Use of the circuit approach to solve large EMC problems

Like electromagnetic topology, the equivalent electric circuit theory can be transposed to solve large electromagnetic systems. Compared to measures into a cavity, an analogy with coupled circuits will be made. Kronʹs formalism has been chosen to describe the system of equations. We will use a hyper matrix impedance with sub-matrix describing some interactions of the system. The inverse of the impedance matrix will give us scattering parameters S 21 between a transmitting and a receiving antenna installed in the cavity. Next, a second receiver will be added outside the cavity. m of this article is to show the interest of Kronʹs method applied to complex systems, in which many of physical phenomena are involved. To cite this article: S. Leman et al., C. R. Physique 10 (2009).