Antenna array for an RFID reader compatible with transponders operating at different carrier frequencies
US7439862B2 · kind B2 · utility
91Cited by
13References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2004 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Oct 8, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10356
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An antenna array is provided for an RFID reader, which includes a first reader antenna tuned to operate at a first frequency and a second reader antenna tuned to operate at a second frequency different from the first frequency. The first and second antennas are preferably arranged in an overlapping arrangement or an opposing magnetic flux arrangement to reduce the effect of antenna self resonance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.