【作者】 李思源； 李紫婷； 朱俊丽； 林慧君； 刘景萍；

【Author】 Siyuan LI;Ziting LI;Junli ZHU;Huijun LIN;Jingping LIU;School of Electronic and Optical Engineering, University of Science and Technology;

【机构】 南京理工大学电子工程与光电技术学院；

【摘要】 本文采用最佳增益天线法,结合MATLAB编程运算,分析并设计天线。应用HFSS建模,并对比分析此方法与其他喇叭设计方法的差异及影响。本文提出的天线设计方法简便,设计结果具有宽频带、高增益、低旁瓣、尺寸较小等优点。本文设计了一款工作在Ka波段的小型主模角锥喇叭天线,喇叭天线口径尺寸为36mm×30mm,喇叭段高度为42mm。实际测试得天线在工作频带内,最大增益为22.56dB,回波损耗低于-18.55dB,和设计结果吻合。采用本设计方法,使得天线体积缩小了54.80%,电压驻波比改善了22.92%。更多还原

【Abstract】 In this paper, the best gain antenna method and MATLAB programming are use d to analyze the influence of antenna size on gain, and HFSS modeling is used. By comp aring and analyzing the difference and influence between this method and other horn desig n methods, a small main mode pyramid horn antenna working in Ka band is designed. Th e aperture size of the horn antenna is 36 mm × 30 mm, and the height of the horn secti on is 42 mm. The maximum gain of the measured antenna is 22.56 dB and the return lo ss is lower than-18.55 dB, which is in good agreement with the simulated results. This d esign only increased the beam width by about 2 °, and sacrificed the gain of about 1.62 dB and the return loss of 1.25 dB, thus reduced the antenna volume by 54.80 % and imp roving the voltage standing wave ratio by 22.92 %. The antenna design method proposed in this paper is simple, and the designed antenna has the advantages of wide band, high gain, low side-lobe and small size.更多还原