Radar Absorbing Applications of Metamaterials

Radar absorbing materials (RAM) is used to camouflage or shield highly reflective surfaces such metallic surfaces from incident electromagnetic (EM) waves. In this paper, we explore the applications of metamaterials as conformal RAM coatings for controlling the reflection of EM waves from metal surf...

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Bibliographic Details
Published in2007 IEEE Region 5 Technical Conference pp. 105 - 108
Main Author Varadan, V.V.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2007
Subjects
Coatings
Electromagnetic reflection
Electromagnetic scattering
Electromagnetic shielding
Free Space Measurements
Frequency selective surfaces
Frequency Selective Surfaces (FSS)
Inorganic materials
Metamaterials
Optical reflection
Radar Absorbing Materials (RAM)
Radar applications
Surface waves
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ISBN142441279X
9781424412792
DOI10.1109/TPSD.2007.4380361

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Summary:Radar absorbing materials (RAM) is used to camouflage or shield highly reflective surfaces such metallic surfaces from incident electromagnetic (EM) waves. In this paper, we explore the applications of metamaterials as conformal RAM coatings for controlling the reflection of EM waves from metal surfaces. Metamaterials are engineered materials with specially designed metallic resonant structures that are much smaller than the wavelength of incident microwaves (MW) and effectively such materials may negative permittivity and/or permeability. For the first time, we also explore the experimental use of metamaterials as conformal Frequency Selective Surfaces (FSS). Using a specially designed free space focused microwave beam automated scanning system, the reflection reduction properties of metamaterials are demonstrated for oblique angles of incidence and for orthogonal polarizations.
ISBN:142441279X
9781424412792
DOI:10.1109/TPSD.2007.4380361