About
95
Publications
8,403
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,635
Citations
Introduction
Current institution
Current position
- Professor (Associate)
Publications
Publications (95)
This article presents results of numerical modeling, optimization, fabrication and performance measurements of a new biconical antenna for modern UAV applications. The developed antenna effectively combines a set of fundamental constructive and electromagnetic requirements, which include compact structure and small total dimensions, light weight an...
Modern wireless networks, stationary terrestrial and satellite systems use many modern technologies to increase communication channels information capacity. They save limited frequency resources. In satellite communications the polarization signal processing is applied to reuse the allocated frequency bands. Usage of circularly polarized electromag...
Waveguide devices of polarization processing are key elements of modern dual-polarized antenna systems. Such antenna systems carry out polarization transformation and separation of signals with orthogonal polarizations in satellite communications and radar appliances. Well-known electrodynamic methods are used to simulate performance of such device...
The volumes of information transmitted in modern satellite telecommunication systems are constantly increasing. Antennas with signal polarization processing, which is performed by polarizers, are the fundamental elements of such systems. Therefore, the development of methods for the analysis of new polarizers is an important problem. From a technol...
This article presents the results of analysis, numerical simulations and optimization of new narrowband guide septulum polarization converters. Orthomode duplexers and polarization converter designs based on septulums are widely used in modern microwave systems with orthogonal circularly polarized signals. Septulum guide polarizer is an effective c...
This article presents results of development, optimization, and experimental measurements of electromagnetic characteristics of a wideband orthomode transducer for satellite and space communications. Analyzed design of the transducer is based on a double‐ridged waveguide junction, which allows to obtain high level of discrimination of fundamental e...
Current research is dedicated to the development of new theoretical model for guide polarization converter with irises. New created model is derived based on the equivalent circuits and transmission line representations. Specific feature of the model consists in the possibility of account of irises thickness in the simulations by approximate single...
Context. Today, there is a rapid expansion of the range of modern branches of science and technology, which actively use satellite telecommunication systems to receive, process and transmit various information. These radioelectronic systems quite often require an increase of the volumes of information, which they are processing and transmitting. In...
Development and optimization of new waveguide polarizers with conducting stepped-thickness septum were performed in the article. Matching and polarization performance of novel microwave devices were accurately modelled using numerical finite elements method. An experimental prototype of the developed waveguide polarization converter with the sugges...
Abstract The development of new mathematical model for guide polarization converter with diaphragms was carried out in the research by the method of wave matrices. In addition, numerical modeling of the performance of a polarizer with diaphragms is made by simulating the propagation of the fundamental modes with perpendicular linear polarizations....
This article presents the results of development and optimization of a new square waveguide polarizer with diagonally located square irises. The application of suggested geometrical modification of irises form and location instead of a standard wall-to-wall irises configuration allows to exclude 45-degree twists between wideband waveguide polarizer...
In this article we present the results of mathematical simulation, development and optimization of a waveguide polarizer with a diaphragm and pins. A mathematical model was developed using the proposed approach on the example of a waveguide polarizer with one diaphragm and two pins. The diaphragm and pins were modeled as inductive or capacitive ele...
This article presents the results of numerical simulation and optimization of electromagnetic characteristics of a new waveguide polarizer design containing a conducting diaphragm and pins. The theoretical model of a waveguide polarizer with one diaphragm and four pins is developed and applied for the optimization. The main electromagnetic characte...
The article presents the results of the development of a new polarizer for satellite telecommunications and radar systems, which apply polarization signal processing. Antennas of such systems allow operating at a single or at two orthogonal circular polarizations simultaneously. Antennas with circular polarizations provide a series of advantages ov...
In this article, we have developed a new mathematical model of a microwave square guide polarization converter with diaphragms. The applied model was created using the microwave theory of equivalent networks. The novelty of the developed theoretical model consists in its possibility to take into account the thickness of the diaphragms. This feature...
Abstract This research presents the design and main electromagnetic characteristics of the novel compact microwave waveguide polarizer. The developed device's structure is based on a circular waveguide and anti-phase conducting posts located in it. The application of a circular waveguide instead of a square one allowed simple integration of a polar...
Background. Nowadays processing of signal polarizations is widely applied in modern information and telecommunication radio engineering systems for different purposes. Commonly polarization processing is carried out in polarization adaptive antenna systems. The essential elements of such systems are transformation devices for polarization processin...
Background. Nowadays processing of signal polarizations is widely applied in modern information and telecommunication radio engineering systems for different purposes. Commonly polarization processing is carried out in polarization adaptive antenna systems. The essential elements of such systems are transformation devices for polarization processin...
