Begell House Inc.
Telecommunications and Radio Engineering
TRE
0040-2508
57
5
2002
Electromagnetic Wave Diffraction by a Grating of Gyrotropic Circular Cylinders
6
10.1615/TelecomRadEng.v57.i5.10
A. V.
Bezougly
Kharkov National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkov, 61166, Ukraine
V. V.
Khoroshun
Kharkov National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkov, 61166, Ukraine
A rigorously formulated problem is analyzed of an E(H) -polarized wave obliquely incident on a planar grating of ferrite cylinders of circular cross-section, magnetized to saturation by an external homogeneous field oriented along the cylinders. Analytical expressions are derived for the reflection and transmission coefficients within the long-wave approximation. Numerical results are given, concerning the coefficient dependences upon the magnetizing field strength.
Irregular Scattering of Electromagnetic Signals in a Regular Time-Varying Medium
5
10.1615/TelecomRadEng.v57.i5.20
K. M.
Yemelyanov
V. Karazin National University of Kharkov, 4, Svoboda Sq., Kharkov, 61077
A. G.
Nerukh
Kharkov National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkov, 61166
Discussed in the paper is the transformation of electromagnetic signals in a medium with time-variation of the dielectric constant and conductivity that can be modeled by a finite sequence of periodic rectangular pulses. As is shown, with certain relations between the medium parameters and characteristics of the signal the behavior of secondary waves may become irregular. The irregularity parameter is analyzed numerically.
Wave Packet Scattering by an Anisotropic Gyromagnetic Layer
5
10.1615/TelecomRadEng.v57.i5.30
D. N.
Goryushko
V. Karazin National University of Kharkov, 4, Svoboda Sq., Kharkov, 61077, Ukraine
A. A.
Shmat'ko
V. Karazin National University of Kharkiv, 4 Svobody Sq., Kharkiv 61022, Ukraine
The problem of wave beam scattering by an anisotropic ferrite layer is solved employing the spectral method. The object is a 2D beam obeying the Gaussian distribution in the cross section plane and having no variations in the direction perpendicular to the plane of incidence. Expressions for the reflection coefficient of the plane wave from the layer with a tensorial magnetic permeability have been obtained. Properties of the spatial distribution of the reflected field are analyzed for various angles of beam incidence.
Mutual Wave Conversion under Resonant Scattering by Two and More Diaphragms in a Rectangular Waveguide
12
10.1615/TelecomRadEng.v57.i5.40
V. V.
Scherbak
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085, Ukraine
Resonant mutual wave conversion on multistrip diaphragm cascades have been analyzed. Nontrivial situations of the optimum wave interaction and suppression of undesirable mode coupling have been found. In working multiparametric optimization problems, the algorithms used are supplemented with the regularization procedures.
Field Interaction with Inhomogeneous Non-Stationary Planer Structures of Finite Size: Solution of Inverse Problems
5
10.1615/TelecomRadEng.v57.i5.50
I. Yu.
Vorgul
V. Karazin National University of Kharkov, 4, Svoboda Sq., Kharkov, 61077, Ukraine
The interaction of electromagnetic fields with a non-stationary, uniaxially-inhomogeneous conducting medium is analyzed. A new technique is suggested for treating one-dimensional inverse problems for media of this kind. An algorithm has been developed for solving the non-stationary inverse problems to recovery space-and-time dependences of conductivity of the ID media from known reflected and incident fields. The algorithm's potential, as applied to diagnostics and synthesis of planar non-stationary structures is illustrated by numerical examples.
Algorithm of Modeling the Green's Functions of Multilayered Dielectric Structures
5
10.1615/TelecomRadEng.v57.i5.60
L. M.
Karpukov
Zaporizhzhya National Technical University, 64, Zhukovsky St., Zaporizhzhya, 69063, Ukraine
An algorithm of derivation of numerical-symbolic expressions for computing the Green's functions of multilayered dielectric structures in the boundary-value problems of electrostatics is considered. The algorithm is based on the suggested formulas for determining the transfer functions of decomposition schemes that model the multilayered structures.
Algorithms Using a Coherent Pulse Packet: Estimation Accuracy and Measure of Resolution for a Carrier Frequency and Its Rate of Change
6
10.1615/TelecomRadEng.v57.i5.70
N. N.
Minervin
Kharkov Military University
A. L.
Kuznetsov
Kharkov Military University, Ukraine
Algorithms, an estimation accuracy, and a measure of resolution both of a carrier frequency and of its rate of change are obtained in an explicit form with the use of a coherent pulse packet. The algorithms developed allow certain of their fundamental properties to be revealed. The formulas for a potential measurement accuracy and measures of resolution are derived.
