Research on a Pyramidal Horn Antenna in W-Band

In this paper, a pyramid horn antenna is design for millimeter wave radar. The antenna is completely machined out by 3D printing technology, which comprises a horn antenna and a flange with a total size of 25mm×20mm×50 mm. Its bandwidth can cover W-band(75GHz-110GHz), and its gain is basically greater than 22dBi in the working band. Besides, the horn antenna has an advantage to achieve an excellent direction.