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International Journal of Antennas and Propagation
Volume 2013 (2013), Article ID 501413, 6 pages
http://dx.doi.org/10.1155/2013/501413
Research Article

Scattering Analysis of Electromagnetic Materials Using Fast Dipole Method Based on Volume Integral Equation

College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received 28 November 2012; Accepted 16 January 2013

Academic Editor: Ahmed A. Kishk

Copyright © 2013 Xiaoqiao Deng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The fast dipole method (FDM) is extended to analyze the scattering of dielectric and magnetic materials by solving the volume integral equation (VIE). The FDM is based on the equivalent dipole method (EDM) and can achieve the separation of the field dipole and source dipole, which reduces the complexity of interactions between two far groups (such as group and group ) from to , where and are the numbers of dipoles in group and group , respectively. Targets including left-handed materials (LHMs), which are a kind of dielectric and magnetic materials, are calculated to demonstrate the merits of the FDM. Furthermore, in this study we find that the convergence may become much slower when the targets include LHMs compared with conventional electromagnetic materials. Numerical results about convergence characteristics are presented to show this property.