1. On the field fluctuations in the diffraction pattern of focusing systems Ya.S. Shifrin fluctuations, amplitude, phase, focal plane Vestnik KhNU ¹756 Pages. 510
There are considered the amplitude and phase fluctuations of the field in the focal plane of the focusing system, when a was with the field fluctuations falls on it. Plots illustrating the distribution of dispersions of amplitude and phase of the field along coordinate axes in the focal plane are given. There are analyzed a general case when both the amplitude and phase fluctuation of the field are present in the incident wave, as well as cases when it is possible to be restricted by regard of only either the phase or the amplitude fluctuations of the field in the antenna aperture. It is shown that in the latter cases, for determination of dispersions of the phase and amplitude fluctuation of die field in the focal plane, it is possible to use the same pictures with tk corresponding replacement of curves and conclusions accompanying them.
2. On the directive gain of the selffocusing antenna Ya.S. Shifrin directive gain, selffocusing antenna, inhomogeneities, structure function Vestnik KhNU ¹756 Pages. 1117
The influence of the atmospheric inhomogeneities on the directive gain of the selffocusing antenna array (SFAA) at description of the atmosphere by the theory of the localisotropic turbulence is considered. There are analyzed two cases when a size of the SFAA subaperture is respectively more or less than the turbulence scale of the medium. It is shown mat the results of the meat directive gain estimation for the two cases are well conformed qualitatively with the analogous estimates obtained at the atmosphere description wife the help of the Gaussian correlation function of its refractivity index
3. 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
4. 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
5. 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.
6. 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
7. 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
8. 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
9. Onedipole inverse problem of magnetostatics for reconstruction of hearttorso electric activity from magnetocardiography measurements Bagatskaya O., Butrym A., Durneva Yu., Shulga S. Do not determinated Vestnik KhNU ¹756 Pages. 4750
Do not determinated
10. 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
11. 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
12.
Vestnik KhNU ¹756 Pages. 6164
13. 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
14. 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.
15. 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.
16. 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.
17. GAUSSIAN EXPANSIONS FOR RADIATION PATTERN OF AN OPENENDED LINE WITH IMPEDANCE BORDERS A.P. Udovenko aperture distribution, impedance border, orthogonal functions, diffraction integral, feed Vestnik KhNU ¹756 Pages. 8790
Nearfield and farfield twoparameter expansions in terms of LaguerreGaussian orthogonal basis functions are proposed, which take into account the effect of impedance feed borders. The expansions enable the feed characteristics on a base of lines with impedance borders to be calculated in wide frequency region. Radiation intensity distributions for the openended twolayer metalshielded dielectric waveguide in a nonresonance regions of surface impedance varying, relative errors of expansion truncations, comparison with experimental data are presented
18. 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
19. 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.
20. 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
21. 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.
22. 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 %)
23. 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.
24. 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
25. 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
26. CALCULATION and EXPERIMENTAL MEASUREMENT OF ANODE BLOCKS PARAMETERS OF MAGNETRONS K.M. Basrawi, G.I. Churyumov magnetron, anode block, Q quality factor, loaded Q factor, equivalent capacity, mode Vestnik KhNU ¹756 Pages. 132138
In this paper the outcomes of calculation and experimental measurements of cold parameters of the pulse and continuous X  range magnetrons are presented. The measuring and calculation techniques of equivalent capacities of the anode blocks of the magnetrons as well as Q quality factor, loaded Q factor and external Q factors of the resonant system for main N/2  mode and nearest N/2 1 and N/2 2 modes is given
27. On the primary mechanism for microwave therapeutic effects arising during gamma ray pathology B. G. Yemets electromagnetic microwaves, gamma rays, air bubbles, biologically active points Vestnik KhNU ¹756 Pages. 139143
The biologically active points (BAP) show an increase in size due to an increase in size of air bubbles at nearmembrane water layer in the biologically active point cells. The increase in the air bubble size is produced by sweeping the microwave frequency.
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