摘要
为展宽微带天线的轴比带宽并提高增益,利用旋转馈电方法设计出一种小型化宽轴比高增益的圆极化微带阵列天线。天线由四个微带贴片单元和一个旋转馈电网络组成,每个贴片单元为引入半圆槽的切角矩形,且关于中心旋转对称;旋转馈电网络位于底层介质基板的表面,与四个贴片单元通过四个镀铜通孔相连。利用电磁仿真软件HFSS对天线的性能进行数值计算,阵列天线的-10dB阻抗带宽为12.3%(4.71~5.33GHz),3dB轴比带宽为13.2%(4.67~5.33GHz),峰值增益在5.2 GHz为9.02 dB。
In order to improve 3 dB axial ratio(AR)bandwidth and enhance the gain of the microstrip antenna,a small-sized circularly polarized microstrip array antenna with wide axial ratio and high gain was designed by the rotary feed method.The antenna consists of four microstrip patch units and a rotated feed network.Each patch unit is a chamfered rectangle with a semicircular groove and is rotationally symmetric about the center.The rotated feed network is placed on the surface of the underlying dielectric substrate and connected with the four patch units by four copper plated vias.The performance of the antenna was numerically calculated with the electromagnetic simulation software HFSS.The-10dB impedance bandwidth of the array antenna is 12.3%(4.71-5.33GHz),the 3 dB axial ratio bandwidth is 13.2%(4.67-5.33GHz),and the peak gain is 9.02 dB in 5.2 GHz.
作者
王开开
陈明
李聪
苗倩
董成杰
WANG Kaikai;CHEN Ming;LI Cong;MIAO Qian;DONG Chengjie(School of Electronic Engineering,Xi??an University of Posts and Telecommunications,Xi??an 710121,China)
出处
《电子元件与材料》
CAS
CSCD
北大核心
2019年第7期80-84,共5页
Electronic Components And Materials
基金
西安邮电大学研究生创新基金资助项目(CXJJLY2018025,CXJJLY2018026)
关键词
旋转馈电
圆极化
阵列天线
轴比带宽
切角矩形
rotary feed
circular polarization
array antenna
axial ratio bandwidth
cut corner rectangle
