Multi-band RFID encoder
US7342499B2 · kind B2 · utility
20Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2006 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0407
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a multi-band near-field antenna for an RFID encoder includes a substrate; an internal coil antenna defined within the substrate; an annular ground plane defined on a first surface of the substrate; a second ground plane defined on an opposing second surface of the substrate, wherein the annular ground plane and the second ground plane form a Faraday cage for the internal coil antenna; and a second antenna disposed on the opposing second surface within the annulus defined by the annular ground plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.