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  Subjects -> ELECTRONICS (Total: 153 journals)
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 1)
Advances in Electronics     Open Access   (Followers: 3)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 5)
Advances in Microelectronic Engineering     Open Access   (Followers: 2)
Advances in Power Electronics     Open Access   (Followers: 7)
Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 97)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 12)
Annals of Telecommunications     Hybrid Journal   (Followers: 4)
APL : Organic Electronics and Photonics     Hybrid Journal   (Followers: 1)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 6)
Archives of Electrical Engineering     Open Access   (Followers: 9)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 5)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 10)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 16)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 15)
Biomedical Instrumentation & Technology     Hybrid Journal   (Followers: 5)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 5)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 2)
Bulletin of the Polish Academy of Sciences : Technical Sciences     Open Access  
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 13)
China Communications     Full-text available via subscription   (Followers: 4)
Circuits and Systems     Open Access   (Followers: 9)
Consumer Electronics Times     Open Access   (Followers: 4)
Control Systems     Hybrid Journal   (Followers: 26)
Electronic Design     Partially Free  
Electronic Markets     Hybrid Journal   (Followers: 5)
Electronic Materials Letters     Hybrid Journal   (Followers: 3)
Electronics     Open Access   (Followers: 9)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 5)
Electronics Letters     Hybrid Journal   (Followers: 20)
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 23)
Energy Harvesting and Systems : Materials, Mechanisms, Circuits and Storage     Hybrid Journal   (Followers: 1)
EPJ Quantum Technology     Open Access  
EURASIP Journal on Embedded Systems     Open Access   (Followers: 9)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Frequenz     Hybrid Journal   (Followers: 3)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 2)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 20)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 3)
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 15)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 13)
IEEE Consumer Electronics Magazine     Full-text available via subscription   (Followers: 17)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 12)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 3)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 7)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 10)
IEEE Transactions on Audio, Speech, and Language Processing     Hybrid Journal   (Followers: 13)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 26)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 17)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 8)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 14)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 21)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 8)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 7)
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 6)
IET Power Electronics     Hybrid Journal   (Followers: 14)
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 10)
IETE Journal of Education     Open Access   (Followers: 2)
IETE Journal of Research     Open Access   (Followers: 9)
IETE Technical Review     Open Access   (Followers: 4)
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 3)
Informatik-Spektrum     Hybrid Journal  
Instabilities in Silicon Devices     Full-text available via subscription  
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 2)
International Journal of Advanced Electronics and Communication Systems     Open Access   (Followers: 5)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 20)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 3)
International Journal of Aerospace Innovations     Full-text available via subscription   (Followers: 12)
International Journal of Antennas and Propagation     Open Access   (Followers: 7)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 1)
International Journal of Biomedical Nanoscience and Nanotechnology     Hybrid Journal   (Followers: 6)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 4)
International Journal of Computer & Electronics Research     Full-text available via subscription   (Followers: 2)
International Journal of Control     Hybrid Journal   (Followers: 13)
International Journal of Electronics     Hybrid Journal   (Followers: 2)
International Journal of Electronics & Data Communication     Open Access   (Followers: 4)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 3)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 1)
International Journal of High Speed Electronics and Systems     Hybrid Journal  
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 1)
International Journal of Nano Devices, Sensors and Systems     Open Access   (Followers: 4)
International Journal of Nanoscience     Hybrid Journal  
International Journal of Numerical Modelling:Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 2)
International Journal of Power Electronics     Hybrid Journal   (Followers: 8)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 2)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 3)
International Journal of Superconductivity     Open Access  
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 2)
International Journal on Communication     Full-text available via subscription   (Followers: 9)
International Journal on Electrical and Power Engineering     Full-text available via subscription   (Followers: 10)
International Transaction of Electrical and Computer Engineers System     Open Access  
Journal of Biosensors & Bioelectronics     Open Access   (Followers: 2)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 5)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 1)
Journal of Computational Intelligence and Electronic Systems     Full-text available via subscription  
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 4)
Journal of Electrical Bioimpedance     Full-text available via subscription   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 2)

        1 2 | Last

Journal Cover   Radiophysics and Quantum Electronics
  [SJR: 0.236]   [H-I: 9]   [2 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1573-9120 - ISSN (Online) 0033-8443
   Published by Springer-Verlag Homepage  [2281 journals]
  • Model of the Aeronautical Service Channel in the Meter and Decimeter
           Wavelength Bands for Adaptive Space Diversity Reception
    • Abstract: We propose a model of the formation of signals generated by spaced diverse antennas operated in the meter and decimeter wavelength bands and used for the aeronautical service channel. This model is used to assess potential capabilities of spatial interference cancelers in a multi-beam aeronautical communication channel.
      PubDate: 2015-07-26
       
