发明授权
- 专利标题: Apparatus and method for communicating with an RFID transponder
- 专利标题(中): 用于与RFID应答器通信的装置和方法
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申请号: US13214950申请日: 2011-08-22
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公开(公告)号: US08544740B2公开(公告)日: 2013-10-01
- 发明人: Karl Torchalski , Daniel F. Donato
- 申请人: Karl Torchalski , Daniel F. Donato
- 申请人地址: US IL Lincolnshire
- 专利权人: ZIH Corp.
- 当前专利权人: ZIH Corp.
- 当前专利权人地址: US IL Lincolnshire
- 代理机构: Alston & Bird LLP
- 主分类号: G06K7/00
- IPC分类号: G06K7/00
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 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.
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