1. Complex dielectric permittivity of disperse heterogeneous systems and their components L.M. Atroshenko, N.N. Gorobets, L.P. Safronova complex dielectric permittivity, disperse system Vestnik KhNU ¹712 Pages. 816
The relationship between complex dielectric permittivity of twocomponent disperse system, its components' volume shares and dielectric permittivity has been obtained. The method for computation of volume shares and dielectric permittivity of water solution hydrated inclusions is suggested
2. Method of finding permittivity, volume characteristics and hydratation of components of water solutions L.M. Atroshenko, N.N. Gorobets, L.P. Safronova dielectric permittivity, bound water, hydration, specific volume, density Vestnik KhNU ¹712 Pages. 1720
A method for calculation of permittivity of bound water, hydration of substances, volume shares and specific volumes of water solution components, based on data of measurements of the complex permittivity and solution densities, was suggested
3. Telemetering methods, devices and their application in vertebrology S.N. Kulish, O.Y. Kagan radiotelemetring research, transmitter, radio channel, implant devices, spine, impellent segments Vestnik KhNU ¹712 Pages. 3336
In the given job the review and the analysis of existing telemetering methods of research and diagnostics of various diseases in medicine is resulted. It is offered to use means of radiotelemetering research for registration of mechanical parameters arising on contact and lateral surfaces of impellent segments of a backbone. The block diagram of multichannel telemetering system is resulted and the basic requirements shown to this system are described
4. Radiation of transient fields from the open end of coaxial waveguide with shifted internal conductor N.N. Gorobets, A.N. Dumin, O.A. Dumina transient field, coaxial waveguide with shifted internal conductor, TEMwave, radiation Vestnik KhNU ¹712 Pages. 4246
The problem of the radiation from the open end of coaxial waveguide with shifted internal conductor excited with transient source is solved in time domain. The incident into the aperture TEMwave in coaxial waveguide with time dependence in form of gaussian pulse is considered as a source. The influence of a flange on radiated field characteristics is examined. The application of dielectric insertions into the aperture for the increasing of radiation along normal to aperture is studied
5. Scattering electromagnetic waves by coupling aperture of electrodynamic volumes in presence of finite sizes impedance body M.V. Nesterenko impedance vibrator, narrow slot, distributed surface impedance, rectangular waveguide Vestnik KhNU ¹712 Pages. 4751
Systems of integraldifferential equations concerning surface equivalent magnetic and electrical currents which are excited with impressed sources of electromagnetic field in the coupling aperture of electrodynamic volumes and in the finite sizes impedance body have been obtained. The approximate analytical solution of the equations system for the narrow transverse slot in the broad wall of rectangular waveguide with the thin impedance vibrator was represented. Also theoretical and experimental graphs of electrodynamic characteristics of such structure in dependence on the wavelength in the base oscillations band the waveguide was represented
6. Application of the digital holographic interference microscope for investigation of human red blood cells 3D morphology T.V. Tishko, V.P. Titar, D.N. Tishko digital holographic interference microscope, erythrocyte, morphology, sphericity coefficient, diagnostics, microobject Vestnik KhNU ¹712 Pages. 5255
Results on the digital holographic interference microscope for 3D imaging of native blood erythrocytes are presented. Blood samples of healthy people and patients with different pathologies were used. Three basic morphology kinds of blood erythrocytes were detected. A sphericity coefficient was used as quantitative characteristics of blood erythrocytes morphology. It is shown that, blood erythrocytes 3D morphology is very important diagnostics characteristics in medical practice. The digital holographic interference microscope is an effective device for the purposes of medical diagnostics
7. Radiation from dualmode circular waveguide excited by dominant and higherorder modes simultaneously A.V. Shishkova, N.N. Gorobets microwaves, multimode waveguide, diffraction, higherorder modes, Weinstein rigorous technique, WienerHopf technique, radiation pattern. Vestnik KhNU ¹712 Pages. 5661
On the basis of Weinstein rigorous solution to the problem of electromagnetic mode diffraction at an openended circular waveguide the characteristics of radiation from multimode waveguides excited by H_{11} dominant mode and. higherorder modes (E_{01}, and H_{01}) simultaneously are calculated and analyzed. The calculation of radiation from waveguide with dual mode excitation is carried out in the whole observation space and in wide frequency bandwidth, taking into account the higherorder mode transformation and currents leaking on the external surface of a waveguide.
