Aperture models in domain decomposition method for coupled-cavity systems

In this article is a problem of electromagnetic compatibility (EMC) presented bringing in several cavities, mutually coupled between holes of small size with respect to the wavelength. The coupling function between cables placed in multiple cavities is estimated by a numerical method based on a topological approach. The intermediate data of the problem allow to bring to highlight the various types of coupling through apertures (the magnetic tangential modes and the normal electric mode) in particular the coupling between these modes which are due to the box´s geometry.