Radiofrequency antennae and identification tags and methods of manufacturing radiofrequency antennae and radiofrequency identification tags
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United States of America Patent
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May 20, 2008
Grant Date -
Jan 26, 2006
app pub date -
May 11, 2005
filing date -
May 14, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention includes improved RFID antennae and tags and methods of manufacturing the RFID antennas. The RFID tags of the present invention include a substrate that comprises an antenna assembly. A radiofrequency integrated circuit is in electrical communication with a portion of the antenna assembly. The RFID tag may include a structure, such as a lid element, that clamps and/or compresses the radiofrequency integrated circuit into contact with the antenna assembly, without the need for a conductive adhesive. In some embodiments, the antenna assembly is vacuum metallized or otherwise applied onto the substrate through patterned openings in a mask, such as a patterned masking cliche or a patterned polymer layer.
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