计算天线辐射和电磁场的空间分布，可以得到天线的赤道面和子午面的方向图。-Calculate the antenna radiation and electromagnetic field spatial distribution of the antenna can be the equatorial plane and the meridional plane patterns.

此程序可以用来计算天线三维轴比。具体来说，输入三维电场theta分量和三维电场phi分量数据即可计算得到轴比。-This program can be used to caculate the 3D axis ratio of the antenna. Specifically the datas of 3D electronic are needed.