喇叭口径尺寸对天线辐射特性的影响  

Influence of Horn Antenna about Aperture Size

作　　者：季聪 程云章[1] 兰川胜 

机构地区：[1]上海理工大学医疗器械与食品学院,上海200093

出　　处：《实验室研究与探索》2018年第1期38-41,共4页Research and Exploration In Laboratory

摘　　要：为了探讨喇叭天线口径尺寸参数对矩形喇叭天线半功率波束宽度及增益产生的影响,导出了口径尺寸与半功率主瓣宽度及增益的影响关系式,并使用三维电磁仿真软件HFSS进行建模仿真,得到喇叭口径尺寸对应的半功率波束宽度和增益值,分析并验证了关系式的正确性。结果表明,口径尺寸的微调会影响半功率波束宽度值,通过水平或垂直面波束宽度的缩减可以增强某个方向的辐射强度以提高天线增益。证实了工程实践中用半功率波束宽度快速计算口径天线增益方法的正确性和可行性,为实际天线工程测量及天线设计提供了理论和参考价值。In order to investigate the influence of aperture size on the half-power beam width and gain of the rectangular horn antenna,based on the known radiation field of the aperture antenna,the relationship between the aperture size and the half-power main beam width and gain is derived,and by using the 3-dimensional electromagnetic simulation software HFSS,the half-power beam width and gain value that corresponding to the aperture size are obtained. The correctness of the relationship is analyzed and verified. The results show that the fine size of the aperture affects the half-power beam width,and the radiation intensity of a certain direction can be enhanced by the reduction of the beam width of the horizontal or vertical plane to improve the antenna gain. It is proved that the correctness and feasibility of the aperture antenna gain method can be quickly calculated by using the half-power beam width in engineering practice. And it also provides a reference and some academic for the actual antenna engineering measurement and antenna design.

关 键 词：口径尺寸 喇叭天线 主瓣宽度 增益 HFSS仿真 

分 类 号：TN820[电子电信—信息与通信工程]