Malyshev V. Microwave properties of magnetically-controlled devices based on a surface electromagnetic wave resonator

Dissertation for the scientific degree Doctor of Philosophy on specialty 01.04.03 – «Radiophysics». – Taras Shevchenko National University of Kyiv, Ministry of Education and Science of Ukraine, Kyiv, 2021. The dissertation is devoted to experimental and theoretical research of effects of interaction of surface electromagnetic waves and oscillations of microwave range with film structures containing conducting, dielectric and / or magnetic layers for the purpose of development of physical bases of work of magnetocontrolled microwave devices on the basis of resonator. A new type of microwave resonator - SEWR based on a conductive ferromagnetic plate (film) is proposed, its microwave properties are studied, the conditions of its effective excitation are determined and methods of experimental research of such resonators in constant magnetic fields are developed. The microwave properties of nonmagnetic SEWRs of nontypical configuration (ultrathin resonators, resonators on an oversized dielectric substrate), as well as the properties of SEWR in rectangular metal waveguides with nontypical cross-sectional dimensions have been studied. Microwave filters based on SEWR and YIG film have been developed and their microwave properties have been experimentally investigated and their technical characteristics have been optimized. The microwave properties of filters based on two linked SEWRs have been developed and experimentally investigated. The existence of microwave magnon-plasmon-polaritons in the magnetic-dielectric-metal screen system is theoretically predicted, and the first experimental confirmation of their existence for a shielded ferromagnetic SEWR is obtained.