摘要
将喇叭天线的口面边缘作成曲线形状可抑制其远副瓣和后瓣电平。本文介绍了将一致性几何绕射理论（ＵＴＤ）分析由二维推广到三维，并用它对这种改进型喇叭的Ｅ面方向图进行分析的过程。文中还引用改进型喇叭和规喇叭特性的计算结果与实际测量结果，两相比较，可看到这种分析方法的准确性。
Shaping the aperture edge of a horn antenna into a curvilineal form can suppress itsfar-out and back sidelobe level.This paper discusses how to extend the two dimensionalanalysis of the uniform geometrical theory of diffraction to a three-dimensional one andhow to apply it to the analysis of the E-plane radiation pattern of a modified horn.Measurements and calculations of the characteristics of the modified horn and the regularhorn are also presented in this paper.The results show the great accuracy of thethree-dimensional analysis method.
关键词
喇叭天线
曲线边缘
三维
UTD
分析
旁瓣抑制
horn antenna,far-out sidelobe and back sidelobe,curvilineal edge,uni-form geometrical theory of diffraction(UTD)
