Communications: radio wave antennas – Antennas – Having electric space discharge device
Reexamination Certificate
2005-07-26
2005-07-26
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
Having electric space discharge device
C343S741000, C343S742000, C343S866000, C343S743000, C343S868000, C343S870000, C340S572100, C340S568100, C340S870030, C340S870030, C340S870030, C340S691600
Reexamination Certificate
active
06922173
ABSTRACT:
A scanner has plasma loop or plasma window antennas for selectively scanning for ID tags along distinct radials of the scanner. Scanner elements are made electromagnetically invisible to adjacent elements by removing power or lowering plasma densities so that the scanner elements do not interfere with its own operation. Activatable ID tags and a shipping container suitable for scanning with electromagnetic energy are also disclosed.
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Chen Shih-Chao
Notaro & Michalos P.C.
Tran Chuc
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