| From electromagnetic bandgap to left-handed metamaterials： modelling and applications |
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| 引用本文： | 郝阳.From electromagnetic bandgap to left-handed metamaterials： modelling and applications[J].浙江大学学报(A卷英文版),2006,7(1):34-40. |
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| 作者姓名： | 郝阳 |
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| 作者单位： | The Department |
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| 基金项目： | Project supported by the Royal Society, the Engineering and PhysicsScience Research Council (EPSRC) and the Leverhulme Trust, UK |
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| 摘 要： | INTRODUCTION Electromagnetic crystal structures (ECSs) offer the opportunity to control and manipulate electro- magnetic wave propagation as a result of their being formed from small-scale periodic geometric struc- tures. This detailed microscopic configuration can be designed to cause the material (macroscopically) to exhibit either effective permittivity or permeability that is negative over a finite frequency range. This modifies the dispersion relation of electromagnetic waves and a …
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| 关 键 词： | 电磁晶体 左旋材料 能带隙 LHMs 数值模拟 有限元 |
| 收稿时间： | 2005-10-23 |
| 修稿时间： | 2005-11-15 |
An error resilient scheme for H.264 video coding based on distortion estimated mode decision and nearest neighbor error concealment |
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| Lee?Tien-hsu,Wang?Jong-tzy,Chen?Jhih-bin,Chang?Pao-chi.An error resilient scheme for H.264 video coding based on distortion estimated mode decision and nearest neighbor error concealment[J].Journal of Zhejiang University Science,2006,7(1):34-40. |
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| Authors: | Lee Tien-hsu Wang Jong-tzy Chen Jhih-bin Chang Pao-chi |
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| Institution: | (1) The Department of Electronic Engineering, Queen Mary College University of London, London, UK |
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| Abstract: | In this paper, numerical modelling of left-handed materials (LHMs) is presented using in-house and commercial software packages.
Approaches used include the finite-difference time-domain (FDTD) method, finite element method (FEM) and method of moments
(MoMs). Numerical simulation includes verification of negative refraction and “perfect lenses” construction, investigation
of evanescent wave behaviour in layered LHMs, reversed Snell’s Law in electromagnetic band gap (EBG)-like structures and construction
of LHMs using modified split ring resonators (SRRs). Numerical results were verified to be in good agreement with theory.
At the end of this paper, potential applications of LHMs in microwave engineering are discussed. |
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| Keywords: | Numerical modelling Electromagnetic crystals Bandgap Left-handed materials (LHMs) |
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