Modeling of a Direct Transition from IC-package to waveguide

New applications like 5G and car radar require higher operating frequencies. For higher frequencies the size of a typical packaged IC is of the same order of magnitude of one or more waveguide cross-sections, giving the opportunity to use the waveguide as an IC to waveguide interconnect. The excitation of an in-package waveguide needs to be modeled to design the interconnect. This paper shows that a simplified Method Of Moments (MOM) model is suitable for modeling a dipole excitation. Results for the MOM model shows good comparison with CST and an analytical model. Furthermore, the MOM model is converted into a circuit model for a direct integration with IC design tools.