  • Combined Method for Measuring 3D Wave Spectra. I. Algorithms to Transform
           the Optical-Brightness Field into the Wave-Height Distribution
    • Abstract: Although optical tools for measuring the surface-wave characteristics provide the best spatial and temporal resolutions compared with other methods, they face some difficulties while converting the results of indirect measurements into the absolute levels of waves. In this paper, we propose a combined optical method for measuring the 3D spectral density of the heights and the time realizations of the surface-wave profiles. The method involves, first, synchronous recording of the optical-brightness field on a rough-surface area and the surface-oscillation measurement at one or several points and, second, filtering of the spatial image spectrum, so that the filter parameters are also chosen from the condition of maximum correlation of the reconstructed and measured surface oscillations at one or two points. The second part of this work deals with the results of measuring the multi-dimensional wave spectra on the basis of the proposed method.
      PubDate: 2015-07-24
       
  • Near-Field Tomography and Holography of Low-Contrast Subsurface Objects
    • Abstract: We develop a new method for electromagnetic computer tomography of distributed subsurface inhomogeneities and holography (i.e., retrieval of the form) of internally homogeneous subsurface objects. The method is based on solving the inverse problem of near-field scattering with allowance for the data of multifrequency measurements of the two-dimensional distribution of the scattered-field complex amplitudes along the medium surface over the region of inhomogeneities.
      PubDate: 2015-07-24
       
  • Self-Similar Acoustic Waves in Homogeneous Media with Different-Modulus
           Nonlinearity and Relaxation
    • Abstract: We present the results of studying theoretically of propagation of plane longitudinal acoustic waves in homogeneous media with different-modulus elastic nonlinearity and relaxation. Exact analytical relations are obtained for the profiles of stationary waves and self-similar pulsed and periodic waves propagating in such media with no shape variations.
      PubDate: 2015-07-24
       
  • Energy Characteristics of Radiators of Ultrashort Electromagnetic Pulses
    • Abstract: It is shown that to use the maximum share of the energy of a unipolar ultrashort electric pulse, its duration and shape, as well as the transmitting antenna parameters should, be related to the receiver center frequency and passband in a certain manner. Distortions introduced by the propagation effects to the received-radiation spectrum shape increase with broadening radiation and receiver frequency bands.
      PubDate: 2015-07-24
       
  • Observations of the Ionospheric Wave Disturbances Using the Kharkov
           Incoherent Scatter Radar upon RF Heating of the Near-Earth Plasma
    • Abstract: Characteristics of the wave disturbances of the ionospheric electron number density were measured using the Kharkov incoherent scatter radar. The disturbance generation accompanied the SURA heating of the near-Earth plasma by high-power periodic radiation. The distance between the heater and the radar was about 960 km. The possibility of generating ionospheric wave disturbances with a period of 20 to 30 min in the internal gravity wave range was confirmed. The disturbance propagation velocity was near 320–400 m/s, and the relative amplitude of the electron density variation was 1–10%. The wave disturbances appeared in the altitude range 145–235 km. Aperiodic bursts of the electron number density with a relative amplitude of up to 5–10% were detected after the first switch-ons of periodic radiation in the 30-min heating — 30-min pause regime at altitudes of 145 to 310 km. The observation results generally conform to the synchronous observation data obtained using the Kharkov vertical-sounding Doppler radar and a network of ionosondes.
      PubDate: 2015-07-24
       
  • Estimation of the Mutual Time Delay of Signals with Pseudorandom Frequency
           Hopping
    • Abstract: We propose a method for determining the mutual time delay during the propagation of signals with pseudorandom frequency hopping in different channels. A modified algorithm for calculating the uncertainty function, which permits calculation parallelization, is used to compensate for the influence of the Doppler effect during the signal recording. The results of studying the efficiency of the proposed method are presented.
      PubDate: 2015-07-24
       
  • Pulse Repetition Period in a Sequence in the Acoustic Tensometry
           Definition
    • Abstract: We consider a technique for determining the ultrasonic wave propagation delay upon mechanical stress measurements by using multichannel matched filtering. The expediency of using an “interval–delay” surface as a graphic representation of the results has been substantiated. The experimental results are reported.
      PubDate: 2015-07-01
       
