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To promote awareness, understanding, advancement and application of ocean engineering and marine technology. This includes all aspects of science, engineering, and technology that address research, development, and operations pertaining to all bodies of water. This includes the creation of new capabilities and technologies from concept design through prototypes, testing, and operational systems to sense, explore, understand, develop, use, and responsibly manage natural resources.
2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)
Ferroelectric materials and applications
2020 IEEE Energy Conversion Congress and Exposition (ECCE)
IEEE-ECCE 2020 brings together practicing engineers, researchers, entrepreneurs and other professionals for interactive and multi-disciplinary discussions on the latest advances in energy conversion technologies. The Conference provides a unique platform for promoting your organization.
Energy conversion and conditioning technologies, power electronics, adjustable speed drives and their applications, power electronics for smarter grid, energy efficiency,technologies for sustainable energy systems, converters and power supplies
The Annual IEEE PES General Meeting will bring together over 2900 attendees for technical sessions, administrative sessions, super sessions, poster sessions, student programs, awards ceremonies, committee meetings, tutorials and more
The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.
The Transactions on Biomedical Circuits and Systems addresses areas at the crossroads of Circuits and Systems and Life Sciences. The main emphasis is on microelectronic issues in a wide range of applications found in life sciences, physical sciences and engineering. The primary goal of the journal is to bridge the unique scientific and technical activities of the Circuits and Systems ...
Serves as a compendium for papers on the technological advances in control engineering and as an archival publication which will bridge the gap between theory and practice. Papers will highlight the latest knowledge, exploratory developments, and practical applications in all aspects of the technology needed to implement control systems from analysis and design through simulation and hardware.
Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.
Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronic devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.
2018 International Conference on Actual Problems of Electron Devices Engineering (APEDE), 2018
Fluctuations in electrochemical systems strongly depend on the electrochemical processes taking place therein; therefore study of fluctuation phenomena becomes important for diagnostics of such type of systems. In the framework of this paper, the experimental data obtained during the discharge of the Li-Ion battery (ICR 18650) with nominal voltage of 3,6 V and capacity 2,6 A.h are analyzed. The measurements ...
28th Annual Symposium on Frequency Control, 1974
IEEE Journal of Quantum Electronics, 1966
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1998
We discuss effects on the propagation of surface acoustic waves (SAW) due to heavy mass loading on Y-cut lithium niobate and lithium tantalate substrates. An abrupt reduction in the leaky-SAW (LSAW) attenuation is observed in the measured admittance of a long resonator test structure on 64/spl deg/-YX-cut lithium niobate for aluminum electrodes of thickness h//spl lambda//sub 0/ beyond 9-10%. This ...
CLEO/Europe Conference on Lasers and Electro-Optics, 1998
Fluctuations in electrochemical systems strongly depend on the electrochemical processes taking place therein; therefore study of fluctuation phenomena becomes important for diagnostics of such type of systems. In the framework of this paper, the experimental data obtained during the discharge of the Li-Ion battery (ICR 18650) with nominal voltage of 3,6 V and capacity 2,6 A.h are analyzed. The measurements were carried out in open-circuit conditions for different battery state-of-charge. Fluctuations in open-circuit conditions comprise new information that allows enhancing the diagnostic properties of electrical fluctuations. The corresponding properties can be used as a basis for efficient diagnostic systems of lithium batteries. The possibility of analysis in the in open-circuit conditions makes it possible to realize non- destructive testing of batteries without changing their actual technical state and include primary batteries into the scope of application.
We discuss effects on the propagation of surface acoustic waves (SAW) due to heavy mass loading on Y-cut lithium niobate and lithium tantalate substrates. An abrupt reduction in the leaky-SAW (LSAW) attenuation is observed in the measured admittance of a long resonator test structure on 64/spl deg/-YX-cut lithium niobate for aluminum electrodes of thickness h//spl lambda//sub 0/ beyond 9-10%. This experimental fact is explained theoretically as the slowing down of the leaky wave below the velocity of the slow shear surface-skimming bulk wave (SSBW), such that energy dissipation into bulk-wave emission becomes inhibited. An infinite transducer structure is modeled using the periodic Green's function and the boundary-element method (BEM); the computed theoretical properties well explain for the experimental findings. The model is further employed to quantify the leaky surface-wave attenuation characteristics as functions of the crystal-cut angle and the thickness of the electrodes. The resonance and antiresonance frequencies and the corresponding Q values are investigated to facilitate the selection of crystal cuts and electrode thicknesses. The transformation of the leaky SAW into a SAW-type nonleaky wave is also predicted to occur for gold electrodes, with considerably thinner finger structures.
There was a time when budding inventors were advised to build a better mousetrap. Nowadays, they'd do rather well to build a better lithiumion battery. These are what power our phones, laptops, portable power tools, an increasing number of cars, even homes. Some places are turning to giant lithium-ion batteries to store energy from solar panels so that it can be used after dark. While lithium-ion cells have gotten incrementally better over the years, they seem set for a big boost in 2019 through the increased use of an element not unfamiliar to the electronics industry: silicon.
In recent years, electric vehicles have become more and more popular. Lithium batteries are widely used in electric vehicles (EVs) because Lithium batteries have excellent performance. However, after several charge and discharge of a lithium battery, different monomers in series will have different performance. This paper proposes a equalization circuit based on the bidirectional DC-AC converter. The circuit topology of this paper has the advantages of high speed and high equalization efficiency, and it can transfer energy between non- adjacent batteries.
The pseudo-SAW (PSAW) characteristics of sputtered glass films on substrates of 41/spl deg/ and 64/spl deg/ Y-X lithium niobate (LiNbO/sub 3/) and 36/spl deg/ Y-X lithium tantalate (LiTaO/sub 3/) have been measured from 30 MHz to above 1.0 GHz. Glass films in the 500 nm to 2000 nm thickness range were deposited by RF diode sputtering. Using suitably located thin-film aluminum interdigital electrode patterns at the film surface and interface, the PSAW velocity, propagation loss, resonator capacitance ratio (C/sub m//C/sub o/), and temperature coefficient of frequency (TCF), were measured. The properties of these layered structures were simulated using the matrix method including layer viscosity. The glass film material was assumed isotropic with finite viscosity (frequency dependent stiffness) in the simulations, whereas the substrates were assumed to have zero viscosity. The frequency dependent measurements and theory were well correlated. The theoretical results were sensitive to the choice of material constants, both film and substrate. The propagation loss was dominated by leaky-wave loss and the inclusion of film viscosity did not substantially alter the propagation loss properties.
To obtain the zero resonant-temperature coefficient of piezoelectric resonators, a method is presented in which a series capacitance alters both the effective value and the temperature behavior of the electromechanical coupling factor. This method is applied to a lithium niobate resonator and avails to obtain the zero temperature coefficient of the frequency.
Dispersion curves for 128 Lithium Niobate, YZ Lithium Niobate, 42 Lithium Tantalate, STX Quartz, STX+25 Quartz, ATX Quartz, and LGS crystals are calculated with modified Hasimoto's program. Dependences of obtained COM parameters on the electrode width and thickness are approximated by polynomials and used for calculations of admittance of transducer and frequency response of surface acoustic wave device by P matrix technique. The modified soft allows to calculate any substrates, including ones with low electromechanical coupling coefficients, those are very difficult or even impossible for calculation by means of other known tools.