An experimental study of the resolving power of the rank detector of single pulses was carried out. Experimental dependences of the probability of detection- resolution of two pulses on the time position from the delay between the pulse fronts-are obtained. It is shown that the probability of correct detection - resolution reaches the value P101 = 0.5 with a signal-to-noise ratio = 2 for a delay between fronts of about 9,7 μs, and for a signal-to-noise ratio of 4 with a delay between fronts of about 9,1 μs.

Keywords: Rank detector, resolving power, probability of correct detection-resolution, signal-to-noise ratio, experiment

The frequency divider for 32, operating in a range of frequencies 8-18 GHz is considered. The specifics of the schematic diagram is shown. The design and element base is described in short. The model is made and its experimental research is carried out. The technique and the block diagram of the experiment is described. Level of harmonics of an output signal is measured. For decrease of level of harmonics of the useful signal the low-pass filter of type SALF-580 is used. Presence of a parasitic output signal in the absence of an input signal is revelead.

Keywords: frequency divider, microcircuit, experiment, amplitude-frequency characteristic, low-pass filter

Results of realization of a cylindrical dielectric wave guide of the SHF oven of range with the entered periodic not uniformity are presented in article. Besides the question of a research of influence of phase shift on the characteristic of a dielectric wave guide, and also dependence of change of characteristics on the provision of polarization of the field is brought up.

Keywords: SHF dielecric cilcular waveguide whith bragg periodic inhomogeneities

The article examines the relevance of the study of new coatings, with the possibility of controlling their characteristics. At the beginning of the article, we review the available methods for creating frequency-selective surfaces. Next, the created controlled frequency-selective surfaces are considered. The same is said about the construction of the created surfaces. At the end of the article, an analysis is made of the results obtained on the study of controlled frequency-selective surfaces, a comparison with previously obtained results.

Keywords: control, frequency-selective surface, microwave, radio-absorbing material

The article discusses the analysis of the directivity pattern of a symmetrical vibrator from a different spectrum of a broadband signal, to improve the quality of information transmission. The calculation of the directivity pattern of a symmetrical vibrator has been carried out.

Keywords: field strenght, symmetrical vibrator, beam pattern, broadband signal

The review of serial microwave detectors of domestic and foreign manufacturers for the frequency range of 0.1-220 GHz is presented. It is reviewed more than 60 models of microwave detectors. Brief information about their characteristics is given. The article can be useful for engineers when designing the receiving and measuring apparatus.

Keywords: serial microwave detectors, main electrical parameters, mounting dimensions, sensitivity, dynamic range.

An algorithm for the synthesis of the amplitude-phase distribution in quasi-circular antenna array for a given amplitude-phase radiation pattern is considered in the article. Selection of amplitude-phase radiation pattern as the set is due to the ability to use the most simple method of amplitude-phase synthesis of amplitude-phase radiation pattern. The predetermined amplitude-phase radiation pattern parameters (width of main lobe, level of side-lobes) are selected on the basis of physically realizable amplitude-phase pattern. The amplitude-phase radiation pattern may be formed using an circular or linear antenna. The solution is reduced to the formation of an overdetermined system of linear algebraic equations for the unknown complex amplitudes of the excitation currents in quasi-circular antenna array. The coefficients of the unknowns in the system of equations are amplitude-phase radiation pattern each of emitters for certain number of angular. The number of lines exceeds the number of emitters in a part of the antenna. The question of the possibility of saving the amplitude-phase radiation pattern parameters in the transition from the ring to the quasi-circular antenna array are discussed. Achieved mean square difference between the ring and the amplitude-phase distribution pattern quasi-circular antennas does not exceed 0,001.

Keywords: ring and quasi-circular antenna array, capability of pattern, amplitude-phase distribution synthesis

The experimental research of amplitude characteristics of low-noise amplifiers of microwave range of АС180400-071 type of Joint-Stock Company "SKARD-ELEKTRONIKS" manufacture was made. It is shown, that power of saturation can vary from 34 to 75 mW at input power 10 mW. On a number of frequencies monotony of the amplitude characteristic is not provided.

Keywords: limiting amplifier, power of saturation, measurement installation, amplitude characteristic

The article deals with the calcalation, simulation and experimental study of the filter on quater-wave resonators of the range 2 - 4 GHz. The resulting losses in the pass band are of about 1 dB and stop band on the second harmonic is 50 dB. The good coincidence between the simulation results and experiment is shown.

