WIRELESS IDENTIFICATION TAG HAVING CIRCULARLY POLARIZED PLANAR ANTENNA
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United States of America Patent
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-
N/A
Issued Date -
Oct 25, 2012
app pub date -
Nov 4, 2011
filing date -
Apr 21, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A wireless identification tag having circular polarization planar antenna is disclosed. The wireless identification tag includes a conductive substrate and a wireless identification device. The conductive substrate includes a first slot portion, a second slot portion, and a third slot portion. The first slot portion, the second slot portion, and the third slot portion pass through the conductive substrate. The first slot portion and the second slot portion stretch in a first direction and a second direction, respectively. The angle between the first direction and the second direction is between 45 degrees and 135 degrees. The third slot portion is connected between the first slot portion and the second slot portion. The wireless identification device is disposed in the first slot portion or the second slot portion. The wireless identification device is used to transmit or receive an electric wave.
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