High-Gain Slot Array Antenna Integrated on Aluminum Nitride Ceramic Substrate for SubTerahertz Applications

This article proposes a 1 × 2 slot array antenna suitable for sub-terahertz (sub-THz). The antenna integrates the slot array antenna and the WR6.5-SIW transition structure on the Aluminum nitride (AlN) substrate with the substrate integrated waveguide (SIW) structure. The good dielectric properties of the AIN substrate enable the antenna to cover 133.2-134.3 GHz and reach a peak gain of 13.3 dBi. At the same time, integrating antennas on a single-layer plane substrate can reduce the production costs and improve the practicality of the sub-THz.