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  Subjects -> ELECTRONICS (Total: 152 journals)
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 1)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 5)
Advances in Microelectronic Engineering     Open Access   (Followers: 1)
Advances in Power Electronics     Open Access   (Followers: 8)
Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 59)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 10)
Annals of Telecommunications     Hybrid Journal   (Followers: 4)
APL : Organic Electronics and Photonics     Hybrid Journal   (Followers: 2)
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: 8)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 15)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Biomedical Instrumentation & Technology     Full-text available via subscription   (Followers: 4)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 5)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 1)
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: 2)
Circuits and Systems     Open Access   (Followers: 9)
Consumer Electronics Times     Open Access   (Followers: 4)
Control Systems     Hybrid Journal   (Followers: 21)
Electronic Markets     Hybrid Journal   (Followers: 6)
Electronic Materials Letters     Hybrid Journal   (Followers: 3)
Electronics     Open Access   (Followers: 7)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 5)
Electronics Letters     Hybrid Journal   (Followers: 17)
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 18)
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: 8)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Foundations and TrendsĀ® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Foundations and TrendsĀ® in Signal Processing     Full-text available via subscription   (Followers: 4)
Frequenz     Full-text available via subscription   (Followers: 2)
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: 4)
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 14)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 13)
IEEE Consumer Electronics Magazine     Full-text available via subscription   (Followers: 11)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 9)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 2)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 5)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 10)
IEEE Transactions on Audio, Speech, and Language Processing     Hybrid Journal   (Followers: 11)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 22)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 13)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 6)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 13)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 15)
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: 7)
IET Power Electronics     Hybrid Journal   (Followers: 7)
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 6)
IETE Journal of Education     Open Access   (Followers: 2)
IETE Journal of Research     Open Access   (Followers: 8)
IETE Technical Review     Open Access   (Followers: 3)
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 11)
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 5)
Informatik-Spektrum     Hybrid Journal  
Instabilities in Silicon Devices     Full-text available via subscription  
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 1)
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: 11)
International Journal of Antennas and Propagation     Open Access   (Followers: 8)
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: 12)
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   (Followers: 1)
International Journal of Numerical Modelling:Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 2)
International Journal of Power Electronics     Hybrid Journal   (Followers: 4)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 2)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 2)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 2)
International Journal on Communication     Full-text available via subscription   (Followers: 8)
International Journal on Electrical and Power Engineering     Full-text available via subscription   (Followers: 11)
International Transaction of Electrical and Computer Engineers System     Open Access  
ISRN Electronics     Open Access   (Followers: 1)
ISRN Signal Processing     Open Access  
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 Electrical and Electronics Engineering Research     Open Access   (Followers: 2)
Journal of Electrical Bioimpedance     Full-text available via subscription   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Full-text available via subscription   (Followers: 1)
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 4)

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Journal Cover Radiophysics and Quantum Electronics     [SJR: 0.274]   [H-I: 8]
   [4 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  [2210 journals]
  • Numerical Simulation of the Influence of the may 2–3, 2010
           Geomagnetic Storm on HF Radio-Wave Propagation in the Ionosphere
    • Abstract: This study is devoted to HF radio wave propagation in the ionosphere during the May 1–3, 2010 geomagnetic storm. The research results were obtained by using two models, namely, the GSM TIP environment model developed at WD IZMIRAN and the radio-wave propagation model developed at I. Kant BFU. For certain selected frequencies we show the effect of the geomagnetic storm on the radio wave propagation. We give examples of a HF radio-wave path in the channels between the F1 and F2 layers of a high-latitude ionosphere and the F2 and F3 layers of a lowlatitude ionosphere. Characteristics of these layers may significantly affect the interpretation of the oblique sounding ionograms.
      PubDate: 2014-12-05
  • Development of Waveguide Semiconductor Switches of Microwave Radiation in
           the 70- and 260-ghz Ranges
    • Abstract: We have developed, manufactured, and studied experimentally prototypes of microwave switches operated in the 70- and 260-GHz frequency ranges and controlled by pulses of optical laser radiation. The results of their numerical simulation by the finite-difference time-domain (FDTD) method are presented, along with the design parameters of the prototypes. The switch speed is equal to 1 ns, and the microwave tuning frequency range amounts to about 10%. The process of switching with the use of a low-cost semiconductor optical laser (with a wavelength of 532 nm and a continuous-wave power of 200 MW) is demonstrated experimentally at a switched-radiation frequency of 266.68 GHz.
