Analysis and design on EM wave absorption by stratified construction materials - a case of vertically incident wave

Author

Ishii, Naohiro ; Miyakawa, Michio ; Sakai, Koji

Author_Institution

Fac. of Eng., Niigata Univ., Japan

Volume

2

fYear

2003

fDate

18-22 Aug. 2003

Firstpage

800

Abstract

It is known that EM waves are largely absorbed at discrete frequencies, which we can call absorbing frequencies, when a plane wave is normally incident onto the surface of the stratified structure which consists of two low-loss construction materials. In this paper, an approximate analysis on the absorption will be given and a design formula and a design diagram for the structural parameters will be presented. Furthermore, formulae for the Q-factor concerned with the absorption and the change in the absorbing frequency due to the change of the effective dielectric constant of the composite construction material by the perturbation method will be derived.

Keywords

composite materials; electromagnetic wave absorption; finite difference time-domain analysis; nonradiative dielectric waveguides; perturbation theory; EM wave absorption; Q-factor; absorbing frequency; composite construction material; cutoff frequency; effective dielectric constant; electromagnetic absorption; low-loss material; nonradiative dielectric waveguide; perturbation method; plane wave; stratified construction materials; structural parameter; vertically incident wave; Absorption; Building materials; Composite materials; Dielectric constant; Dielectric materials; Frequency; Perturbation methods; Q factor; Structural engineering; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2003 IEEE International Symposium on

Print_ISBN

0-7803-7835-0

Type

conf

DOI

10.1109/ISEMC.2003.1236710

Filename

1236710