The Application of Quasi-period Boundary Method to the Study of RF Characteristics of Coupled-cavity Structure

This paper points out that the fake solutions appear when the quasi-period boundary condition method is applied to the coupled-cavity structure. Phase method and energy method are presented to identify the fake solutions. Then, the cause of fake solutions is made out. Theory analysis and phase method is presented to eliminate the fake solutions. Finally, the application of the method on Huges coupled-cavity structure is carried out as an example.