A.A. Nikitin1, V.V. Vitko2, A.A. Emelyanov3, A.B. Ustinov4
1–4 Saint-Petersburg State Electrotechnical University (LETI) (Saint Petersburg, Russia)
3 JSC «KNIRTI» (Zhukov of Kaluga Region, Russia)
1aanikitin@etu.ru, 2vitaliy.vitko@gmail.com, 3eaa15@knirti.ru, 4Ustinov_rus@yahoo.com