1. Electronics Engineering Department, TecNM-Instituto Tecnológico de Celaya, 38010 Celaya, Mexico
2. Electronics Technology Area, Rey Juan Carlos University, 28933 Mostoles, Madrid, Spain
3. Electronics Department, Tecnológico Nacional de México-Cenidet, 63490 Cuernavaca, Mexico
4. Electronics Department, Instituto Tecnológico Superior del Sur de Guanajuato, 38980 Uriangato, Mexico