D-band compact and high gain Pyramid DRA using silicon technology

This paper presents a D-band Frustum Pyramid dielectric resonator antenna (DRA) based on a coplanar-waveguide (CPW) fed for 148, and 175-GHz millimeter-wave application. The DRA takes the shape of a truncated apex pyramid. Fabrication of the Pyramid DRA is performed with wet etching of Si using KOH solution along the crystalline surfaces to fabricate the pyramid like shape. The second mask is used to define the CPW feed network on the backside of the antenna. The compact-size and low profile of the Pyramid DRA make it great candidate for short-range wireless communication and high-resolution imaging. The simulation of the antenna shows dual resonance in the D-band with a gain of 8.16db and 88% radiation efficiency at 175 GHz.