A new method for the synthesis of multilayered radar absorbing materials is analyzed by using
carbon nanomaterials. With respect to the literature, a desired profile of reflection coefficient is a
priori established as a function of the frequency. The goal of the synthesis is to follow this target
profile by computing thickness and type of the material of each layer until the reflection
coefficient of the electromagnetic-wave absorber best approximates the wanted reflection
coefficient. The material available for each layer is epoxy-resin reinforced by different kind of
carbon-based nano/micro powders: graphene nanoplatelets, carbon nanofibers, multi-walled
carbon nanotubes and polyaniline. The dielectric characterization of the composite materials is
performed in the frequency range 2÷18 GHz. The synthesis uses evolutionary computation by
drawing on the electric permittivity of composite materials. Three square layered electromagnetic
wave absorbers of 25 cm side are manufactured. The comparison between the target, the simulated
and the measured reflection coefficients shows a good agreement thus confirming the scientific
validity of the dielectric characterization and the proposed design method. Finally, a finite element