  • Frequency-Time Resolution of the Autonomous and Mutual Wigner–Ville
           Transform
    • Abstract: We estimate the accuracy of measurement of the instantaneous frequency ω(t) by the autonomous and mutual (i.e., using the reference signal) Wigner–Ville transform. It is shown that the estimation of the frequency ω(t) by the autonomous Wigner–Ville transform depends on the type of nonlinearity of the function ω(t) to a greater degree and on its time-variation rate to a lesser degree. The mechanism of increasing the frequency-time resolution of the mutual Wigner–Ville transform due to using the matched signal is described and the method for measuring the instantaneous frequency and the phase, which is based on revealing the character of modulation of the real and imaginary parts of the mutual power Pmut(t, ω) determined by the reference oscillation, is considered. Stability of the mutual Wigner–Ville transform with respect to normal white noise is estimated.
      PubDate: 2015-07-01
       
  • Illumination of the Air Environment Using Radiation of HF Broadcast
           Stations
    • Abstract: We consider the possibility of using illumination of the HF broadcast stations for location of air objects. The relationships for estimation of the detection range are obtained and requirements for the degree of suppression of a direct signal from the broadcast station are determined. Spectral characteristics of the signals from HF broadcast stations are studied experimentally for different polarizations of the received radiation. The possibility of air object detection using the Doppler effect is shown. Theoretical estimates of the radar cross section of air objects for different polarizations of the incident radiation are given. It is found experimentally that the radar cross section is about the same for the vertical and horizontal polarizations.
      PubDate: 2015-07-01
       
  • Boundary Condition for a Nonstationary Horizontal Ionospheric Current at
           the Terminator with Allowance for Flowing of a Part of the Current into
           the Upper Ionosphere and Magnetosphere
    • Abstract: We consider the boundary condition for horizontal ionospheric currents at the terminator with allowance for the possibility of flowing of a part of the current into the upper ionosphere and magnetosphere. Theoretical models of extremely low frequency field propagation presented in the literature assume that the horizontal ionospheric current component orthogonal to the terminator is continuous at the terminator. A well-known boundary condition for Alfvén waves in a horizontally inhomogeneous ionosphere is used as the basis for theoretical constructs.
      PubDate: 2015-07-01
       
  • Weight Vector Fluctuations in Adaptive Antenna Arrays Tuned Using the
           Least-Mean-Square Error Algorithm with Quadratic Constraint
    • Abstract: We present the results of statistical analysis of an adaptive antenna array tuned using the least-mean-square error algorithm with quadratic constraint on the useful-signal amplification with allowance for the weight-coefficient fluctuations. Using the perturbation theory, the expressions for the correlation function and power of the output signal of the adaptive antenna array, as well as the formula for the weight-vector covariance matrix are obtained in the first approximation. The fluctuations are shown to lead to the signal distortions at the antenna-array output. The weight-coefficient fluctuations result in the appearance of additional terms in the statistical characteristics of the antenna array. It is also shown that the weight-vector fluctuations are isotropic, i.e., identical in all directions of the weight-coefficient space.
      PubDate: 2015-07-01
       
  • Saw-Tooth Acoustic Waves in Media with Hysteresis Nonlinearity
    • Abstract: We study propagation of periodic saw-tooth waves in nondispersive media with quadratic elastic and hysteresis nonlinearity. By comparing exact solutions for saw-tooth waves and their spectral characteristics, we identified regularities in the behavior of nonlinear acoustic effects in such media. It is shown that as distinct from the case of a medium with quadratic elastic nonlinearity, the effects of nonlinear dispersion can manifest themselves in hysteresis media.
      PubDate: 2015-07-01
       
  • Estimation of the Number of Radio Signals with Unknown Amplitudes and
           Phases
    • Abstract: Some algorithms for estimating the number of radio signals with known and unknown amplitudes and phases are synthesized and analyzed. Modified maximum-likelihood algorithms are used to obtain consistent algorithms for estimating the number of radio signals in the case of unknown amplitudes and phases. Efficiency of the estimation algorithms is quantitatively characterized by the abridged probability of the signal-number estimation error. The studied-algorithm parameters are optimized according to the analysis results.
      PubDate: 2015-07-01
       
  • Modeling of Microwave Reflection from the Surface of Water Basins with
           Spills of Water-Cut Oil
    • Abstract: We consider specific features of reflection of microwaves from the surface of a water basin for the two-layer model of oil spills, which are determined by a water-cut-oil film. Within the spill model, the dielectric properties of water were allowed for in accordance with the Debye theory, and the dielectric properties of the water-cut oil, in accordance with the theory developed for binary systems. The data about variations in the values of reflection coefficients depending on the frequency, viewing angle, thickness of the oil film, and moisture content in the film are obtained. The dependences of reflection coefficients on the film thickness are determined for various values of volume content of the water fraction in oil. Complex values of the dielectric permittivity of oil-water emulsions with preset volume moisture content are found. Describing the obtained dependences of the complex dielectric permittivity of the emulsion on the volume moisture content requires application of asymmetrical formulas for the mixture of polar and nonpolar fluids.
      PubDate: 2015-07-01
       
