Variable-Q antenna coil circuit for RFID applications
US11728847B2 · kind B2 · utility
14Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Oct 16, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/45
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A passive radio frequency identification (RFID) reader is configured to dynamically vary the Q factor of its resonant antenna coil circuit in order to optimize its performance under different conditions. This RFID reader suitably provides optimal performance for both transponder reading and transponder writing operations, rather than being designed for optimal performance for only one operation or the other, or some fixed compromise between them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.