8. Integral representation of green function in parallelplate and rectangular waveguide, and in resonator as well V.A. Katrich, F.S. Novokhatsky waveguides, Green function, fundamental solution, radial function, elliptical teta function, image method, calculus of residues, integral transformation, grating, formal variative Vestnik KhNU ¹712 Pages. 6770
The known results connected with Green function representation by elliptical thetafunction are generalized. New representations of Green function for some widely used types of waveguides are obtained. Earlier, these Green functions are presented either in form of series with nonuniform convergence or in form of integrals containing Hancel functions, which are reduced to asymptotic expressions in far zone. On this work integral representations of Green functions are obtained for Cases where the quadrature formula exists. The method of analytical continuation with parameter is applied
9. Features of forming patterns of planar antennas arrays A.A. Bulgakova, N.N. Gorobets, V.A. Katrich, V.A. Lyashenko planar arrays, pattern, sidelobes, radiator elements, interference maximums triangular grid Vestnik KhNU ¹712 Pages. 7175
Computer analysis results of an influence of a radiating aperture form of the planar array on its pattern have been presented. It is shown that there is dependence of levels of interference lobes and also near and far sidelobes of pattern in one of main positions of observation planes on number and radiators in plane which is orthogonal to main observation plane
10. The influence of the inner chanal of a periodic irisloaded circular waveguide concerning its eigenmode mutual transformations He Shi, S.K. Katenev, S.N. Shulga dispersion, Brillouin diagram, mode transformation Vestnik KhNU ¹712 Pages. 8083
The mutual eigenmode transformations are considered of a periodic irisloaded circular waveguide against variations or its inner radius, using BriUouin diagram characteristics. The specific features of the waveguide regular and periodicity modes of Eo,and asymmetric waves are pointed out
11. GaAsGunn diodes with small levels of power constitution for mmrange oscillators E.D. Prokhorov, A.V. Dyadchenko, N.E. Polyansky Gunn diodes, microwave powers, efficiency, generators mmrange Vestnik KhNU ¹712 Pages. 115118
Experimentally investigated small level operating power GaAs generators mmrange. Samples of diodes made in Problem laboratory of semiconductor engineering of the Karazin Kharkov National University. GaAs Gunn diodes oscillators operated in continuous mode. The obtained experimentally operated powers made 10...30 mW, the useful microwave powers  0,1...0,3 mW at an efficiency of 1...2 % over the range frequencies of 60...75 GHz. Probably further reduction consumed by diodes and oscillators of power up to hundreds and tens 10_{3}W
12. ONBOARD RADIOHOLOGRAPHIC INFORMATION SYSTEM of DISTANT ACTION CREATED ON THE BASIS OF APPLICATION of middleaperture SPHERICAL antenna I.V. Baryshev, N.N. Gorobets, N.I. Matjuhin radioholography, multiitem coherent systems, middleaperture spherical and ring antennas, range of direct visibility Vestnik KhNU ¹756 Pages. 1821
Basic opportunities of creation of perspective radioholographic information system which is capable to carry out full radartracking service of a stream of the objects which are taking place on big distance are considered, and on small distance  to receive their radioholographic image. Formulas for calculation of the antenna pattern are received depending on number of elements of the antenna which determine a level of its side lobes
13. ONBOARD RADIOHOLOGRAPHIC INFORMATION SYSTEM of DISTANT ACTION CREATED ON THE BASIS OF APPLICATION of middleaperture SPHERICAL antenna I.V. Baryshev, N.N. Gorobets, N.I. Matjuhin radioholography, multiitem coherent systems, middleaperture spherical and ring antennas, range of direct visibility Vestnik KhNU ¹756 Pages. 2226
Basic opportunities of creation of perspective radioholographic information system which is capable to carry out full radartracking service of a stream of the objects which are taking place on big distance are considered, and on small distance  to receive their radioholographic image. Formulas for calculation of the antenna pattern are received depending on number of elements of the antenna which determine a level of its side lobes
14. Radioacoustic wind sounding of the atmosphere bo un dat y layer: history of the development and perspectives Y. N. Ulyanov, V. I. Vetrov, N. G. Maksimova radioacoustic, wind, sounding, atmosphere, boundary layer, profile, adaptation Vestnik KhNU ¹756 Pages. 2732
The article is devoted to the potentialities of the method of radioacoustic sounding when monitoring the vertical structure of the wind in the atmosphere boundary layer (ABL). A review of methods for radioacoustic measurements of the horizontal wind velocity and direction is based on the developments of the authors and their experience in this field as well as on the world experience. It is emphasized that the radioacoustic method for sounding the wind in ABL is perspective, since for the RAS equipment, there are not characteristic neither high levels of the electromagnetic pollution of the environment like for radiolocation wind profilers  radars nor loss of the serviceability at ligh levels of the ambient acoustic noise like for acoustic wind profilers  sodars.
15. ELECTROMAGNETIC WAVE SCATTERING FROM ANISOTROPIC INCLUSION IN RECTANGULAR SHORTCIRCUIT WAVEGUIDE N.P. Zhuck, V.I. Fesenko, S.N. Shulga, O.V. Bagatskaya, He Shi scattering matrix, rectangular waveguide, anisotropic medium Vestnik KhNU ¹756 Pages. 3337
The problem of determination of the scattering matrix coefficients from anisotropic inclusion in one side shortcircuit waveguide was considered. Calculation of the scattering matrix coefficient S_{10} for the anisotropic slab in the end of the empty rectangular waveguide is presented
16. ELECTRODYNAMIC MODELING OF COMPOSITE MEDIA WITH SIMALTENEOUSLY NEGATIVE REAL PARTS OF PERMITTIVITY AND PERMEABILITY S.N. Shulga, I.E. Khodasevych composite media, thinwire resonance inclusions, permittivity, permeability, scattering of electromagnetic waves Vestnik KhNU ¹756 Pages. 3841
This paper presents physical and mathematical model and investigation of electromagnetic properties of composite material made of straight and curved conducting resonance inclusions placed into isotropic media and forming periodic lattice. The effective constitutive parameters of the composite material are found. It is revealed that on resonance frequency real parts of permittivity and permeability of such media can assume simultaneously negative values. The problem of reflection and transmission of plane electromagnetic wave through a sequence of layers made of such composite material is solved, numerical results are presented
17. Amplitude and noise features of detectors a mm of range of lengths of waves on base of contacts a metalsemimetal BiSb O.N. Sukhoruchko, V.T. Plaksiy, E.D. Prokhorov, A.V. Dyadchenko contact metalsemimetal BiSb, power zones, contact a metaisemimetal BiSb, millimeter range of lengths of waves, relative noise temperature, influence of displacing and resistances of contacts on sensitivity Vestnik KhNU ¹756 Pages. 113117
In work are brought results of analytical and experimental thermoelectrical detector study with the point contact a metalsemimetal BiSb. Determined relative noise temperature, as well as influence of displacing and resistances of contacts on the sensitivity in 8 mm range of waves.
