Dyadic Green's function of partially filled graphene‐loaded rectangular waveguides

Abstract

In this study, dyadic Green's functions (DGFs) for a partially filled rectangular waveguide in the presence of a graphene layer is derived in closed form using the Ohm-Rayleigh method and the method of scattering superposition. Having DGFs of a linear medium, the response of the structure to any arbitrary current distribution can be achieved. In this work, after a brief review on governing equations for graphene conductivity, the electric fields of the structure due to infinitesimal electric dipoles are obtained using the proposed DGFs in closed form. To show the efficiency and accuracy of the proposed method, the results are compared with the simulation results of commercial software, where excellent agreement is observed.

An efficient and highly accurate singularity extraction method for the evaluation of transient potentials of stratified media

“…Solving Maxwell equations to analyse the interaction of electromagnetic fields with components implemented in layered media is of great importance for analysing various problems. Applications of this structure include patch antennas [1][2][3][4], waveguides [5][6][7][8][9], microwave components [10,11], filters [12][13][14][15], absorbers [16,17] etc. The time-domain mixed potential integral equation [18][19][20][21] can be used for transient analysis of the electromagnetic waves in stratified media, which requires the calculation of time-domain Green's functions (TDGFs).…”

Enhanced Graphene Based Electronically Tunable Phase Shifter

“…Some of the most notable properties of graphene are its high mechanical strength, high thermal conductivity and high carrier mobility [4]. It is due to these properties that graphene has been studied in fields ranging from electronics and photonics to mechanics and building and infrastructure [5][6][7][8][9][10][11][12]. There are many applications of graphene in the terahertz band as a tunable adsorber (see, e.g., [13,14]), reconfigurable antennas (see, e.g., [15,16]).…”