Antenna coil with reduced electrical field
US6034651A · kind A · utility
9Cited by
5References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1998 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Nov 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10336
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An antenna coil with low electrical field emissions comprises a flat winding with a specified shape and a conductive screen facing the winding. The conductive screen has substantially the same shape as the winding, and includes a cut-off zone. The screen neutralizes the parasitic electrical field emitted by the winding without disturbing the useful magnetic field which is axially oriented (i.e., oriented perpendicularly to the plane of the coil). Such an antenna coil is applicable to a station for the transmission-reception of data by inductive coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.