对于任意的一根细导线,可作如下近似:1)假定电流只是沿着导线轴的方向流

对于任意的一根细导线,可作如下近似:
1)假定电流只是沿着导线轴的方向流动;
2)电流和电荷密度可以近似地认为是线电流I及在导线轴上的σ;
3)只对导线表面上 E的轴向分量使用边界条件。
在以上假设的基础上可以得到电流的线积分方程,在线天线表面使用边界条件(8),并根据矩量法进行求解

結果 (中文) 3:

For any of a thin wire, the following approximation can be made:1) if the current flows only along the direction of the axis of the wire;2) current and charge density can be regarded as I and the line current in the wire on the shaft;3) only use the boundary conditions on the axial component of E on the surface of the wire.Based on the above assumptions, the linear integral equation of current can be obtained, and the boundary condition (8) is used on the surface of the antenna, and the solution is solved by the method of moments.