1. Millimeter wave rotational spectrum of the lower excited vibrational states of CH_{3}CF_{2}Cl O.I. Baskakov, V.V. Ilyushin, E.A. Alekseev molecule, rotational spectrum, interacting states, Hamiltonian, HCFC142b Vestnik KhNU ¹712 Pages. 39
The millimeter rotational spectrum of CH_{3}CF_{2}CI has been investigated. The rotational, centrifugal distortion and quadrupole coupling parameters have been determined for the vibrational states with energies below 600 cm^{1}. Parameters of the ground and 11^{1}, 17^{1}, 18^{1}, 17^{1}18^{1} and 11^{1} states have been obtained for both chlorine isotopic species. In addition, the 1111, 18^{2}, 10^{1}, 16^{1}, 9^{1} and 11^{1}18^{1} vibrational states have been studied for CH3CF235C1 molecule. It was found the interaction between 10^{1} and 16^{1}, and 9^{1} and 11^{1} 18^{1} couples. The transition frequencies calculated with the parameters obtained coincide with the measured ones within experimental uncertainties.
2. Multifunctional measuring platform for investigations parameters of metaldielectric structures V.A. Katrich, D.V. Mayboroda, S.A. Pogarsky, I.I. Saprykin automation complex, dielectric image guide, energetic characteristics Vestnik KhNU ¹712 Pages. 2124
The multifunctional automation measuring platform for ultra high frequencies parameters definition has been de signed. The basis of this complex is the controlled mechanical platform which allows to measure the field amplitudes along two orthogonal coordinates. The processing of measuring date realizes with the help of special software. The measuring of energetic characteristics of radiating module based on dielectric image guide has been carried out
3. Stochastic fields optimal processing in MPSAR A.V. Ksendzuk multiposition system, synthetic aperture, stochastic model, combined estimation Vestnik KhNU ¹712 Pages. 3032
This paper represents optimal combined estimation algorithm in multiposition synthetic aperture radar as signed for estimation of the parameters, contained in correlation function of the complex scattering coefficient; the most important special cases were presented
4. Longitudinal slot radiators cut in circular waveguide E.Y. Belogurov, V.A. Katrich, V.A. Lyaschenko circular waveguide, axial slot, electromagnetic waves, radiation, slot antennas Vestnik KhNU ¹712 Pages. 3741
Using method of magnetomotive forces investigations of behaviors of longitudinal slots that were cut in wall of the circular waveguide were carried out. Expressions of internal selfadmittance and transfer conductance were de rived. The possibility of creation of a tapered illumination that forms radiation pattern with low side lobes on long slot cut in circular waveguide was shown
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. Absorption of electromagnetic energy of dipole antenna of double layer dielectric sphere V.V. Radchenko wave absorption, double layer dielectric sphere, perfectly conducting spherical screen, radial dielectric dipole, dual series equations, method of analytical regularization Vestnik KhNU ¹712 Pages. 6266
Considered the problem of electromagnetic energy absorption by double layer sphere, which the simplified model of human head protected by the helmet with the dipole antenna. This investigation is interesting due to control of energy absorption in sensible parts of human head tissues. The problem is solved by method analytical regularization, which reduces the problem to the system of linear equations of Fredholm second kind which provides guaranteed convergence. Basic absorption characteristics are obtained and comparison of protection effectiveness for different sizes helmets are made
9. 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
10. 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
11. Electromagnetic wave detraction on a resistive unclosed cone V.A. Doroshenko, O.G. Litvinova diffraction, resistive, longitudinal slots, an integral transform, analytical solutions Vestnik KhNU ¹712 Pages. 9599
Problem of harmonic electromagnetic wave diffraction on a resistive cone with longitudinal slots is considered. The boundary problem solution uses the KontorovichLebedev integral transform and a semiinversion method. Analytical solutions are obtained for the cone with a lot of narrow slots and reactive impedance. Impedance and longitudinal slots effects on scattering field structure is studied
12. On experimental substantial of special relativity theory A.P. Volchenko competing hypotheses in the Lorentz transformations treatment, experiments in their testing Vestnik KhNU ¹712 Pages. 100110
Competing hypotheses in the Lorentz transformations treatment mentioned in works of H.Puankare have been considered. Experiments in such hypotheses testing have been commented upon. The conclusions are made about insufficient experimental substantiations of the competing hypotheses accepted in special relativity theory. Alternative definition of the Lorentz transformations and relativity mechanics equations have been specified.
