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Regular version of the site
Of all publications in the section: 67
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Article
Падеров В. П., Силкин Д. С., Горячкин Ю. В. и др. Радиотехника и электроника. 2017. Т. 62. № 6. С. 616-620.

The effect of hydrogen-related shallow thermal donors and acceptor-like defects arising under proton irradiation of silicon on the breakdown voltage of a high-voltage p–n junction is considered. The relations making it possible to compute the breakdown voltage of the irradiated p–n junction taking into account the increase in critical field intensity during the ingress of hydrogen-related shallow thermal donors into the region of collisional ionization of the p–n junction are obtained. A technique for determination of the layer position and the minimum dose of hydrogen-related shallow thermal donors making it possible to decrease the breakdown voltage by a specified amount is proposed.

Added: Oct 7, 2020
Article
Назарова М. В., Солнцев В. А., Мелихов В. О. Радиотехника и электроника. 2011. Т. 56. № 4. С. 511-513.

Electron bunching processes in a carcinotrode (backward_wave oscillator with self_modulation of electron emission) operating in the high_efficiency regime determined previously are investigated. The possibility of obtaining an efficiency of about 80% is explained from the physical viewpoint.

Added: Apr 12, 2012
Article
Тагер А. С., Солнцев В. А. Радиотехника и электроника. 2011. Т. 56. № 4. С. 389-398.

The effect of dielectric supports on the slowing factor and dispersion of the helical line in TWT is considered. A method for the calculation of the slowing down in the helical line with the complicated configuration of the dielectric supports is proposed. A procedure for the experimental study of dispersion in the helical slow_wave system is presented. The calculated results are compared with the experimental data.

Added: Apr 12, 2012
Article
Азов Г. А., Мозговой Ю. Д., Тихомиров С. А. и др. Радиотехника и электроника. 2003. Т. 48. № 7. С. 877-882.

Dispersion characteristics are calculated and the design is described of the slowing structure with ceramic-metal supports for a high-power ultrawideband traveling-wave tube. Experimental dispersion charac- teristics (measured in a frequency band of one-and-a-half octaves) of two types of helical slowing structures are obtained for different heights of lateral fins of the metal support holder. Theoretical results are compared with experimental data.

Added: Jan 31, 2013
Article
Мухин С. В., Никонов Д. Ю., Солнцев В. А. Радиотехника и электроника. 2008. Т. 53. № 10. С. 1324-1332.

The properties of the local coupling impedance that determines the efficiency of the electron–wave interaction in periodic slow-wave structures are investigated. This impedance is determined (i) through the characteristics of the electromagnetic field in a slow-wave structure and (ii) through the parameters of a two-port chain simulating the structure. The continuous behavior of the local coupling impedance in the passbands of slow-wave structures, at the boundaries of the passbands, and beyond the passbands is confirmed with the help of a waveguide–resonator model.

Added: Dec 26, 2012
Article
Андреевская Т. М., Солнцев В. А. Радиотехника и электроника. 2014. Т. 59. № 9. С. 864-871.

The transmission of а complex signal through nonlinear structures (semiconductor diodes, high-power transistor amplifiers, microwave vacuum amplifiers, ets.) is investigated by means of quasi-stationary method, and functional models of devices are applied. The  models  use  the  quasi-stationary method of  analysis of multifrequency signal transformation. Certain  properties and peculiarities  that  are exhibited by  nonlinear devices  and that induce  so-called  spectrum multiplexing, i.e., formation of combination components,  including those observed within the basic spectrum,  are considered. The possibilities  of spectrum multiplexing in nonlinear elements  with a polynomial quadratic, cubic, or more complicated  characteristic  are discussed.

Added: Dec 13, 2014
Article
Кухаренко А. С., Елизаров А. А. Радиотехника и электроника. 2016. Т. 61. № 9. С. 865-870.

A design of a band-stop frequency-selective surface based on a planar mushroom-shaped metamaterial with an electronically tunable stopband has been proposed and investigated. The results of numerical simulation and experimental measurements of the parameters of a finite section of the metamaterial with mounted varicaps are presented. These results illustrate the shift of the structure stopband occurring simultaneously with a change in the capacitance of the lumped elements. Frequency dependences of the inherent dielectric parameters have been obtained. They indicate the presence of negative values of the effective permittivity and effective permeability of the proposed structure and the presence of the surface impedance that significantly exceeds the free-space characteristic impedance and is frequency-tunable.

Added: Aug 29, 2016
Article
Савченко В., Савченко А. В. Радиотехника и электроника. 2020. Т. 65. № 11. С. 1101-1108.

The article considers the problem of automatic segmentation of a speech signal into phonetic units in conditions of their a priori uncertain spectral composition and correlation properties. A guaranteed significance level criterion is developed based on the information–theoretic approach. An example of practical application of this criterion is considered; a full-scale experiment is set up and conducted. It is shown that the proposed criterion can guarantee a stable significance level when processing speech frames of short duration.

