基于特征模分析的宽带全向天线设计  

Design of Broadband Omni-Directional Antenna Based on Characteristic Mode Analysis

作　　者：韩国瑞[1] 田凯 裴立力[1] HAN Guorui;TIAN Kai;PEI Lili(School of Physics and Electronics Engineering, 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

出　　处：《测试技术学报》2020年第2期159-162,168,共5页Journal of Test and Measurement Technology

基　　金：国家自然科学基金资助项目(61172045,61271160);国家基础科学人才培养基金资助项目(J1103210);山西省自然科学基金资助项目(2014021021-1,2015011042,2015011051)。

摘　　要：宽带全向天线在现代军事、无线通信等许多方面有着非常广泛的应用.本文设计了一款基于特征模分析的宽带全向天线,并给出了设计方案与仿真结果.通过特征模分析,对天线结构进行优化设计,改善天线的带宽和辐射特性.通过设置适当的馈源,激励天线的单极子特征模式,得到工作宽带宽并全向性良好的天线.数值仿真结果表明,该天线工作频段在5.35~6.05 GHz,反射系数为-16.38 dB,天线峰值增益为4.12 dBi,阻抗特性良好.Broadband omni-directional antenna has a wide range of applications in modern military,wireless communication and many other aspects.This paper mainly introduces a broadband omni-directional antenna based on characteristic mode analysis,and presents the design scheme and simulation results.Through the characteristic mode analysis,the antenna structure was optimized,and the band wide and the omni-directional radiation characteristics were improved.By setting the appropriate feed source and e monopole characteristic pattern of excitation antenna,the antenna is obtained with good working broadband and omni-directional property.The simulation results show that the antenna works at 5.35~6.05 GHz,the reflection coefficient is-16.38 dB,the peak gain is 4.12 dBi and the impedance characteristic is good.

关 键 词：特性模分析 低剖面 宽带全向天线 

分 类 号：TN821+.3[电子电信—信息与通信工程]