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本文分别用矩量法及矩量法与绕射理论的混合技术分析了自由空间和有限宽方形柱近旁的倾斜粗振子及其阵列的电流分布、输入阻抗及远区辐射场等参量;讨论了柱体的位置、大小对这些参量的影响;并对天线的频带特性进行了分析;最后进行了测试。本文的分析方法与结果为目前国内常用的四偶极子分米波电视发射天线的工程设计提供了理论依据。
In this paper, the current distribution, input impedance and far-field radiation field parameters of inclined coarse oscillators and their arrays near free space and finite width square columns are analyzed by using the method of moment method and hybrid method of moment method and diffraction theory respectively. The location of the cylinder, the size of the impact on these parameters; and antenna characteristics of the band were analyzed; and finally tested. The analysis methods and results of this paper provide a theoretical basis for the engineering design of the commonly used four-dipole dipole TV transmitting antenna.