Multiband Slotted Microstrip Antenna for Terahertz Applications

This study presents the analysis and design of a microstrip rectangular patch antenna with multiband operations intended for Terahertz frequency applications. The original antenna is modified in terms of performance by incorporating an inverted U-shaped slot in the patch. Impedance matching is improved by the etched holes in the antenna patch, and the optimisation of the wide slot in the ground is studied parametrically. The proposed antenna is having an input reflection coefficient of −14.8, −44.8, −17.6 and −17.1 dB and gain of 5.3, 5.4, 4.8 and 6.5 dBi at 1.72, 3.33, 3.9 and 5.6 THz, respectively.