Dual Aperture Coupling: A Novel Feeding Method for 180 GHz Antenna Array

This paper presents a novel on-wafer measurement technique for characterizing a 180 GHz antenna array. The proposed antenna consists of an aperture coupled driven patch stacked with a parasitic patch. A matching network utilizing an aperture is optimized for a designed GSG probe pad, enabling precise energy coupling from the antenna to the measurement port. Simulation results demonstrate a wide bandwidth of 16% over the operational frequency range of 168 GHz to 197 GHz. Detailed simulation results of the antenna design are presented, along with experimental plans to validate the dual aperture coupling technique.