A MFIE/volume integral equation approach with minimum discretization effort for substrate integrated waveguide structures and leaky wave/slot antennas

摘要

This contribution deals with a magnetic field/volume integral equation approach for the characterization of substrate integrated waveguide (SIW) components combined with leaky wave/slot antennas. The SI-waveguides are constructed with a parallel plate medium connecting the ground-planes with vias modeled by volume currents, whereas the slot areas are considered by magnetic surface currents leading to a minimization of necessary basis functions. Further features comprise a concise SIW-port modeling with field monitoring using volume functions as well as compact SIW-absorbers with only 5 required basis functions. The approach is also well-suited for the characterization and optimization of microstrip-SIW transitions.