Combined HF and UHF RFID device
US8646695B2 · kind B2 · utility
23Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2011 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Oct 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0779
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A wearable RFID device is configured with a geometry and materials that allow an HF RFID system and a UHF RFID system to operate in close proximity to a human body and to each other with minimal impact on performance. An RFID device may have a three-dimensional, multi-planar UHF antenna incorporated into a dielectric core with an HF antenna, or a single-plane UHF antenna separated from an HF antenna by a rigid spacer. A conductive metal backplane is disposed adjacent the wearable RFID device to improve antenna performance when disposed in close proximity to an absorbing body, such as a human being.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.