Modern information systems use circularly polarized signals. Among them are tracking systems, remote sensing systems, satellite television systems. The use of circularly polarized signals in satellite communication systems allows to combat multipath propagation of signals in the environment, which reduces interference. By reflecting signals from di...
In this article we carry out the comparative analysis of new compact satellite polarizers based on a square guide with diaphragms. The main electromagnetic parameters of the developed microwave guide devices with various amount of diaphragms were obtained within the satellite frequency interval from 10.7 GHz to 12.75 GHz. Waveguide polarization con...
This research presents the design and characteristics of new wideband polarizer based on the square waveguide with irises. Matching and polarization characteristics of the polarizer have been simulated and optimized. Frequency dependences of the characteristics are presented. Developed polarizer can be applied in satellite information systems.
Background. One of the main problems in modern satellite telecommunication systems is to increase the volume of information transmission with simultaneous preservation of its quality. Key element of such systems is antenna systems with polarization processing, which is carried out using polarizers. Therefore, development of new polarizers and simpl...
This research presents the design and characteristics of new wideband polarizer based on the square waveguide with irises. Matching and polarization characteristics of the polarizer have been simulated and optimized. Frequency dependences of the characteristics are presented. Developed polarizer can be applied in satellite information systems.
A novel design of the polarizer based on a square waveguide with four posts and four irises for Ku‐band 10.7–12.8 GHz is proposed. The main advantage of the developed polarizer design is the option to tune its polarization characteristics by variation of the posts height. The equivalent circuit of the polarizer has been obtained using scattering an...
Frequency resources of satellite, terrestrial and other communication systems are expensive and limited. Moderntelecommunication satellite systems use signals with two orthogonal linear or circular polarizations. Such signals allowthe reuse of the same frequency band. In this case, the information capacity of the wireless channel is doubled. Circu-...
У статті запропонований простий метод оптимізації та розробки поляризаційних пристроїв с діафрагмами за допомогою методу еквівалентних мікрохвильових схем. Принцип методу полягає у розбитті схеми хвилеводного пристрою обробки поляризації на прості еквівалентні схеми. Кожна схема описується своїми матрицями розсіювання та передачі. Далі основні хара...
У статті наведена методика розробки та оптимізації системи живлення рупорної антени із коловою поляризацією. Рупорна антена має металеву конструкцію та складається із хвилеводу, що має змінний переріз та відкритий випромінюючий кінець. Електромагнітні хвилі у такій антені збуджують за допомогою хвилеводу, що вмикають до вузької стінки рупорної анте...
У сучасних супутникових інформаційних системах та безпровідних системах передачі даних широко використовують сигнали із коловими поляризаціями. Сигнали цього типу вимагають застосування спеціальних антенних систем із поляризаційним обробленням. Такий підхід дає можливість удвічі зекономити частотні ресурси, які є обмеженими. У результаті збільшуєть...
In this article we have developed a new mathematical model of a square waveguide polarizer with diaphragms. The model was created using the microwave theory of equivalent networks. The novelty of the developed mathematical model consists of the fact that it allows us to take into account the thickness of the diaphragms using more complicated T- and...
The increase of information volumes, which are transmitted in modern satellite telecommunication systems, requires the development of new signal processing technologies, microwave devices, antenna systems and methods of their analysis. In particular, polarization-adaptive antennas are widely used for this purpose. Such antennas provide the possibil...
This paper presents a new ultrawideband omnidirectional microwave biconical antenna having gain above 10 dB that has been proposed, developed, optimized and experimentally tested. The main feature of the developed biconical antenna is its possible use in uniaxial dual-band systems of omnidirectional radio monitoring. The possibility of arranging tw...
The paper presents results of the development and performance optimization of 8-channel directional coupler (DC) of orthogonal type H21 modes in a circular multimode waveguide. This DC is designed for a high precision autotracking quasi-monopulse system of low-orbiting satellites for Earth remote probing. The design and testing of a prototype opera...
One of the fundamental problems of modern digital telecommunications is the economy of digital information and frequency resources, which are highly limited. The introduction of novel telecommunication systems and 5G networks requires searching for principal solutions for the economy and reusing the frequency spectrum. Therefore, modern wireless mo...
Однією з фундаментальних проблем сучасності є економія цифрових інформаційних і частотних ресурсів. Впровадження новітніх телекомунікаційних систем і мереж 5G потребує пошуку кардинальних методів економії та повторного використання частотних ресурсів. У сучасних системах зв’язку для економії частотного ресурсу використовують нові технології для збі...
