A5101502324- Fluid Dynamics and Turbulent Flows
- Antenna Design and Optimization
- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Computational Fluid Dynamics and Aerodynamics
- Advanced Antenna and Metasurface Technologies
- Rheology and Fluid Dynamics Studies
- Gas Dynamics and Kinetic Theory
- Geomagnetism and Paleomagnetism Studies
- Satellite Communication Systems
- Advanced Mathematical Modeling in Engineering
- Advanced Numerical Methods in Computational Mathematics
- Differential Equations and Boundary Problems
- Radio Astronomy Observations and Technology
- Differential Equations and Numerical Methods
- Electromagnetic Compatibility and Measurements
- Cyclone Separators and Fluid Dynamics
- Pulsed Power Technology Applications
- Advanced Electron Microscopy Techniques and Applications
- Particle Dynamics in Fluid Flows
- CO2 Sequestration and Geologic Interactions
- Mining and Gasification Technologies
- Engineering and Materials Science Studies
- Aquatic and Environmental Studies
- Laser Design and Applications
All-Russian Scientific Research Institute of Radio Engineering
2000-2024
Moscow Aviation Institute
2020-2024
Institute for Computer Aided Design
2016-2023
Krasnoyarsk Scientific Center
2015
Siberian Branch of the Russian Academy of Sciences
2015
Russian Academy of Sciences
2009-2014
The techniques of grating lobe (GL) suppression in planar phased array antennas composed periodic subarrays with rectangular or triangular grids large element spacing are considered. GL is achieved using an aperiodic arrangement subarrays. This approach provides a means to decrease GLs without significant increase structural complexity relative arrays; moreover, other antenna parameters do not essentially change compared arrays. Estimations maximum presented. Antenna characteristics such as...
МНОГОЛУЧЕВЫЕ АНТЕННЫ ДЛЯ СИСТЕМ РАДИОЛОКАЦИИ И СВЯЗИА. В. Шишлов 1,2 , Б
Modern radio systems with active phased array antennas (APAA) are created in a wide frequency range from the meter of wavelength to millimeter range. Due development technology, they becoming cheaper, lighter and more compact both applying very large-scale integration circuits using tile layout. The reduction price is achieved, particular, due use silicon-germanium substrates (SiGe) microcircuits, which used computer technologies, instead gallium arsenide (GaAs). ones can have digital...
In a number of wireless communication systems with multibeam antennas, the distance from antenna to subscribers in different parts service area varies significantly.Such include high-altitude platform station systems, based on low Earth orbit and medium satellites, several others.If such system uses an identical beams, throughputs lines cells can differ by more than order magnitude due variation distance.To equalize across all within area, beams be employed.The gain these should proportional...
In this report, some problems of initial phases determination PAA channels (PAA calibration) are considered. These usually arise during in-service re-calibration PAAs, when it is not possible to provide a measurement environment which close laboratory environment. Specific challenges that occur multielement calibration procedures taken into account. Calibration errors because inaccurate probe positioning Influences signal reflections from objects on results examined. Effects power quality...
Options of Ku- and Ka-band antenna terminals for satellite communication are considered. Most the time, terminal should operate in Ka-band, when hydrometeors appear signal level drops down below threshold, modem automatically switches system to Ku-band, ensuring continuity communication. Three options compared. It is shown that at present, best option terms cost, switching time frequency band, quality radiation characteristics, reliability consisting two single-band reflector antennas Ka-bands.
The concept of an active phased array antenna made on a multilayer printed circuit board is presented. Main parts the are considered. Feasibility discussed.
Основной особенностью двумерного турбулентного течения, постоянно возбуждаемого внешней силой, является возникновение обратного каскада энергии. За счет нелинейных эффектов пространственный масштаб вихрей, создаваемых увеличивается до тех пор, пока рост не будет остановлен размером ячейки. В последнем случае энергия накапливается на этом масштабе. При определенных условиях такое накопление энергии приводит к возникновению системы когерентных вихрей. Наблюдаемые вихри имеют размер ячейки и в...
An antenna system for automotive intelligent cruise-control application contains two separate printed circuit antennas: wide beam transmit and three narrow receive antenna. The Rotman lens beamforming network is used-to provide multibeam operation of design the discussed test results are presented.
Powerful high gain phased antenna arrays of modular structure for millimeter wave (MMW) radars are considered. The array architecture and performance discussed. Ways achieving a radiated power described compared. Examples under development presented.
The aim of the research.Determination prospects application functionalized by DNA-aptamers magnetic nickel nanodiscs with gold coating for targeted cell cancer surgery.Materials and methods.As tumor model was used Ehrlich ascites carcinoma.Theoretically experimentally were investigated structures field permalloy cobalt disks Au-Fe ( 20) Ni 80) -Au Au-Co-Au.Results.It executed estimation mechanical impact to membrane in an alternating field.It determined optimum composition, geometry...
The stability of the laminar flow between two rotating cylinders (the Taylor–Couette flow) is numerically studied. simulation based on equations motion an inviscid fluid Euler equations). influence exerted by physical parameters problem (such as gap width cylinders, initial perturbation and velocity difference cylinders) analyzed. It shown that onset turbulence accompanied formation large vortices. results are analyzed compared with those similar studies.