宽带高增益圆极化微带-喇叭组合天线  

Broadband high gain circularly polarized microstrip-horn combined antenna

作　　者：叶喜红[1] 何芒[2] 王亚丽[1] 郝芸[1] 王冠 

机构地区：[1]天津理工大学中环信息学院 [2]北京理工大学信息与电子学院 [3]61336部队

出　　处：《太赫兹科学与电子信息学报》2016年第6期-,共4页Journal of Terahertz Science and Electronic Information Technology

摘　　要：研究了一种具有良好工作性能的微带-喇叭组合右旋圆极化天线,首先设计了一种双层宽带圆极化微带天线结构,同时满足电压驻波比(VSWR)≤2,轴比(AR)≤4 d B的频带宽度(Bw)≥24%,主极化增益大于9 d Bi;通过引入角锥喇叭结构,在工作频带内将天线增益提高到12 d Bi以上,同时不影响原天线的其他性能。为更好了解微带-喇叭组合右旋圆极化天线的性能,并快速而准确地设计该天线结构,对天线主要几何参数进行了适当分析和研究。A broadband high-gain Right-Hand-Circularly-Polarized(RHCP) microstrip-horn combined antenna is proposed. Firstly, a broadband circularly-polarized microstrip antenna with double-layer is designed, which has a property that the overlapped bandwidth of Voltage Standing Wave Ratio(VSWR)≤2 and Axial Ratio(AR)≤4 dB is more than 24%, and the RHCP gain is about 9 dBi. Then, the gain is enhanced significantly by adding the pyramidal horn structure, while the other characteristics of the microstrip antenna are slightly changed. The parametric studies are carried out to investigate the effects of primary geometric sizes on the antenna's performance.

关 键 词：宽带天线 高增益天线 微带天线 组合天线 

分 类 号：TN822[电子电信—信息与通信工程]