Fast optimization of microwave absorbers

We address the question of the optimization of the performance of microwave absorbers. Our approach first use an optimization algorithm applied to an 1D homogenized equivalent structure. The optimization yields a refractive index profile which is then used to build a 3D curved pyramidal structure. The validity of this approach is then verified through full-wave 3D numerical simulations. We address two type of questions: optimization of the shape for a given refractive index and optimization of material properties.