Full-wave parallel dispersive finite-difference time-domain modeling of three-dimensional electromagnetic cloaking structures

JOURNAL OF COMPUTATIONAL PHYSICS

卷:228

Article

Zhao, Yan¹  Hao, Yang¹ 

[1] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England

关键词: Cloak;    Finite-difference time-domain;    Material dispersion;   

DOI  :  10.1016/j.jcp.2009.06.026

来源: Elsevier

【 摘 要 】

A parallel dispersive finite-difference time-domain (FDTD) method for the modeling of three-dimensional (3-D) electromagnetic cloaking structures is presented in this paper. The permittivity and permeability of the cloak are mapped to the Drude dispersion model and taken into account in FDTD simulations using an auxiliary differential equation (ADE) method. It is shown that the correction of numerical material parameters and the slow switching-on of source are necessary to ensure stable and convergent single-frequency simulations. Numerical results from wideband simulations demonstrate that waves passing through a three-dimensional cloak experience considerable delay comparing with the free space propagations, as well as pulse broadening and blue-shift effects. (C) 2009 Elsevier Inc. All rights reserved.

【 授权许可】

Free