Radio wave receiving device with magnetic drive unit and antenna structure and electronic apparatus using the radio wave receiving device
US8040287B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 2009 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Apr 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q7/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radio wave receiving device includes at least one magnetic drive unit and an antenna structure having a narrow core formed of magnetic material and a coil wound around the central part of the core. The device further includes two external magnetic members, each having a connecting part connected magnetically to one end part of the core. One magnetic member has a magnetism collecting part expanded in one side of the antenna structure from the connecting part to exclude the antenna structure, and the other magnetic member has a magnetism collecting part expanded in the other side of the antenna structure from the connecting part to exclude the antenna structure. These external magnetic members cover the drive unit in the both sides and shut off magnetic flux of external magnetic field from the both sides and collect magnetic flux of radio wave on the one end part of the core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.