Antenna coil
US7755558B2 · kind B2 · utility
13Cited by
12References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2007 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Nov 8, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2003/005
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The size of an antenna coil is reduced, and it is possible to prevent a lowering of the reception sensitivity due to a difference of the arrangement position of the antenna coil. On a winding frame of a ferrite core, a first coil and a second coil are wound in such a manner that their winding axes orthogonally intersect each other. A third coil is wound around an outer circumference of the first coil and the second coil in such a manner that the third coil's winding axis orthogonally intersects the winding axes of the first coil and the second coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.