A5063984575- Antenna Design and Optimization
- Electromagnetic Compatibility and Measurements
- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Microwave Engineering and Waveguides
- Gyrotron and Vacuum Electronics Research
- Advanced Control and Stabilization in Aerospace Systems
- Electromagnetic Scattering and Analysis
- Pulsed Power Technology Applications
- Photonic and Optical Devices
- Radio Astronomy Observations and Technology
- Electromagnetic Fields and Biological Effects
- Luminescence Properties of Advanced Materials
- Microwave and Dielectric Measurement Techniques
- Optical and Acousto-Optic Technologies
- Material Properties and Applications
- Solid-state spectroscopy and crystallography
- Induction Heating and Inverter Technology
- Numerical methods in inverse problems
- Electromagnetic Compatibility and Noise Suppression
- Magnetic and Electromagnetic Effects
- Radiative Heat Transfer Studies
- Particle Accelerators and Free-Electron Lasers
- Electromagnetic Launch and Propulsion Technology
- Elasticity and Wave Propagation
V. N. Karazin Kharkiv National University
2013-2024
Institute for Single Crystals
2008-2016
National Academy of Sciences of Ukraine
2008-2014
TEPCO (Japan)
2010
O.Ya. Usikov Institute for Radiophysics and Electronics
2002-2009
National Aerospace University – Kharkiv Aviation Institute
2007
National University
2002
Pskov State University
1966
Intracellular microelectrophoresis was applied to investigate the electrokinetic properties of human buccal epithelium cell nuclei after exposure cells microwaves wavelengths 8 mm (f = 37.5 GHz) and 16 18.75 at a surface power density 0.2 mW/cm(2). Irradiated or nonirradiated were suspended in flat microelectrophoretic chamber exposed an electric field 15 V/cm current flow 0.1 mA. The cells, whose altered their intracellular location towards anode externally field, considered have negatively...
Theoretically on the base of asymptotic method uniform geometrical theory diffraction and it is experimentally shown that use plane rectangular screens allows by a choice ratio screen sides essentially to improve directional characteristics resonant wire antennas.
Theoretical investigation of the amplitude and phase vectors electric magnetic field in near intermediate zones observation large aperture antennas electrical sizes. It is shown that formed such searchlight beam antennas, wherein wave about same as middle radiating antenna, regardless its size.
ÊÎÝÔÔÈÖÈÅÍÒ ÍÀÏÐÀÂËÅÍÍÎÃÎ ÄÅÉÑÒÂÈß ÀÍÒÅÍÍÛÕ ÐÅØÅÒÎÊПредмет и цель работы: Теоретически исследуются коэффициенты направленного действия (КНД) линейных плоских антенных решеток в зависимости от расстояния между излучателями длины волны.Методы методология: Вычислительными методами прикладной математики среде МаthCad рассчитаны двукратные интегралы диаграммы направленности по мощности во всем пространстве наблюдения, определяющие КНД самом общем виде.Диаграммы излучателей -элементов задаются...
The following paper describes the microwave imager/sounder MTVZA-GY of spacecraft "Meteor-M". will be launched in 2008 on Sun synchronous orbit at an altitude 830 km. used as meteorological imaging/sounding system for remote sensing ocean and land surface, well as, measuring global atmospheric temperature water vapor profiles. instrument is next version MTVZA deployed "Meteor-3M" MTVZA-OK "Sich-IM".
It is shown that if the distance between elements of equidistant arrays near-omnidirectional radiators increased from 0.5 to one wavelength, it possible increase directivity <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">D</i> and reduce width main lobes pattern an antenna array in comparison with same characteristics a continuous at comprehensible level side lobes. The studied effects can be by arranging above screen height greater than quarter...
Pattern in all planes of observation the front half, gain, efficiency antenna area, width main lobe, levels lateral and cross-polarized radiation axially symmetric parabolic reflector antennas are designed by method currents physical theory diffraction. The irradiator is given form approximate mathematical model within aperture theory. Shading focal unit algorithm computer programs recorded. It shown that system a "reflector + irradiator" can be optimized for maximum gain when predetermined...
Thus, the analysis and minimization of main types cross-polarized radiation highly directional antennas in millimeter submillimeter ranges are relevant important for many practical applications. Let us consider formation process spatial distribution reflector whole space observation (not just major E-and H-planes). In [1] was shown that case single-reflector axially symmetric parabolic transverse polarization is equal to zero direction beam on basic polarization, as well principal planes...
The method of induced electromotive forces and the uniform geometric diffraction theory are inthe base algorithm developed for calculation input impedance symmetricelectric dipole located above infinitely thin rectangular metal shield. Resonant arm length half-wave resonant at which reactive partof its resistance equals to zero, is determined as a function thickness, dimensions shape shield differentdipole-to-shield distances orientation towards It shown that shieldpresence results in...
Directivities of linear and plane homogeneous antenna arrays consisting different radiators were simulated in the MathCad environment when distance between numbers varied wide limits. Antenna with linear, rectangular square aperture considered. The highest attainable directivity array given was determined. It shown that distort shapes spectra transmitted received signals signal wavelengths are shorter than radiators.
В статті наведено кількісний аналіз характеристик спрямованості та смуги робочих частот резонансної дипольної антени, розташованої паралельно до ідеально провідного екрана квадратної форми з врахуванням ефекту синфазності дифрагованих полів на всіх чотирьох крайках геометрооптичним полем в напрямку нормалі екрана, розміри якого забезпечують синфазність цих полів. У роботі використано розв’язок тривимірної векторної задачі дифракції випромінювання диполя екрані прямокутної форми, отриманий...