Roberto Diaz Ortega was a researcher at the Institute for Applied Microelectronics at the University of Las Palmas de Gran Canaria, Spain.

Sunil L. Khemchandani is a senior researcher at the Institute for Applied Microelectronics and Associate Professor of Electrical Engineering in the Department of Electronic and Automatic Engineering at the University of Las Palmas de Gran Canaria, Spain.

Hugo Garcia Vazquez is a researcher at the Institute for Applied Microelectronics at the University of Las Palmas de Gran Canaria, Spain.

Francisco Javier del Pino Suarez is a senior researcher at the Institute for Applied Microelectronics and Associate Professor of Electrical Engineering in the Department of Electronic and Automatic Engineering at the University of Las Palmas de Gran Canaria, Spain.