Added: Nov 28, 2020
Article
Савченко А. В. Радиотехника и электроника. 2014. Т. 59. № 4. С. 339-345.
Added: Mar 26, 2014
Article
Кухаренко А. С., Елизаров А. А. Радиотехника и электроника. 2016. Т. 61. № 2. С. 192-198.

Methods for extension of the rejection band of microwave devices on the basis of planar modified mushroomshaped metamaterials comprising either twolayered topological structures with frequencyselec tive surfaces or multilayer bulk structures with intermediate layers containing splitring resonators are pro posed. Computer simulation of such devices, clearly demonstrating a two to sixfold extension of the rejec tion band is performed. Experimental results confirming the results of numerical simulation are presented.

Added: Jan 15, 2016
Article
Азов Г. А., Хриткин С. А. Радиотехника и электроника. 2012. Т. 57. № 6. С. 686-690.

A numerical simulator of the interaction processes in helical traveling-wave tubes is developed on the basis of the method of large particles in the 1D approximation with the use of the calculation methods developed previously. The output characteristics (frequency dependences of the output power and gain factor) of high-power traveling wave tubes based on helical slow-wave structures for operation in the C and Ku wave bands are studied theoretically and experimentally. It is shown that the results of numerical simulation are in satisfactory agreement with experimental data.

 

Added: Nov 21, 2012
Article
Азов Г. А., Ефремова М. В., Солнцев В. А. и др. Радиотехника и электроника. 2016. Т. 61. № 8. С. 788-793.
Added: Jun 25, 2016
Article
Азов Г. А., Хриткин С. А. Радиотехника и электроника. 2010. Т. 55. № 3. С. 369-373.

The electrodynamic characteristics of the helical slow-wave structure of a high-power pulse traveling-wave tube operating in the centimeter wavelength range are calculated by means of the solution of the dispersion equation and simulation. Special attention is focused on the effect of a helix wire profile on the electrodynamic characteristics of the system. The results of the theoretical study are compared with the experimental data.

Added: Apr 17, 2012
Article
Канавец В. И., Мозговой Ю. Д., Хриткин С. А. Радиотехника и электроника. 2010. Т. 55. № 4. С. 500-505.
Exchange interaction of electron and positron bunches is simulated using the particle-in-cell method and macroscopic electron and positron wave functions. It is shown that a periodic exchange process with low or high nonlinearity is realized during variations in the electron and positron concentrations.
Added: Apr 17, 2012
Article
Солнцев В. А., Колтунов Р. П. Радиотехника и электроника. 2010. Т. 55. № 11. С. 1362-1375.

A linear theory of the discrete interaction of electron beams and electromagnetic waves in slow-wave structures (SWS) is developed. The theory is based on the finite_difference equations of SWS excitation.The local coupling impedance entering these equations characterizes the field intensity excited by the electron beam in interaction gaps and has a finite value at SWS cutoff frequencies. The theory uniformly describes the electron–wave interaction in SWS passbands and stopbands without using equivalent circuits, a circumstance that allows considering the processes in the vicinity of cutoff frequencies and switching from the Cerenkov mechanism of interaction in a traveling wave tube to the klystron mechanism  when passing to SWS stopbands. The features of the equations of the discrete electron–wave interaction in pseudoperiodic SWSs are analyzed.

Added: Apr 12, 2012
Article
Солнцев В. А., Кравченко Н. П., Шабанов Д. С. Радиотехника и электроника. 2014. Т. 59. № 8. С. 818-823.

The effect of space charge on the decisions of the previous universal characteristic equation of electron waves, respectively, and the gain in the traveling-wave tubes (TWT) with periodic slow-wave system (SWS). The main attention is paid to the features of the gain of the electron waves in comparison with the results of the theory of J. Pierce is valid only for the TWT with "smooth" SWS.

Added: Apr 23, 2014
Article
Кравченко Н. П., Мухин С. В., Касаткин А. Д. и др. Радиотехника и электроника. 2019. Т. 64. № 5. С. 506-512.
Added: Mar 9, 2018
Article
Канавец В. И., Мозговой Ю. Д., Хриткин С. А. Радиотехника и электроника. 2006. Т. 51. № 3. С. 357-363.
Added: Jan 31, 2013
Article
Канавец В. И., Мозговой Ю. Д., Хриткин С. А. Радиотехника и электроника. 2003. Т. 48. № 6. С. 753-757.

The self-excitation of electron generators based on the flows of nonlinear excited oscillators obtained by a centrifugal electrostatic focusing is analyzed. The possibility of the master–slave synchronization of the generators is demonstrated. It is shown that the mutual synchronization leads to the narrowing of the spectral line.

Added: Jan 31, 2013