Antenna unit having radio absorbing device
US6788255B2 · kind B2 · utility
6Cited by
3References
27Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 24, 2002 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Jul 24, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0407
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna unit includes a substrate having an antenna device and a radio absorbing device. The antenna device, substrate and radio absorbing device are constructed of a patch device, a conductive material and ferrite, respectively. The radio absorbing device is attached to the rear surface of the substrate. The radio absorbing device reduces incoming radio wave signals to travel to the rear surface of the substrate due to reflections by surrounding metal parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.