Method and systems of tagging objects and reading tags coupled to objects
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United States of America Patent
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Jun 25, 2013
Grant Date -
Oct 25, 2012
app pub date -
Jul 2, 2012
filing date -
Mar 22, 2007
priority date (Note) -
In Force
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Abstract
Methods and systems of tagging objects and reading tags coupled to objects. At least some of the illustrative embodiments are systems comprising a reading antenna, a tag reader coupled to the reading antenna, and a radio frequency identification (RFID) tag comprising a tag antenna electromagnetically coupled to the reading antenna. The RFID tag couples to an object such as the body of a living organism or a metallic article. Moreover, the tag antenna has a far-field radiation pattern in a direction away from the object that is substantially unaffected by proximity of the RFID tag to the object, and substantially unaffected by which surface of the RFID tag faces the object.
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