A 120 GHz 3D-printed plastic elliptical lens antenna with an IPD patch antenna source

In this paper, we investigate the performance of a 3D-printed plastic lens operating in the 120 GHz frequency band. An Integrated Passive Device module with built-in linearly polarized patch antenna is used as the source of the lens. The profile of the lens is based on elliptical shape. It is first optimized with Geometrical Optics (GO) and Physical Optics (PO) methods. Then, full-wave simulations are conducted to fine tune the overall antenna-structure. Using a lens height of 10 mm, the overall antenna has a simulated realized gain higher than 15 dBi from 120 GHz to 130 GHz. The lens and the patch antenna have just been manufactured and measurements will be presented in the final paper.