%0 Journal Article
%T Negative Refraction of a Symmetrical π-shaped Metamaterial
%A 闫长春
%A 崔一平
%A 王琼
%A 卓士创
%J 中国物理快报
%D 2008
%I 
%X A symmetrical π-shaped metamaterial is investigated. Numerical simulations exhibit the negative-refractive property of this structure. The complex refractive index n, wave impedance z, effective permittivity ε and effective permeability μ have been retrieved from the simulated S parameters. The negative-refractive band lies between 11.2 GHz and 13.05 GHz. The frequency band with high transmission with low loss occurs between 11.95 GHz and 12.5 GHz, which is helpful for practical applications. The mechanism of the electromagnetic resonance is also revealed.
%K 左手超材料
%K 负折射率
%K 对称性
%K 数值模拟
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=47DEBEA9A69941D230CDD55DE6E6C594&yid=67289AFF6305E306&vid=C5154311167311FE&iid=0B39A22176CE99FB&sid=BE5DBC360CD4FFB9&eid=D8B37A0210DB6B9D&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0