A.V. Afanasyev - Ph. D. (Eng.), Associate Professor, Saint-Petersburg Electrotechnical University «LETI»
B.V. Ivanov - Ph. D. (Eng.), Associate Professor, Saint-Petersburg Electrotechnical University «LETI». E-mail: bvivanov@yandex.ru
V.A. Ilyin - Ph. D. (Eng.), Associate Professor, Saint-Petersburg Electrotechnical University «LETI». E-mail: ilyicmid@gmail.ru
A.F. Kardo-Sysoev - Dr. Sc. (Phys.-Math.), Leading Research Scientist, Ioffe Physical-Technical Institute (St Petersburg). E-mail: alx@helen.ioffe.ru
V.I. Tihomirov - Engineer, Saint-Petersburg Electrotechnical University «LETI». E-mail: cmid@inbox.ru
A.A. Smirnov - Engineer, Research Institute «Vector» (Saint Petersburg). E-mail: gr4211@mail.ru

A.M. Bobreshov - Dr. Sc. (Phys.-Math.), Professor, Department of Electronics, Dean of Faculty of Physics, Voronezh State University E-mail: bobreshov@phys.vsu.ru S.E. Neskorodov - Post-graduate Student, Voronezh State University E-mail: neskorodov93@mail.ru G.K. Uskov - Dr. Sc. (Phys.-Math.), Associate Professor, Department of Electronics, Faculty of Physics, Voronezh State University E-mail: uskov@phys.vsu.ru

R.F. Khaliullin1, A.I. Sulimov2

1,2 Institute of Physics, Kazan Federal University (Kazan, Russia)

1 sven456634@gmail.com; 2 asulimo@gmail.com