13. 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
14. Same question of modeling of tunnel contact semiconductor structure O.V. Botsula, E.D. Prokhorov tunnel cathode, negative differential conductivity, contacts, current  voltage characteristics, cathode, anode Vestnik KhNU ¹712 Pages. 119122
Electronic processes are considered at course of a current through semiconductor structure with the tunnel cathode. The approach to modelling the structures including as a component tunnel geterojunction is offered. Static characteristics of structures to a basis geterojunction GaAs/AIGaAs received with application of the offered technique are resulted
15. The spectrum of current oscillations of Gunn diodes with the impact ionization in moving domains D.V. Pavlenko, E.D. Prokhorov Gunn diode, impact ionization, UHFnoise Vestnik KhNU ¹712 Pages. 123126
The results of the numerical simulation of the GaAs Gunn diode with electric field strengths, enough for development of the impact ionization in the moving highfield domains, are presented. The form of current oscillations and frequency spectrums is in good agreement with experimentally measured data. It is shown that the Gunn diode, operating under conditions of the impact ionization, may be used as a source of wide spectrum UHFnoise
16. 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
17. 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
18. 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.
19. 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
20. EXCITATION OF AN UNCLOSED CONE PLACED AT AN IMPEDANCE PLANE V.A. Doroshenko, O.G. Litvinova, A.V. Sova excitation, an impedance plane, cone, longitudinal slots, analytical solutions Vestnik KhNU ¹756 Pages. 4246
By using the approach that is based on applying the Kontorovichlebedev integral transforms method and a semiinversion method an excitation boundary problem for a cone with periodical longitudinal slots provided that cone placed at an impedance plane is investigated. It is showed that the problem under consideration is equivalent to solving a system of linear algebraic equations for Fourier coefficients of electromagnetic field components. Analytical solutions are obtained for a semi transparent cone and special plane impedance. Impedance plane effects are studied
21. INFLUENCE of ENVIRONMENT ON the FIELD, SCATTERING ON the LATTICE WITH LAYER, AT ANY FALL of the WAVE A.I. Adonina, V.B. Khokh lattice, environment, dielectric, a stream of capacity, method of RimanHilbert problem Vestnik KhNU ¹756 Pages. 5156
The decision of a task in view is carried out for Å and Í the fields appropriate to two subsystems on which the system of the equations of the Maxwell for environments is divided. Integrated characteristics of a field are determined from the decision of systems of the linear algebraic equations received by a method of method of RimanHilbert problem , for a case when the smallest parameter decreases in inverse proportion to a square n>infinity. Programs (fort) with construction of diagrams are made. The analysis of the diagrams in part given in work, allows to establish influence of parameters of structure and corners of fall of a wave on anomalies in an absentminded field for each concrete case
22. THE INFLUENCE OF MUTUAL COUPLING ON RADIATION CHARACTERISTICS OF ANTENNA ARRAY FOR VIDEOPULSE EXCITATION O.V. Kazansky mutual coupling, finite TSA arrays, VanAtta array, videopulse Vestnik KhNU ¹756 Pages. 5760
In paper antenna array from finite number of the elements, which are exited by a videopulse is observed. The model for calculation of radiated fields of antenna taking consideration of mutual coupling between elements is proposed. A directed characteristics analysis of the retrodirected systems, VanAtta array, from finite number of elements and wave form of radiated and reradiated signals are investigated in case of excitation by a videopulse. Recommendations to decrease mutual coupling is proposed. The case of useful influence on characteristics of a radiated pulse signal is considered
23. SCATTERING AMLITUDE ERROR ESTIMATION FOR MOMENT'S METHOD IN L_{2} FOR 2D SCREENS A.G. Tyzhnenko, Y.V. Ryeznik testing, reference solution, moment's method, 2D screens Vestnik KhNU ¹756 Pages. 6570
The scattering amplitude error estimation problem for practically used MoM solutions in L_{2} function space for scattering from 2D screens is addressed. To this end, a rigorous Galerkin solution in L_{2} to logarithmically singular and hypersingular EFIE is used as a reference solution for scattering amplitude error estimation by benchmarking. This one requires substantially lower computational efforts than using of the same MoM algorithm but with very high mesh density as a reference solution. To many, the approach helps to avoid unpredictable errors due to the illconditioning connected with high mesh density for any MoM solution to the EFIE in L_{2}. Using the approach, the asymptotic decay rate of scattering amplitude error is investigated for some MoM algorithms widely used in practice
24. DESTRUCTION OF PULSE TRAINS IN WEAKLY NONLINEAR OSCILLATOR D.D. Vavriv chaos, dynamical systems, train pulses, quasi linear oscillator Vestnik KhNU ¹756 Pages. 7178
A study has been carried out on the transition of train of pulses via a weakly nonlinear oscillator. Conditions of destruction of such trains as a result of appearance of chaotic instabilities have been analyzed. Analytically conditions of the appearance of chaotic instabilities have been determined by using the method of secondary averaging.
