A.M. Bobreshov – Dr.Sc.(Phys.-Math.), Professor, Head of Department of Electronics, Dean of Faculty of Physics, Voronezh State University

E-mail: bobreshov@phys.vsu.ru

A.S. Zhabin – Assistant, Department of Electronics, Voronezh State University

E-mail: zhabin@phys.vsu.ru

A.D. Ryazantsev – Student, Department of Electronics of Faculty of Physics, Voronezh State University E-mail: ryazantsev@phys.vsu.ru

V.A. Stepkin – Ph.D.(Phys.-Math.), Associate Professor, Department of Electronics, Voronezh State University E-mail: stepkin@phys.vsu.ru

G.K. Uskov – Dr.Sc.(Phys.-Math.), Associate Professor, Department of Electronics, Voronezh State University E-mail: uskov@phys.vsu.ru

I.M. Lerner1, A.N. Khairullin2, V.I. Il’in3, G.A. Garifullina4

1,2 Kazan National Research Technical University named after A.N. Tupolev (Kazan, Russia)

3 Kazan Federal University (Kazan, Russia)

4 Kazan National Research Technological University (Kazan, Russia)

1 aviap@mail.ru, 2 mr.khayrullin.a@gmail.com, 3 vilin43@mail.ru, 4 gulnarakdrv03@mail.ru