RFID relay antenna, RFID system, container, disposition method, communication confirmation method, and package construction
US7439863B2 · kind B2 · utility
11Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2005 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Aug 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07749
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an RFID system including an RFID tag and an RFID reader for performing wireless communications with the RFID tag, an RFID relay antenna has a first loop antenna for electromagnetic induction coupling with an antenna at the RFID tag, a second loop antenna that is provided apart from the first loop antenna and for electromagnetic induction coupling with an antenna at the RFID reader, and wires for connecting the first loop antenna and the second loop antenna so as to form one closed loop and for conveying an induced current generated at the first and second loop antennas to the second and first loop antennas, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.