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Information × Registration Number 0222U001395, 0120U102309 , R & D reports Title Electromagnetic fields of impulse sources and nano-oscillators in homogeneous, layered, and nonlinear media. popup.stage_title Head Dumin Oleksandr M., Registration Date 26-01-2022 Organization V.N. Karazin Kharkiv National University popup.description2  Object of research: transient and harmonic fields in layered and nonlinear media, their reflection from conducting and dielectric objects, change of their temporal and spatial characteristics, and interaction with electron spins. The purpose of the stage: to obtain numerical results of modeling the interaction of independent pulse waves in a nonlinear medium. Obtaining time dependences of fields in homogeneous dielectrics with inclusions. Using the method of evolution equations, the interaction of impulse fields with a nonlinear medium inside the lens antenna is studied. A combination of the numerical method of calculating the linear part of the problem and analytical calculation of the parameters of additional pulse sources caused by nonlinearity, which are then used as new sources that generate additional to the linear field. Using numerical methods in time domain, the characteristic transformations of pulsed fields due to their interaction with metallic and dielectric inclusions in irradiated media are obtained. The obtained time forms of the fields are used to search for hidden inclusions by processing an artificial neural network. The same method of field analysis is used to build a positioning system on short-pulse waves, which is based on a slight change in their temporal shape as a result of changing the angle of radiation of the antenna. It is compared the efficiency of signal processing by an artificial neural network in comparison with the traditional correlation approach by the problem. Numerical simulation of a single generator on a nonlinear magnetic nanostructure with the additional external resonant circuit to improve the generation of high-frequency current components is performed. The research is valuable for the construction of powerful pulsed electromagnetic field emitters, means of determining hidden subsurface objects, positioning systems of a fundamentally new type and nanogenerators of the millimeter range. Product Description popup.authors Akhmedov Rolan D. Persanov Ilya D Plakhtii Vadym A. Pochanin Hennadiy P. Pryshchenko Oleksandr A. popup.nrat_date 2022-03-09 Close