Lens coupled bow-tie antenna for millimeter wave operations

Bow-tie antenna for terahertz resonant tunnelling diode based oscillators on high dielectric constant substrate

“…This is a common problem with antennas fabricated on high dielectric constant substrates and requires a practical solution in order to enable air-side radiation [11]. A practical solution to this problem has been to use a hemispherical lens on the backside to collect the power from the bottom side of the substrate [12][13][14][15][16][17][18]. Our current work (Section III) aims at designing antennas that can be integrated with RTD THz IC oscillators and which radiate into the air perpendicular to the substrate, to realise compact sources.…”

“…Measured and simulated results show the feasibility of the proposed design. The proposed design does not require employment of bulky lenses attached to the substrate; the technique which has been widely used to extract the RF power and increase the bow-tie antenna gain [13][14][15][16][17][18]. In this paper, a grounded bow-tie slot antenna for terahertz applications was presented.…”

“…Most of the radiation in the present design is directed into the substrate due to the high dielectric constant of the Indium Phosphide (InP) substrate [11]. A common solution to this problem has been to use a hemispherical lens on the backside of the substrate to collect the RF power and increase the antenna gain [12][13][14][15][16][17][18]. Instead of employing such bulky lenses, a promising alternate realisation to have most of the energy radiated away from the substrate is presented in this paper.…”