Antenna systems with polarization signal processing are key element of modern satellite telecommunications systems. In such systems polarization processing is performed by waveguide polarizers. Thus, the development of the design of new polarizers, the creation of new methods for their analysis and optimization are important problems. Waveguide pol...
The numerical optimization results of constant thickness septum polarizer’s performances for various operating fractional bandwidths (FBW) are presented in the paper. The polarizer’s structure includes a common input square waveguide, a constant thickness septum with several steps, and two output rectangular waveguides. The polarizer design of 2-,...
At the present day, antennas and signals with dual or single circular polarizations are widely used in modern satellite telecommunication systems, television systems, satellite navigation systems, civil and military radars, mobile communication systems, wireless identification systems and wireless data networks. The widespread application of signal...
In this article, the results of development, optimization, and analysis of new compact iris polarizers based on a square waveguide are presented. The polarization and matching characteristics of the polarizers with the different number of irises were optimized within the operating Ku-band 10.7-12.8 GHz. The numerical simulations and optimization of...
The collective monograph describes the integration of traditional and innovation processes of development of modern science. The general issues of the history of pedagogy, theory and methods of teaching, vocational education and educational management, the current state of philological research, social psychology, social communications, historical...
The boundary problem for eigenmodes in coaxial quad-ridged waveguides has been solved by the transverse field-matching technique. The formulas obtained provide possibilities to calculate cutoff wave numbers and electric and magnetic fields distributions of TEM, TE and TM modes in the presence of the ridges either on the inner or on the outer perfec...
The results of numerical investigation of coaxial quad-ridged waveguides’ eigenmodes of two configurations (with ridges on inner or on outer perfectly conducting circular cylinder) for different cross-section dimensions are presented. In particular, dependences of cutoff wave numbers on geometrical dimensions ratios for the first three TE modes and...
The electrodynamics eigenmodes boundary problems’ solutions for the eigenmodes of coaxial quad-ridged waveguides are presented. These solutions have been obtained by integral equations technique utilizing the proposed system of orthogonal basis functions, which take correctly into account singular behavior of the field at the ridges’ edges. The for...
A new design of a wideband (3.4-4.8 GHz) coaxial polarizer is presented. In the operating frequency band the optimized polarizer provides the differential phase shift 90°±2.5° (equivalent isolation is higher than 33 dB) and the reflection coefficient S11 less than -33 dB.
The presented contribution is devoted to evaluation of hydrogen diffusion characteristics in the TRIP 800 steel, based on C-Mn-Si-P composition, i.e. in steel with increased phosphorus content. Steel was studied after standard heat treatment, including intercritical annealing and annealing in the range of bainitic transformation. Hydrogen diffusion...
The electrodynamics eigenmodes boundary problem for sectoral coaxial single-ridged waveguides is solved by the integral equation technique utilizing the introduced system of orthogonal basis functions, which correctly take into account the singular field behavior at the ridge. The analysis of the dependence of cutoff wave numbers convergence on the...
The results of numerical investigation of sectoral coaxial ridged waveguides eigenmodes of two configurations (with a ridge on inner or outer wall) for different cross–section dimensions are presented. In particular, dependences of cutoff wave numbers on geometrical dimensions ratios for first four modes are investigated, electric field components...
The electrodynamics eigenmodes boundary problem for sectoral coaxial single-ridged waveguides is solved by the integral equation technique utilizing the introduced system of orthogonal basis functions, which correctly take into account the singular field behavior at the ridge. The formulas obtained allow to compute cutoff wave numbers and electric...
A new designs of an ultrawideband (1–15 GHz) orthomode transducer and a dual-polarized quad-ridged horn antenna based on it are presented. In the operating frequency range VSWR of the orthomode transducer doesn't exceed 1.8 and the antenna's VSWR doesn't exceed 2.1. Isolation between two ports with orthogonal linear polarizations is higher than 40...
Approximate methods and exact factorization method have been used to predict peak crosspolar of radiation levels of open-ended thin-wall circular waveguides. The ranges of minimal discrepancy with factorization method are estimated for each approximate method. Optimal diameters that minimize peak crosspolar levels in front half-space, back half-spa...
Properties of the fields and power descriptions are considered. It is shown that the form of radiopulses in a distant area is determined by a derivative from the form of impulse of current, given on Hertzpsilas dipole. Power descriptions of the electromagnetic field are proportional to the square of derivative from the form of impulse of current, g...
