Silicon-On-Glass dual-tapered antenna

In this paper, a Silicon-On-Glass (SOG) tapered dielectric antenna is presented. The antenna is made from high-resistivity Si and supported on a glass substrate. To increase the antenna efficiency, the Pyrex substrate below the Si tapered sections is etched. To decrease the antenna size and the Side Lobe Level (SLL), the single tapered section is replaced by two shorter tapered sections coupled to each other. The antenna shows a directivity of 15.1 dB and a SLL of -27 dB at 126 GHz.