Results 21 to 30 of about 14,589 (218)

Fractal-Shaped Metamaterials and Applications to Enhanced-Performance Devices Exhibiting High Selectivity

open access: yesInternational Journal of Antennas and Propagation, 2012
Novel single negative metamaterial (MTM) transmission lines (TLs) are presented and studied in microstrip technology.
He-Xiu Xu   +2 more
doaj   +1 more source

Finite element analysis of displacement actuator based on giant magnetostrictive thin film

open access: yesAIP Advances, 2018
With the rapid development of science and technology, mechanical and electrical equipment become more and more miniature. In order to achieve precise control in less than 1cm3, the giant magnetostrictive thin film has become a research hotspot. The micro
Shaopeng Yu   +3 more
doaj   +1 more source

On the m-CAP Performance with Different Pulse Shaping Filters Parameters for Visible Light Communications

open access: yesIEEE Photonics Journal, 2017
In pulse shaping filters, parameters such as the roll-off factor and the symbol span, which determine the overall performance, are of great importance when implementing a real-time system due to limited hardware resources.
Petr Chvojka   +7 more
doaj   +1 more source

The Structure of an Electromagnetic Field [PDF]

open access: yesProceedings of the National Academy of Sciences, 1918
This elementary field corresponds to a state of affairs in which electric charges of a concentrated form are created and travel along straight lines with the velocity of light, the directions of these lines being specified by the different values of the unit vector s.
openaire   +2 more sources

Broadband Dual-Polarized Magnetoelectric Dipole Antenna With Compact Structure for 5G Base Station

open access: yesIEEE Access, 2023
This paper presents a compact wideband dual-polarized magnetoelectric dipole antenna suitable for 5G base stations, which can cover 5G NR n77/78/79 band.
Shihao Wu, Feng Shang
doaj   +1 more source

Coupling Theory of Emergent Spin Electromagnetic Field and Electromagnetic Field [PDF]

open access: yesJournal of the Physical Society of Japan, 2014
In ferromagnetic metals, an effective electromagnetic field which couples to conduction electron spin is induced by the sd exchange interaction. We investigate how this effective field, spin electromagnetic field, interacts with the ordinary electromagnetic field by deriving an effective Hamiltonian based on the path-integral formalism.
Kawaguchi, Hideo, Tatara, Gen
openaire   +2 more sources

Reliability growth prediction of mine-used low-voltage switchgear

open access: yesGong-kuang zidonghua, 2015
A mine low-voltage switchgear was taken as object to study its reliability growth process in the commissioning phase in underground coal mine. It was clarified that number of mine-used low-voltage switchgear failure occurrence accompanied with repair ...
XIA Haoxuan   +4 more
doaj   +1 more source

Platform Tolerant, High Encoding Capacity Dipole Array-Plate Chipless RFID Tags

open access: yesIEEE Access, 2019
In this paper, we first carry out an in-depth review of the performance parameters of frequencydomain chipless RFID transponders in terms of their spatial density, spectral capacity, and comprehensive encoding capacity (bit/λ2/GHz) comprising both
Milan Svanda   +4 more
doaj   +1 more source

Analysis of Capacitive Wireless Power Transfer

open access: yesIEEE Access, 2019
The analysis of capacitive wireless power transfer was conducted in a general manner. The circuit model of a capacitive wireless power transfer chain was presented.
Jan Kracek, Milan Svanda
doaj   +1 more source

Design and Performance Analysis of Permanent Magnet Claw Pole Machine with Hybrid Cores

open access: yesCES Transactions on Electrical Machines and Systems, 2023
Permanent magnet claw pole machine (PMCPM) is a special kind of transverse flux permanent magnet machine. Compared with other electrical machines, it has the advantages of high torque density and high efficiency for high speed operation. However, because
Chengcheng Liu   +3 more
doaj   +1 more source

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