EBG高阻表面的准静态等效媒质模型  

Improved quasi-static effective medium model of the electromagnetic band gap(EBG)high-impedance surface

作　　者：苏子剑[1] 梁昌洪[1] 李龙[1] 翟会清[1] 

机构地区：[1]西安电子科技大学天线与微波技术重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2015年第5期92-97,共6页Journal of Xidian University

基　　金：国家自然科学基金资助项目(61101066);陕西省自然科学基金资助项目(2014JM8316,2013JZ019);中央高校基本科研业务费专项资金资助项目(K5051202051,K5051302025,JB140232)

摘　　要：针对电磁带隙高阻抗表面的电磁特性问题,提出了一种新型准静态等效媒质模型,建立了电磁带隙高阻抗表面的几何特性、媒质特性和电磁特性之间的定量关系.当工作波长λ远大于电磁带隙高阻表面每个单元的几何尺寸时,高阻表面与波的宏观相互作用相当于等效媒质.通过准静态电磁理论的分析建立的高阻表面等效媒质模型,可对电磁带隙高阻表面和应用的天线系统各自独立地进行设计.最后给出了分析计算值和实验之间的相互比较,证明了该理论模型的有效性.For the complex electromagnetic property of the electromagnetic band gap（EBG）highimpedance surface,an improved quasi-static effective medium model is proposed, which makes a quantitative relationship among the geometry,medium properties and the electromagnetic properties of the EBG high-impedance surface.The macroscopic interaction of the wave with the EBG high-impedance surface is equivalent to that of the wave with an effective medium when the wavelength is large compared with the dimension of each cell of the high-impedance surface.With the effective medium model proposed by quasistatic electromagnetic theory,designs of the high-impedance surface and its application system such as antenna system can be implemented separately.Some numerical simulations and experiments of practical high-impedance surfaces are given to illustrate the applications and validity of the proposed model.

关 键 词：电磁带隙高阻表面 准静态分析 等效媒质模型 

分 类 号：TN802[电子电信—信息与通信工程]