Radio frequency interface device for a transponder
US6011488A · kind A · utility
17Cited by
5References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1998 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Jan 26, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/103
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This radiofrequency interface device (1) for a transponder, comprises a coil (2) forming the antenna of the transponder and a voltage converting circuit (4) connected, on the one hand to the terminals (5, 6) of said coil (2) and, on the other hand, to continuous voltage supply terminals (V.sub.dd, V.sub.ss) of an integrated logic circuit (7) of the transponder, and is characterised in that the terminals (5, 6) of the coil (2) are connected to floating potentials with respect to the substrate of the transponder, so that none of the terminals (5, 6) of the coil (2) passes below the potential (V.sub.ss) of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.