Broadband electromagnetic energy absorber
US5214432A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1990 |
| Grant date | May 25, 1993 |
| Priority date | — |
| Expiry date | Feb 16, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q15/0026
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radar absorbing material comprising multiple layers integrated to form a thin, flexible, and lightweight structure. The material includes a substrate having disposed thereon absorber elements that are resistively loaded to enable one to construct a device relatively small and thin size. The broadbanding of the device is carried out by multilayering concepts in which different size antenna patterns are multilayered with each layer designed to absorb frequencies in a specified range. The absorber elements are selected for their intrinsic impedance properties and preferrably be polarization insensitive. These absorber elements are disposed in a random and preferrably aperiodic pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.