25. The analytical method for a periodical sequence of the alternate grates of dielectric bars investigate V.B. Kazanskiy thick grate of dielectric bars, anisotropic layer, periodic structure, propagation constant, scattering coefficients Vestnik KhNU ¹756 Pages. 7982
The electromagnetic properties of a finite periodic sequence of the thick grates of dielectric bars are investigated. The grates are identified with the homogeneous anisotropic layer of an appropriate thickness, in order to generalize, the layers which anisotropic properties of both permittivity and permeability are employed. The sequence scattering .coefficients are determined in analytical form using the circuit theory and the matrix functions techniques. Physical analysis of the frequency, angle and interference dependencies of the scattered field amplitude is carried out.
26. The Gaussian beam scattering on the bounded sequence of alternate grates of dielectric bars V.B. Kazanskiy, V.R. Tuz, D.V. Yudintsev Gaussian beam, thick grate of dielectric bars, anisotropic layer, periodic structure Vestnik KhNU ¹756 Pages. 8386
The Gaussian beam scattering on bounded periodical sequence of thick grates of dielectric bars are investigated. Identification of discrete structure with appropriate thickness homogeneous anisotropic layer was carried out for define sequence basic element transmission matrix. The sequence scattering coefficients were written down via Mougin polynomials. The effects of form distortion, beam splitting into several beams, side shift of beam axe were shown. Their correlation with scattering coefficients phase and module angle dependence of separate grates was established.
27. Electrons in superlattice with continuous conduction band edge M.V. Klymenko, S.I. Petrov superlattice, effective mass, Bragg effect, carriers confinement Vestnik KhNU ¹756 Pages. 9196
In this paper, the energy spectrum of electrons is investigated for the superlattice with continuous conduction band edge. The comparison with conventional superlattice has been realized. It is shown that in the investigated structure the energy spectrum has band structure which is caused by periodic positiondependent effectivemass. Moreover, positiondependent effectivemass leads to additional effective potential. The Bragg reflection for electrons in ballistic limit can be observed in the superlattice with continuous conduction band edge. It can be used for effective Bragg confinement of carriers. For the first time the investigations have been carried out for the case when the superlattice without band offsets has finite number of periods. The obtained results shed light on new applications of the investigated structures for THz frequency range
28. Al_{0,3}Ga_{0,7}As/GaAs cathode transfer electron diode's efficiency O.V. Botsula Prokhorov E.D, A.V. Dydchenko doping, cathode contact, tunnelling, negative differential conductivity, oscillation efficiency Vestnik KhNU ¹756 Pages. 97100
The results of analyse efficiency of GaAs/ Al0,3Ga0,7As/GaAs GaAs/ Al0,3Ga0,7As/GaAs / GaAs cathode transfer electron diode are present. The space charge model are used. There are two region of negative differential conductivity of current  voltage characteristic are shown . The condition lead to oscillation due both region and oscillation efficiency have been determined.