Keywords: filter, quarter-wave resonator, calculation, modeling, experiment

In this paper we consider the question of creating a secure data environment in an organization based on technology VLC (Visible light communication) with the use of PLC (Power line communication) modem. The study analyzes the domestic and foreign literature and patent documents, which confirmed the relevance of the subject and the need to improve and adapt technologies to local organizations, grounded potentially better protection against unauthorized access to data in comparison with wired and Wi-Fi networks The structural scheme of realizing data transmission based VLC technology involving the use of LED light sources as a transmitter of a communication system with the integration of PLC interface. Using the PLC interface simplifies installation and implementation of the VLC transmitter modules, since the data signal is supplied to the latter on power lines providing power lighting. An assessment of conditions based on the technology transfer system functioning VLC with PLC interface, found that at the lowest acceptable signal / noise ratio equal to 6 dB bandwidth of the channel is equal to 8Mbit / s, and the bit error rate tends to zero. The research results can be used by VLC technology building enterprise network to the PLC interface, also find application for further study of this technology.

Keywords: vlc, li-fi,plc, visible light communication, modulation, receiver module, transmitter module, optical signal

The frequency divider for 8, operating in a range of input frequencies 8-18 GHz is considered. The function diagram is shown. The design and element base is described in short. The model and its experimental research is made. The technique and the block diagram of the experiment is described. Frequency dependence of transmission coefficient is measured. It is shown, that the frequency divider together with the two-cascade limiting amplifier has sensitivity minus 75 dBW, transmission coefficient is about 40 dB and nonuniformity of transmission coefficient is 1.64 dB. Level of the second and third harmonic of output signal is measured.

Keywords: frequency divider, centimeter waves, microcircuit, experiment, amplitude-frequency characteristic

Experimentally investigated the influence of the interference signals of the radio-electronic complex of suppressing radio-controlled explosive devices on the performance of satellite navigation monitoring system. Mapped results of estimated calculations of the radius of suppression with the experimental values in conditions close to real. The conclusion about the need to take organizational measures and solving technical problems to improve the noise immunity of navigation equipment of consumers of GLONASS/GPS when it is used together with electronic systems to suppress the radio links control the explosion in the composition of the Board of special transport special units.

Keywords: interference immunity, radio navigation equipment, suppression factor, assessing interference immunity, satellite navigation

The article considers the description of the design and construction of the Ultra high frequency mixer on a combination and slotted a microstrip transmission line. Presents the methodology and results of the experiment by analysis the amplitude characteristic. It is shown that the conversion loss equal to 9 dB, the dynamic range of not less than 60 dB, the upper limit of the linearity of the amplitude characteristic is 1mW.

Keywords: mixer, Schottky barrier diodes, microstrip line, slotline, decimeter range, amplitude response, Ultra high frequency.

The paper discusses passive microwave structures with periodical heterogeneites in the coaxial cable that are based on optical technologies transfer similar to the fiber Bragg structures. Among the considered: Bragg, long-period and chirped gratings, Fabry-Perot interferometer, couplers. Results and analysis of the main methods of coaxial Bragg microwave structures modeling, including the method of coupled modes and the method of directed graphs are described and discussed. Obtained spectral characteristics of these structures in their experimental implementation are presented. The main production technology of coaxial Bragg microwave structures and their impact on the specified spectral characteristics are defined. Embodiments of said microwave coaxial Bragg structures using in sensor applications are shown. In particular, we discuss the creation of mechanical strain, dielectric parameters of liquids and the level of liquid products sensors.

Keywords: Bragg microwave structures on the coaxial cable, modeling, method of directed graphs, method of coupled modes, sensor applications, deformation, dielectric permittivity, level meter

The paper discusses the active microwave elements with periodic structures, located in the near ​​radiation zone, that are based on optical technology transfer by analogy with controlled electro-layered structures. Among the considered: microwave antenna with controllable operating wavelength and radiation pattern width and its analog - selective multilayer dielectric mirror. Results and analysis of the main methods of modeling of microwave antenna and its periodic structure are discussed. Obtained characteristics of antennas in their experimental implementation are presented. The basic technology of antennas manufacturing and influence of their periodic structures manufacturing quality to accurately reflect the operating wavelength and the width of the pattern to the desired value are defined. Applications of antennas designed as shapers of the probing radiation in sensor and medical applications are shown. In particular, we discuss the creation of dielectric permittivity sensors and microwave treatment systems with controllable wavelength.

