基于左手材料提高微带天线方向性的研究  

Research on the method to improve the directivity of microstrip antenna with lefthanded materials

作　　者：张甲楷 丁君[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710072

出　　处：《现代电子技术》2013年第23期81-84,共4页Modern Electronics Technique

基　　金："西北工业大学研究生创业种子基金"项目支持:EBG结构在抑制阵列天线栅瓣中的应用(Z2013067)

摘　　要：左手材料是介电常数和磁导率全为负值的新型人工合成电磁材料,在其中传播电磁波的群速度与相速度方向相反。利用左手材料的平板透镜聚焦特性,可以改善天线的辐射性能,提高天线的方向性。在此利用左手材料这一特性设计出基于左手材料的微带天线。研究结果显示,加载左手材料以后的微带天线半功率束宽减小29°。验证了左手材料能够提高天线方向性这一特性。Left-handed material is a kind of new synthetic electromagnetic material in which the permittivity and permeability are all negative, and the group velocity of electromagnetic wave propagation is against the phase velocity. The radiation perfor- mance and the directivity of the antenna can be improved by using the slab lens focusing characteristic of the left-handed material. With this characteristic, a microstrip antenna based on left-handed materials is designed. The research results show that the beamwidth of half power can be reduced by 29~ after uploading the left-handed material. The property that the left-handed materials can improve the directivity of the antenna was proved.

关 键 词：左手材料 微带天线 半功率束宽 方向性 

分 类 号：TN82-34[电子电信—信息与通信工程]