29. Wide range mmwave GAAS oscillator with electronic frequency gliding A.V. Dyadchenko, E.D. Prokhorov oscillators, electronic frequency gliding, oscillating efficiency Vestnik KhNU ¹756 Pages. 101104
The wide range mm  wave GaAs oscillators with electronic frequency gliding are considered. The oscillator is operated up 60 to 70 GHz on second harmonic. The electronic gliding is perfomed to obtaine of 9 GHz change of frequency
30. AlN/AlxGa1_{x}N resonance tunnell diodes D.V. Pavlenko, E.D. Prokhorov nitrides, quantum well, NDC, oscillation efficiency. Vestnik KhNU ¹756 Pages. 105108
Double and threefold compounds of nitrides AIN/AIGaN resonance tunnel diodes using height of barriers are concedered. In the quantum well of diodes there are a plenty energy levels. Electron energy levels in quantum well with variable structure of interconnections AlGaN are determined. The current  voltage characteristics of resonance  tunnel diodes with number of levels in a quantum wall up to five has been calculated. The RTD can have up to five sites with negative differential conductance are demonstrated. The possible RTD oscillation efficiency on all sites of negative differential conductivity at difference barriers and quantum well's material are determined.
31. Influence of impact ionization on efficiency of rscadiodes operation on basis of InN, GaN, AIN D.V. Pavlenko, E.D. Prokhorov nitrides, RSCA oscillators, oscillating efficiency, drift velocity Vestnik KhNU ¹756 Pages. 109112
The impact ionisation in RSCA diodes is considered on the basis of nitrides InN, GaN, AIN. Possible overvoltage on diodes and possible efficiency of generation are analyzed. It is shown, that at development of a impact ionisation in RSCA diodes in correspondence with the diffusion theory the considered materials are perspective for RSCA diodes for operation in centimeter and millimeter wavebands (voltage over threshold 3 ... 5 at efficiency up to 11 ... 13 %)
32. 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.
33. 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
34. 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
35. 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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36. 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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37. 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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38. 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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39. 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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40. CALCULATION AND MEASURING OF IMPEDANCE OF IMPATTDIODE IN MILLIMETR WAVE A.V. Arkhipov, V.T. Plaksiy, I.K. Kuzmichev, E.D. Prokhorov, A.V. Dydchenko, D.P. Chuechkov millimeter wave range, impedance, IMPATT diode, conductance, susceptance Vestnik KhNU ¹806 Pages. 5964
The calculated and experimental results of the impedance of the impact avalanche transittime (IMPATT) diode for the 8 millimeter wavelength range have been presented. The dependences of the IMPATT diode impedance as a function of the normalized amplitude î Ã the fundamental current harmonic of the pn junction and frequency have been calculated and measured. The apparatus and measuring method of the conductance and susceptance of the IMPATT diode has been developed
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41. HARMONIC GENERATION BY IMPACT IONIZATION IN CaN LSA DIOD O.V. Botsula, D.V. Pavlenko, E.D. Prokhorov LSA diodes, generation efficiency, nitrides, drift velocity, harmonics Vestnik KhNU ¹806 Pages. 6569
In this work an impact ionization in LSA diodes on basis of GaN is considered. Analytical calculation of typical times of passing of a number of the physical processes determining properties of the oscillator, and limitings imposed by them on frequency properties of the diode is submitted. It is shown, that at developing impact ionization in LSA diodes, according to the diffusive theory, the considered compounds are perspective for manufacturing LSA diodes for work in sm and mm  ranges (electrical pressure over threshold 3 … 5 times, at an efficiency up to 11 … 13 %). The results of calculation of efficiency of oscillators on basis of GaN LSA diodes are given at their work in modes on a base frequency and at a harmonic generation.
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42. Identification and localization of radar impulses buried in noise A. G. Tyzhnenko, Y. V. Ryeznik radar, pulse, identification, localization, low SNR Vestnik KhNU ¹806 Pages. 7074
Statistical method identification and localization of radar impulses buried in noise is addressed. To this end, the correlation coefficient between carrier samples measured in the extremal points and analogous set of points of received signal is proposed to implement. Such measurements for receiving signal need to be done at least by one tenth of the half period of the carrier. Because of very simple algorithm proposed, such measurements do not lead to heavy computational burden. To decrease identification and localization errors for given signal to noise ratio (SNR) one needs to increase the number of measurements points, and hence, the pulse width. To prevent this issue, one can increase the carrier frequency. In general, the method accuracy increases with the carrier frequency. The method proposed permits theoretically to identify with fidelity impulses buried in noise for SNR lower than 30 dB.
