Wave propagation, refraction, and focusing phenomena in Lorentzian double-negative materials:: A theoretical and numerical study

被引：13

作者：

Kärkkäinen, MK ^{[1
]}

Maslovski, SI ^{[1
]}

机构：

[1] Aalto Univ, Radio Lab, Helsinki 02015, Finland

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2003年 / 37卷 / 01期

关键词：

FDTD; double negative materials; negative refraction; causality; backward waves;

D O I：

10.1002/mop.10807

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：

Electromagnetic effects in double-negative (DNG) materials are considered from the theoretical and numerical points of view. Special attention is given to the causality aspects. The refracton of a cylindrical wave excited by a line source placed above a plane DNG slab and the wave propagation through the slab are studied. The DNG material response is modelled by the resonant constitutive parameters of the Lorentzian form. A novel technique for discretization of the constitutive equations is proposed. The negative refraction and slab focusing phenomena are clearly seen from the simulations. (C) 2003 Wiley Periodicals, Inc.

引用

页码：4 / 7

页数：4

共 8 条

[1]

Landau L. D., 1984, ELECTRODYNAMICS CONT, P287

[2] Negative refraction makes a perfect lens [J].