A micro-scaled graphene-based wideband (0.57–1.02 THz) patch antenna for terahertz applications

A compact microstrip antenna for terahertz applications is proposed and its characteristic parameters are analyzed by utilizing several conducting and dielectric materials. The proposed terahertz antenna consists of a modified E-shaped patch and slot loaded T-shaped ground plane. The proposed THz antenna structure is designed on a 45 µm thick Rogers RT/Duroid 6010™ substrate with grapheme as a conducting material. The performance parameters are analyzed using High Frequency Structure Simulator and the optimized dimension of the antenna is 130 × 100 µm2. The graphene based designed antenna exhibits a wide impedance bandwidth (IBW) of 450 GHz from 0.57 to 1.02THz with a fractional impedance bandwidth (FBW) of 56.60%. The designed E-shaped antenna shows significant improvements in its FBW and bandwidth dimension ratio (BDR) due to the incorporation of rectangular slot in the T-shaped ground plane. The suggested antenna offers maximum reflection coefficient (S11) of −19.49 dB, adequate VSWR (