V. V. Biryukov – Dr.Sc. (Eng.), Professor, Department of Physics and Technology of Optical Communication, Nizhny Novgorod State Technical University n.a. R.E. Alekseev

E-mail: birukovvv@mail.ru

V. A. Grachev – Ph.D. (Eng.), Associate Professor, Department of Physics and Technology of Optical Communication, Nizhny Novgorod State Technical University n.a. R.E. Alekseev

It has been shown that roughness of the shielding surfaces of waveguides is equivalent to decrease in conductivity of these surfaces compared to the values concerning to the boundary conditions of Shukin–Leontovich for perfectly smooth surfaces. The examples of calculation of the attenuation coefficient of a rectangular waveguide with rough screening surfaces in the terahertz frequency range have been presented. The influence of the size and shape of the irregularities of the rough surface profile on the waveguide attenuation has been studied. The statistical characteristics of different models of rough surface profile have been given.

1. Il'inskij A.S., Slepyan G.Ya. Kolebaniya i volny v e'lektrodinamicheskikh sistemakh s poteryami. M.: Izd-vo MGU. 1983.
2. Biryukov V.V., Grachev V.A. Vliyanie konechnoj provodimosti stenok na strukturu polya i kharakteristiki kruglogo volnovoda // Fizika volnovykh protsessov i radiotekhnicheskie sistemy. 2014. T. 17. № 1. S. 50–53.
3. Vorob'ev E.A. Raschet proizvodstvennykh dopuskov ustrojstv SVCh. L.: Sudostroenie. 1980.
4. Yakimov A.N., Nazarov S.V. Otsenka dopustimoj sherokhovatosti obrabotki tokonesushchikh poverkhnostej na SVCh // Trudy mezhdunar. simpoziuma «Nadezhnost' i kachestvo». 2008. T. 2. S. 112–114.
5. Biryukov V.V. Raschet poter' v pryamougol'nom volnovode s sherokhovatymi e'kraniruyushchimi poverkhnostyami // Antenny. 2016. № 7. S. 53–57.
6. Krajnov V.V., Tudakova N.M., Frolova I.N. Osobennosti primeneniya e'lektroplazmennoj obrabotki // Trudy NGTU im. R.E. Alekseeva. 2013. № 5. S. 25–30.
7. Sterekhova D.I., Trifanov I.V. Metody obespecheniya sherokhovatosti na poverkhnosti kanalov volnovodov KVCh diapazona // Aktual'nye problemy aviatsii i kosmonavtiki. 2010. T. 1. № 6. S. 293.