A transparent dual-band antenna resonating at both 750 GHz and 1.1 THz fed through an aperture is designed. Loss evaluations of the applied materials for both the conductors and the transparent substrate are investigated. After simulation in THz range, the proposed antenna is low frequency scaled to resonate at (0.75 GHz, 1.1 GHz) and (7.5 GHz, 11 GHz) to show its ability of working in THz bands. The scaled antennas are fabricated on the FR4 substrate with the permittivity of 4.3 and thickness of 1.6 mm and then a layer of ITO is added to increase the gain and efficiency. © 2018 IEEE.