怎么计算天线的上半球/下半球辐射功率？
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可通过场计算器实现该功能，具体步骤如下：
以dipole为例仿真完成后，建立一个需要积分的上半球面or下半球面，分别在上下半球面上对坡印廷矢量进行积分，按如下操作打开场计算器，进行以下操作：
但有一点需要注意antenna parameters中辐射功率和我们用场计算器得到的功率会存在一定数值误差，通过网格加密可以将该误差尽可能的缩小。
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