一种三波段通用的高增益双脊喇叭天线

A Three-band High-gain Universal Double-ridged Horn Antenna

介绍了一种可用于C、X、Ku波段的雷达接收系统的双脊喇叭天线,该天线体积小、频带宽且增益高。根据天线的结构分析了脊波导、喇叭段尺寸及喇叭脊结构曲线的相关性质,给出了天线相关参数的计算方法。仿真结果表明,在5~18GHz的带宽内输入回波损耗小于-9d B,在6GHz、10GHz、15GHz这三个频点上,天线增益均大于15d B,且没有明显的主瓣分裂。

This paper introduces the double-ridged horn antenna which can be used in C , X , Ku-band radar receiving sys-tem ,the antenna has small volume, wide frequency bandwidth and high gain. According to the structure of the antenna analysis of the relevant properties of ridge waveguide, horn and horn ridge structure segment size curve, the calculation method of the anten-na-related parameters is given. Simulation results show that the input return loss is less than -9dB within 5-18GHz bandwidth, and at 6GHz, 10GHz, 15GHz frequencies, the antenna gain is greater than 15d B , and there is no clear division of the main lobe.