18. SPECKLE – INTERFEROMETRICIAN METHOD FOR ANEMOMETRICIAN OF TURBULENT STREAMS G.N. Dolya, À.N. Katunin, Ê.V. Sadovy, S.I. Shmatkov , speckle – interferometrician, anemometrician, speckle – painting, lightreflecting coverage Vestnik KhNU ¹756 Pages. 118122
In this paper is researched the possibility of the use of the modified speckle – interferometrician method for anemometrician of turbulent streams. It is developed laser anemometer on the basis of the modified speckle – interferometrician method at the applications of lightreflecting coverage. Is dependence of increase of border frequency of signal’s spectrum at growth of speed of stream transversal to the ray. Dependence of spectrum of fluctuations the adopted signal on the degree of the brought distortions in at a different temperature of turbulent stream is explored
19. SELECTIVE excitation of the HIGHorder MODES IN THE waveguide quasioptical RESONATOR A.V. Volodenko, O.V. Gurin, A.V. Degtyarev, V.A. Maslov, V.A. Svich, A.N. Topkov waveguide quasioptical resonator, excitation of the highorder transverse modes, an amplitude filter, Fourier optics Vestnik KhNU ¹756 Pages. 123131
The method of the space Fourierfiltration for selective excitation of separated highorder transverse modes in the waveguide quasioptical resonator with a high discrimination degree of undesirable modes is proposed and realized. It is carried out numerical study of characteristics of some the lowest on loss transverse modes of the dielectric and metal resonators of the submillimeter laser from geometric sizes of reflectors and parameters of the space filter on the nonuniform mirror. Configurations of the amplitudestepped mirrors for shaping the highorder transverse modes in the laser resonators containing waveguides and open parts are proposed
20. Directed and polarization characteristics of the aperture of the circular waveguide with impedance flange N.N. Gorobets, V.M. Dakhov, I.V. Gorbach microwave, antennas, waveguides, polarization, pattern Vestnik KhNU ¹806 Pages. 37
The amplitude and polarization patterns of the radiator in the form of the aperture of circular waveguide with impedance flange, excited by the dominant wave, have been measured by the method of the indicator antenna with polarization plane rotation. It is shown that such radiators have an axialsymmetric pattern, a wide polarization pattern and a low level of side lobes.
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21. Features of the forest radio emissi L.M. Atroshenko, K.P. Gaikovich, N.N. Gorobets, V.N. Gorobets radio emission, a forest Vestnik KhNU ¹806 Pages. 813
Dielectric permeability of sheet plates of deciduous breeds of trees, dependence of the level of own wood signal from its projective covering, temperature distinctions, diffraction of radiowaves and their plural reflections in a crone of trees are investigated.
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22. THE H_{10} WAVE SCATTARING BY THE THIN VARIABLE RADIUS IMPEDANCE VIBRATOR IN A Nesterenko, E.Y. Belogurov, V.A. Katrich, V.I Kijko impedance vibrator, biconical vibrator, distributed surface impedance, rectangular waveguide, the method of induced electromotive forces Vestnik KhNU ¹806 Pages. 1417
The problem of the fundamental wave scattering by the thin variable radius impedance vibrator arbitrary situated in a rectangular waveguide was solved. Calculations were carried out and energetic characteristics of such structures were plotted
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23. RECTANGULAR WAVEGUIDE M.V. O.N. Sukhoruchko millimeter range, parametric amplifier, oscillatory system, band of the reinforcement, relative noise temperature Vestnik KhNU ¹806 Pages. 1821
Semiconductor twostage parametric amplifiers have been developed to be used in the input circuits of communication and navigation systems in the shortpart of millimeter wave band. In the 60 to 65 GHz range, the gain is no worse than 15 dB at 3 dB level in 1 to 1.6 GHz bandpass. The noise temperature is no higher than 500K when the quasioptical IMPATT oscillator is in using as the pumping generator.
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24. Way of transformation of the patterns of reception antennas A.A. Sorokin, A.F Sorokin, O.V. Sokolova, R.N. Zaluzhniy, N.N. Gorobets miñrowaves, antennas, pattern, Frenel zones Vestnik KhNU ¹806 Pages. 2932
the expedient of management by the shape of directional diagrams with the help of a fragmentation of Frenel zones is offered. Measuring the shape of a pattern diagram of the horn and spiral antennas are carried out. Peak allocations a builder of a field in shortrange, medial and longrange bands for different frequency range are received and analyzed. By results of experiments intensity, a corner, radius for longrange and shortrange bands is constructed 3D images.
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25. Resonance phenomena occurring as a thin refractive cylinder diffracts the hertzian wave Yu. I. Grebenyuk, N. G. Kokodiy, Khe Shi diffraction, thin cylinder, refractive index, scattering, absorption, weakening, resonance Vestnik KhNU ¹806 Pages. 3339
On the basis of solutions to the wave equation, the efficiency of dispersing, absorbing, and weakening the electromagnetic field that a thin cylinder with a large refractive index diffracts has been estimated. The transverse and longitudinal distribution of the electromagnetic field inside and outside of the cylinder has been calculated. The resonance is found to increase the intensity of both the electromagnetic wave field inside the cylinder and the scattered wave outside. Inside the cylinder at resonance, a wave propagating along its surface arises, and under some conditions, a wave propagating through the cylinder is also generated. As the refractive index is increased, the wave tracks the cylinder surface more closely, and its intensity is progressively enhanced.
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26. The influence of a dispersion and losses to the interaction of impulse signal with the model of the biological tissues O.N. Zheryobkina, O.V. Kazanskiy impulse signal, a biological tissue, time domain, flatlayer dielectric, dispersion Vestnik KhNU ¹806 Pages. 4043
In this paper the interaction of the impulse signal with biological tissues on an example of the flatlayer dielectric that models consecutive layers a skin, fat, muscle tissue is investigated. In this model, it is taken into account dispersion of the dielectric permeability and losses in a medium. The calculation program is received in result. It accounts the spacetime characteristics of the reflected and past signals for layers of the flatlayer dielectric with parameters of biological tissues. Influence of values of the dielectric permeability and angle of incidence on the characteristics of past and scattered signals also is considered.
