A Radially-Dependent Dispersive Finite-Difference Time-Domain Method for the Evaluation of Electromagnetic Cloaks

被引：39

作者：

Argyropoulos, Christos ^{[1
]}

Zhao, Yan ^{[1
]}

Hao, Yang ^{[1
]}

机构：

[1] Univ London, Dept Elect Engn, Antenna Engn Grp, London E1 4NS, England

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2009年 / 57卷 / 05期

关键词：

Cloaking; finite-difference time-domain (FDTD); metamaterials; SCATTERING;

D O I：

10.1109/TAP.2009.2016704

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A radially-dependent dispersive finite-difference time-domain (FDTD) method is proposed to simulate electromagnetic cloaking devices. The Drude dispersion model is applied to model the electromagnetic characteristics of the cloaking medium. Both lossless and lossy cloaking materials are examined and their operating bandwidth investigated. It is demonstrated that the perfect "invisibility" of electromagnetic cloaks is only available for lossless metamaterials and within an extremely narrow frequency band.

引用

页码：1432 / 1441

页数：10

共 48 条

[1] Achieving transparency with plasmonic and metamaterial coatings -: art. no. 016623 [J].