A Quad-band Graphene Printed Antenna Loaded with Graphene Metasurface for Application in Terahertz Gap

This paper presents the performance analysis of a rectangular microstrip graphene-based printed antenna loaded with graphene metasurface between two dielectric substrates for efficient operation in the terahertz spectrum. The graphene patch with inset feed reports high return loss of 55.2 dB at 2.134 THz and noticeable fractional bandwidths of 23 %, 9.8 %, 6.9 %, and 4.6 % at the frequencies 1.762 THz, 2.134 THz, 2.462 THz and 2.782 THz respectively. With highest realized gain of 5.37 dBi at 2.782 THz, the proposed antenna may be suitable for spectroscopy, security scanning and numerous medical applications.

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