  • Pulse-Periodic Regime of Kinetic Instability of the ECR Discharge Plasma
           Under the Conditions of Double Plasma Resonance
    • Abstract: We study the stability of a dense nonequilibrium plasma of the electron cyclotron resonance (ECR) discharge in an open magnetic trap immediately after the end of heating. The observed instability is accompanied by pulse-periodic generation of high-power electromagnetic radiation at a frequency that is close to the frequency of the upper hybrid resonance and the double gyrofrequency of electrons and by synchronous precipitations of fast electrons from the trap. It is shown that the observed instability is connected with excitation of plasma waves under the conditions of double plasma resonance in the decaying plasma of the ECR discharge.
      PubDate: 2015-05-26
       
  • An Efficient Algorithm for Joint Evaluation of the Time Delay and
           Frequency Shift of the Frequency-Modulated Signals
    • Abstract: We consider a modification of the method for determining the mutual time delays of signals on the basis of the joint measurement of the time and frequency shifts. The modification allows one to increase the degree of manifestation of the correlation maximum for the frequency-modulated signals. The results of studying the proposed algorithm during processing of the phase- and frequency-modulated signals under the conditions of a priori uncertainty with respect to the carrier frequency of the signals are presented.
      PubDate: 2015-05-19
       
  • Structure-Sensitive Maxima in the Absorption Spectra of Polymers in the
           Terahertz Frequency Range
    • Abstract: The basic sizes characterizing the morphology of a few practically important synthetic organic polymers in the glassy and viscoelastic states are confronted with the maxima of the absorption spectra in the terahertz frequency range. These sizes are determined using the X-ray diffraction technique. The absorption spectra of these polymers have been measured by the method of terahertz time-domain spectroscopy in the temperature range from helium to room temperatures.
      PubDate: 2015-05-19
       
  • The Features of Refraction of Electromagnetic Waves Near the Electron
           Cyclotron Resonance Surface in an Open Magnetic Trap
    • Abstract: Some features of the electromagnetic wave propagation near the electron cyclotron resonance region in axisymmetric magnetic traps are studied both analytically and numerically. The ray paths are obtained with allowance for the plasma density inhomogeneities, magnetic field direction, and magnetic field strength. Criteria for the limiting cases of constructive refraction (the ray paths are attracted to the trap axis, where effective absorption takes place) and destructive refraction (the ray paths are expelled from the trap axis, and efficient heating of the central part of the plasma column is not possible) are found. It is shown that the inhomogeneities of the magnetic field direction and plasma density, which are typical of axisymmetric magnetic traps, as well as the spatial dispersion effects, can strongly affect the electromagnetic wave propagation near the electron cyclotron resonance surface.
      PubDate: 2015-05-19
       
  • Description of the Spectrum of Natural Noise in Semiconductor Diodes Based
           on the Modified Van Der Ziel Relation
    • Abstract: In this work, we study the spectrum S iD of natural (thermal and shot) current noise of the p-n junction and the Schottky barrier in the case where their current-voltage characteristic has a nonideality coefficient η exceeding unity. The results obtained with the help of a special experimental setup are presented and explained using an equivalent scheme, which takes into account the presence of the series resistance of the diode base and contacts, as well as the possibility of existence of the leakage current. It is theoretically proven and experimentally confirmed that the van der Ziel relation S iD = 2q (I D + 2I s), which is used for calculating the current-noise spectrum of an “ideal” junction with η = 1, cannot be used for η > 1 (here, q is the elementary charge, I D is the current across the junction, and I s is the junction saturation current). The previously obtained results are generalized using the Gupta theorem for the thermal-noise spectrum in the nonlinear resistive systems and are confirmed experimentally. It is found that the noise-current spectrum is given by the formula S iD = (2q/η) (I D + 2I s), which is a modification of the van der Ziel relation for the case of an arbitrary value of the nonideality coefficient. The obtained formula for S iD is experimentally tested by measuring the noise spectrum of the δ-doped Schottky diode, which is in thermodynamic equilibrium with the surrounding medium.
      PubDate: 2015-05-19
       
 
 
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