V.V. Komarov – Dr. Sc. (Eng.), Professor, Department «Electronics and telecommunications», 

Yuri Gagarin State Technical University of Saratov

E-mail: vyacheslav.komarov@gmail.com

A.S. Petushkov – Post-graduate Student, Yuri Gagarin State Technical University of Saratov; 

Engineer, Mytishchinsky SRI of Radio-Measuring Instruments, 

E-mail: petushkov-a@yandex.ru