Finite-element method applied in design of absorbers

This paper will develop the formular for the reflection coefficient rho from multilayered media in order Io use ir in case studies about absorbers, such as those used in electromagnetically anechoic rooms. The Finite Element Method (FEM) will be applied upon a hypothetical, planar, multilayered absorber made from 50 layers of non magnetic material (mu(r) = l). The main use of large wideband absorbers is in the building of electromagnetically anechoic and screened rooms for experimental purposes.