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43. 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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44. QUEST AND CREATION OF NOVEL ACTIVE MEDIA FOR DYE LASERS IN IRE NAS OF UKRAINE V.V. Maslov laser dye, molecular structure, spectrum, fluorescence, quantum yield, lasing efficiency, photostability Vestnik KhNU ¹806 Pages. 9298
Numerous studies of novel active media for dye lasers fulfilled in IRE NAS of Ukraine are generalized in present review. Peculiarities of spectral, fluorescence and lasing characteristics of some laser dye classes for visible region of the spectrum have been analysed. A special attention is focused upon effects of structure of the dye molecule and its solvent environment on these characteristics. The outlook of development for dyedoped active media has been discussed
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45. 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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46. 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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47. 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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48. 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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49. 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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50. 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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51. Features of the calculation of Focktype integrals V.I. Vyunnik, A.A, Zvyagintsev Focktype integrals, numerical integration, error estimate Vestnik KhNU ¹834 Pages. 5262
Calculation of Focktype integrals, used at the solutions of the diffraction problems on convex bodies is considered. The method of calculation of this integrals is described, and the estimation of their convergence is given. Range of values of the complex parameter, describing a surface impedance, for which the given method is applicable is determined. The estimation of the error of calculation is carried out
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52. Radiation of short pulses from the open end of waveguide O.M. Dumin, O.O. Dumina, V.O. Katrich, Zheng Yu transient field, modal basis method, evolutionary equations, impulse field irradiation Vestnik KhNU ¹834 Pages. 6367
The problem of transient electromagnetic field radiation from the open end of waveguide is solved in time domain by the analytical and direct numeral methods. The problem of impulse signal propagation in regular waveguide is converted to the finding of transient wave propagation operator by modal basis method. The application of the operator for the obtaining of time form of signal both for the time change in positive and in the negative direction permits to seek an arbitrary time dependence of field amplitude in any point of waveguide taking into account distortions due to wave dispersion. The correction of diffraction distortions of time form of wave and forming the short probe impulse on the waveguide aperture by the excitation of waveguide in the given crosssection by field with the previously calculated time dependence are considered . Numerical simulation of short impulse irradiation of layered medium with losses is carried out
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53. 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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54. 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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55. Frequency multiplication at impact ionization in GaNdiodes Î. V. Botsula, D. V. Pavlenko, E. D. Prokhorov the GaN diode, coefficient conversion transducing, drift velocity, harmonics Vestnik KhNU ¹834 Pages. 100103
The frequency multiplication at impact ionization in transfer electron GaN diodes nave been considered. The coefficient conversion transducing increase if impact ionization in GaN diodes takes place have been demonstrated. For example, coefficient conversion transducing in second harmonic arrive at 40 %.
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56. Cathode static domen in transfer electron devise Î. V. Botsula, D.V. Pavlenko, E.D. Prokhorov static domen, velocity – field characteristic, electric field strange Vestnik KhNU ¹834 Pages. 104107
The diode in which static cathode domen and under certain conditions impact ionization takes place has being considered. Transit time effect and noise oscillations takes place under impact ionization. The volatge to be lead to electric field strange abow 200 êÂ/sm (for gomogenues velosity – field characteristic in ower dides) have been derermened
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57. Potentially unbreacable ciphering on a hybrid physicalmathematical level A. G. Tyzhnenko, E. V. Ryeznik bit, stochastic signals, safe communication, hard drive protection Vestnik KhNU ¹834 Pages. 108113
A new kind of ciphering based on stochastic representation of bits as series of samples is addressed. Stochastic comparison is used for bit identification. Security level is increased by adding noise samples to signal samples and mixing signal samples with noise samples within one signal packet. The signal packet length and distribution features of signal samples among noise samples in signal packets are unique for given communication line, as well as stochastic representation of bits (0s and 1s). Using of noise in signal packets leads to enormous large computation in decrypting process which is unrealistically to do regardless what computer system is used. More to the point, the unique features of communication line mentioned above can be changed for each message that prevents information leakage in the case of stealing these ones in any previous period. Impossibility of decrypting by any reasonable time period of any message eavesdropped by a cryptanalyst guarantees the confidence of information which has permanent importance