      PubDate: 2014-12-05
  • Automated Construction of the Basic Dynamic Models of the Atmospheric
           Photochemical Systems Using the RADM2 Chemical Mechanism as an Example
    • Abstract: The method of automated construction of the basic dynamic models, i.e., mathematically correctly simplified models using a minimum possible set of the dynamic variables, which is necessary for correct description of the spatiotemporal behavior of the atmospheric photochemical systems, is developed. The proposed method is based on numerical search for all the chemical components rapidly evolving near their equilibrium states and sorting out slow families among them, whose characteristic lifetimes turn out to be much longer compared with those of their components. The method is applied to the RADM2 chemical mechanism which is used for simulating air contamination in urbanized regions. This allowed us to find almost thirty fast variables of the above-mentioned system, single out three intersecting slow families and reduce the dimension of the corresponding basic dynamic model more than twice. It is shown that the constructed model well reproduces (both qualitatively and quantitatively) the calculated results, which are obtained using the reference full-scale model, and can be used for both direct simulation of the air quality in the atmospheric boundary layer with allowance for the actual transfer processes and retrieval of information on the tropospheric chemical substances from the available observation data bases.
      PubDate: 2014-12-05
  • Excitation of High-Q Whispering Gallery Modes in a Hemispherical Shielded
           Dielectric Cavity Using a Slot Transmission Line
    • Abstract: We studied experimentally the electrodynamic characteristics of a hemispherical shielded dielectric cavity in the 8-mm wavelength range. The use of a slot transmission line is proposed to excite whispering gallery modes in such a cavity. It was found that the proposed excitation method is efficient and allows one to generate high-Q higher modes in a shielded dielectric cavity introducing no additional energy losses. It was shown experimentally that the achieved intrinsic Q-factor of the cavity under consideration can exceed the threshold values limited by the dissipative losses in its material. This effect is determined by the shift of the resonance field to the air gap between the metal and dielectric elements of the cavity. Agreement of the calculated and experimental data is demonstrated.
      PubDate: 2014-12-05
  • Underwater Acoustic Altimeter
    • Abstract: A model for determining the reflected-pulse shape during vertical sounding of the sea surface by an underwater ultrasonic sonar with a wide antenna pattern is developed. The reflected-pulse shape dependence on the parameters of an underwater acoustic altimeter and the measurement schemes is studied. The wave-height retrieval algorithm whose input parameter is the reflectedpulse leading-edge duration is developed. The algorithm efficiency is confirmed by numerical simulation. The obtained formula for the wave height involves the coefficients which depend on many characteristics among which the submersion depth, the beamwidth, and the soundingpulse duration are the main parameters. Therefore, the formula should be specified according to variations in the measurement scheme and the acoustic-system parameters.
      PubDate: 2014-12-05
  • Study of the Possibility to Switch the TE 01 Mode of a Circular Waveguide
           Using the Multipactor Discharge in Crossed Fields
    • Abstract: We demonstrate experimentally that it is possible to control the symmetric TE01 mode of a circular waveguide, whose microwave electric field is equal to zero at the wall), using the multipactor discharge in the crossed electric and magnetic fields, which is excited by the TM01 mode in a cylindrical cavity. The characteristic time of cavity switching is determined by the cavity Q-factor and is equal to 150–200 ns. The experiments show that the proposed scheme allows reflecting the energy flow of switched radiation almost completely.
      PubDate: 2014-12-05
  • On the Possibility of Detection of Electromagnetic Earthquake Precursors
           with Levels Below the Regular Background Noise
    • Abstract: The problem of seeking electromagnetic earthquake precursors is briefly described. A method for detection of electromagnetic signals with low amplitudes is proposed. This method takes into account specific features in the spatial distribution of the Earth’s natural electromagnetic noise and uses the universal model of an underground magnetic field source. A demonstration experiment on detection of sources on short (about one hundred meters long) interference bases is carried out. Specific features such as the presence of false solutions in the inverse problem are revealed. Criteria for identifying such solutions are described.
      PubDate: 2014-12-05
  • High-Q Quasistatic Resonances Excited in a Metamaterial Sphere by a
           Meridional Dipole
    • Abstract: We consider the rigorous problem of excitation of a metamaterial sphere by a meridionally directed electric dipole. High Q-resonances in the low-frequency region are found and studied. The existence conditions of these resonances are established. Frequency-amplitude characteristics of the sphere and the vector scattering patterns at resonant frequencies are calculated. Approximate analytical expressions for resonant frequencies are obtained. The effect of nonresonance field enhancement, which consists in that the scattered field exceeds the primary field in a wide frequency range, is found.
