方形杜近旁倾斜粗振子电视发射天线的研究  

Investigation on TV Transmitting Antenna of slant Coarse Elements in Close Vicinity to Square Columns

作　　者：余万吉 王定华 

出　　处：《广播与电视技术》1989年第6期16-22,共7页Radio & TV Broadcast Engineering

摘　　要：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。The current distribution, input impedance, distant radiation field and other parameters of slant course elements and their array in close vicinity to square column of finite width are analyzed respectively with vector method and combination of vector method and diffraction theory. The influence of the position and the size of the column on these parameters is discussed. The frequency characteristics of the antenna is analyzed. Also, the antenna is tested. The analysis and results herein provide a theoretical basis to the engineering design of four dipole VHF TV transmitting antennea commonly used now in our courtry.

关 键 词：电视 发射天线 倾斜粗振子 

分 类 号：TN948.52[电子电信—信号与信息处理]