Invention Grant
- Patent Title: Spatially selective UHF near field microstrip coupler device and RFID systems using device
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Application No.: US13712829Application Date: 2012-12-12
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Publication No.: US09852318B2Publication Date: 2017-12-26
- Inventor: Boris Y. Tsirline , Clive P. Hohberger , Robert Gawelczyk , Daniel Donato
- Applicant: ZIH Corp.
- Applicant Address: US IL Lincolnshire
- Assignee: ZIH Corp.
- Current Assignee: ZIH Corp.
- Current Assignee Address: US IL Lincolnshire
- Main IPC: H04B5/00
- IPC: H04B5/00 ; H01Q1/22 ; H04W24/00 ; G06F15/12 ; G06F7/10 ; G06K7/10 ; G06K1/12 ; G06K7/00 ; G06K17/00

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
- US20140002243A1 Spatially Selective UHF Near Field Microstrip Coupler Device And RFID Systems Using Device Public/Granted day:2014-01-02
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