      PubDate: 2014-11-19
  • Studies of a Gyrotron with the Echelette Cavity
    • Abstract: We describe a gyrotron which is operated at the first gyrofrequency harmonic and has an echelette cavity with the sinusoidal corrugation profile. A method for calculating the parameters of the echelette cavity and the gyrotron is described. The results of measuring the electrodynamic characteristics of the echelette cavity and studying experimentally the gyrotron with such a cavity are presented. It is shown that the gyrotron has a rarefied spectrum of eigenoscillations and the efficiency at the level of typical megawatt-power gyrotrons, and is characterized by a significantly lower degree of cavity wall heating. The structure of radiation from the gyrotron with the echelette cavity and the possibility of transmitting this radiation by means of a mirror waveguide, are discussed.
      PubDate: 2014-11-19
  • Features of Superlong-Distance and Round-the-World Propagation of HF Waves
    • Abstract: We present the results of the experimental studies of the features of superlong-distance and round-the-world propagation of the HF waves in the radio lines with different orientation and length, which were obtained in 2012–2014 using a new method of oblique ionospheric sounding. The frequency–time travel intervals of the direct round-the-world signals, their amplitude-frequency and angular-frequency characteristics are determined. The mechanism of propagation and transformation of the round-the-world signals due to the radio-wave refraction by the transverse electron-density gradients in the region of approach of two optimal paths passing via the transmitter and receiver so that each path forms the smallest angle with the terminator. It is shown that the proposed mechanism is in good agreement with the experimentally observed variation of the azimuth of the direct round-the-world signal on the Cyprus–Rostov-on-Don path and on the Alice Springs (Australia)–Rostov-on-Don path in the absence of variation of the direct round-the-world signal azimuth. For the superlong-distance propagation of the HF waves on the Virginia (USA)–Yoshkar-Ola and Puerto Rico–Yoshkar-Ola (the distances about 8000–10000 km) paths, the best propagation conditions are observed when the entire path is in the illuminated ionosphere near the terminator boundary making a small angle of 10°–25° with the terminator.
      PubDate: 2014-11-18
  • Generation of Artificial Ionospheric Irregularities in the Midlatitude
           Ionosphere Modified by High-Power High-Frequency X-Mode Radio Waves
    • Abstract: We consider the properties of the artificial ionospheric irregularities excited in the ionospheric F 2 region modified by high-power high-frequency X-mode radio waves. It is shown that small-scale (decameter) irregularities are not generated in the midlatitude ionosphere. The intensity of irregularities with the scales l ⊥ ≈50 m to 3 km is severalfold weaker compared with the case where the irregularities are excited by high-power O-mode radio waves. The intensity of the larger-scale irregularities is even stronger attenuated. It is found that the generation of large-scale (l ⊥ ≈5–10 km) artificial ionospheric irregularities is enhanced at the edge of the directivity pattern of a beam of high-power radio waves.
      PubDate: 2014-11-18
  • Analysis of the Temporal Structural Function of Tropospheric Delay of
           Radio Waves Using Radio Measurements of the Signals from Global Navigation
           Satellite Systems
    • Abstract: We present the results of a three-year experimental study of propagation of decimeter radio waves in the troposphere. The time analysis of the structural function of tropospheric delay of the decimeter radio waves for the three-year measurements of the GLONASS and GPS signals in a city of Kazan is given. The tropospheric contribution to the variance of the decimeter radio-wave delay is for the first time observed to significantly differ for the variations with time scales 1 to 24 h.
      PubDate: 2014-11-18
  • Determination of the Difference of the Distances to a Moving Object in the
           Forward-Scatter Radar Systems with Diversity Reception
    • Abstract: We consider a method for determining the difference of the distances from the receiving antennas to a moving object in the systems based on the observation of a forward-scattered field. The method can be used for determining the object location in the forward-scatter radars with several receivers.
