Transponder for half-duplex communication
US6127929A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1998 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Nov 19, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A transponder (30), intended to exchange data during a half duplex communication, includes a coil (3), a capacitor (8) connected to the coil to form a resonant circuit, and processing means (33) arranged to process the data. The transponder further includes switching means (32) arranged so that, under the control of the processing means, the switching means connect the processing means in series with the capacitor and the coil which are connected to form, during the entire duration of the reception phase, a parallel LC circuit and, during the entire duration of the transmission phase, a series LC circuit to optimize the electric power exchanged between an antenna and the processing means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.