Modeling of Open Dielectric Structures with Glide and Broken Mirror Symmetries

The increased interest in exploiting the higher symmetries in the design of microwave components necessitates the development of efficient and reliable analysis methods. Analysis of dispersion properties of open structures with commercial solvers is a non-trivial problem that requires a physical insight in distinguishing between guided modes and spurious solutions. This paper presents an analytical model based on Rigorous Cou-pled Wave Analysis and derives the dispersion equation, which accounts for presence of glide or broken mirror symmetries. GRATING