基于积分方程式的较粗圆筒天线的数值分析法

Numerical analysis of moderately thick cylindrical antennas based on integral equation

提出了基于表面电流有限间隙馈电Halln型积分方程式分析较粗圆筒天线的数值方法。对于在脉冲展开点配矩量法的互阻抗表达式中遇到的特异点积分,介绍了一种数值结合解析法的处理方法,解决了特异点积分问题。该方法的主要优点是,在计算的简单性及节省计算时间方面要远远优于Galerkin法。实例天线输入阻抗的计算结果与其它方法的计算收敛值及测试值进行了比较。

A numerical method based on the Hallén type surface current integral equation with finite gap excitation was presented for the analysis of moderately thick cylindrical antennas. The singular integral in the mutual impedance expression, which occurred in MoM with pulse expansion and point matching, was estimated by combining numerical and analytical procedures. The major advantage of this technique is that it is superior to the Galerkin method in the computation simplicity and in the reduction of computation time as well. Illustrative numerical results of the input impedance of some antennas were compared with those of other methods and measured data.