一种宽带平面水平极化全向天线  

A Planar Wide-Band Horizontally Polarized Omnidirectional Antenna

作　　者：侯爱霞[1] HOU Aixia(School of Artificial Intelligence,Chongqing University of Posts and Telecommunications,Chongqing 402160,China)

机构地区：[1]重庆科创职业学院人工智能学院,重庆402160

出　　处：《电子器件》2021年第3期602-605,共4页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(51275541)。

摘　　要：提出一款宽带平面印刷全向天线。Vivaldi天线具有超宽频、端射、低旁瓣等特点。基于四个环形旋转的Vivaldi天线实现宽带宽波束全向水平极化天线。该天线表面具有均匀同相电流,因此可以等效电小环天线。对Vivaldi天线的辐射原理、输入阻抗等问题进行了讨论和仿真分析。一分四功分器输出端口与Vivaldi天线输入宽口之间采用微带阶梯阻抗变换器实现宽带匹配。天线采用PCB印刷工艺实现,测试结果:平面全向天线工作带宽3.6 GHz~6.6 GHz(S11<-10 dB),不圆度小于3 dB。The planar broadband horizontally polarized printed omnidirectional antenna is proposed.Vivaldi antenna has ultra-wide band,end fire,low side-lobe characteristics.Based on the four ring around the planar placed Vivaldi antennas,a broadband and wide beamwidth omnidirectional horizontally polarized antenna is realized.Because the surface of the antenna has the same phase current,the proposed antenna is equivalent to electrical small loop antenna.Radiation theory and input impedance of Vivaldi antenna are discussed and their simulation is analyzed.The micro-strip stepped impedance transformer placed between one-four power divider output ports and Vivaldi antenna input ports is used for realizing broadband matching.Proposed antenna is fabricated by using PCB printing process.The results of measurement are that operation bandwidth of planar omnidirectional antenna is 3.6 GHz~6.6 GHz(S11<-10 dB),and out-of-roundness is less than 3 dB.

关 键 词：平面全向天线 宽带 VIVALDI天线 水平极化 阶梯阻抗变换 PCB 

分 类 号：TN821.1[电子电信—信息与通信工程] TN822.8