基于零折射率超材料的高定向性微带天线  

A high-directivity microstrip antenna based on zero-index metamaterial

作　　者：郭晓静[1] 赵晓鹏[1] 刘亚红[1] 朱卫仁[1] 

机构地区：[1]西北工业大学应用物理系智能材料实验室,陕西西安710129

出　　处：《电子技术应用》2011年第6期110-112,共3页Application of Electronic Technique

基　　金：国家自然科学基金(50632030;50872113;50936002)

摘　　要：研究了一种基于平面网格状零折射率超材料的高定向性微带天线。利用超材料结构的平均效应实现了在10.24 GHz处介电常数为零,进而实现了超材料的折射率为零。实验结果表明,利用零折射率超材料对波束产生汇聚作用,使微带天线的定向性明显增强,E面、H面半功率波束宽度分别收缩了56.67°和26.60°,侧向辐射明显减弱,天线的增益提高了3.80 dB。We design, fabricate, and experimental demonstrate a high-directivity microstrip antenna based on planar net-shaped zero-index metamaterial. An averaging effect over the metamaterial structure yields an zero permittivity at 10.24 GHz, which results in a metamaterial with zero index of refraction. The experimental results indicated that, the directivity of the zero-index microstrip antenna improved greatly, the half-power beamwidths reduction of E plane and H plane are 56.67° and 26,60°, respectively. Moreover, the side radiation reduced while the forward radiation increased, and the gain of the antenna is enhanced by 3.80 dB.

关 键 词：高定向性 微带天线 零折射率 

分 类 号：TN822.4[电子电信—信息与通信工程]