Dynamic antenna tuning circuit for a radio frequency identification reader
US7936272B2 · kind B2 · utility
9Cited by
9References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 2009 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Apr 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10336
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A resonant antenna circuit for a radio frequency identification (RFID) reader generates an electrical signal for activating a passive identification tag. The identification tag in turn generates a coded electrical signal that is detected by the reader. The electrical characteristics of the resonant circuit are actively and dynamically altered so that the antenna performs more optimally during the transmit and receive intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.