Résumé:
Considering the attractive characteristics of SIW (Substrate Integrated Waveguide) technology in the
design of microwave and millimeter components, it becomes a good candidate for the realization of
microwave couplers that are easy to integrate with other planar or SIW waveguide-based systems. The
work proposed in this thesis is to design completely passive directional couplers in SIW technology
which exploits cylindrical metal Vias, intended for integration into planar circuits. The modeling of
this passive component is based on the finite element method using the HFSS software. The simulation
results obtained show good performance.