On Transition Radiation of Surface Polaritons by a Modulated Flow of Charged Particles
10
10.1615/TelecomRadEng.v57.i5.80
Vladimir M.
Yakovenko
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085
I. V.
Yakovenko
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085
A mechanism of the interaction of a modulated flow of the charged particles with the surface waves in plasmalike media, superconductors and ideally conducting conductors with a periodically rough boundary have been investigated. Modulation frequency is designated by the surface wave frequency. It is found that the density of the energy flow of the surface wave undergoes oscillations depending on the relation between the period of Langmuir oscillations of the electron beam and the transit time of the particle from the modulation plane to the media interface. It is shown that the flow amount can considerably exceed that one for the surface waves excited by a charged strip.
Determining the Antiferomagnetic Resonance Frequency in Semimagnetic Semiconductors by Means of Surface Polaritons
9
10.1615/TelecomRadEng.v57.i5.90
S. A.
Borysenko
A.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
N. N.
Beletskii
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085
In the articles surface polaritons are investigated in semimagnetic semiconductors which are in a phase of antiferromagnetic ordering. The influence of the external static magnetic field and the electron concentration on the dispersion properties of the surface polaritons is determined. It is shown that the surface polaritons can have the dispersion independent of the direction of their propagation in the Voigt geometry. A new method based on excitation of the surface polaritons in the semimagnetic semiconductors is proposed for determination of the antiferromagnetic resonance frequency.
Solitary Resonance in the Diffraction on Impedance Gratings
16
10.1615/TelecomRadEng.v57.i5.100
N. A.
Balakhonova
Kharkov Military University 6, Svoboda Sq., Kharkov, 61005, Ukraine
A. V.
Kats
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura Sir., Kharkiv 61085, Ukraine
A detailed analytical treatment and numerical analysis of the resonance diffraction of a plane monochromatic wave on gratings formed by modulation of optical constants on the boundary of a highly reflecting medium are performed at an impedance approximation. Both Wood and Rayleigh-type anomalies in the intensities and phases of diffracted waves under the conditions of a solitary resonance are investigated. Specifically, the conditions under which the incident wave is transformed into the surface electromagnetic (EM) wave (EMW) and the specular reflection is totally suppressed. The relations of width, location and other parameters of resonance transformation to the optic constants of a medium and the grating parameters are derived. The obtained results suggest that using the Wood and Rayleigh anomalies hold a great deal of promise in terms of serving metrological purposes, thereby permitting the radiation and gratings' parameters as well as optical characteristics of a medium to be determined to a high degree of accuracy.
Constructive and Manufacturing Limitations of Microstrip Silicon PIN Detectors of Radiation
5
10.1615/TelecomRadEng.v57.i5.110
B. A.
Antonova
Kharkov National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkov, 61166, Ukraine
A. M.
Listratenko
State-owned Enterprise "Research Technological Institute for Equipment Development", 40/42, Primakov St., 61010 Kharkiv; Kharkiv National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkiv, 61166, Ukraine
V. N.
Borshchov
Kharkov National University of Radio Engineering and Electronics, 14, Lenin Ave 61166; Research and Technology Institute of Instrument Engineering 40/42, Primakova St., Kharkov, Ukraine
Mykola I.
Slipchenko
Kharkiv National University of Radio Electronics, 14, Nauky Avenue,
Kharkiv, 61166, Ukraine
The requirements are considered for design and manufacturing solutions of microstrip silicon detectors of ionizing radiation. The PIN receiver topology is suggested, allowing to develop the detector module based on aluminium microcables.
Analytic-Technological Probe Microscopy
10
10.1615/TelecomRadEng.v57.i5.120
V. I.
Bulakh
Kharkov National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkov, 61166, Ukraine
Mykola I.
Slipchenko
Kharkiv National University of Radio Electronics, 14, Nauky Avenue,
Kharkiv, 61166, Ukraine
Basic principles of the probe microscopy are discussed and classified. Area of the scanning probe microscope applications is defined for research in natural sciences and technology.
Impact of High-Power Pulse Fields on Biological Objects and Media
6
10.1615/TelecomRadEng.v57.i5.130
V. V.
Starostenko
Tavriya National University, 4, Vernadskogo ave., Simpheropol, 95007, Ukraine
The position of high-power pulse electromagnetic fields among such external factors as electromagnetic fields is considered. The results concerning carbonate solubility in the water activated by the powerful pulse fields, the data on the influence of the food prepared with activated water on morphometric and reproductive characteristics of the fruit fly as well as the direct action of the pulse fields on the black-pine-leaf are presented.