TY JOUR TI Electrodynamic analysis of circular waveguide with complex metal ridges and dielectric filling KW circular waveguide KW radial metal ridges KW dielectric filling KW complex contour KW plane-transverse inhomogeneity KW electrodynamic analysis JO Infocommunications and Radio Technologies AU Lonkina, D.V. AU Zemlyakov, V.. AU Gubsky, D.S. PY 2019 IS 2 PB Federal State Educational Institution of Higher Education Sevastopol State University