▎ 摘　　要

Reflection through a dielectric slab located between two graphene sheets is considered. The proposed parallel-plate waveguide is assumed to be symmetric with the substrate and cladding layers are air. The two graphene sheets are considered to be identical and having frequency-dependent surface conductivity sigma(omega). The reflection through the proposed structure is investigated with the angle of incidence and the frequency of incident electromagnetic waves. (C) 2017 Elsevier B.V. All rights reserved.