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RFID tag with enhanced readability

  • US 7,298,343 B2
  • Filed: 11/04/2004
  • Issued: 11/20/2007
  • Est. Priority Date: 11/04/2003
  • Status: Active Grant
First Claim
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1. An RFID device comprising:

  • an antenna structure having a sheet of electrically conductive material extending on both sides of an elongated slot; and

    a wireless communication device having a pair of contact points electrically coupled to respective parts of the conductive material;

    wherein the parts of conductive material are electrically coupled together at a first end of the elongated slot distal from the wireless communication device;

    wherein a second end of the elongated slot is an open end, not short-circuited between the parts;

    wherein the elongated slot has a slot length in a direction in which the slot is elongated, and a slot width in a direction perpendicular to the slot length; and

    wherein the parts of conductive material extending on the sides of the slot along the slot length have a combined antenna width in the direction of the slot width that is greater than the slot width of the slot.

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