V.M. Davydochkin - Ph. D. (Eng.), Head of Department of Microwave Oven of Devices and Aerials, Open Company enterprise «KONTAKT-1» (Ryazan). E-mail: skb@kontakt-1.ru S.V. Davydochkina - Ph. D. (Eng.), Associate Professor, Department of Higher Mathematics, Ryazan State Agrotechnological University. E-mail: dav-sv@yandex.ru V.V. Ezersky - Dr. Sc. (Eng.), Professor, Department of Radio Management and Communication, Ryazan State Radio Engineering University. E-mail: ezerski@yandex.ru