A Compact Phased Array Dipole Antenna Design for 2 THz 6G Communications

This study explores the design and performance evaluation of a terahertz linear phased array specifically optimized for use in future 6G communications. The primary design goals are to achieve high directional gain and enable beam steering capabilities, which are essential for efficient signal delivery in high-frequency environments. The antenna array is composed of eight circular dipole elements configured in a linear <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$1\times 8$</tex> arrangement. To facilitate effective signal transmission and simplify the overall structure, microstrip-line feeding techniques are employed. The proposed design exhibits a broad impedance bandwidth, extending from approximately 1.7 to beyond 2.3 terahertz, as measured at the −10 dB reflection coefficient threshold. In addition to its wideband characteristics, the array achieves significant radiation performance, with simulated gains exceeding 10 dBi, demonstrating its potential suitability for high-data-rate and directionally focused communication in the terahertz band.