加载异向介质的太赫兹频段高方向性喇叭天线  

HIGH DIRECTIVE HORN ANTENNA OF METAMATERIALS IN TERAHERTZ

作　　者：全祥锦 张世全 李卉 

机构地区：[1]武警工程大学研究生管理大队14队,西安710086

出　　处：《低温物理学报》2015年第4期301-305,共5页Low Temperature Physical Letters

基　　金：国家自然科学基金(批准号:61072034;Q1302316;61265006);高校自然科学基金(批准号:WJY201404)资助的课题

摘　　要：设计了一款工作在太赫兹波段的类三角形异向介质单元,对传输系数进行处理得到单元的等效介电系数和有效磁导率,数据结果表明该单元在太赫兹波段出现双负频段.通过将该类三角形异向介质应用于太赫兹波段的喇叭天线,利用零折射率特性制作天线填充介质实现电磁波的定向辐射,减小天线的后向波能量损耗,达到提高天线方向性系数和增益的目的.实验结果表明:加载类三角形异向介质单元后的喇叭天线的后向波辐射减弱、前向辐射效率增强,方向性系数提高了46.86,增益提高了2.77dB.Presenting a triangular metamaterials structure unit and retrieve the effective permittivity and permeability parameters from the transmission and reflection data. Simulation results show that the combined unit exhibits left-hand passband in Terahertz. Apply triangular electromagnetic metamaterials to conventional THz and use the characteristics of zero refractive index to produce horn antennas superstrate for directional radiation of electromagnetic, so as to improve the antenna directivity and gain. The experimental results show that.. Antenna with triangular magnetic metamaterials results in backward wave radiation weaken, forward radiation efficiency enhancement and directivity factor increased by 46. 86 and gain increased by 2. 77dB.

关 键 词：异向介质 太赫兹波段 类三角形异向 介质单元 高方向性天线 

分 类 号：TN823[电子电信—信息与通信工程]