由左手媒质构成的新的频率选择表面  

NEW FREQUENCY SELECTIVE SURFACE 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：《红外与毫米波学报》2007年第2期121-124,共4页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金(60371010;60471037;60531020)资助项目

摘　　要：采用多模网络理论与严格模匹配相结合的方法,详细分析了新的由左手媒质构成的周期结构的频率选择特性.着重研究了结构参数对表面选择特性的影响.对左手和右手周期结构的频率选择特性作了比较,并对一些现象做了解释.分析结果表明:左手周期结构具有比右手周期结构大得多的全反射谱带宽.该研究结果对于精确设计新的毫米波频率选择表面有一定的参考价值.The frequency selective characteristics of a new dielectric periodic structure composed of left handed materials were carefully studied by a method which combines the multimode network theory with the rigorous mode matching method. The emphasis was laid on the investigation of the variations of the frequency selective characteristics with structure parameters. The comparisons for the frequency selective properties between RHM and LHM gratings were also shown with some explanations. It is indicated that the bandwidth of the total reflection spectrum for the LHM gratings is much larger than that for the RHM ones. The calculated results are of significance for accurate design of the new millimeter wave frequency selective surface.

关 键 词：左手媒质 介质周期结构 频率选择表面 多模网络 

分 类 号：TN811.7[电子电信—信息与通信工程] TN822.3