Broadband Launcher-in-Package using HDI Substrate for Radar Applications

In this paper, a wideband launcher-in-package is proposed for FOWLP or FCCSP package mounted on a HDI substrate in radar applications. A differential stripline to rectangular waveguide transition has been shown using a conductor backed patch antenna. The new hybrid solution in 2023 Ansys HFSS has been explored where both modal and terminal wave port was combined in one solution. The simulated results show wideband performance from 71.2 GHz to 88.8 GHz. A 20 dB return loss and 0.74 dB insertion loss was obtained at 77 GHz.