一种宽带高增益角锥喇叭天线的设计

Design of a Broadband High-gain Pyramidal Horn Antenna

介绍了一种工作在V波段的角锥喇叭天线的设计方法,天线采用微带线馈电。运用电磁仿真软件对天线进行参数优化仿真分析,通过改变喇叭的口径尺寸、长度及微带-波导转换结构的各个参数,实现天线回波损耗S_(11)≤-19.5 dB,工作带宽达到18.18%(50~60 GHz),带内增益均大于15 dBi,E面和H面3 dB波束宽度分别为40°和20°。同时对天线进行制作和装配,并对天线的工作性能进行测试和分析,测试结果与仿真结果比较吻合。设计的天线具有宽频带、高增益和结构简单等优点,在目标识别成像和短距离高速通信等领域具有广泛的应用前景。

A design method of V-band pyramidal horn antenna fed by microstrip line is introduced.The electromagnetic simulation software is used to optimize the parameters of the antenna.By changing the aperture size and length of the horn and various parameters of the microstrip waveguide conversion structure,the return loss S 11≤-19.5 dB,the bandwidth is 18.18%(50~60 GHz),the gain is greater than 15 dBi in band,and the 3 dB beam width of E plane and H plane is 40°and 20°respectively.At the same time,the antenna is manufactured and assembled,and the working performance is tested and analyzed,the test results are in good agreement with the simulation results.The designed antenna has the advantages of broadband,high gain and simple structure,it has a wide application prospect in the fields of target recognition and imaging and short-distance high speed communication.