volume | PIER Journals

Abstract

In this article, a novel idea of designing a graphene based planar plasmonic patch antenna for terahertz wireless applications with detailed analysis is proposed. Based on the Surface Plasmon Polariton Waves (SPP) behaviour in graphene, a novel wideband planar graphene-based patch antenna is investigated here. As graphene with its wondered properties supports SPP in much lower infrared frequencies unlike the noble metals such as gold and Nickle which support SPP at much higher frequencies, the proposed planar antenna works on THz gap (0.1-10 THz) by covering a range of frequencies from 0.1 THz and goes beyond 10 THz, thus covering the whole THz gap. The proposed antenna is a simple planar structure with overall size of 31.8 x 6.4 μm² having a Silicon with a relative permittivity (ε_r) of 11.9 used as a substrate material, and simple plane wave is used for excitation. Furthermore, radiating material comprises single layer graphene and copper with a partial ground of copper material, and for comparison purpose, only graphene layer as a radiating material is also analysed. Single layer graphene conductivity having chemical potential of 0.4 ev, relaxation time of 0.6 ρs, and a temperature of 298 K is discussed. Parametric analysis for getting optimum results is also studied. The unity peak absorption of above 98% is observed throughout the resonating frequency range. The proposed design is numerically simulated in CST MWS v2020, and other parameters results, such as unity peak absorption and surface current, are also discussed.

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Dr. Muhammad Irfan Khattak

Dr. Muhammad Anab

Dr. Nabeel Muqarrab