| Bragg reflectors based on alternate RHTL-LHTL structures |
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| 作者姓名： | 邹勇卓 胡鑫 姚军 FORSBERG Erik |
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| 作者单位： | State Key Laboratory of Modern Optical Instrumentation Zhejiang University，Hangzhou 310027 China，State Key Laboratory of Modern Optical Instrumentation Zhejiang University，Hangzhou 310027 China，State Key Laboratory of Modern Optical Instrumentation Zhejiang University，Hangzhou 310027 China，State Key Laboratory of Modern Optical Instrumentation Zhejiang University，Hangzhou 310027 China |
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| 基金项目： | Project (No. 2004CB719802) supported by the National Basic Re-search Program (973) of China |
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| 摘 要： | INTRODUCTION Left-handed materials (LHMs) with negative permittivity and negative permeability, first theo- retically investigated by Veselago (1968), have at- tracted much interest in the past few years (Smith et al., 2000; Pendry, 2000). Such materials were first implemented using a structure which combined pe- riodic arrays of metallic lines and split ring resonators (SRRs) (Shelby et al., 2001). Since then much work has been dedicated to fabricating such materials. These new artif…
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| 关 键 词： | 布拉格反射镜 左旋材料 右旋材料 输电线路 RHTL LHTL |
| 收稿时间： | 2005-11-04 |
| 修稿时间： | 2005-12-01 |
Bragg reflectors based on alternate RHTL-LHTL structures |
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| Yong-zhuo Zou,Xin Hu,Jun Yao,Erik Forsberg.Bragg reflectors based on alternate RHTL-LHTL structures[J].Journal of Zhejiang University Science,2006,7(1):81-84. |
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| Authors: | Yong-zhuo Zou Xin Hu Jun Yao Erik Forsberg |
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| Institution: | (1) State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, 310027, China |
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| Abstract: | New types of Bragg reflectors, multilayered periodic structures, based on alternating left-handed transmission line (LHTL) and right-handed transmission line (RHTL) are proposed. These new structures based on ideal microstrip TLs and L-C lumped elements, are designed and analyzed. We report on unusual narrow transmission bands in such kind of structures. In such multilayered structures both Bragg reflectance and the Fabry-Perot resonance exist and the phenomenon of unusual transmission is a result of competition between these two transmission effects, in which the Fabry-Perot resonance is dominant. According to our simulation results we find that this unusual transmission property exits no matter if the electrical length of the LHTL layer cancels the electrical length of the RHTL layer or not. |
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| Keywords: | Bragg reflector Left-handed transmission line (LHTL) Right-handed transmission line (RHTL) L-C lumped ele- ments Narrow bands |
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