The eigenfunction expansions of the second electric dyadic Green s functions for a coaxial cavity can be derived based on the method of Gm, whereby the irrotational vector wave function L is not needed.
基于场的矢量波函数展开理论,采用Gm方法构造并矢格林函数的本征函数展开式时,无需用到无旋矢量波函数L,能够简化推导过程。