Characterization of Meta-Materials Using Computational Electromagnetic Methods

Abstract

An efficient and powerful computational method is presented to characterize a meta-material in terms of its specified electromagnetic properties. Using the periodicity of meta-materials, the Finite Element Methodology (FEM) is developed to estimate reflection and transmission through the meta-material structure for a normal plane wave incidence. For efficient computations of reflection and transmission through a meta-material over a wideband frequency range, a Finite Difference Time Domain (FDTD) approach is developed. Using the Nicholson-Ross method and Genetic Algorithms, a robust procedure to extract the electromagnetic properties of meta-materials from knowledge of their reflection and transmission coefficients is described. Numerical examples are presented to validate the approach.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2005
Accession Number
ADA447563

Entities

People

  • Joon Shin
  • Manohar Deshpande

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Abstracts
  • Coefficients
  • Computational Science
  • Computer-Aided Design
  • Doppler Effect
  • Electric Fields
  • Electromagnetic Fields
  • Finite Difference Time Domain
  • Frequency
  • Genetic Algorithms
  • High Resolution
  • Inclusions
  • Materials
  • Reflection
  • Time Domain
  • Wave Propagation
  • Waves

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Combustion Dynamics and Shock Wave Physics.
  • Microwave Engineering.

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference
  • AI & ML - Neural Networks
  • Biotechnology