High-performance matched absorber using magnetodielectrics
US6146691A · kind A · utility
5Cited by
5References
4Claims
0Family size
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Key dates
| Filing date | Jan 4, 1995 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Jan 4, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/256
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A composite electromagnetic absorber provides increased EMR absorption while being thinner and/or lighter than prior art EMR absorbers. To accomplish this, synthetic dielectric materials are combined with either synthetic magnetic materials or magnetically lossy materials in such a way that the permittivity and permeability of the composite material are substantially matched over the desired range of frequency. The match in the permittivity and permeability allows the majority of the electromagnetic fields to enter the material where the electric and magnetic loss components absorb the electromagnetic energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.