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.
作者
侯爱霞
HOU Aixia(School of Artificial Intelligence,Chongqing University of Posts and Telecommunications,Chongqing 402160,China)
出处
《电子器件》
CAS
北大核心
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)。
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
planar omnidirectional antenna
wide band
Vivaldi antenna
horizontal polarization
stepped impedance transformer
PCB
