A surface-integral-equation approach to the propagation of waves in EBG-based devices

We combine surface integral equations with domain decomposition to formulate and (numerically) solve the problem of electromagnetic (EM) wave propagation inside finite-sized structures. The approach is of interest for (but not limited to) the analysis of devices based on the phenomenon of electromagnetic band gaps (EBG). The key feature of our strategy, already known as linear embedding via Green´s operators (LEGO), is the modelling of the structure of concern by means of passive and newly devised active (generator) EM bricks. We elucidate how LEGO is practically applied with a few numerical examples that involve EBG-based waveguides.