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58. 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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59. Potential of a spherical segment which is placed within a spherical layer with circular aperture. V.A. Rezunenko electrostatics, spherical segment, layer, Fredholm integral equation Vestnik KhNU ¹834 Pages. 120126
The rigorous solution of an axially symmetrical electrostatics problem is obtained. The potential of an ideal spherical segment, which is placed within a spherical layer with circular aperture, is analyzed. We use the methods of regularization, separation and inversion of summarized equations, the method of residues in singular points of analytical functions, the methods of contour integrals and integral transformations. Fredholm integral equation of the second kind with a compact operator in Hilbert space L_{2} is obtained. The comparison with known results and limit variants is given. The effectiveness of the constructed algorithm is confirmed. Some generalizations of the problems are considered
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60. Global Sensitivity analysis of the dipole matrix element according to variation of parameters of the indium surface segregation in ingan/gan quantum well M.V. Klymenko indium surface segregation, semiconductor nitrides, piezoelectric polarization, dipole matrix element, global sensitivity analysis Vestnik KhNU ¹853 Pages. 814
In this paper, influence of the indium surface segregation on dipole matrix element for InGaN/GaN heterostructure is under investigation. The global sensitivity analysis has been applied for quantitative estimation of the indium surface segregation effect at each interface of the quantum well. Together with the indium surface segregation, the piezoelectric effects are considered. It has been shown that joint action of the piezoelectric fields and the indium surface segregation leads to changes in the selection rules for optical transitions. Results give the method to apply the optical spectroscopy for observation of the indium surface segregation
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61. 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)}
62. 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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63. Single cone with longitudinal slots excitation by an impulse point source A.V. Artyukh, y.A. Doroshenko, Y.D. Shimuk impulse source, cone, longitudinal slots, analytical solution, numerical solution Vestnik KhNU ¹853 Pages. 5156
In this work the excitation of a semiinfinite perfectly conducting cone with periodic longitudinal slots by an impulse radial source problem is investigated. The solution of the wellposed initialboundary problem is found using an analytically numerical method based upon Green function and MelerFock integral transforms applying. It is shown that the original electrodynamic problem is equivalent to the one of the Fredholm linear algebraic equations system of the second kind solving. Analytical view of the solution is derived and the graphs illustrating the field dependence on the aperture angle and angle slot width are presented
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64. Diffraction of the plane acoustic wave on the hard spherical segment, shielding of the ball Rezunenko V.A. acoustics, spherical segment, shielding ball, resonance frequencies, algebraic equations of the second kind Vestnik KhNU ¹853 Pages. 5763
A solution of the axisymmetrical problem of acoustics in strict formulation is built. The acoustic potential of the velocity of the plane wave, diffracted on the hard spherical circular segment, shielding of the ball is analyzed. The method of regularization of the paired summarized equations is used. The method of the integral transformations is applied. The principal part of the summarized equations is isolated and inverted. The effectively solvable system of the linear algebraic equations of the second kind with the compact operator in the Hilbert space l_{2} is obtained. Comparison with the known results and limited cases of the problem is given. The effectiveness of the constructed algorithm is confirmed. Some resonance frequencies and generalization of the task are examined
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65. Asymptotic method of the solution of diffraction problem on the convex impedance cylinder, excited by the string of the electric current V.I. Vyunnik, A.A, Zvyagintsev diffraction, asymptotic method, interpolation, convex impedance cilinder Vestnik KhNU ¹853 Pages. 6470
In the work considered the problem of diffraction electromagnetic waves on the convex impedance cylinder exited by string of the electric current, located near to its surface. The method asymptotic theories of the diffraction, offered by Fok is used. Are received asymptotic interpolation formulas for calculation radar cross section of the system string the current  cylinder, for a case of circular and elliptic impedance cylinders. The received formulas are suitable for calculations both in shadow and in lighted areas. It is shown, that these formulas can be distributed on a case of the any convex impedance cylinder with variable curvature
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66. Algorithm of a pulse signals delay definition, based on a Hilbert's transformation D.O. Batrakov, D.V.Golovin, S.V. Grekov, A.G. Batrakova* pulse signals, definition of a delay of signals, Hilbert's transformation, planelayered media, thickness measurements Vestnik KhNU ¹853 Pages. 7176
In the present paper the algorithm of processing of the pulse signals reflected from planelayered media is offered. It is supposed, that an effective thickness of layers less than spatial size of an impulse. This feature of a problem complicates use earlier proposed methods of signals time delay evaluating. Therefore in paper the theoretical analysis of possibilities of various approaches for processing of signals is carried out and the algorithm and the corresponding software for definition not only a time delay, but also physical and geometrical characteristics of investigated objects are offered. Results of numerical modelling and experimental researches for the purpose of definition of sensitivity and resolution of a method, and also possibility of its practical use are given
