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RFID antenna system and method

  • US 9,300,032 B2
  • Filed: 10/31/2007
  • Issued: 03/29/2016
  • Est. Priority Date: 10/31/2007
  • Status: Expired due to Fees
First Claim
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1. A radio frequency identification (RFID)/electronic article surveillance (EAS) device, the device comprising:

  • a spacing element comprising a planar body with a predetermined thickness and formed of a dielectric material to define first and second major faces which are opposed to each other, the planar body having an EAS element embedded therein;

    a dielectric substrate body distinct from the spacing element, the dielectric substrate body defining an elongated length which includes a first surface and a second surface comprising opposing major sides of the dielectric substrate body;

    an RFID integrated circuit disposed on the dielectric substrate body;

    a dipole antenna disposed on the dielectric substrate body, the dipole antenna comprised of a first conductive element and a second conductive element, each electrically connected to the RFID integrated circuit, and each respectively extending away from the RFID integrated circuit along said elongated length of the dielectric substrate body in first and second opposing directions;

    each of the first and second conductive elements respectively comprise an inner length proximal to the RFID integrated circuit, and an outer length spaced apart from the RFID integrated circuit a greater distance along the elongated length as compared to the inner length;

    the elongated length of the dielectric substrate body is wrapped around at least a portion of the spacing element so that first surface is in contact with both the first and second faces of the spacing element; and

    wherein the dielectric substrate body is positioned so that the RFID integrated circuit and the inner length of each of the first and second conductive elements are adjacent to the first major face of the spacing element, and the outer length of each of the first and second conductive elements are disposed adjacent to the second major face of the spacing element.

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