这篇文章指出，在一个被称为“过渡频率”的频率以上，与屏蔽效能测量相关的差异可能会变得很大。它包括证明这一点的推导。在设计用于过渡频率以上的屏蔽时，应考虑这一事实。

This AIR points out that above a frequency called the "transition frequency," variances associated with the shielding effectiveness measurements can become large. It includes the derivations to demonstrate this. This fact should be taken into account when designing shielding for use above the transition frequency.