电磁场等效定理证明与应用简析

Brief Analysis of Demonstration and Application of Electromagnetic Equivalence Principle

从电磁场等效定理的应用引出等效定理,在广义Maxwell方程组的基础上明确引入外加电流源和媒质的第3个参数电导率σ,对电磁场等效定理进行了表述。对它的一般证明方法进行了分析与扩展,证明过程中不考虑电磁荷源的论述,证明了等效定理;对有传导电流源情形下的面电磁流源与面电磁荷源的连续性给出了证明。最后给出了等效定理的应用实例。

This paper derives the electromagnetic Equivalence principle from its application, explicitly introduces the external electric current source and the 3rd media characteristic parameter： conductivity on the basis of the generalized Maxwell equations and formulates this principle. Then it analyzes and extends the usual demonstration method of the electromagnetic Equivalence principle, eliminates the reasoning about the electromagnetic charge source in the demonstration process and proves the Equivalence principle. It gives the demonstration of the continuity between the surface electromagnetic current and charge on the condition of existence of conductive electric current source. Finally a simple example of applying the Equivalence principle is introduced.