      PubDate: 2014-11-18
  • Dynamics of a Single-Mode Semiconductor Laser with Incoherent Optical
    • Abstract: A new model of an injection semiconductor laser with optical feedback, which generalizes the Lang–Kobayashi equations to the case of incoherent feedback, is proposed. Within the framework of this model, the above-mentioned equations are supplemented by the stochastic variable, which simulates the random phase difference between the field inside the resonator and the field returning to the laser after travelling over the feedback loop. It is shown that transition from coherent to incoherent feedback in the case of weak feedback results in the replacement of dynamic chaos by almost stationary lasing with a slightly noisy intensity. However, a much stronger incoherent feedback can lead to chaotic oscillations. The proposed model has both noise and deterministic solutions, which indicates the impossibility to develop a purely dynamical model of a semiconductor laser with incoherent optical feedback.
      PubDate: 2014-10-30
  • Influence of a Burst of VLF Radiation on Precipitation of Electrons from
           the Radiation Belt
    • Abstract: We develop the method for evaluation of the influence of a pulse source of VLF radiation on the flux density of electrons precipitating from the radiation belt of the Earth on the basis of the quasilinear theory of resonant interaction of waves and particles in plasma traps.
      PubDate: 2014-10-24
  • Diffraction of a Cylindrical Wave by a Metamaterial Elliptic Cylinder
    • Abstract: Within the framework of two-dimensional geometry, we consider the properties of the electromagnetic fields excited by a filament source which is located near the surface of an elliptic cylinder, The cylinder is made of a metamaterial whose dielectric permittivity and magnetic permeability are equal to minus unity. The influence of the cylinder shape and the position of the source on the effects of subwavelength localization and nonresonance field enhancement is studied.
      PubDate: 2014-10-24
  • On the Impact of Eddy Motions in the Mesosphere and Lower Thermosphere on
           the Evolution of the Signal Scattered by Artificial Periodic
    • Abstract: The main objective of this study is experimental diagnostics of eddy ordered structures at the altitudes of the mesosphere and upper thermosphere, such as those that occur when internal gravity waves propagate in stratified flows in the atmospheric boundary layer. To this end, we consider the impact of eddy motions in the mesosphere and lower thermosphere during relaxation of the signal scattered by periodic irregularities. The irregularities are created by a standing wave when the ionosphere is heated by high-power HF radio waves. A model of a uniform eddy with sizes exceeding the scattering volume is used. A relation between the eddy period and the characteristic time of relaxation of scattered signal, for which the synchronism of the waves scattered by a periodic structure is broken, is found. This, in turn, decreases the amplitude of the scattered signal and its relaxation time. Experimental data on atmospheric turbulence obtained by the resonant scattering technique are presented.
      PubDate: 2014-10-24
  • Determination of the Solar-Wind Velocity, Density, Power, and Acceleration
           by the Method of Radio Sounding of the Near-Solar Plasma by the Spacecraft
    • Abstract: Different approaches for determining the velocity and density of a near-solar plasma by the radio-sounding method using high-stability signals from spacecraft are analyzed. The results of studying the solar-wind characteristics at heliocentric distances of 3–50 solar radii are presented. Experimental results on the plasma velocity, density, power, and acceleration for specified distances are given.
      PubDate: 2014-10-24
  • Ionospheric Effects of the X-Ray Flares of September 24, 2011 According to
           Oblique Sounding Data
    • Abstract: We present the results of observations of a sudden wideband attenuation of short radio waves and Doppler-shift variations of the signals from broadcast stations on oblique sounding paths in the Eurasian longitudinal sector during a series of X-ray flares that occurred on September 24, 2011. The results of modeling of the electron-density profiles in the lower ionosphere based on measurements of attenuation of short waves on the Moscow—Rostov-on-Don path at a frequency of 9996 kHz of the standard-time RWM station during the most powerful flare that occurred on September 24, 2011 at 09:40 UT are given.
      PubDate: 2014-10-24
  • Peculiarities of Operation of a Relativistic Backward-Wave Oscillator
           Driven by an External Electromagnetic Signal
    • Abstract: We study operation of a relativistic backward-wave oscillator driven by an external electromagnetic signal. Such operation regimes as hard excitation of self-oscillations and amplification of the external signal are implemented experimentally. The conditions for possible synchronization of the relativistic backward-wave oscillator by an external signal is discussed. The possibility of accelerating the onset of oscillations by the action of an external signal is confirmed experimentally. The conditions of realization of the amplification regime and the main effects, which limit the amplification coefficient, are determined. The obtained results can be used to optimize the parameters of generators and amplifiers based on relativistic backward-wave oscillators.
      PubDate: 2014-10-24
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