A.A. Oleynik – Dr.Sc.(Eng.), Professor, 

Department «Electronic devices and systems engineering», Yuri Gagarin State Technical University of Saratov E-mail: anatoly.semenovich@gmail.com

A.A. Potapov – Undergraduate, 

Department «Electronic devices and systems engineering», Yuri Gagarin State Technical University of Saratov E-mail: potapov_andrey13@mail.ru