Signal line structure for a radio-frequency identification system
US8289163B2 · kind B2 · utility
6Cited by
54References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2007 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Apr 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention provides one or more signal line structures that produce an electromagnetic field having a magnitude of at least an interrogation threshold of a radio frequency identification (RFID) tag for a substantial portion of an interrogation region. The signal lines may be made from copper and laid across a shelf in a storage area. The electromagnetic field may cause the tag to backscatter radio frequency (RF) signals to an RFID reader via the signal line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.