Exploring Dispersion Characteristics of a Glide-Symmetric Square Patch Metamaterial

This work investigates the dispersion characteristics of an anisotropic metamaterial composed of glide-symmetric metal square patches in a vacuum background. We present theoretical formulas for calculating the metamaterial’s electromagnetic properties. The validity of the model is confirmed by comparing band diagrams and isofrequency contours obtained from theory and simulations, showing good agreement for low frequencies and specific high-frequency propagation directions. These formulas and results expedite the development of further designs for the proposed structure.