特种偏心传输线的LBEM角点弧形法分析

Linear boundary element of angle arc method analysis on special transmission lines with offset inner conductor

由内导体和空心外导体所组成的传输线是电磁工程中一类重要的传输线。提出应用LBEM角点弧形法处理传输线物理角节点问题，解决由于角节点边界条件不连续带来的方程求解困难问题。计算了一类特殊截面偏心传输线的特性阻抗，算例分析结果表明，该方法操作简单，计算便捷，能有效消除角点给边界计算带来的误差，可方便应用于工程问题的设计与计算，并为此类特种传输线加工制作精度提供理论参数。

The transmission lines, consisting of an inner conductor and a hollow outside conductor, is of great importance to microwave engineering and design. In this paper, the angle arc method is proposed to analyse the transmission line angle of physics. Linear segment approach is used to deal with boundary integral equation. In this method, nodes on the angle location take on discontinuity boundary condition is solved , which result in solution is difficult. A general computer program based on angle arc method of the linear bound- ary element method-angle are is programed, and a represented simple computational example is given to vali- date the method. The calculation results of the special transmission lines with offset inner conductor are given, It has been shown that this method is provided with a great number of advantages such as simple operation, convenient calculation and can validate to overcome the difficulty in the comer problem, and can be applied generally to the analysis of transmission lines engineering problems.