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27. Thermo equilibrium and differential capacity of p^{+}n junction N.A. Shekhovtsov p^{+} n junction, distribution of potential Vestnik KhNU ¹806 Pages. 4853
The accurate distribution of field and potential in the region of abrupt p^{+} n junction under thermodynamic equilibrium is obtaned. The formula of p^{+} n junction width with any relation of mobile charge carrier magnitude and ion donors of nregion is obtained. The dependence of p^{+} n junction differential capacity upon out voltage, which does not need numerary methods is obtained. It was shown, that under direct and reverse switching of p^{+} n junction the dependence of capacity upon voltage is more complicated than for p n junction in the depletion mode.
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28. Thermo equilibrium state of p^{+}p junction N.A. Shekhovtsov p^{+}p junction, distribution of potential Vestnik KhNU ¹806 Pages. 5458
The thermo equilibrium state of p^{+}p junction with surface charge of p+region was investigated. The distribution of field and potential in the region of such junction is describing by Poisson's equation with unknown charge distribution on coordinate. The solution method of this equation allowing to obtain precise distribution of field and potential on coordinate was proposed. The formula for width of p^{+}p junction with any ratio of mobile charge carriers and charge of ionacceptors in pregion was obtained.
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29. Theory of the millimeter waves otype clinotron amplifier E.N. Odarenko, A.A. Shmat'ko nonlinear multidimensional theory, clinotron amplifier, electrons settling Vestnik KhNU ¹806 Pages. 7581
Nonresonant amplifier Otype system with inclined focusing field is considered. Theoretical investigation is carried out within the framework of the beamwave interaction multidimensional model. Input signal power, focusing field magnetic induction value and electrons settling on the electrodynamical system surface are taking into account
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30. Selection of the highorder modes in the waveguide resonator by means a phaseshifting mirror A.V. Volodenko, O.V. Gurin, A.V. Degtyarev, V.A. Maslov, V.A. Svich, A.N. Topkov waveguide quasioptical resonator, excitation of the highorder transverse modes, a phase filter, Fourier optics, selection Vestnik KhNU ¹806 Pages. 8791
The method of the space Fourierfiltration for selective excitation of separated highorder modes in the metal waveguide quasioptical resonator with a high discrimination degree of undesirable modes is realized. It is carried out numerical study of characteristics of some the lowest on loss transverse modes for the metal resonators of the submillimeter laser from resonator geometric sizes and parameters of the phase filter on the nonuniform mirror. Configurations of the phaseshifting mirrors for shaping of the highorder transverse modes in the laser resonators containing waveguides and open parts are proposed
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31. Application of the digital holographic interference microscope for investigation of thin films D.N. Tishko, T.V. Tishko, V.P.Titar, Yu. A. Zadneprovskiy, A.S. Kuprin, I.A.Zgoda digital holographic interference microscope, threedimensional images, vacuumarc method, thin AlN films Vestnik KhNU ¹806 Pages. 99102
For the first time the digital holographic interference microscope (DHIM) was used for investigation of thin films on transparent substrates. Threedimensional images of AlN of thin films, deposited on acryl substrates by the vacuumarc method have been obtained, their thicknesses have been measured. It has been shown that the DHIM can be successfully used for film surface quality checking, thickness and film damages parameters measurement.
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32. The exitation H_{p0} waveguide wave of the T–brunching with matching resonator V. N. Mizernik, A. A. Shmat'ko a branching of the waveguides, matching nouniformity, connection area, system of the linear algebraic equations Vestnik KhNU ¹834 Pages. 812
In strong electrodynamics statement the problem of excitation H_{p0} waveguide a wave by of the Tbranching with two types matching resonator is solved: otherworld and through passage. Results of calculation of amplitudefrequency characteristics of the module of factor of reflection for various parities between length of a wave and the geometrical sizes of structure are presented. Areas of value of parameters of the full coordination of wave guides are certain
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33. Subterahertz diffraction radiation on the BWO frequency harmonics in the parametrical tworegimes electron device E.N.Odarenko, A.A.Shmat’ko, P.V. Yudintcev diffraction radiation, SmithPurcell effect, subterahertz waves, beamwave interaction, nonlinear processes Vestnik KhNU ¹834 Pages. 1317
Diffraction radiation nonlinear theory that takes into account tworegimes interaction – selfconsistent regimes of the BWO and GDI on the BWO frequency harmonics is developed. The existence of the BWO generation regime on the first harmonic and parametric type diffraction radiation amplification regime on the BWO frequency harmonics is shown on the base of the selfconsistent equations set numerical solution. Ranges of the task parameters values that correspond to tworegimes interaction are defined
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34. Fields of the rectangular loop antanna in nearfield zone N.N. Gorobets, À.V. Trivaylo electromagnetic waves, radiation, nearfield zone, Hertz vector, traveling wave antenna, loop antenna Vestnik KhNU ¹834 Pages. 1824
On the basis of potential Hertz technique the expressions for calculating of all components of electromagnetic radiation fields of rectangular loop antenna, stimulated by the running wave of the current in Spherical and Cartesian coordinate systems unrestricted on the size of radiator and distance up to a point of observation have been derived. It has been shown that in a near field zone of radiation electromagnetic vectors in the Cartesian and Spherical coordinate systems have all 6 component. It has been shown that wave processes near by the examined radiators are distinguished by great gradients of amplitudes of the electromagnetic fields
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35. Radiolocation complex for extraatmospheric researches A.F. Sorokin, A.A. Sorokin, N.N. Gorobets, O.V. Sokolova radar, a, microwaves, space garbage Vestnik KhNU ¹834 Pages. 2530
