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一种新型的双频带左手材料的设计
陈诚 杨荣草 薛文瑞 张文梅
山西大学物理电子工程学院 山西省 太原市 030006
摘要本文利用十字型金属线和改造的开口谐振环设计了一种新型左手材料,通S
参数反演法进行参数提取表明,这种结构的左手材料可以在 GHz 波段出现两个负
折射频带。另外,数值分析了结构参数对负折射率频带的影响,结果发现,该结
构能否出现双频段的负折射特性与谐振环对的开口大小直接有关;相对于其它参
数,谐振环的宽度和开口大小对负折射率频带产生影响较大。该研究结果表明,
通过选择合适的结构参数,该左手材料可以实现双频段的负折射特性。
关键词 左手材料; 负折射; 双频段; S 参数
中图分类号 O441 文献标识码 A
Design of a Novel Dual-Band Left-Handed Metamaterial
Chen Cheng Yang Rongcao Xue Wenrui Zhang Wenmei
College of Physics and Electronic Engineering, Shanxi University, Taiyuan, Shanxi
030006, China
Abstract In this paper, we propose a novel left-handed
metamaterial(LHM), which composed of metal cross wires and
reshaped split ring resonators. It is demonstrated that the
proposed structure may present a Gigahertz DualBand with negative
refraction index by the retrieved S-parameter method. Moreover,
we numerically investigate the influence of the main structure
parameters on the negative dual bands and find that the presence
of dual bands for such a LHM is directly related to the gaps of
the split ring resonators; Compared with the other size parameters,
the width and gaps of the split ring resonators have more influence
on the negative dual bands. The obtained results suggest that the
proposed LHM may realize the dual-band negative refraction by
adjusting the appropriate structure parameters.
Keywords left-handed materials; negative refraction; dual-band;
S-parameters
OCIS Codes 160.3918; 350.3618; 260.2110
收稿日期:年-月-日;收到修改稿日期:年-月-日
基金项目:国家自然科学基金(NO. 61178013);山西省回国留学人员科研资助项目(NO.
2011‐002); 山西省自然科学基金(NO.2010011003‐1)资助课题。
作者简介:陈诚(1987 —),男,硕士研究生,主要从事超材料方面的研究。
Email:chencheng810@163.com
导师简介:杨荣草(1970—),女,博士,副教授,主要从事光信息传输和超材料等方面的
研究。Email:sxdxyrc@sxu.edu.cn (通信联系人)