Invention Grant
- Patent Title: Apparatus and method for communicating with an RFID transponder
- Patent Title (中): 用于与RFID应答器通信的装置和方法
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Application No.: US13214950Application Date: 2011-08-22
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Publication No.: US08544740B2Publication Date: 2013-10-01
- Inventor: Karl Torchalski , Daniel F. Donato
- Applicant: Karl Torchalski , Daniel F. Donato
- Applicant Address: US IL Lincolnshire
- Assignee: ZIH Corp.
- Current Assignee: ZIH Corp.
- Current Assignee Address: US IL Lincolnshire
- Agency: Alston & Bird LLP
- Main IPC: G06K7/00
- IPC: G06K7/00

Abstract:
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.
Public/Granted literature
- US20120038951A1 APPARATUS AND METHOD FOR COMMUNICATING WITH AN RFID TRANSPONDER Public/Granted day:2012-02-16
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