The creation pulse radar is offered on the basis of radio engineering systems of the National centre of management and test of space means of Ukraine for the forecast asteroid of danger, cataloguing of space garbage, research of a solar crown, near a sun and interplanetary plasma, and also for radioastronomical researches of distant space. Is shown, that at use of largesized aerials to a ADU  1000 and P400 such radar at length of a wave ~ 30 cm at heights ~ 10^{5} ì finds out objects with the minimal sizes ~ 0,7 cm. On a disk of the Sun the spatial sanction ~ 10^{3} kms
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36. Earth profile plotting using pulse radar with scanning antenna array A. S. Kutsenko, Î. V. Kazansky, N. N. Kolchigin pulse radar, antenna array, radar image Vestnik KhNU ¹834 Pages. 3741
This paper is devoted to development of radar signal processing technique which allows one to reconstruct earth profile and reveal and identify manmadc objects which arc situated on underlaying surface. The technique of signal processing and image construction is based on measuring of directional characteristics of the scene being investigated. Modeling of radar activity has been performed; radar images of some simple scatterers have been obtained. Possibility of using the technique for scene profile reconstruction and revealing of manmade objects situated on it has been shown
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37. Structure and the contents of the hypertext databaseof problems of remote sounding of the ground from space L.M.Atroshenko, N.N.Gorobets, L.P.Safronova, S.A.Smirnov ðroblems of remote sensing, a database Vestnik KhNU ¹834 Pages. 4251
The principle of construction and filling of a hypertext database of problems of remote sensing of the Earth from Space including more 4000 problems RSE are described. The approach to an optimum choice of a sensor control is illustrated by the examples of use of active and passive sounding in a radiorange
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38. Farfield distance of waveguide radiators N.N. Gorobets, E.E. Ovsyannikova, A.V. Shishkova rectangular waveguide, microwaves, boundary of far zone, amplitude, phase radiation characteristics Vestnik KhNU ¹834 Pages. 6876
On the basis of Hertz potentials in Kirchhoff approximation the amplitude and phase radiation characteristics of openended rectangular waveguide excited by TE_{10} dominant mode are investigated at arbitrary distance from radiating aperture. The estimation criteria of far zone boundary for small (in comparison with the wavelength) waveguide radiators are presented. For such small radiators, the classic formula for calculation of farfield distance cannot be applied. Under suggested criteria the investigation of radiation characteristics are carried out. For waveguides with the sizes less then the wavelength in the waveguide, the boundaries of farfield distance are defined
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39. Electromagnetic waves focusing inside dielectric cylinder N. N. Gorobets, N. N. Stasjuk microwaves, dielectric cylinder, plane wave, focusing points Vestnik KhNU ¹834 Pages. 7784
Computation and analysis of electrical and magnetic field amplitudes at focusing points inside dissipative dielectric cylinder illuminated by plane linear polarized wave have been performed using the approximation of geometric optics. It was shown that in the focal region fields vary according to oscillating law and field longitudinal gradients the more cylinder diameter and dielectric permittivity, the large at that. Results of investigation allow to explain subthreshold (nonthermal) exposure of millimeter and submillimeter electromagnetic waves on human and other biological objects
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40. Near electromagnetic field of combined waveguideslot radiators in matter S.L. Berdnik, V.A. Katrich, M.V. Nesterenko, S.V. Pshenichnaya rectangular waveguide, waveguideslot radiator, material medium, hyperthermia, Galerkin's method Vestnik KhNU ¹834 Pages. 8588
The problem about the electromagnetic waves radiation into the homogeneous isotropic medium by the system of combined waveguideslot radiators in the broad wall of a rectangular waveguide has been solved in a rigorous selfconsistent formulation. The spatial distribution of the near field intensity in the halfinfinite material medium with the electrophysical parameters, corresponding to some man's tissues, has been investigated
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41. Directivity characteristics of rarefied antenna arrays N.N. Gorobets, A.A. Bulgakova electromagnetic waves, antennas, antenna array, directivity characteristics Vestnik KhNU ¹834 Pages. 8994
The radiation pattern, directive gain and scattering coefficient of equivedistance linear array were calculated and their dependencies on the number of radiators and distances between them were analyzed. It is shown that for every number of radiators the optimal antenna length of L≈0,9(N1), allowing to obtain the maximum of directive gain, occurs. For greater antenna length or increase in operating frequency, directive gain varies according to oscillating dependencies. The greater number of radiators occurs, the greater difference of maximums and minimums occurs. For small number of radiators (N≤8), the directivity characteristics of the array is higher, then for continuous antennas of the same electrical length. For N≥16, their characteristics coincide
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42. Features of radiation defect formation in kdp crystals under different kinds of irradiation A.N. Levchenko KDP single crystal, UV, ionizing irradiation, radiation centers, ESR Vestnik KhNU ¹834 Pages. 9599
Formation processes of different types of radiation paramagnetic centers in potassium dihydrogen phosphate (KDP) single crystals under ultraviolet (UV), gamma, electron, neutron and proton kinds of irradiation have been investigated with the help of electron spin resonance (ESR) method. The dose dependencies of the relative concentration of the impurity electron centers containing arsenic ions and holelike centers with the hole localized on the porbit of oxygen ion have been measured. The comparison of the effects of the different kinds of irradiation on the radiation paramagnetic defect formation processes has been carried out
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43. Pulse water insonification for laboratory research of electromagnetic wave propagation and dispersion in randomly inhomogeneous media in order to meet the conditions close to working ones V.B. Yuferov, A.N. Ponomarev, E.V. Mufel, A.N. Ozerov, I.V. Buravilov, V.N. Ishenko electromagnetic wave propagation, inhomogeneous medium, air bubbles in liquid, acoustic pulse pneumatic radiator Vestnik KhNU ¹834 Pages. 114119
