Periodic finite-difference time-domain analysis of loaded transmission-line negative-refractive-index metamaterials

被引：28
|
作者：
Kokkinos, T [1 ]
Sarris, CD [1 ]
Eleftheriades, GV [1 ]
机构：
[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2005年 / 53卷 / 04期
基金：
加拿大自然科学与工程研究理事会;
关键词：
dispersion; finite difference time domain (FDTD); negative refractive index (NRI);
D O I：
10.1109/TMTT.2005.845197
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：
In this paper, a systematic methodology is proposed for the full-wave time-domain analysis of planar, loaded transmission-line (TL)-based negative-refractive-index (NRI) media. Lumped inductors and capacitors are incorporated in a finite-difference time-domain (FDTD) mesh via an "extended FDTD" approach, combining Maxwell's equations with lumped-element voltage-current characteristics. The analysis is facilitated by periodic boundary conditions that restrict the simulated domain to,a single unit cell of the periodic loaded TL grid. Thus, fast numerical characterization of the NRI, structures under study is attained. The proposed technique is successfully compared to measured results and is proven to consist of an effective tool for the rigorous explanation of experimental observations through the dispersion analysis and computation of modal patterns and relative strengths of the types of waves supported by an NRI medium.
引用
收藏
页码：1488 / 1495
页数：8
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