Поляризационные множители для анализа поля апертурных антенн во временной области методом импульсных характеристик
The derivation of the polarization multipliers for improving the pulse characteristic method for aperture antennas field analysis is presented. Numerical electrodynamic modeling was performed using the FIT method. The results of the analytically calculated signals are compared with the simulation results, and the average error between the methods for various polarization multipliers was determined.
In this paper analysis of the analytical method radiating UWB signals using pulse characteristics, based on the physical optics, is presented. Comparison between signal calculation and FIT electrodynamic modelling is performed. Using comparison results the mean error between theoretical and computational methods for different ratio of an aperture size and signal spatial duration is determined. Criteria of the methods matching is introduced, as well as boundary condition of analytical method applying.
The interaction of short single-component vector solitons in the frame of the coupled third–order nonlinear Schrodinger equations taking into account third–order linear dispersion, self–stepping, self–stimulated Ramanscattering, cross–stepping and cross–stimulated Raman-scattering terms is considered. Conditions of reflection and propagation of the solitons through each other and also the condition of oscillator interaction (vector breather) are obtained.
The Asia-Pacific Conference on Antennas and Propagation (APCAP) is an international forum for the exchange of information on the progress and recent advancements in the research and development of innovative antenna technology and radio wave propagation. APCAP has been successfully inaugurated in Singapore in 2012 and held in Chiangmai in 2013, Harbin in 2014, Bali Island in 2015, Kaohsiung in 2016, and Xi’an in 2017 and Auckland in 2018. It will be held in Korea for the first time. APCAP 2019 will offer a rich scientific program of the highest quality with the keynote and invited speakers from all over the world and provide a broad forum of exchange for both academia and industry alike, with the aim of fostering the collaboration between them. The conference will cover a wide range of topics related to antenna technology, wave propagation, and electromagnetic theory. Prospective authors are invited to submit original contributions on their latest research findings and technology applications.
The current state of methods of the solution of boundary problems of mechanics of continuous environments is characterized. It is noted that packages of applied programs applied in engineering practice are based on the methods leading to solutions of boundary problems in the form of massifs of numbers. As a shortcoming the im-possibility of a reliable assessment of an error of such decisions for the majority of complex engineering chal-lenges is noted. As the alternative is stated an essence of a fictitious canonic regions method. It is shown that its application leads to solutions of boundary problems not in the form of massifs of numbers, but in the form of the functions which are identically satisfying with to the differential equations of boundary problems. The main ad-vantage of the fictitious canonic regions method - high precision of received results and possibility of a reliable assessment of their error. The review of stages of development of the fictitious canonic regions method is executed. The review of the works devoted to its application for the solution of scientific and engineering problems is executed.
The goal of the journal is to provide a platform for open scientific communication and discussion among scientists in the sphere of economics, sociology, pedagogy.
In the frame of the third-order nonlinear wave dispersion theory the equation of motion of a vector wave packets mass center taken in to account arbitrary inhomogeneity profile is obtained. As short vector wave packets localized motion as infinite motion is shown. Short vector wave packets localizations area can be as bigger as smaller in comparison with long vector wave packets localizations area. The effect depend from third-order linear dispersion parameter.
The author reviews the structure of a mobile radio facility system, presents an analysis of electromagnetic fields of the transmitter and of the contact disturbance source in vehicles, and provides a ratio for calculating the signal in the receiver antenna.