Vorob’yov G. S., Petrovskii M. V., Krivets A. S. // Radioelectronics and Communications Systems. 2006. <...> Vorobyov G. S., Petrovsky M. V., Ruban A. I. t al. // Telecommunications and Radio Engineering. 2007. <...> Modelling of Cerenkov and diffractional radiations on the periodical metal-dielectric sructures G. S. Vorobyov, V. O. Zhurba, M. V. Petrovsky, A. A. Rybalko, Yu. <...> V. Shulga Sumy State University, 2 R.-Korsakov str., Sumy, 40007, Ukraine E-mail: vp@sumdu.edu.ua The general method of an experimental modelling of Cerenkov and diffractional radiations on periodical metal-dielectric structures is described. <...> A multipurpose scheme of experimental apparatus, which is realized in the millimeter wave band, is also described. <...> The modelling of basic regimes of excitation of spatial waves of Cerenkov and diffractional radiations has been carried out. <...> PACS: 41.60.Bq Keywords: metal-dielectric structure, Cerenkov radiation, diffractional radiation, dielectric waveguide, electron beam. <...> Разработана и реализована схема экспериментальной установки миллиметрового диапазона волн, проведено моделирование основных режимов возбуждения пространственных волн черенковского и дифракционного излучений, а также тестирование их путем сравнения с численным анализом! <...>