Search Results - "Dubrovka, F. F."

Analytical Method of Constructive Synthesis of Compact Polarizers with Maximally Flat Phase-Frequency Characteristic Based on Two Reactive Elements in Square Waveguide by Dubrovka, F. F., Bulashenko, A. V.

“…The paper proposes a developed approximate analytical method of constructive synthesis of compact polarizers based on two reactive elements in a square…”
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Maximizing Operating Frequency Bandwidth of Microstrip-Slot Transition by Dubrovka, F. F., Tkachenko, K. O., Saratov, E. M.

“…The paper presents the results of a theoretical study of the influence of wave impedances of a shorted slot and open microstrip quarter-wave stubs on the…”
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Ultrawideband Planar Double-Sided Metallized Tapered Slot Antenna with Modified Topology by Kozachuk, Maxim A., Naidenko, V. I., Dubrovka, F. F.

“…This article presents results of electromagnetic (EM) simulation and experimental research of an original tapered slot antenna with modified topology and…”
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Evaluation of Potential Efficiency of Speech Coding Using Different Parameters of Linear Prediction by Pavlov, O. I., Dubrovka, F. F.

“…The paper presents the results for estimating the potential coding efficiency of spectrum envelope waveform (SEW) of speech signals (SS) by using the linear…”
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Device to Monitor Radio Path Operation of Earth Station of Satellite System for Remote Sensing of the Earth by Dubrovka, F. F., Fabirovskyi, S. Ye, Miskiv, V.-M. V., Prudyus, I. N., Storozh, V. H.

“…A device developed on the basis of the state-of-the-art circuitry for radio path monitoring of the earth station of satellite system for remote sensing of the…”
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Effective High-Precision Analysis of Thin Asymmetric Inductive Diaphragm in Rectangular Waveguide Using Integral Equation Method by Martyniuk, S. Ye, Dubrovka, F. F., Zakharchenko, O. S., Stepanenko, P. Ya

“…This paper proposes a solution of the electrodynamic problem of determining the generalized scattering matrix of infinitely thin asymmetric one-sided inductive…”
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Analytical and Numerical Method of Constructive Synthesis of Optimal Polarizers Based on Three Irises in Square Waveguide by Dubrovka, F. F., Bulashenko, A. V., Kuprii, A. M., Piltyay, S. I.

“…This paper proposes an approximate analytical and numerical constructive synthesis method of optimal waveguide polarizers based on three irises in square…”
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Optimal Designs of X-Band Waveguide Stepped-Thickness Septum Polarizer by Dubrovka, F. F., Piltyay, S. I., Dubrovka, R. R., Lytvyn, M. M., Lytvyn, S. M.

“…This article presents results of optimization and development of X-band square waveguide stepped-thickness septum polarizers. Electromagnetic characteristics…”
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Optimum Septum Polarizer Design for Various Fractional Bandwidths by Dubrovka, F. F., Piltyay, S. I., Dubrovka, R. R., Lytvyn, M. M., Lytvyn, S. M.

“…The numerical optimization results of constant thickness septum polarizer’s performances for various operating fractional bandwidths (FBW) are presented in the…”
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Ultrawideband Microwave Biconical High-Gain Antenna for Dual-Band Systems of Omnidirectional Radio Monitoring by Dubrovka, Fedor F., Piltyay, S. I.

“…This paper presents a new ultrawideband omnidirectional microwave biconical antenna having gain above 10 dB that has been proposed, developed, optimized and…”
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Radiation and matching characteristics of a novel dual-band dielectric loaded coaxial horn by Dubrovka, F. F., Ovsianyk, Yu. A., Dubrovka, R. F.

“…Copolar and crosspolar radiation as well as matching characteristics of a novel dual-band coaxial hybrid-mode feed horn with partial dielectric loading [1] for…”
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Analysis of dielectric loaded hybrid mode coaxial horns by Ovsianyk, Yu. A., Dubrovka, F. F., Dubrovka, R. F.

“…This article presents a numerical solution for radiation from a novel coaxial horn with a partial dielectric loading. The horn is represented as a set of…”
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Eight-Channel Directional Coupler of Orthogonal H21 Modes in Circular Waveguide for X-Band Quasi-Monopulse Antenna Systems by Dubrovka, Fefor F., Piltyay, S. I., Ovsyanik, Yu. A., Dubrovka, R. R.

“…The paper presents results of the development and performance optimization of 8-channel directional coupler (DC) of orthogonal type H 21 modes in a circular…”
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Magnification of subwavelength field distributions using a tapered array of metallic wires with planar interfaces and an embedded dielectric phase compensator by Zhao, Yan, Palikaras, George, Belov, Pavel A, Dubrovka, Rostyslav F, Simovski, Constantin R, Hao, Yang, Parini, Clive G

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Genetic Optimization of Edge Treatments of Single Offset Reflector Compact Antenna Test Ranges by Dirix, M., Gregson, S. F., Dubrovka, R. F.

“…This paper presents the results of a continuation of the authors prior study into the optimization of compact antenna test ranges (CATR) using evolutionary…”
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Improving air cooling efficiency of transmit/receive modules through using heat pipes by Nikolaenko, Yu.E., Baranyuk, A.V., Reva, S.A., Pis′mennyi, E.N., Dubrovka, F.F., Rohachov, V.A.

“…•The temperature fields of the air-cooled T/R module were obtained by simulation.•An increase in air velocity to 9 m/s lowered the temperature of the module by…”
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Eigenmodes of coaxial quad-ridged waveguides. Theory by Dubrovka, F. F., Piltyay, S. I.

“…The electrodynamics eigenmodes boundary problems’ solutions for the eigenmodes of coaxial quad-ridged waveguides are presented. These solutions have been…”
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Numerical simulation of the thermal and hydraulic characteristics of the liquid heat exchanger of the APAA transmitter–receiver module by Nikolaenko, Yu.E., Baranyuk, A.V., Reva, S.A., Pis'mennyi, E.N., Dubrovka, F.F.

“…•A new basic supporting structure in the form of a cold plate for a TR module has been proposed.•Numerical simulation is performed at a flow rate of 1; 3; 5;…”
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Matching and radiation characteristics of a phased array based on quasi-Yagi planar antennas with an additional screen by Vydalko, O. E., Dubrovka, F. F.

“…This article presents the results of numerical investigation and optimization of matching and radiation characteristics for a single planar quasi-Yagi antenna…”
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Improvement of characteristics of UWB double ridged horn antennas by Dubrovka, F F, Sushko, A J

“…Results of numerical optimization of electrical characteristics and geometry of ultra wideband double ridged horn antennas are presented. End-fire radiation…”
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