Accurate computation of drude-lorentz model coefficients of single negative magnetic metamaterials using a micro-genetic algorithm approach

Metamaterials are artificial materials having uncommon physical properties. For a fast and careful design of these structures, the development of simple and faithful models able to reproduce their electromagnetic behavior is a key factor. Very recently a quick method for the extraction of Drude-Lorentz models for electromagnetic metamaterials has been presented [1]. In this work we improve that approach, introducing a novel procedure exploiting a micro-genetic algorithm (?GA). Numerical results obtained for the case of a split ring resonator structure cleary show a better reconstruction behaviour for equivalent magnetic permittivity ?effthan those provided by [1]. © Springer International Publishing AG 2018.