrically conductive portions include first and second portions, wherein the first and second portions of each electrically conductive portion are substantially mirror images of the first and second portions of the other electrically conductive portion, wherein each of the first and second portions consists of a trace and has two and more angular bends, and each bend has a distal end and a proximal end, wherein in each electrically conductive portion, the proximal ends are connected to the trace, and the distal ends of the first electrically conductive portion abut the distal ends of second electrically conductive portion along a line dividing the first and second electrically conductive portions, and wherein the distal ends of the first and second electrically conductive portions are offset from one another along the line by a distance substantially equal to the thickness of the corresponding angular bend, forming a closed pattern, wherein the electrically conductive portions are configured to radiate broadband electromagnetic energy; and

    an electrically non-conductive portion that structurally supports the electrically conductive portion.

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