A Metasurface Inspired Terahertz Antenna for Multiband Applications

Abstract

In this paper, the performance of a metasurface-based slot antenna in THz region has been studied. A rectangular slot has been designed on the bottom side of the antenna, where a square-shaped patch behaving as radiating element has been designed on the centre of the slot. The antenna offers fractional bandwidths of 6.04%, 12.84% and 2.76% at the frequencies 0.32 THz, 0.35 THz and 0.41 THz, respectively. The maximum realized gain of 7.51 dBi has been achieved at 0.35 THz, and unidirectional radiation pattern has been observed at all the operating frequencies. © 2021, Springer Nature Singapore Pte Ltd.