Dispersion Characteristics of a Glide-Symmetric Square Patch Metamaterial with Giant Anisotropy

• Main Authors: Enriquez, Jim A, Koreshin, Eugene, Del Risco, Juan P, Belov, Pavel A, Baena, Juan D
• Format: Journal Article
• Language: English
• Published: 23-07-2024
• Subjects: Physics - Classical Physics; Physics - Computational Physics; Physics - Optics
• DOI: 10.48550/arxiv.2407.16722

This paper investigates the dispersion characteristics of a highly
anisotropic metamaterial comprised of metal square patches arranged in a glide
symmetry pattern and submerged in vacuum. Theoretical formulas are proposed to
describe the electromagnetic tensors of a corresponding uniaxial effective
medium with dielectric and magnetic responses. In addition, this work employs
theoretical analysis and numerical simulations to examine the interaction
between the metamaterial and electromagnetic waves across a broad spectral
range. Band diagrams and isofrequency contours show good agreement between
theoretical and numerical results for low frequencies and certain directions of
propagation at higher frequencies. The ease of designing the metamaterial
structure for various applications is facilitated by the derived theoretical
formulas, which enable accurate prediction of the electromagnetic response
across a wide range of frequencies based on geometric parameters.