RFID tag with tunable antenna and associated reader
US7339481B2 · kind B2 · utility
19Cited by
2References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2004 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Dec 7, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one exemplary embodiment of the present invention a RFID tag for use in environments that cause antenna detuning is disclosed. The RFID tag comprises an antenna configured to receive radio frequency signals and an adjustable impedance adder coupled to the antenna. The impedance adder is configured to provide a needed amount of impedance to the antenna to compensate for detuning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.