基于超材料的高水平面增益全向型天线  

A Omnidirectional Antenna with Enhanced Horizontal Gain Based on Metamaterial

作　　者：樊思梦 段美玲[2] 陈新伟[1] FAN Simeng;DUAN Meiling;CHEN Xinwei(School of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,China;School of Foreign Languages,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学物理电子工程学院,山西太原030006 [2]山西大学外国语学院,山西太原030006

出　　处：《测试技术学报》2023年第1期66-72,共7页Journal of Test and Measurement Technology

基　　金：国家自然科学基金资助项目(62071282);山西省自然科学基金资助项目(201901D111026,201901D111027);山西省留学基金资助项目(2021-006)。

摘　　要：为了提高通信覆盖范围,设计了一个具有高水平面增益的全向天线。提出了一种由4个U型条带和2个十字形条带组合而成的负介电常数(ENG)超材料结构,通过将超材料结构组成阵列并放置于全向天线的上方,改变了天线的辐射方向图,使得天线在水平面方向的增益得到增强。测试结果表明,天线可以工作在5.84 GHz~6.14 GHz频段内,天线在5.9 GHz处的半功率波束宽度(HPBW)由80°减小到了33°,在整个通带内天线的水平面最大增益达到了3.61 dBi,较改善前提高了2.15 dB。In order to improve communication coverage,an omnidirectional antenna with a high horizontal gain is designed.An epsilon-negative(ENG)metamaterial structure composed of four U-shaped strips and two cross strips is proposed.By putting the array of metamaterial structures over the omnidirectional antenna,the radiation pattern of the antenna is changed and the gain of the antenna in the horizontal plane is enhanced.The measured results show that the antenna can work in the 5.84 GHz-6.14 GHz band.The half-power beam width(HPBW)of the antenna at 5.9 GHz decreases from 80°to 33°.The maximum gain of the horizontal plane in the whole passband reaches 3.61 dBi,which is 2.15 dB higher than before.

关 键 词：全向天线 负介电常数超材料 高增益 半功率波束宽度 

分 类 号：TN822[电子电信—信息与通信工程]