半无穷空间中电学边值问题的数值研究

A Study of Electric Boundary Quantity in Semi-infinite Space

采用边界元方法对半无穷空间中几种高频传输线问题进行了研究，通过对称性问题中与静电镜像法结果的对比说明研究方法的正确性，并把此方法用于非对称双输线的研究中。有结果表明：每条传输线周围的等位线比起同心或偏心圆来已有变形，且随着电位值的增大等位线的变形更厉害，而形变较大的部位朝着另一条导线的方向。这显然是由于两导线间的相互作用不可忽略而至。

A study is made on the performance of high frequency transmission line in the semi-infinite space by applying boundary element method. This method has been verified through the comparison with the results of the method of images in symmetric space. The results using this method in the study of dissymmetric double transmission line show that each transmission line surrounding equipotential curve is out of shape equicentre circle of disequicentre circle. The distortion of equipotential curve has worsened with the increasing of electric potential and the worst distorted part is oriented to the other line.