Tunability of Radiation Pattern of the H-Polarized Natural Waves of Dielectric Waveguide with Infinite Graphene Plane and Finite Number of Graphene Strips at THz

We investigate the radiation of the THz natural waves of the dielectric waveguide with graphene plane scattered by finite number of graphene strips. Our mathematically accurate analysis uses the singular integral equations method. The discretization scheme employs the Nystrom-type algorithm. The complex-valued propagation constants of the natural waves and corresponding fields are determined numerically from the equation, which also involves the kernel-function of the singular integral equation. The method we use is meshless and full-wave. The convergence is provided by the mathematical theorems. By varying the chemical potential of graphene and structural geometrical parameters, we examine the elevation angle of the main lobe of the radiation pattern and the radiated power.

Automated summary

In this study, we accurately analyze the radiation of THz natural waves in dielectric waveguides scattered by a finite number of graphene strips using mathematical methods. We determine the numerical solutions for the propagation constants and fields of the natural waves, which are obtained from the equation involving the kernel function of the singular integral equation. By varying the chemical potential of graphene and structural geometrical parameters, we investigate the impact on the elevation angle of the radiation pattern and the radiated power.