单负材料组合结构对斜入射电磁波的过滤作用  

FILTERING OF INCLINED INCIDENT MICROWAVE WITH COMPOSITE SINGLE-NEGATIVE MATERIALS

作　　者：牟蓉[1,2] 赵嘉功 陈洁 张涛[1] 

机构地区：[1]射线束技术与材料改性教育部重点实验室,北京师范大学核科学与技术学院,北京辐射中心,北京100875 [2]北京师范大学物理学系,北京100875 [3]中核核仪器厂,北京100176

出　　处：《北京师范大学学报（自然科学版）》2013年第1期25-28,共4页Journal of Beijing Normal University(Natural Science)

基　　金：北京市科技新星计划资助项目(952870400);北京师范大学射线束技术与材料改性教育部重点实验室资助项目

摘　　要：研究了入射方向改变时电磁波在负磁导率的开口谐振环结构、负介电常数的铜线阵列结构以及二者的组合结构中的透射,结果表明:随入射角度的变化电磁波的透射明显改变.组合结构对斜入射电磁波有衰减作用,只有在电磁波沿阵面法线方向入射时,才会有高的透射.组合结构可以用于微波的透射成像等技术.Transmission as a function of incident microwave angle through an SRR （split ring resonator） array, a metal wire array, and combination assembly was calculated. It was shown that transmission varied greatly with incident angle. Combination assembly filtered inclined-incident microwave effectively, transmission through combination assembly was high only when incident direction was normal to assembly surface. Combination assembly may be used as a filter for incident direction, and this has potential application in microwave transmission imaging.

关 键 词：单负材料 电磁波 过滤 准直感光 

分 类 号：O441.4[理学—电磁学]