摘要
提出了一种三馈电圆极化微带天线。天线馈电网络采用一分三功分馈电,实现微带贴片天线的圆极化辐射,增加方向图的旋转对称性。用该天线作为阵列单元,采用顺序旋转布阵技术组成一个3×4阵列,有效地改善了阵列天线的增益扫描特性。研究了该阵列天线波束扫描时的辐射特性和极化特性。仿真结果表明:阵列天线在中心工作频率处能实现俯仰60°的扫描,在扫描范围内增益大于11.9 d Bi,轴比小于2 d B。
A novel three feeds circularly polarized microstrip antenna was proposed in this paper.The antenna feeding network was realized using a one-three power divider to enhance the rotational symmetry of circularly polarized radiation of the microstrip patch antenna.The proposed antenna element was arranged into a3×4array using sequentially rotated technique to effectively improve the array gain scanning performance.The array radiation and polarization performance during beam scanning was investigated as well.The simulation results indicate that the array beam can be steered in the elevation up to60°at the center of the operating frequency.The gain of no less than11.9dBi and the axis ratio(AR)of no more than2dB are obtained within the scanning angles.
作者
尹继亮
YIN Jiliang(Southwest Institute of Electronic Technology, Chengdu 610036, China)
出处
《电子元件与材料》
CAS
CSCD
2017年第5期81-84,共4页
Electronic Components And Materials
关键词
微带天线
圆极化
轴比
三馈电
宽角扫描
阵列天线
microstrip antenna
circular polarization
axial ratio
three-fed
wide-angle scanning
array antenna
