CG-FFT algorithm for EM scattering by small dielectric particles with high permittivity and permeability
✍ Scribed by Lei Zhao; Tie Jun Cui
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 563 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
We have proposed a fast algorithm to study the electromagnetic (EM) scattering problems involving three‐dimensional dielectric targets with inhomogeneous permittivity and permeability. Based on the volume equivalence principle, coupled volume integral equations are derived for the equivalent electric and magnetic current densities. Such integral equations are then solved using the conjugate gradient method combined with the fast Fourier transform (FFT), where the memory requirement is of the order N ‐ the number of unknowns and the computational complexity is of the order N log N. The accuracy and efficiency of the proposed algorithm are verified by comparing numerical results with analytical results from the Mie series for dielectric spheres. We have applied the algorithm to investigate the EM scattering by small dielectric particles with high permittivity and permeability, which may be important to realize the artificial left‐handed materials. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 305–310, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22116