1. Department of Micro- and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, Professor Popov Str. 5, 197022 St. Petersburg, Russia
2. Department of Electronics and Information Technologies, Kabardino-Balkarian State University Named after H.M. Berbekov, Chernyshevsky Str. 173, 360004 Nalchik, Russia