基于双层金属开口环谐振器结构的U波段左手材料

基于左手介质的传输线理论，经过估算尺寸后设计出相应的结构并仿真得到散射参量，然后利用Smith的参量提取方法提取有效介电常量、有效磁导率和折射率，对一种双层金属开口环谐振器结构的U波段左手材料的传输特性和电磁参量特性进行分析.数值仿真结果表明，该结构在48.8~59.9 GHz频带内有效介电常量和有效磁导率均为负值，同时在该频率范围内具有负折射特性，从而证实了该结构在U波段的左手特性，对左手介质在更高波段的研究具有一定的参考意义.

Abstract

A Uband lefthanded metamaterial is designed and simulated to obtain the scattering parameters after the dimensions are estimated according to the transimission line theory of the lefthanded metamaterial. Furthermore, the properties of transmission and the negative electromagnetic parameters are analyzed after effective permittivity; effective permeability and refraction index are calculated by the Smith parameter retrieval method. The results show that the proposed lefthanded metamaterial structure behaviours the negative refraction characteristic while the real parts of effective permittivity and effective permeability are both negative in 48.8~59.9 GHz band. Thus, the existence of the lefthanded metamaterial in Uband is demonstrated，and it is of great reference significance to research on metamaterials in higher band.

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易强, 周辅坤, 骆兴芳. 基于双层金属开口环谐振器结构的U波段左手材料[J]. 光子学报, 2013, 42(5): 576. YI Qiang, ZHOU Fukun, LUO Xingfang. A Uband Lefthanded Metamaterial Based on Twolayered SRR Structure[J]. ACTA PHOTONICA SINICA, 2013, 42(5): 576.

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