Keywords: microwave antenna with a periodic structure, located in the near radiation zone, selective multilayer dielectric mirror, modeling, working wavelength, radiation pattern, sensor applications, the dielectric permittivity

In article relevance of conversion dense the bituminous of oil slimes with use of microwave radiation, including using solvents is considered. At the beginning of article the overview of traditional methods of conversion of oil slimes and a benefit of conversion with microwave energy use is shown. Further the principles of conversion of dense bituminous oil slime using microwave technologies are generalized. In the same place it is told about a design of a laboratory complex for processing of dense bituminous oil slime in which experiments on processing were made. Features of use of solvents when processing are unveiled dense the bituminous of oil slimes with use of the microwave oven of energy. At the end of article the analysis of the received results of processing of dense bituminous oil slime, comparison with earlier received results is provided.

Keywords: Microwave oven, dense bitumizirovanny oil slimes, features of processing, design of a laboratory complex, solvents, processing methods, analysis, comparison of results, pilot study

"One of the major drawbacks of modern alloyed metal cathodes Pd-Ba is the inhomogeneous distribution of the intermetallic Pd5Ba in the matrix Pd. This fact leads to an underestimation of life and technical performance of devices of microwave electronics on the basis of the cathodes. A substantial improvement in uniformity of cathode alloys Pd-Ba should lead the operation of mechanical activation of powder Pd, carried out prior to its compression process. The paper studied the effect of mechanical activation on the particle shape, particle size distribution and dispersion of powder Pd. It is shown that mechanical activation results in a substantial reduction in the average size and average particle size of Pd powder, as well as a substantial increase of the specific surface of the particles. The optimal regimes of mechanical activation of powder of Pd with a view to its use for metallosplavnyh cathodes."

Keywords: alloyed metal cathodes Pd-Ba, mechanical activation, dispersion, particle size distribution, average particle size, surface area, the emission properties

For the first time, using modern analytical methods studied phase and impurity composition of the cathode alloys Pd-Ba, obtained by industrial technology. The concentration of harmful impurities (C, Zn, Ba, Cu) in objects of study does not exceed the standards for these materials. Transmission electron microscopy and X-ray analysis confirmed the previously observed biphasic alloys Pd-Ba, from which one phase - intermetallic compound (Pd5Ba), second - palladium (matrix), wherein the intermetallic compound is very unevenly distributed in the matrix. The object of the study was first detected undesirable phase Pd2O. It is found that in the alloys of Pd-Ba grain Pd - large (about one micron), grain phase Pd5Ba - from a few hundred nanometers to one micron. All beans there is a high density of randomly distributed dislocations. Processing methods are proposed to improve the homogeneity of the alloy.

Keywords: alloyed metal cathodes, Pd-Ba, emission properties, transmission electron microscopy, X-ray analysis, impurity composition, the coefficient of secondary electron emission

For the first time, using modern analytical methods studied phase and impurity composition of the cathode alloys Pt-Ba, obtained by industrial technology. The concentration of harmful impurities (C, Zn, Ba, Cu) in objects of study does not exceed the standards for these materials. Transmission electron microscopy and X-ray analysis confirmed the previously observed biphasic alloys Pt-Ba, from which one phase - intermetallic compound (Pt5Ba), second - platinum (matrix), wherein the intermetallic compound is very unevenly distributed in the matrix. It is found that in the alloys of Pt-Ba Pt grains - small (a few hundred nm) and grain Pt5Ba - large (make several microns) and more sophisticated. Inside there are grains Pt5Ba voltage. Processing methods are proposed to improve the homogeneity of the alloy.

Keywords: alloyed metal cathodes, Pt-Ba, emission properties, transmission electron microscopy, X-ray analysis, impurity composition, the coefficient of secondary electron emission

The problem of developing a compact and narrow-band waveguide filters in the rectangular waveguides with two centrally symmetric L-crests is solved. The aim of this article is the experimental verification of the results of computer simulation of the properties of thin metal diaphragms with a elaborate aperture. The experimental results confirm the effectiveness of the developed theoretical algorithms and make possible to use proposed thin metal diaphragms as basic elements in design of compact waveguide band-pass and band-locking filters.