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67. Theoretical investigation of photonic crystals by means of analysis of photonic density of states maps I.V. Guryev photonic crystal, photonic density of states, transmittance spectrum, plane wave expansion method, finite differences method Vestnik KhNU ¹853 Pages. 7783
In the work, there have been computed the photonic density of states maps of the 2D photonic crystal by means of plane waves expansion method by the analogy with photonic band gap maps. The photonic density of states maps allows precise determination of the parameters of photonic crystals during the design process of the photonic crystalbased device. Moreover, there have been carried out the comparison with analogous characteristics obtained by the finite differences time domain method. Comparison results indicate the similarity of results obtained by two methods, however, the computation of photonic density of states maps requires much less time at the same computation precision. Moreover, in the work there have been carried out the comparison between the efficiencies of the photonic density of sates maps and the photonic band gap maps analysis methods
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68. HF ionosonde signal focusing by traveling ionospheric disturbances Yu. B. Milovanov, V. F. Pushin, O. F. Tyrnov traveling ionospheric disturbances, signal amplitude variations, Doppler frequency shift, focusing factor, computer simulation Vestnik KhNU ¹853 Pages. 8894
HF signal focusing due to linear and nonlinear wave disturbances occurring during monostatic ionospheric sounding is discussed. A technique is developed for estimating signal amplitude variation due to focusing based on beating amplitude measurements during significant Doppler frequency shift events. The intercomparison of measured and modeled variations in beating amplitudes, the focusing index, and Doppler frequency shift show a qualitative agreement. The simultaneous analysis of variations in the beating amplitude and the Doppler frequency shift makes the interpretation of measurements more definite, e.g., it permits the isolation of large scale disturbances traveling at approximately 1 km/s
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69. Analysis of impulse fields reflected from layered medium with losses using artificial neural network Shyrokorad D. V., Dumin O.M., Dumina O.O., Katrich V.O. time domain, artificial neural network, impulse fields, layered medium Vestnik KhNU ¹883 Pages. 3540
The problem of determination of thickness a layer of layered medium by impulse irradiation is solved. The impulse fields reflected from the layered medium with electrical characteristics close to the characteristics of human skin are analyzed by artificia
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70. FREQUENCY MULTIPLICATION AT IMPUCT IONIZATION IN TRASFER ELECTRON DIODES ON BASIS AlN, InN E. D. Prokhorov, O.V. Botsula, I. A. Grishchenko AlN, GaN, InN diodes, frequency transformation factor , drift velocity, harmonics. Vestnik KhNU ¹883 Pages. 3034
Multiplication of frequency at impact ionization in intervalley transfer electron diodes on basis InN, AlN is considered. The current – voltage characteristics of intervalley transfer electron diodes have negative conductivity region and strong increasing
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71. 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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72. Quantum efficiency spectral chracteristics of resonant cavity photodector taking into account thermal gradient S.V. Gryshchenko, Resonant cavity photodetector, refractive index, temperature shift Vestnik KhNU ¹883 Pages. 811
In paper a theoretical analysis of quantum efficiency of resonance InGaAs/GaAs Pin photodetector (RCE PD) is presented. A mathematical model plugs in itself the transfer matrix method, heat conductivity calculation and dependence of index of refraction
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73. 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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74. Ballistic electronic transport in continuousband superlattice under applied electrostatic field S.I.Petrov, Klymenko M. V., Shulika O. V. ballistic transport, superlattice, effective potential Vestnik KhNU ¹883 Pages. 1219
We address in this work ballistic transport of electrons in semiconductor continuousband superlattice under applied electrostatic field. Combined influence of the effective mass periodically varied in space and external electrostatic field on the electro
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75. 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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76. 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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77. 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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78. On nonunique definitions the lorentz transformation Volchenko A.P. rate of neutrinos, the speed of light, the phenomenon of the aberration of light, the Lorentz transformations Vestnik KhNU ¹966 Pages. 8289
IThe article shows that the Lorentz transformations (LT) if they define as an object of mathematics, allow for different geometric and as a consequence, various kinematic interpretation. In this regard, introduced by the geometric and kinematic interpretation of the corresponding SPs that do not use the postulate of special relativity, whereby the speed of light is the limit for the velocities of the bodies that have mass. The specificity of this definition is illustrated by their use of in the description of the phenomenon of aberration of light.
