【作者】 胡凌云； 冯恩信； 张亦希；

【Author】 Hu lingyun;Feng enxin;The School of Electronic and Information Engineering,Xi’an JiaoTong University;

【机构】 西安交通大学电子与信息工程学院；

【摘要】 阵元间的互耦效应会影响天线阵列的电参数和方向性,从而影响到系统的测向性能。为了分析互耦对导引头系统比相法测向造成的影响,针对系统测向天线的模型,首先通过有限元法仿真分析得到测向阵列天线的阻抗矩阵,并通过线性阻抗网络计算出测向单元天线上的分布电流,从而得到天线的接收特性,其次由天线的接收特性分析出测向天线的相位差变化,最后由天线相位差的变化分析出互耦对系统比相法测向造成的影响。本文在最后给出了数值仿真结果,分析了互耦对比相法测向性能存在影响。更多还原

【Abstract】 The effect of mutual coupling among antenna sensors can change antenna array’ electric parameters and direction,and it will affect the direction-finding of a system.In order to analyze if the mutual coupling of an antenna array would affect the performance of phase comparison direction-finding,the method of finite element is used to analyze the impedance matrix of the antenna array in DF system,and using the mutual impedance network to obtain the distribution of current in each unit antenna,then to get the characteristics of the antenna reception with the effect of mutual coupling,and though the reception characteristics of the antennas to analyze the changes in phase difference,and lastly using the variation in phase difference to analyze the influence on the phase comparison DF system.Finally,the simulation results are given,and it verifies that the mutual coupling among antennas can make some effect on a DF system with phase comparison.更多还原