当天线器内部为双层磁性介质，且二者磁导率有显著差异时，选择合适的半径可抑制反射场。

The other is to restrain the reflecting field by selecting a suitable radius as filling with the double-deck magnetic substances, which have great differences in permeability.

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分析了低频电磁波在均匀介质中的磁场分布，其分布与介质的介电常数、磁导率密切相关。

Magnetic field distribution of low frequency electromagnetic wave in even medium is analyzed, which is related to the medium's dielectric coefficient and magnetic inductive capacity.

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然后，研究在各种EBG结构下，在电源和接地层内侧（即靠近介质层的一侧）增加高磁导率材料涂层对供电系阻抗特性的影响。

Then, we focused on the EMI problem from the power bus structure using both such EBG structures and the magnetic material coating on the power and ground planes.

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