Antenna and electronic device
US7659858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2007 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Jul 24, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/273
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An electronic device which includes a radio wave impermeably cylindrical case, a radio wave permeable cover covering an opening in one end of the case, a radio wave impermeable cover covering an opening in the other end of the case, and a circuit board and an antenna, both arranged between the two covers in the inner space. The antenna is connected to the board and includes an elongated core and a coil wound around an intermediate portion of the core. Magnetic flux introducing portions are provided on both end portions of the core, a radio wave permeable partition plate is arranged between the permeable cover and the antenna in the inner space, and a pair of flat and magnetic members are arranged between the partition plate and the antenna in the inner space and are magnetically connected to the flux introducing portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.