1. Department of Electrical Engineering, IUT-FV BandjounLaboratories d’Automatique et Informatique Appliquée (UR-AIA), Bandjoun, Cameroon
2. Laboratory of Mechanics, Department of Physics, Faculty of Science, University of Yaoundé 1, Yaoundé, Cameroon
3. Laboratory of Electronics and Signal Processing, Department of Physics, University of Dschang, Dschang, Cameroon