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79. 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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80. 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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81. Impedance characteristics of planar diodes with tunnel boundaries based on GaAs Prokhorov E.D., Botsula O.V., Klimenko O.A. : negative differential conductivity, tunnel boundary, a diode, the tunneling. Vestnik KhNU ¹966 Pages. 1318
The impedance characteristics of the diodes are consider, which negative differential conductivity (NDC) is arise under certain voltage, due to tunneling of electrons through the side faces of the diode, which can be used for generation, amplification and multiplication. Depending on the active and reactive components of impedance are determined of the diode with the tunnel boundaries for the real parameters of the diodes. It is shown that the limiting frequency of the diode NDC is in the terahertz range and depends on its parameters.
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82. Determena Frequency properties of intervalley electron transfer in AlN V. T. Plaksiy, À.V.Arhipov, À. S. Tischenko, Ò. ². Kamishanova, E.D. Prokhorov, À.V.Dyadchenko, D. P.Chueshkov perfect crystal, zone overcrystallization, temperature gradient Vestnik KhNU ¹966 Pages. 1922
The problem of growing of perfect bismuthantimony monocrystals having of a uniform distribution of Sb atoms through the crystal by help floatingzone refining method is considered. The expression for temperature gradient in melt and temperature distribution for any melt point have been obtained.
The monocrystals growing maximal velocity have been estimated. The growing velocity must be lower then 1 mm per hour was showed. It is velocity not lead to concentration overcooling and arising inhomogeneous dendrite structure. For solution with certain composition ( at = const) overcooling may be eliminated by either increasing of temperature gradient in liquid faze or decreasing growing velocity are showed.
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83. 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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84. Optical synthesized apertures in holographic television systems Titar V.P. Holographic television, synthesizing holograms, linear antennas, CCDmatrices, color holographic television systems Vestnik KhNU ¹966 Pages. 5667
The analysis of the modern state of investigations concerning the creation of holographic television has been carried out. The new methods of hologram formation on photo electronic devices are proposed. The scheme of the holographic television system realizing the method of synthesizing optical holograms is presented. The possibility of synthesizing threedimensional holograms of volume objects on photo electron devices is shown. The method and principles of constructing colour holographic television system is proposed.
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85. 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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86. Signal scattering on the meteor trail Kharchenko H.V. signal scattering, meteor trail, diffraction oscillations, electron density, plasma collective interaction, impulse response. Vestnik KhNU ¹966 Pages. 9096
A generalized model of the radiosignal scattering on the meteor trail is proposed. The model allows to take into account the process of formation and development of the meteor trail, and to calculate the scattered signal power change without sharing the meteor trails on underdense and overdense. As input parameters of the model used the physical parameters of the meteoroid  the mass and velocity, which determine the ionization of the plasma formation, as well as the location and orientation of the meteor trail. In the derivation of the analytical relations taken into account the presence of the plasma sheath surrounding the 'metal cylinder' and the collective interactions in the plasma. In the paper shown that the results of calculations are in good agreement with observations.
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87. 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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88. 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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89. 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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90. The xecl laser with the adjustable shape and duration of generation pulse S.S. Anufrik, A.P. Volodenkov, K.F. Znosko LC contour, XeCl laser, excitation system, generation energy, pulse duration. Vestnik KhNU ¹983 Pages. 310
The generation parameters of LCcontour excitation system are studied for electrodischarge excimer XeCl laser using a Ne–Xe–HCl mixture. A computation model is developed for finding the generation parameters. It has allowed us to calculate current, voltage and generation power oscillograms for all parameters of the electrical excitation system. The program of XeCllaser modeling enables to calculate an electrons, atom and molecule concentrations, specific energy deposition in active medium also. By means of program Bolsig + calculation of rate coefficients of reactions with participation of electrons is executed. It is shown that generation of short radiation pulses (20 ns) and relatively long pulses (60 ns) is possible due to changing of LC contour parameters. Energy of generation reaches a maximum at use of small values of peaking capacity, which are significantly smaller then value of storage capacity.
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