The efficiency of pulse water insonification by pneumatic radiator is shown. Such radiator enables the formation above the water surface of hydrometcors and aerosols with a desired concentration. It is necessary for laboratory research of fluctuation phenomena of the electromagnetic wave propagation in randomly inhomogeneous media. The use of pneumatic radiator makes possible lo remove salt from the solution. This enables a certain degree of control over liquid permittivity
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44. Capacitancevoltage measurements in selectively doped ALGAAS/GAAS heterostructures N.B.Gorev, I.F. Kodzhespirova, E.N. Privalov gallium arsenide, selectively doped heterostructures, Schottky barrier, barrier capacitance, capacitance–voltage measurements Vestnik KhNU ¹853 Pages. 37
The dependence of the measured apparent capacitance of selectively doped AlGaAs/GaAs heterostructures on the amplitude of the measuring ac voltage is calculated numerically. An expression that gives the measured apparent capacitance as a function of the true capacitance and the above amplitude is derived. Using this expression and the results of the above numerical calculation, it is shown that capacitance–voltage characteristics of selectively doped AlGaAs/GaAs heterostructures, which feature steeply dropping regions, may be measured at moderately small amplitudes of the measuring ac voltage (of the order of 100 mV) at the expense of taking measurements at two different amplitudes
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45. Oscillation efficiency of TED diodes on the basis of nitrides E. D. Prokhorov, O. V. Botsula, A. N. Zabazhan AlN, GaN, InNdiodes, drift speed, oscillation efficiency Vestnik KhNU ¹853 Pages. 1521
Oscillation efficiency of intervalley transfer electrons diodes on the basis of nitrides (InN, GaN, AlN) is considered. Electric fields at peak oscillation efficiency are determined. The results have been compared to results for GaAs. The account of floatable potential in connections InGaN improves their power characteristics in comparison with power characteristics of these connections without taking into account floatable potential, maximal efficiency In_{0.8 }Ga _{0.2N and In0.5Ga0.5N diodes to compare to InN diodes on 30 % is higher (22 % to compare to 16,43 %) but at more high tensions of an electric field. The maximal oscillation efficiency is observed at higher electric fields than GaAs ( from 250 êV/sm for InN to 1000 kV/sm for AlN)}
46. Influence of apertureillumination law on nearfield characteristics of aperture antennas E.E. Ovsyannikova, A.V. Shishkova, N.N. Gorobets electromagnetic waves, reactive fields, aperture radiators, Kirchhoff technique, nearfield, farfield, amplitude distributions, phase characteristics, amplitude characteristics, reactive radiation power Vestnik KhNU ¹853 Pages. 2836
On the basis of Hertz potentials the investigation of nearfield reactive region of square aperture antennas with various aperture illumination laws has been carried out. The influence of the field amplitude distribution law in the aperture on the extension of this region has been studied. The calculation and analysis of amplitude, phase and power radiation characteristics, including reactive radiation power density, at the different planes in nearfield region have been carried out. The analysis of the criteria for estimation of nearfield reactive region boundary has been carried out
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47. Algorithms of the processing signal from the trellised receiver for measuring of the laser radiation characteristics Kokodiy N.G., Pak A.O. the laser, optical radiation, intensity, bolometer, direct task, reverse task Vestnik KhNU ¹853 Pages. 3744
In this paper has been considered the development of the device for the measurement of the intensity distribution in the beam of optical radiation. The algorithm of processing of a signal from the receiver of radiation is studied. The method of measurement of the intensity distribution of optical radiation by the bolometric grid is offered. The developed algorithms for processing a signal from the measuring converter and programs realizing them are checked up experimentally, their serviceability is confirmed. The comparative characteristic of algorithms based on the transformation of Fourier and transformation of Radon has shown an opportunity of their use in practice
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48. Arbitrary falling of wave on grate with by a screen and layer of environment A.I.Adonina, R.R. Naumov, A.I.Sljusarev grate, magnetodielectric, stream of power, method of RimanGilbert, resonator Vestnik KhNU ¹853 Pages. 4550
A decision of the set problem is conducted in the exact raising without imposition of limits on the parameters of structure, angles of incidence of wave, wavelength, parameters of environment. The variant of method of RimanGilbert was used for the case of the arbitrary falling of wave. A vectorial task is presented as a sum of two scalar tasks, proper subsystems into which the system of equalizations of Maxwell is divided for Å and Ífields. A numeral account, resulted in work as the graphs, confirms assumption about physical reasons of existence of anomalies, as resonances between active spectral accordions and own waves of the opened resonator which designs the explored structure
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49. Paramagnetic properties of ASO2" free radical in irradiated KDP single crystals A.N. Levchenko KDP single crystal, ionizing irradiation, free radicals, EPR, spin Hamiltonian Vestnik KhNU ¹853 Pages. 8487
The electron paramagnetic resonance (EPR) spectra of AsO_{2}^{2} free radical in potassium dihydrogen phosphate (KDP) single crystals irradiated with gamma rays and electrons have been investigated. The angular dependences of the spectra have been measured. The number of magnetically inequivalent sites for the AsO_{2}^{2} in the crystal lattice of KDP has been determined. The principal values of gfactor and hyperfine structure tensor have been calculated. It is found that the radical exhibits orthorhombic symmetry. The lagest component of hyperfine tensor is in the ab crystal plane. The molecular planes of the free radicals and the ab crystal plane are mutually perpenducular. The superhyperfine structure of the spectra indicates an existence of two protons near the paramagnetic center
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50. Experimental study of diffraction of electromagnetic waves on the lattice of elements of the complex profile Ivanchenko D.D., Maleev M. N. the difraction electromagnetic waves, chiral grates, frequencypoiarization property Vestnik KhNU ¹883 Pages. 5458
