CST2011版本自带计算的效率的定义疑惑？

请问论坛里面有用CST2011以上版本的吗?想请教1D结果中自带计算的efficiencies中辐射效率和总效率指的是什么?例如我跑的 一个例子结果如下：

请问这两个参数到底是怎么定义的，为什么辐射效率还大于总效率?
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已经查文档解决了
Radiation efficiency: The antenna radiation efficiency is defined as the ratio of gain to directivity or equally the ratio between the radiated to accepted (input) power of the antenna:
  
Total efficiency: The total efficiency is defined as the ratio of radiated to stimulated power of the antenna:

Compared to the input power, the stimulated power considers any occurring reflections at the feeding location.
Reflection efficiency: The reflection efficiency is defined as the ratio of input to stimulated power. Note that the input power is the accepted power, i.e. reflected power and power flowing out any port of the simulated structure are not included.