Eur. Phys. J. Appl. Phys. 90, 20901 (2020)
https://doi.org/10.1051/epjap/2020200014

Regular Article

Quick retrieval of effective electromagnetic metamaterial parameters by using a Multi-fidelity Surrogate Modelling approach^★

¹ Department of Information Engineering, Infrastructures and Sustainable Energy, Mediterranea University, Reggio Calabria, Italy
² Department of Civil, Energetic, Environmental and Material Engineering, Mediterranea University, Reggio Calabria, Italy
³ Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy

^* e-mail: giovanni.angiulli@unirc.it

Received: 20 January 2020
Received in final form: 8 May 2020
Accepted: 11 May 2020
Published online: 30 June 2020

Abstract

Electromagnetic metamaterials (MMs) are artificial composites that exhibit exceptional physical characteristics. Their design, which relies on the retrieving of the effective medium parameters, is usually a very time-consuming process because of the high number of full-wave simulations involved in this task. To alleviate the related computational burden, we propose to use a Multi-fidelity Surrogate Modelling (MFSM) approach. Numerical results demonstrate that this methodology turns out to be promising for a quick evaluation of the scattering parameters from which the effective constitutive parameters of a MM are retrieved, as shown by two numerical examples.