Summary
International Symposium on Antennas and Propagation
2009
Session Number:1F2
Session:
Number:1F2-5
Full-Wave Parallel Dispersive Finite-Difference Time-Domain Modeling of Three-Dimensional Electromagnetic Cloaks
Yan Zhao, Yang Hao,
pp.273-276
Publication Date:2009/10/21
Online ISSN:2188-5079
Summary:
Recently, a great deal of attention has been paid to the analysis and design of electromagnetic cloaking structures, since first proposed by Pendry et al. [1]. The specially designed cloak is able to guide waves to propagate around its central region, rendering the objects placed inside invisible to external electromagnetic radiations. Besides the coordinate transformation technique originally used to design the cloak [1, 2], a cylindrical wave expansion technique [3], and a method based on the full-wave Mie scattering model [4,5] have also been applied. In addition, the full-wave finite element method (FEM) based commercial simulation software COMSOL MultiphysicsTM has been extensively used to model different cloaks and validate theoretical predictions [6,7]. So far, the time domain techniques that have been developed to model the cloaking structures include the time-dependent scattering theory [8], the transmission line method (TLM) [9] and the finite-difference time domain (FDTD) method [10]. However due to the computational complexity, so far the FDTD modeling of three-dimensional (3-D) cloaking structures has not been attempted. In this paper, we extend our previously proposed 2-D FDTD method [10] to the 3-D case and develop a parallel dispersive FDTD method to model 3-D cloaking structures.