一种中心馈电圆极化天线设计  

Design of a Circularly Polarized Antenna Using Central Feed

作　　者：薛玲珑 方文婷 许娟 季超 渠芬芬 XUE Linglong;FANG Wenting;XU Juan;JI Chao;QU Fenfen(Shanghai Aerospace Electronics and Communication Equipment Research Institute,Shanghai 201109,China)

机构地区：[1]上海航天电子通讯设备研究所,上海201109

出　　处：《无线电工程》2021年第4期308-312,共5页Radio Engineering

基　　金：国家国防科技工业局资助项目。

摘　　要：针对两维大角度扫描圆极化天线阵面的使用需求,设计了一种中心馈电的圆极化微带贴片天线单元,采用2×2的单元顺序旋转90°的方式解决了微带贴片天线轴比参数敏感的问题,单层微带贴片天线的选用,大大降低了有源相控阵天线的制作成本。采用HFSS对天线单元以及2×2旋转阵列进行电性能仿真,并根据工程使用要求进行样件加工,实测结果显示,天线单元VSWR≤1.5,阻抗带宽为8.9%(24.7~27 GHz),轴比曲线对称。A circularly polarized microstrip antenna using central feed is presented to meet the requirement of phased array antenna with wide-range scanning.The antenna consists of 2×2 microstrip patch units by rotated feed to solve the problem of axial-ratio parameter sensitivity of the microstrip patch antenna.The selection of single-layer microstrip patch antenna greatly reduces the production cost of the phased array antenna.The performance of the antenna is numerically calculated with the electromagnetic simulation software HFSS.The measured results demonstrate that the antenna VSWR≤1.5,the impedance bandwidth covers 24.7~27 GHz(8.9%),and the axial ratio curve is symmetrical.

关 键 词：圆极化 微带贴片天线 中心馈电 低成本 

分 类 号：TN015[电子电信—物理电子学]