In given paper the diffraction of electromagnetic waves on volume grid is investigated experimentally. The grid consists of rectangular elements. Two planes of twodimensional periodic rectangular metallic string elements located on both dielectric surfac
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51. Construction of mode basis for open dielectric structures by integral equation method Legenkiy M.N., Butrym A.Yu. mode basis method, open waveguide, eigenmode Vestnik KhNU ¹883 Pages. 5053
A new method based on integral equation formulation is proposed for construction of mode basis in open dielectric waveguides. Decomposition of the spectrum in such structures into discrete (surface wave) and continuous (volume wave) part is analyzed. Disp
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52. Investigation of different temperature modes of auxilliary cathode work in magnetrons with cold secondaryemission cathode Avtomonov N.I., Vavriv D.M., Sosnytsky S.V. Magnetron, cathode, thermionic cathode, thermo emission, temperature Vestnik KhNU ¹883 Pages. 7382
A theoretical investigation of the emission current temperature dependence of the auxiliary cathode in magnetrons with cold secondaryemission cathodes is performed. Different methods of providing a spatialcharge limited emission from the auxiliary catho
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53. Determination of optimal parameters of a magnetocardiographic hexagonal measuring grid A.Yu. Kostiev, A.Yu. Butrym, S.N. Shulga magnetocardiography, gradiometer, current dipole, sensitivity, Hessian Vestnik KhNU ¹883 Pages. 2529
The article considers hexagonal grid of gradiometer sensors of magnetic field. The aim of the study is to determine the optimal parameters of the grid and the gradiometers in order to obtain maximum sensitivity of the measuring system in terms of location
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54. ABOUT SPURIOUS RESONANCES IN PROBLEMS OF DIFRACTION WAVES ON WAVEGUIDE DISCONTINUITY Mizernik V.N., Shmat'ko A.A. spurious resonances, a branching of the waveguides, mathching uniformity, connection area, system of the linear algebraicequations Vestnik KhNU ¹883 Pages. 6772
In work it is shown, that the problem of existence of spurious resonances in problems of diffraction waveguide waves on various discontinue in waveguides is connected with incorrect representation of matrix elements of system of the linear algebraic equat
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55. Microstrip structures with photonic band gap Fesenko V.I., Sukhoivanov I.A., Shul'ga S.N. photonics band gap, microstrip, filter Vestnik KhNU ¹883 Pages. 2024
In this paper, it is presented a twosided onedimensional photonic bandgap microstrip structure. The structure is obtained by etching a one periodic pattern of circles in the ground plane of a microstrip line and variation of the characteristic impedance
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56. The accumulation of gas in galactic objects Sorokin A.A., Sorokin A.F., Zaharova M., Sokolova O.V., Gorobets N.N. astrophysics, galactic objects, the accumulation of gas Vestnik KhNU ¹883 Pages. 37
The mechanism of the accumulation of gas in the galactic objects submerged in the largescale magnetic field is examined. As a consequence of the diamagnetism of the plasma subsystem of object, the stopper geometry of magnetic field with the radial electr
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57. Compromising emanations: overview and system analysis N.N. Gorobets, À.V. Trivaylo compromising emanations, nearfieldzone, electromagnetic, radiation, time domain Vestnik KhNU ¹883 Pages. 8388
The problem of compromising radiation of spurious signals in the near, intermediate and far zones of observation in time domain are considered. The Compromising emanation system analysis for finding spurious radiation is proposed. The goal of the given approach is to speed the development of technical protection of information. In approximation of the given current distribution it has been suggested a solution considering the influence of the nearfield effects upon directional characteristics of spurious signals radiation. The application of the new method allows us to investigate compromising of technical means in time and frequency domain.
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58. NonstationarY processes in the hybrid Otype beamwave system Odarenko E.N., Shmatko A.A. nonautonomous oscillatory system, locking, beats Vestnik KhNU ¹966 Pages. 2330
Nonstationary processes in the resonant beamwave system with premodulated electron beam are investigated in this work. Theoretical analysis is performed on the basis of the nonlinear multidimensional theory of the hybrid Otype electron devices. Basic regularities of the external signal power effect on the lock range width are described. Regimes of the oscillations synchronization, beats and squitter for different values of the oscillation system and external signal parameters are considered.
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59. Analysis of polarization characteristics of electromagnetic waves in nonorthogonal linearly polarized basis Gorobets N.N., Chekalin , Chekalina G.N. ålectromagnetic wave, electric field strength,timedistance curve, harmonic basis, the expansion of the harmonic, the polarization model
Vestnik KhNU ¹966 Pages. 5055
We solve the problem of determining the polarization characteristics – coefficient of ellipticity and orientation angle of the polarization ellipse and the direction of rotation of the polarization vectors of linearly polarized basis with arbitrary angle between the components of the electromagnetic wave. In the special case of orthogonal linearly polarized basis obtaind solutions coincide with the known one. An algorithm for constructing a model of elliptically polarized waves had been elaborated in this article as the totality of hyperbolic and elliptic circles.
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60. Own magnon polariton surface modes in the open passage resonator with gyromagnetic medium Mizernik V.N., Shmat'ko A.A. magnon polatiton oscillations, the ferrite resonator, a junction of waveguides, the through passage open resonator, wavegaide inhomogeneity, area of connection, system of the linear algebraic equations. Vestnik KhNU ¹966 Pages. 3136
The problem about owen modes of the open reentrant resonator partially filled is theoretically solved by gyrotropic ferrite medium and existence magnon polatiton surface (ÌPS) mods with tall concentration of a field on boundary line of the ferrite resonator is established. The every possible combined regimes of existence of superficial and volumetric fashions are analysed, dependences of their resonant frequencies on material parameters of medium and geometrical sizes of the resonator and a ferrite layer are certain.
