L波段高增益全向天线的设计

Design of L-band high-gain omni-directional antenna

提出一种工作在L波段的高增益全向天线设计方法,该天线垂直极化,采用多级同轴套筒结构,使用N-K型连接器馈电,可以承受10 kW的射频功率。仿真结果显示,该天线方向图在水平方向全向,最大增益超过5 dB,增益不圆度小于0.3 dB;天线在垂直方向上-10 dB波束覆盖超过75°,天线驻波比小于1.7;制作天线实物并测试,测试结果与设计曲线相符合,满足系统任务要求。

A high-gain omni-directional antenna operating at L band is designed. The vertically polarized antenna, fed by the N-K connector, adopts the multi-stage coaxial sleeve structure, and can withstand 10 kW RF power. The simulation results show that the antenna pattern is omnidirectional in the horizontal direction, the maximum gain is more than 5 dB, and the non-roundness is less than 0.3 dB. The antenna has a beam coverage at-10 dB of more than 75°in the vertical direction and the VSWR is less than 1.7. The antenna is made and tested. The test results accord with the design curves and meet the system task requirements.