Alexis Chevalier received a Ph.D. degree in 1998 in electronics from the University of Bretagne Occidentale (France) for his contributions in characterization and modelization of microwave propagation in composites materials. He then acted as a telecom engineer in Alcatel enterprise for four years and he joined the University of Brest in 2003. He is currently an Associate Professor at the Lab-STICC laboratory, Brest, France. His research activities focus on electromagnetic properties of materials for microwave engineering. He works on developing new measurements methods and models to characterize and predict microwave properties of heterogeneous, anisotropic, absorbing, dielectric or magnetic materials.