Full Wave Analysis of Composite Absorbing Layers

Author

Meiners, Christian ; Jacob, Arne F.

Author_Institution

Inst. fur Hochfrequenztechnik, Technische Univ. Hamburg-Harburg, Hamburg

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

1011

Lastpage

1014

Abstract

A two layer absorbing structure is investigated. It is built from small lossy dielectric spheres. Their density is adjusted such that the wave impedance increases linearly. The different layers are further loaded with metallic helices. These give high losses at resonance. A scattering approach based on the dipole-polarizabilities of the helices and the Mie-solution of the dielectric spheres is compared to the Maxwell-Garnett theory. It is shown that due to strong mutual coupling some differences arise. These are assessed in view of design considerations for such materials

Keywords

Mie scattering; absorbing media; chirality; electromagnetic wave scattering; inhomogeneous media; Maxwell-Garnett theory; Mie-solution; absorbing media; chiral media; composite absorbing layers; dipole-polarizabilities; electromagnetic scattering; full wave analysis; metallic helices; mutual coupling; nonhomogeneous media; small lossy dielectric spheres; Dielectric losses; Dielectric materials; Electromagnetic reflection; Electromagnetic scattering; Impedance; Mie scattering; Mutual coupling; Nonhomogeneous media; Particle scattering; Resonance; Absorbing media; chiral media; electro-magnetic scattering; helices; nonhomogeneous media; simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281094

Filename

4057993