Highly Integrable High Gain Substrate-integrated Planar Lens for Wide D-band Applications

We present for the first time a 3-bit linearly-polarized substrate-integrated planar lens with focal source antenna monolithically fabricated with a low cost PCB technology operating in D-band. The effective volume occupied by this compact antenna is 10.5x10.5x4.52 mm
³
. An experimental gain of 21.1 dBi at 153 GHz, an aperture efficiency of 35.7%, a 3-dB gain bandwidth greater than 19% and a cross-polarization level lower than 27.6 dB are demonstrated.