单方环结构左手材料微带天线  

A mircostrip antenna with single square ring structured left-handed metamaterial

作　　者：郭林燕[1] 杨河林[1] 李敏华[1] 高超嵩[1] 田原[1] 

机构地区：[1]华中师范大学物理科学与技术学院,武汉430079

出　　处：《物理学报》2012年第1期135-139,共5页Acta Physica Sinica

基　　金：中央高校基本科研业务费(批准号:CCNU10A02021)资助的课题~~

摘　　要：设计了一种简单的双面单方环结构左手材料,在4.8-5.25 GHz频率范围内该材料的等效介电常数和等效磁导率同时为负.将此单方环左手材料作为覆盖层,置于中心工作频率为5.0GHz的微带天线之上.仿真和实验研究表明:相对普通微带天线而言,覆层微带天线的性能得到了明显改善,E面和H面的半功率波束宽度分别收缩了25°和20°,定向性得到了提高,5 GHz处的增益提高了3 dB,-10 dB带宽增加了600 MHz.A simple structured left-handed metamaterials composed of single square ring cell is fabricated.Its permittivity and permeability are simultaneously negative in 4.8-5.25 GHz.A 5.0 GHz microstrip antenna is proposed,and we use this single square ring structured left-handed metamaterials（SSR-LHMs） as covering layer.Simulation and experiment results show that compared with conventional microstrip antenna,the performance of the new microstrip antenna with SSR-LHMs has been improved remarkably.The -3 dB beam of E-plane and H-plane can be reduced respectively by 25°and 20°,so the directional property of the antenna is enhanced.The gain is improved by 3dB and the -10 dB bandwidth is increased by 600 MHz.

关 键 词：单方环结构 左手材料 微带天线 

分 类 号：TN822[电子电信—信息与通信工程]