ANSERLIN天线辐射方向图的研究

ANSERLIN天线辐射方向图的研究 RADIATION PATTERNS OF ANSERLIN ANTENNA 李永俊 Li Yongjiun 1 2 3 first-author 顾朝晖 Gu Zhaohui 1 2 3 张凤珍 Zhang Fengzhen 1 2 3 甘师尧 Gan Shiyao 1 2 3 武汉大学电子信息学学院 武汉大学电子信息学学院 College of Electronic Information,Wuhan University College of Electronic Information,Wuhan University 贵州航天工业部061基地,武汉 贵州航天工业部061基地,武汉 ,430072 ,430072 指出了圆形基底上的环形行波磁流的辐射场与圆环扇形——辐射线（ANSERLIN）天线的辐射场强的等效性,用一致性几何饶射理论（UTD）求得了基底边缘的边缘绕射场;阐明了计入二次绕射的必要性;用等效边缘电流法（EEC）算得焦散区的绕射场,将理论结果与实验结果做了比较,二者基本符合。 In this paper, the theoretical analysis of the annular sector-radiating line （ANSERLIN ） antrnna’ s radiation patterns is presented. Our method is based on imitating the radiation from the ANSERLIN antenna with that from a small magnetic Current loop mounted on a conducting disc whose size is limited. The UTD is employed to calculate the field of edge diffraction,especially, It is pointed that the effect of the second time diffraction must be considered. In the caustic region, the method of equivalent edge current （EEC） is employed to calculated the field of edge diffraction. Numerical results are showwn to agree well with experiments. ANSERLIN大线 磁流环 致性几何绕射理论 等效边缘电流法 二次绕射 ANSERLIN antenna magnetic current loop UTD EEC second time diffraction TN823 1996-01-01 2021-04-01 1