Rassokhina Y. Analysis methods of a discontinuities in multilayer planar structures

Object – oscillations and waves, as well as scattering processes on distributed discontinuities in multilayer planar structures based on planar transmission lines. Aim – study of scattering characteristics on distributed and multiplane discontinuities in planar transmission lines in multilayer planar structures. Subject – methods of analysis of distributed and multiplane discontinuities in planar type transmission lines in the microwave frequency range, as well as regularities of wave processes and resonant scattering on discontinuities in multilayer planar structures. Methods – Maxwell's equation, methods for solving of applied electrodynamics internal boundary value problems, the transmission line theory. Results – A method for calculating the dispersion characteristics of a finline transmission line with a finite length metal-dielectric inclusion has been developed, by means of which an open PIN diode in a finline is modeled; the transverse resonance method for the analysis of distributed discontinuities in planar transmission lines for a 2-port scheme with symmetry in the transverse direction first was developed; the transverse resonance method is developed for the analysis of four-port planar circuit contained vertical transition between microstrip line and slot line located transversely spaced by different sides of substrate; methods of boundary value problems solving for discontinuities in the form of narrow rectangular slot resonators and complex shape slot resonators in the microstrip line ground plane have been improved. Implementation – the practical importance of the developed methods lies in the possibility of designing on the basis of such structures of compact and multifunctional devices that perform several functions simultaneously in different frequency sub-bands. Application – passive and active integrated circuits of microwave and millimeter ranges with advanced functionality