Devices to reduce electro-magnetic field radiation
US6646198B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Jan 4, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K9/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for reducing electromagnetic field radiation from an electrically conducting enclosure is disclosed. The apparatus comprises an electrically conducting element having two extremities and in which the electromagnetic field radiation induces a current, and an electrical resistance connected between the two extremities of the electrically conducting element so as to absorb the electromagnetic field radiation. In an embodiment to absorb electric field energy, the element is a substantially linear conducting element which absorbs electric field radiation and the electrical resistance has a direct electrical connection to a first extremity of the electrically conducting element. In an embodiment to absorb magnetic field energy, the element is a substantially circular conducting element which absorbs magnetic field radiation, each end of the electrical resistance having a direct connection to a respective extremity of the substantially circular conducting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.