一种基于缩比模型的甚低频伞形发射天线电压分布计算方法  

Voltage-Distribution Calculation of VLF Umbrella Transmitting Antenna based on Reduction Ratio Model

作　　者：黄金辉 李斌[2] 柳超[2] 严亚龙[2] HUANG Jin-hui;LI Bin;LIU Chao;YAN Ya-long(Information and Communications Bureau of Navy Staff Department,Beijing 100841,China;Department of Electronic Engineering,Naval University of Engineering,Wuhan Hubei 430033,China)

机构地区：[1]海参信息通信局,北京100841 [2]海军工程大学电子工程学院,湖北武汉430033

出　　处：《通信技术》2018年第7期1527-1531,共5页Communications Technology

基　　金：国家自然科学基金(No.41727804)~~

摘　　要：为了研究甚低频伞形天线的电压分布规律,提出了基于缩比模型的复杂线网结构的电压分布计算方法。首先建立了计算电压分布的三种模型,通过对比分析得出了一种更为优越的计算方法;其次利用电磁仿真软件FEKO,对美国卡特勒甚低频伞形天线的1:400缩比模型进行建模;最后利用提出的计算方法,对该天线上中心塔、顶容线和围线的电压分布规律进行了计算。结果表明:天线顶部电压大于根部电压,天线顶线电压由内向外逐渐增大;在一段围线上(两相邻边塔之间的围线段),中部电压最小,随后向两侧逐渐增大。提出的计算方法对该类型天线绝缘子的选取具有一定的指导意义。In order to explore the voltage distribution law of very-low-frequency umbrella antenna,a voltage distribution calculation method based on the shrinkage model is proposed.Firstly,three models for calculation voltage distribution are established,and comparison analysis indicates a more superior calculation method,then with EM simulation software FEKO,the 1:400 scale model of the American Cutler VLF antenna is modeled,and then with the proposed calculation method,the voltage distribution law of central tower,top line and surrounding line on the antenna calculated.The experiment results indicate that the voltage at the top of the antenna is greater than that at the root,and the voltage of top line gradually increases from the inside to the outside,and the voltage in the middle of a section of the perimeter line(the line between two adjacent side towers)is the smallest,and then gradually increases to the both sides.The proposed calculation method is of certain guiding significance for the antenna insulator selection of this type.

关 键 词：甚低频 端口电压 矩量法 天线幕 辅助导线 

分 类 号：TN827.2[电子电信—信息与通信工程]