Scattering from Multi-Layered Metamaterials Using Wave Matrices

Abstract

The complex permittivity (e) and permeability (mu) of a material determine the response of the material to electromagnetic radiation. Usually, the real parts of e and mu are positive for naturally occurring materials at microwave frequencies. Metamaterials are engineered media that are designed to have either a negative permittivity or permeability or both. Negative permeability and negative permittivity would cause electromagnetic waves traveling through this medium to exhibit unusual characteristics such as power flow in a direction opposite to the phase velocity. In this thesis, the wave matrix approach is used to calculate the total reflection and transmission coefficients of a multilayered structure. The method is applicable to all types of materials, including metamaterials. Several layered configurations are studied including both metamaterial and conventional dielectric layers. A MATLAB program is developed to examine the effects of frequency, angle of incidence and polarization. The results are compared to published data. Potential applications of metamaterials are also discussed.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2005
Accession Number
ADA439398

Entities

People

  • Umit Cotuk

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Angle Of Incidence
  • Dielectric Permittivity
  • Doppler Effect
  • Electric Fields
  • Electromagnetic Metamaterials
  • Electromagnetic Radiation
  • Frequency
  • Materials
  • Materials Science
  • Metamaterial Absorbers
  • Metamaterials
  • Negative Index Metamaterials
  • Phase Velocity
  • Radiation
  • Refractive Index
  • Tunable Metamaterials
  • Wave Propagation

Readers

  • Calculus or Mathematical Analysis
  • Nanofabrication and Microfabrication.
  • Wave Propagation and Nonlinear Chaotic Dynamics.

Technology Areas

  • Microelectronics