介质损耗对左手媒质周期结构频率选择特性的影响  

Effects of Dielectric Loss on Frequency Selective Characteristics of Periodic Structure Composed of Left-Handed Materials

作　　者：方维海[1] 徐善驾[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,安徽合肥230027

出　　处：《电子学报》2007年第12期2399-2402,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60471037;No.60531020)

摘　　要：采用多模网络与严格的模匹配相结合的方法研究了介质损耗对左手媒质构成的周期结构频率选择特性的影响;并对其中的新现象给予了解释.讨论了损耗对左手和右手周期结构的频率选择特性影响的差异.本文得到的结果对于精确设计新的毫米波频率选择表面有一定的指导意义.The frequency selective characteristics of lossy dielectric periodic structure composed of left-handed materials are carefully studied by a method which combines the multimode network theory with the rigorous mode matching method; and some explanations for the new phenomena are made. Comparisons between left-handed and right-handed gratings for the effects of dielectric loss on frequency selective characteristics are given. Guidelines for accurate design of the new millimeter wave frequency selective surface are presented.

关 键 词：左手媒质 介质周期结构 频率选择特性 多模网络 介质损耗 

分 类 号：TN011[电子电信—物理电子学]