Vol 20, No 1 (2017)

Articles

Research of electromagnetic characteristics of chiral metamaterial based on the thin-wire perfectly conducting elements consisting of mutually orthogonal helices

Klyuev D., Kubanov V., Osipov O., Pochepcov A., Rezepova E.

Abstract

The paper considers the solution of the problem of plane linearly polarized electromagnetic waves reflection from a planar metamaterial layer consisting of thin-wire perfectly conducting two mutually orthogonal helices matrix. The dispersion model is built for considered metamaterial. The problem was solved by the partial areas method and solution was reduced to a linear algebraic equations system for the unknown reflection and transmission coefficients. The frequency selective investigated metamaterial properties were identified as a numerical analysis result. In particular, it is proved that the metastructure is a frequency selective screen for microwave radiation at some frequencies.

Physics of Wave Processes and Radio Systems. 2017;20(1):4-10
pages 4-10 views

Analytical solution of the problem of deformation during drying by electromagnetic radiation

Afanas’ev A., Siplivy B.

Abstract

Developed an analytical method of calculating steady-state distributions of temperature and moisture content in a flat sample, the blown air flow under the action of intense electromagnetic radiation. Based on the obtained distributions of the formulas with which you can produce engineering estimates of the magnitude of deformations caused by the inhomogeneity of the field moisture content.

Physics of Wave Processes and Radio Systems. 2017;20(1):11-18
pages 11-18 views

The experimental assessment of accuracy of measurement of coordinates of radio-radiation of range of high frequencies by goniometric and goniometric and range-metering methods

Razin´kov S., Reshetnyak Y.

Abstract

The experimental assessment of accuracy of measurement of coordin ates of radio-radiation of range of high frequencies goniometric and goniometric and range-metering is carried out by methods. Regularities of mean squared measurement errors of coordin ates of radio stations of meteo-information of airfield networks, standard frequencies and time, transmitters of telecode and continuous messages in different season and are probed days.

Physics of Wave Processes and Radio Systems. 2017;20(1):19-25
pages 19-25 views

Dynamic of entangled pair of Rydberg atoms successively passing a thermal cavity

Bashkirov E.

Abstract

In the present paper we invetigated the entanglement dynamics of two Rydberg atoms which are prepared in Bell’s type entngled state and succesively passing one-mode thermal cavity of one-atom maser. On the basis of exact solution we derived the Peres-Horodetskii parameter. We carried out the computer modeling of the entanglement for different model parameters.We shown that the thermal field can partially restored the initial entanglement.

Physics of Wave Processes and Radio Systems. 2017;20(1):26-32
pages 26-32 views

Complex form of discrete mappings of Thomson self-oscillatory systems

Zaitsev V., Zaitsev O., Shilin A.

Abstract

New discrete mappings of Thomson type self-oscillatory systems are offered. Mappings are received by method of structural synthesis with use of the sequences of discrete counting of pulse characteristics of the resonators which are a part of self-oscillatory systems. The method of the slow-changing amplitudes is used for the analysis of response characteristics of self-oscillations in the discrete time. The example of generation of self-oscillations with discrete mapping of the oscillator of Van der Pol is given.

Physics of Wave Processes and Radio Systems. 2017;20(1):33-38
pages 33-38 views

Methods used to develop the light emitting nanostructures with InGaAs/GaAs quantum wells

Saeid S.

Abstract

Light-emitting diodes based on InGaAs/GaAs quantum wells (QW) were fabricated and investigated. Cover layers of GaAs (15, 25, 35 nm) were deposited by high temperature (630 ˚C) epitaxy. Ferromagnetic Co metal layer was deposited by 60 ˚C and 90 ˚C and used as a spin injector. Incorporation of a tunnel-thin barrier of Al2O3 dielectric layer between the ferromagnet and the semiconductor cover layer leads to reduce the influence Co on the luminescence intensity, which indicates the reduction of penetration of impurity and defects into active region (QW). The experimental results demonstrate that manipulating of the cover-layer thickness and of the metal-film-deposition temperature improve performance and efficiency of spin injection light-emitting diodes.

Physics of Wave Processes and Radio Systems. 2017;20(1):39-42
pages 39-42 views

Fast microwave power converter based on the radioelectrical effect

Shcherbak A., Kurganskaya L., Golubeva D.

Abstract

The problem of practical application of Hall effect at microwave frequencies to measure of continuous and pulsed microwave power passing in a rectangular waveguide was considered. The analysis of contribution of Hall effect, thermopower and contact thermopower to summary output voltage of converter was carried out. Methods of reducing volume and the contact thermopower have been suggest. Samples of semiconductor microwave power converters based on Hall effect have been designed and constructed. The influence of microwave power level on the conversion factor has been studied. It was found that the conversion coefficient not altered in dependence of the microwave power from 0 to 10 W of continuous signal and from 0 to 3000 W of pulsed signal with duty cycle lower 0.08 %.

Physics of Wave Processes and Radio Systems. 2017;20(1):43-48
pages 43-48 views

Development of the device for definition of the integrated circuits logic gain

Tyulevin S., Shopin G., Piganov M., Mishanov R.

Abstract

The relevance of the logical elements and integrated circuits logic gain is substantiated. The device for definition of the integrated circuits logic gain is offered. The device contains a rectangular-pulse generator, an integrated circuit, a voltmeter, loading elements, a switch, AND gate, a comparator, a pulse meter and reference-voltage source.

Physics of Wave Processes and Radio Systems. 2017;20(1):49-52
pages 49-52 views

Research and design of interface for audio and video secure communication system

Cherepanov A., Mavrichev A., Dolmatov A., Luchinin A., Malygin I.

Abstract

Currently, audio-video information can be transmitted by various communication systems such as WiFi, WiMAX, LTE, or 3G. Despite the fact that these systems fulfill their functions quite well, they are united by a common drawback - they are not designed to work in conditions of strong interference. To transfer audio-video information in the presence of strong interference, the authors have developed a data transfer system using spread spectrum signals. This article is devoted to the design, configuration and interface study of how to link this system with standard sources and receivers, both audio and video.

Physics of Wave Processes and Radio Systems. 2017;20(1):53-57
pages 53-57 views

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