1. Department of Electrical Engineering Pan African University Institute for Basic Sciences Technology and Innovation Nairobi Kenya
2. Faculty of Sciences and Techniques, Electrical and Electronics Engineering Laboratory Marien Ngouabi University Brazzaville B.P 69 Republic of the Congo
3. School of Electrical and Electronic Engineering Technical University of Kenya Nairobi Kenya
4. Department of Electrical Engineering Université Grenoble Alpes, CNRS, G2ELab F‐38400 Saint‐Martin d'Hères France