Process of making synthetic magnetodielectric with controlled off-normal TE and TM response
US6440244B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jul 7, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Oct 16, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A synthetic magnetodielectric composite material for absorbing electromagnetic radiation has a sheet of fabric having first and second surfaces. The fabric is formed of an insulating material. Magnetically permeable thread is disposed within the fabric. The magnetically permeable thread comprises a material having a permeability substantially greater than the permeability of free space. The fabric is impregnated with resin. The magnetically permeable thread is configured to provide predetermined permittivity and permeability within a selected frequency range, so as to provide desired absorption/transmission of electromagnetic radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.