Millimeter-wave high gain parasitic tapered antenna made of high-resistivity silicon image-guide

A novel high gain dielectric tapered antenna, operating at the W-band, is presented. The image-guide antenna is made of high-resistivity Silicon. Two short parasitic tapered elements are used to increase the antenna gain and to reduce the side-lobe levels. A Laser cutting technique is tuned for the fabrication of the prototype antenna. The results show a return loss better than 22 dB at 90 GHz. The simulated gain is around 13.1 dBi and the radiation efficiency is 97%.