一种低不圆度的垂直极化全向超宽带天线  

Ultra⁃wideband vertical polarized omnidirectional antenna with low gain variation

作　　者：张涌萍[1] 叶亮华 ZHANG Yongping;YE Lianghua(Guangdong Food and Drug Vocational College,Guangzhou 510000,China;School of Physics&Optoelectronic Engineering,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东食品药品职业学院,广东广州510000 [2]广东工业大学物理与光电工程学院,广东广州510006

出　　处：《现代电子技术》2023年第19期24-28,共5页Modern Electronics Technique

基　　金：国家自然科学基金面上项目(62071130);广东食品职业学院自然科学研究项目(2021ZR17)。

摘　　要：文中提出一种可用于3G/LTE/5G室内通信的一种低不圆度的垂直极化全向超宽带天线,该天线由铜制单极子、加载金属片和金属地板构成。通过对铜制单极子馈电,天线实现垂直极化全向辐射。为了改善天线的阻抗匹配,减小天线的不圆度,单极子辐射体顶部增加了加载金属片。为了进一步扩展天线的阻抗带宽,金属地板上设置了一道环形槽。通过测试可得,在1.7~5 GHz范围内,该天线的相对阻抗带宽为104%()||S11<-14dB,不圆度小于1.5 dBi,可实现良好的室内移动通信。An ultra⁃wideband vertical polarized omnidirectional antenna with low gain variation is proposed for 3G/LTE/5G wireless indoor communication in this paper.The antenna consists of a discone made of copper,a top⁃loading disk and a ground plate.By feeding the discone made of copper,the antenna realizes vertical polarized omnidirectional radiation.To improve its impedance matching and decrease its gain variation,the top⁃loading disk is employed.To further broaden the impedance bandwidth,the loop slot is employed in the ground plate.Test results show that the relative impedance bandwidth of the antenna is 104%(|S11|<-14 dB)when the frequency range is within 1.7~5 GHz,and its gain variation is lower than 1.5 dB in operating band,so it can realize fine indoor communication.

关 键 词：单极子天线 超宽带 全向天线 不圆度 垂直极化 加载金属片 阻抗带宽 

分 类 号：TN820.11-34[电子电信—信息与通信工程]