V.A. Ivanov, D.V. Ivanov, M.I. Ryabova, A.A. Chernov

P.N. Zakharov - Ph. D. (Phys.-Math.), Associate Professor, Faculty of Physics, M.V. Lomonosov Moscow State University. E-mail: zakharov1@mail.ru A.F. Korolev - Ph. D. (Phys.-Math.), Associate Professor, Faculty of Physics, M.V. Lomonosov Moscow State University. E-mail: korolev_phys@mail.ru E.V. Mitrofanov - Post-graduate Student, Graduate Research Scientist, Kotel\'nikov Institute of Radioengineering and Electronics of RAS. E-mail: mitrofanov_ireran@mail.ru V.A. Cherepenin - Dr. Sc. (Phys.-Math.), Professor, Corresponding Memeber of RAS, Deputy Director of Kotel\'nikov Institute of Radioengineering and Electronics of RAS. E-mail: cher@cplire.ru

D.V. Ivanov1, V.A. Ivanov2, M.I. Ryabova3, V.V. Ovchinnikov4, N.A. Konkin5

1–5 Volga State University of Technology (Yoshkar-Ola, Russia)

1 IvanovDV@volgatech.net, 2 IvanovVA@volgatech.net, 3 RyabovaMI@volgatech.net, 4 OvchinnikovVV@volgatech.net, 5 KonkinNA@volgatech.net

D.V. Ivanov1, V.A. Ivanov2, A.A. Kislitsin3, M.I. Ryabova4

1-4 Volga State University of Technology (Yoshkar-Ola, Russia)

1 IvanovDV@volgatech.net; 2 IvanovVA@volgatech.net; 3 KislitsinAA@volgatech.net; 4 RyabovaMI@volgatech.net