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61. Polarization and energy characteristics Xslots in the waveguide with the complex load and the dielectric inserts Blinova N.K., Yatsuk N.N., Selyutin A.V. Õslots , ellipse coefficient, VSWR level , circular polarization. Vestnik KhNU ¹966 Pages. 7781
The Õslots in a rectangular waveguide with the end complex loading and dielectric inhomogeneity at the waveguide input are considered. Calculation and experimental results of power and polarization descriptions are carried out for such systems. The possibilities of polarization and power characteristics of Õslot control are investigated. The variation of dielectric inhomogeneity and complex end loading parametors allows to obtain the circular polarization, high radiation coefficient and low VSWR level
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62. Ðåøåò÷àòûé ïðèåìíèê äëÿ èçìåðåíèé õàðàêòåðèñòèê ëàçåðíîãî èçëó÷åíèÿ Lizogubenko S.V., Kokodiy N.G. scattering pattern, diameter of the particles, scattering, brightness of the light spot, beam intensity Vestnik KhNU ¹966 Pages. 912
Considered the method of defining the size of microparticles using a digitized image of the scattering. For research the optical method is used It consists that the researched substance, consisting of microparticles, is illuminated with the beam of optical radiation and then the scattering of the transmitted light is registered. After this, the digital processing of resulting scattering pattern is carried out and held the measurement of particle size in two different ways.
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63. New statistical methods of recognition and classification for automatic interpretation of remote observations Koltunov Y.A., Dumin O.M., Katrich V.A., Naumov R.R. methods of recognition and classification, blenderized models of the probabilistic distributing, teaching selection Vestnik KhNU ¹966 Pages. 3749
Mathematical models, computational algorithms, and also prospects of development and application of three new methods of recognition and classification (RÀC), namely, construction of distinctive characteristics of objects; classification on the basis of probabilistic teaching selection with optimization of method RAC; account of dynamics of features of recognized objects are presented in the article. Recognition and classification is an area of modern science that have a boundless list of applications in all spheres of human activity. From the list of applications the only one is selected in the present work, but the most actual one, that is the remote sensing of ground surface in radiofrequency band with the purpose of study and maintainance of natural resources of Earth.
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64. The geometrical approaches to the calculation of propagation of Gaussian beams in hollow metal waveguides in the terahertz range
Gurin O.V., Degtyarev A.V., Maslov V.A., Svich V.A., Senyuta V.S., Topkov A.N.
metal waveguide, Gaussian beam, terahertz range, geometrooptical approach, transmission coefficient
Vestnik KhNU ¹966 Pages. 38
A comparison of the results of calculations of the transmision for Gaussian beams in hollow circular metal waveguide using geometrooptical procedures by Frost and Crenn with the results of experiments in the
terahertz range is performed. The conditions of applicability of these methods to study the transmission characteristics of metallic waveguides of different lengths were found. It is shown that in this range the geometrooptical approach, proposed by Frost, provides satisfactory results only for short waveguides, the length of which corresponds to the condition of the near zone. The geometrooptical approach by Crenn is applicable to both short and for long waveguides.
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65. Influence of shading of the radiating aperture of singlereflector antenna by focal module on directional characteristics Gorobets N.N., Kiyko V.I. microwaves, reflector antennas, reflector shading, directional characteristics Vestnik KhNU ¹966 Pages. 97102
The effect of shading of the radiating aperture singlereflector parabolic antenna on radiation pattern, gain, wide beamwidth and sidelobe levels while changing the focal length of the relationship to the diameter of the reflector in the range of 0.5 to 1.5 takes place was theoretically investigated. Thus, it was shown that the effect of shading on all directional characteristics is the less than the longerfocused is the reflector. The minimum level of side lobes is in the case of shortfocused reflector
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66. Compromising emanations: overview and system analysis N.N. Gorobets, A.V. Trivaylo compromising emanations, nearfieldzone, electromagnetic, radiation, time domain Vestnik KhNU ¹883 Pages. 8388
The problem of compromising radiation of spurious signals in the near, intermediate and far zones of observation in time domain are considered. The Compromising emanation system analysis for finding spurious radiation is proposed. The goal of the given approach is to speed the development of technical protection of information. In approximation of the given current distribution it has been suggested a solution considering the influence of the nearfield effects upon directional characteristics of spurious signals radiation. The application of the new method allows us to investigate compromising of technical means in time and frequency domain.
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67. Impact of random variations of air hole diameters and random variations of the centers position of air holes on operation parameters of a solid core microstructured optical fiber A.I. Filipenko, A.N. Donskov finiteelement method, Gaussian distribution, inclusions diameter, total mode field power, angular positioning, microstructured optical fiber. Vestnik KhNU ¹983 Pages. 2932
We investigated the impact of random variations of air hole diameter and random variations of the centers position of air holes on operation parameters in the case of solid core microstructured optical fiber with a ring of air holes. The found results show that at any of considered defect types mode field will have two pronounced maximums. At practical use an investigated type of the MOF special angular positioning end faces of fibers is necessary. We also have shown that random variations of inclusions diameter can increase total mode field power. In our research we used finiteelement method.
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68. Light propagation characteristics of optical metal dielectric coaxial nanowaveguides with complex shapes O.N. Kozina, I.S. Nefedov, L.A. Melnikov plasmonic waveguides, coaxial, noble metals, numerical simulations, nanosize. Vestnik KhNU ¹983 Pages. 4853
The properties of new optical waveguides with nanosize crosssection made of noble metals and glasses are described. This waveguide supports propagation of modes with unusual propagation properties. For estimation of the field localization, losses, propagation length, velocity and others characteristics the numerical simulations by FEM method has been used. Coaxial waveguide with the annular and the elliptic central rods are considered. The comparatively low value of losses has explained.
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