Design of a circular tapered dielectric rod antenna for sub-THz applications

This article describes the design of a circular tapered dielectric rod antenna in the sub-terahertz (sub-THz) frequency range. The antenna is designed on a Taconic TLT-8 substrate with dimensions of 0.563mm x 0.563mm x 4.948mm. The advantages of this antenna include compactness, low loss characteristics, and ultra-wide bandwidth. The design considerations for sub-THz dielectric antennas, specifically addressing substrate selection and dielectric properties, geometric design parameters, feeding techniques, and polarization considerations. These design considerations have a significant impact on the performance and radiation characteristics of the antenna. The results obtained clearly show that the designed antenna meets all the requirements over the entire frequency band.