%0 Journal Article
%T Investigation of a lossless metamaterial covered conductor cylinder illuminated by electric-line-source<br>线电流源激励下无耗异向介质层覆盖导体圆柱电磁特性的研究
%A Wang Hai-Long
%A Wu Qun
%A Meng Fan-Yi
%A Li Le-Wei
%A <br>王海龙
%A 吴群
%A 孟繁义
%A 李乐伟
%J 物理学报
%D 2007
%I 
%X The electromagnetic characteristics of the model for an electric line source radiating parallel to a lossless metamaterial covered infinitely long conductor circular cylinder is investigated. First, the electromagnetic model is presented and exact solution is derived. Second, the exact solution is employed in numerical calculations. The figures of the near field under different geometric and electromagnetic parameters are obtained; the characteristics of the far field properties are also studied through the directivity and normalized radiation resistance. Because of the negative refraction of the metamaterial, the distinct "focus", which could not be seen in the conventional material, could be obtained in the material layer from the near field pattern. The presented electromagnetic model is compared with the former approach and its validity is proven.
%K electric line source
%K metamaterial
%K directivity
%K radiation resistance<br>线电流源
%K 异向介质
%K 方向性系数
%K 辐射阻抗
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=98E14E1EE22F89B3&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=94C357A881DFC066&sid=A4CA59572D689648&eid=12303F3260BBCB69&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=18