ANOMALOUS PROPERTIES OF SCATTERING FROM CAVITIES PARTIALLY LOADED WITH DOUBLE-NEGATIVE OR SINGLE-NEGATIVE METAMATERIALS
- 1 January 2005
- journal article
- Published by The Electromagnetics Academy in Progress In Electromagnetics Research
- Vol. 51, 49-63
- https://doi.org/10.2528/pier04041401
Abstract
In this paper, the theoretical justification and the numerical verification of the anomalous scattering from cavities partially filled with metamaterials are presented. A hybrid numerical formulation based on the Finite Element Method (FEM) and on the Boundary Integral (BI) for the analysis of cavity backed structures with complex loading metamaterials is first presented. The proposed approach allows the analysis of cavities filled with materials described by tensorial linear constitutive relations, which may well describe artificial metamaterials synthesized with proper inclusions in a host dielectric. It is found that cavities loaded with pairs of metamaterial layers with "resonant" features possess unusual scattering properties, and with judicious selection of constitutive parameters for these materials the transparency effect or significant enhancement in the backscattering from such cavities are obtained. This may be considered as a first step towards the analysis of the scattering and radiating features of cavity-backed patch antennas and reflect-arrays in presence of multilayered metamaterial loadsKeywords
This publication has 17 references indexed in Scilit:
- Generalized constitutive relations for metamaterials based on the quasi-static lorentz theoryIEEE Transactions on Antennas and Propagation, 2003
- Ferrite-loaded cavity-backed antennas including nonuniform and nonlinear magnetization effectsIEEE Transactions on Antennas and Propagation, 2003
- Wave propagation in media having negative permittivity and permeabilityPhysical Review E, 2001
- Experimental Verification of a Negative Index of RefractionScience, 2001
- Composite Medium with Simultaneously Negative Permeability and PermittivityPhysical Review Letters, 2000
- Measurement and prediction of helix-loaded chiral compositesIEEE Transactions on Antennas and Propagation, 1999
- Magnetism from conductors and enhanced nonlinear phenomenaIEEE Transactions on Microwave Theory and Techniques, 1999
- Patch antennas on ferromagnetic substratesIEEE Transactions on Antennas and Propagation, 1999
- Low frequency plasmons in thin-wire structuresJournal of Physics: Condensed Matter, 1998
- On the technology of making chiral and bianisotropic waveguides for microwave propagationMicrowave and Optical Technology Letters, 1996