“王”字型左手材料结构的设计与仿真  

Design and Simulation of “Wang” Character LHM Structure

作　　者：孙振 竹有章 何星[1] 杨成莱 李磐石 

机构地区：[1]第二炮兵工程大学,陕西西安710025

出　　处：《材料科学与工程学报》2013年第1期107-111,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(11074200);陕西省自然科学基金资助项目(2011JQ8030)

摘　　要：针对目前由金属开口谐振环与金属杆构成的左手材料结构存在构造比较复杂、工艺实现较难的缺点,设计实现了一种基于金属条的改进结构-"王"字型结构。通过理论分析和电磁仿真软件Ansoft HFSS 10模拟仿真,利用散射参量法提取参数结果表明该结构可以在X波段实现介电常数和磁导率同时为负。讨论研究了该左手结构的金属条宽度、中间缺口宽度、中间条宽度三个结构尺寸参数变化对谐振频率和透射峰幅值的影响,结果表明三个参数的变化都会对二者产生影响,其中金属条宽度改变对透射峰值影响幅度相对较大,缺口宽度改变对谐振频率影响幅度相对较大。To solve the complexity and difficulty in construction and realization of the left-handed structure composing of SRRs and Rod, an improving structure named wang character structure based on the metal strip was designed, and it was simulated in Ansoft HFSS 10 electromagnetism simulation software. By theoretical analysis and simulation, the parameter results obtained by scattering parameters method indicated that this structure had negative permittivity and permeability in the X-band. The impacts of the size varieties of the metallic slab＇s width, the center space＇s width and the center slab＇s width on resonance frequency and transmission apex amplitude were discussed and analyzed. The results show that the resonance frequency and transmission apex amplitude can be influenced by all of the three parameters. Thereinto, the varieties of metallic slab＇s width have more obvious effects on transmission apex amplitude, and varieties of the center space＇s width have more obvious effects on resonance frequency.

关 键 词：金属条 左手材料 负折射率 谐振频率 S参数 

分 类 号：O441.6[理学—电磁学]