发明名称 |
Apparatus and method for communicating with an RFID transponder |
摘要 |
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 electromagnetic 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. |
申请公布号 |
US8596532(B2) |
申请公布日期 |
2013.12.03 |
申请号 |
US20050121208 |
申请日期 |
2005.05.03 |
申请人 |
TORCHALSKI KARL;DONATO DANIEL F.;ZIH CORP. |
发明人 |
TORCHALSKI KARL;DONATO DANIEL F. |
分类号 |
G06F3/12;B41J3/407;G06K17/00 |
主分类号 |
G06F3/12 |
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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