Calculation of external aperture admittance and radiation pattern of a narrow slot cut across an edge of a sectoral cylinder in terms of a spectrum of two-dimensional solutions
Calculation of external aperture admittance and radiation pattern of a narrow slot cut across an edge of a sectoral cylinder in terms of a spectrum of two-dimensional solutions
复制标题
根据二维解的频谱计算穿过扇形圆柱体边缘的窄槽的外孔径导纳和辐射方向图
DOI：
10.1109/8.318645
复制
发表时间：
1994
影响因子：
5.7
通讯作者：
N. Goto
中科院分区：
文献类型：
--
作者：
J. Hirokawa;J. Wettergren;P. Kildal;M. Ando;N. Goto
开槽三角形圆柱体是移动通信中基站天线的备选方案。本文分析了扇形圆柱体的一个楔形横切窄槽的外孔径导纳和辐射方向图，该狭槽的横切截面近似于实际三角形。因此，外部区域可以用两个正则形状来描述，并解析地得到了两个正则形状的并矢格林函数。槽的孔径导纳用槽孔上的磁电流和正则区无限扩展界面的积分来表示。这些积分分别在空间域和谱域进行计算。这种混合分析提供了很好的收敛性。给出了圆柱尺寸和扇形角对3db波束宽度和狭缝横向辐射方向图前后比的影响。>
A slotted triangular cylinder is a candidate for a base station antenna in mobile communications. This paper presents an analysis of the external aperture admittance and the radiation pattern of a transverse narrow slot cut across one of the wedges of a sectoral cylinder, the cross section of which approximates the actual triangular shape. Thereby, the external region can be described in terms of two canonical shapes, for which the dyadic Green's functions are obtained analytically. The aperture admittance of the slot is expressed in terms of the integrals of magnetic current over the slot aperture and the infinitely extended interface of the canonical regions. These integrals are evaluated in the spacial and spectral domains, respectively. This hybrid analysis provides good convergence of the results. The dependence of the 3-dB beamwidth and the front to back ratio of the transverse radiation pattern from the slot upon the size and the sector angle of the cylinder are also presented. >