Characterization of meta-materials using computational electromagnetic methods

Author

Deshpande, Manohar ; Shin, Joon

Author_Institution

NASA Langley Res. Center, Hampton, VA, USA

fYear

2005

fDate

3-7 April 2005

Firstpage

421

Lastpage

424

Abstract

An efficient and powerful computational method is presented to synthesize a meta-material to specified electromagnetic properties. Using the periodicity of meta-materials, the finite element methodology (FEM) is developed to estimate the reflection and transmission through the meta-material structure for a normal plane wave incidence. For efficient computations of the reflection and transmission over a wide band frequency range through a meta-material a finite difference time domain (FDTD) approach is also developed. Using the Nicholson-Ross method and the genetic algorithms, a robust procedure to extract electromagnetic properties of meta-material from the knowledge of its reflection and transmission coefficients is described. Few numerical examples are also presented to validate the present approach.

Keywords

computational electromagnetics; electromagnetic wave reflection; electromagnetic wave transmission; finite difference time-domain analysis; finite element analysis; genetic algorithms; metamaterials; FEM; Nicholson-Ross method; computational electromagnetic methods; finite difference time domain; finite element methodology; genetic algorithms; metamaterials; normal plane wave incidence; transmission coefficients; Computational electromagnetics; Electromagnetic propagation; Electromagnetic reflection; Finite difference methods; Finite element methods; Genetic algorithms; NASA; Optical materials; Robustness; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Applied Computational Electromagnetics, 2005. IEEE/ACES International Conference on

Print_ISBN

0-7803-9068-7

Type

conf

DOI

10.1109/WCACEM.2005.1469615

Filename

1469615