Calculation of the Transmission-Reflection Coefficients of Composite Periodic Structures Using Characteristic Mode Theory

Abstract

In this paper, the calculation of transmission-reflection (T-R) coefficients of composite periodic structures is discussed based on characteristic mode theory (CMT). The single-mode structures are studied and numerical results show that the T-R coefficients calculated from CMT well coincide with those obtained from Floquet mode theory. The CMT provides us with a new perspective to understand the field behaviors of periodic structures.