RFID tag with enhanced readability
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United States of America Patent
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Nov 20, 2007
Grant Date -
May 5, 2005
app pub date -
Nov 4, 2004
filing date -
Nov 4, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A radio frequency identification (RFID) device includes a conductive antenna structure having an elongated slot therein. Parts of the antenna structure on both sides of one end of the elongated slot are coupled to a wireless communication device, such as an RFID chip or interposer. On the opposite end of the elongated slot, parts of the antenna structure at both sides of the elongated slot are electrically coupled together, for instance by being coupled together by other conductive parts of the antenna structure. All of the parts of the antenna structure may be parts of a continuous unitary layer of conductive material. The antenna structure with the elongated slot therein may facilitate increased readability of the RFID device, particularly in directions out from the edges of the RFID device.
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