Keywords: resonant diaphragm filter, the waveguide band-pass filter, band-barrier filter.

This paper presents multimode waveguide Van-Atta array based on a pair of waveguide radiators. For dispersionless transmission lines we selected 3 coaxial lines, located inside a metal box, which frames the waveguides. Experimental data of monostatic radar cross-section diagram of antenna array in 6-12 GHz in frequency domain are obtained. Experimental study was performed in anechoic chamber of Share Scientific Center “Applied electrodynamics and antenna measurements”, Southern federal university. The subject of research was a model of multimode waveguide Van-Atta array based on a pair of waveguide radiators with aperture size 50*10 mm. An array placed in shield in the form of an elliptical cylinder. This configuration provides an opportunity to decrease ghost reflection from connectors and interconnection cable. A method for compensation background reflections, which experimentally performed on a model of multimode waveguide Van-Atta array, located inside an elliptical cylinder is proposed in this paper. This condition is completely accurate to the real usage conditions. This method is necessary for the research of objects with RCS commensurable with RCS of anechoic chamber. Backscattering diagrams, produced by aperture of Van-Atta array without background reradiation from constructional elements is obtained. The comparison between theoretical backscattering diagrams and results, which obtained by subtraction of experimental data of Van-Atta array with open aperture and aperture closed by radar-absorptive material is performed. Results by this method has shown good match between the numerical and experimental data. This fact confirms the accuracy of the proposed method for processing of experimental data.

Keywords: Van-Atta array, monostatic diagram of radar cross-section, multimode array, mesurements of scatterrin characteristics

The article discusses the relevance of the compact, mobile radio modem sup-ports modern interface USB. The result is the development of a half-duplex tran-sceiver is a device that works with a frequency manipulated signal in a license-free frequency band. The radio modem is equipped with interface USB, through which data is exchanged, as well as its food, as antennas used inefficient quarter-vibrators. Increase in radio range is possible by the use of antennas with high directive gain. Experimental studies of two designed devices were carried out in an urban setting. Their aim was to establish the maximum sustainable radio range (with line of sight) at different data rates as error correction at the reception, and without. Experimenter, away from the transmitting radio modem, monitored the received data. The use of error-correcting coding is most effective at high data rates (up to 3 dB) than at low (1-2 dB). Increase in radio range is possible by reducing the transmission speed - this is due to the dependence of the receiver sensitivity of the speed manipulation. It should also be noted that the decrease in device size is possible by structural modification.

Keywords: radio interface USB, mobile radio, radio communication range, noiseless coding, frequency keyed signal, experimental studies.

There is discussed an influence of n-p-n HBT scaling on its RF performance in the article. The behaviour of cut-off and maximum frequency of DUT at the transition from 0.18 um down to 0.09 um BiCMOS technology is demonstrated, its dependence from construction and technological variations of the heterojunction bipolar transistor, as well. It was shown, that the approach called "direct" scaling appeared to be inappropriate as a frequency-increase method and some constructive and technological recommendations were discussed, including Ge profile shape, impact of deep collector implantation dose and cap-layer thickness.

Keywords: silicon-germanium, SiGe HBT, BiCMOS, RF performance

The article describes an alternative approach to the construction of the transponder timing systems. Describes the proposed approach to the creation of a highly mobile system, the basic principles of its operation and the analysis of experimental results

Keywords: transponder timing systems, time-stamping, wireless tags, specialized communication protocols

By means of Lemma Lorentz solution to the problem of excitation of an infinite periodic microstrip array with non-linear loads (NN), whose parameters vary in time, was obtained. For the formation of a system of integral equations nonlinear boundary conditions of impedance type, arising from polynomial representation of V-I characteristics of non-linear loads was applied. Numerically patterns in dependence of the reflectance of such a array at combination frequencies on the electrical parameters of loads were identified. The experimental data which confirm possibility of control with levels of combinative frequency components by frequency change and amplitude of voltage pump are given.

Keywords: microstrip structure, non-linear loads, spectrum of the reflected signal, combinational harmonics, parametric excitation