发明名称 |
Spatially selective UHF near field microstrip coupler device and RFID systems using device |
摘要 |
<p>A system having a UHF RFID transceiver is adapted to communicate exclusively with a single electro-magnetically coupled transponder located in a predetermined confined transponder operating region. The system includes a near field coupling device comprising a plurality of lines connected in parallel with an unmatched load. The near field coupling device may be formed, for example on a printed circuit board with a plurality of electrically interconnected traces and a ground plane. The system establishes, at predetermined transceiver power levels, a mutual electro-magnetic coupling which is selective exclusively for a single transponder located in a defined transponder operating region. Also included are methods for selective communication with the transponder in an apparatus such as a printer-encoder.</p> |
申请公布号 |
EP1820659(B1) |
申请公布日期 |
2012.05.02 |
申请号 |
EP20070108946 |
申请日期 |
2004.08.26 |
申请人 |
ZIH CORP. |
发明人 |
DONATO, DANIEL, F.;GAWELCZYK, ROBERT;HOHBERGER, CLIVE, P.;TORCHALSKI, KARL;TSIRLINE, BORIS, Y. |
分类号 |
B41J29/393;G06K1/12;G06K7/00;G06K7/08;G06K7/10 |
主分类号 |
B41J29/393 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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