V.V. Vitko1, A.A. Nikitin2, A.A. Emelyanov3, A.B. Ustinov4
1-2,4 Saint Petersburg Electrotechnical University (Saint Petersburg, Russia)
3 JSC «KNIRTI» (Zhukov of Kaluga Region, Russia)
1vitaliy.vitko@gmail.com, 2aanikitin@etu.com, 3nd1794@yandex.ru, 4ustinov_rus@yahoo.com