Inductively tunable antenna for a radio frequency identification tag
US6480110B2 · kind B2 · utility
112Cited by
15References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Dec 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2021/125
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A radio frequency identification tag having a step-tunable inductor for tuning a parallel resonant antenna circuit of the radio frequency identification tag to a desired frequency. The step-tunable inductor comprises a plurality of branches in which each branch is adapted for adjusting the step-tunable inductor to a desired inductance value for resonating the parallel antenna circuit to a carrier frequency of a tag interrogator/reader.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.