| Review:Broad-bandwidth and low-loss metamaterials:theory, design and realization |
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| 作者姓名： | 李乐伟 姚海英 吴群 陈志宁 |
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| 作者单位： | Department of Electrical and Computer Engineering The National University of Singapore 119260 Singapore Department of Electronics and Communications Engineering Harbin Institute of Technology Harbin 150001 China，Department of Electrical and Computer Engineering The National University of Singapore 119260 Singapore，Department of Electronics and Communications Engineering Harbin Institute of Technology，Harbin 150001 China，Department of Electrical and Computer Engineering The National University of Singapore 119260 Singapore Institute for Infocomm Research 117674 Singapore |
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| 摘 要： | INTRODUCTION Conventional materials have positive magnetic permeability and mostly positive electrical permittiv- ity. Veselago (1968) initially assumed a material with negative permittivity and permeability simultane- ously and theoretically demonstrated the abnormal electromagnetic properties. This material, referred to as left-handed material (LHM) or metamaterial, re- verses a basic feature of light, such as, the reversal of the Doppler shift for radiation, and negative refractive in…
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Broad-bandwidth and low-loss metamaterials:theory, design and realization |
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| LI Le-wei,YAO Hai-ying,WU Qun,CHEN Zhi-ning.Review:Broad-bandwidth and low-loss metamaterials:theory, design and realization[J].Journal of Zhejiang University Science,2006,7(1). |
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| Authors: | LI Le-wei YAO Hai-ying WU Qun CHEN Zhi-ning |
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| Abstract: | In this paper, we summarize some recent activities in the field of metamaterial research at the National University of Singapore (NUS). Integral equations are applied for electromagnetic modelling of supernatural materials. Some special charac- teristics of the metamaterials are shown. Moreover, quasi-static Lorentz theory and numerical method (i.e., the method of moments for solving the electric field integral equation) and the transmission line theory are both presented to obtain the effective consti- tutive relations of metamaterials, respectively. Finally, feasibility of fabricating metamaterials based on analysis of equivalent transmission line model in the microwave spectrum and even higher is also shown and correspondingly some broad-bandwidth and low-loss metamaterial structures are designed and synthesized. |
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| Keywords: | Metamaterials Electric field integral equation (EFIE) Transmission line theory (TLT) Quasi-static Lorentz theory |
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