Results 51 to 60 of about 647,166 (124)
Upper bounds on absorption and scattering
New Journal of Physics, 2020 A general framework for determining fundamental bounds in nanophotonics is introduced in this paper. The theory is based on convex optimization of dual problems constructed from operators generated by electromagnetic integral equations.
Mats Gustafsson +3 more
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A novel thyristor‐based hybrid DC circuit breaker with short arcing capability
High VoltageMulti‐terminal flexible high‐voltage direct current (HVDC) transmission and DC grid technology are developing rapidly. The hybrid DC circuit breaker (HCB) has broad application prospects in the field of HVDC transmission and DC power grid.
Guanlong Jia +4 more
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Advances in Mechanical Engineering, 2017 In this article, the reliability assessment and management of low-voltage switchgear was introduced based on a hierarchical Markov model. First, the reliability block diagram of motor control center was established by actual circuit.
Jingqin Wang +3 more
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Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks
IEEE Photonics Journal, 2019 In this paper, a hybrid free-space optical and visible light communication (FSO/VLC) system was experimentally demonstrated as a solution to overcome the last mile and last meter access networks bandwidth bottleneck. We evaluate the system performance of
Petr Pesek +4 more
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Design of One-Eighth Spherical Dielectric Resonator Antenna for 5G Applications
IEEE Access, 2020 A one-eighth spherical surface dielectric resonator antenna (OESS-DRA) is proposed first time. To analyze this thin shell structure, electromagnetic fields distribution is discussed by using the Hertz vector and boundary conditions.
Zhiwei Song +4 more
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IEEE Access, 2020 In this paper, we numerically and experimentally present the bandwidth constraints of a cost-effective 5G mobile fronthaul based on a directly-modulated laser for data modulation and a Mach-Zehnder modulator-based optical double sideband with carrier ...
Luis Vallejo +5 more
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International Journal of Antennas and Propagation, 2014 The recently introduced coupled shorted-patches technique for the design of extremely low-profile UHF RFID tag antennas is used to illustrate the flexibility of selected feeding methods for tuning the antenna input impedance for the complex values ...
Milan Svanda, Milan Polivka
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IEEE Open Journal of Antennas and PropagationThis paper describes a compact circularly polarized antenna designed for the 2.4GHz band with a gain of 15dBic designed for communication (uplink) with a geostationary amateur radio satellite Es’Hail-2 (QO-100).
Michal Cerveny, Pavel Hazdra
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International Journal of Antennas and Propagation, 2015 Seasonal variations of the polarization diversity gain are addressed for a nomadic user in a vegetated area taking high elevation angles and nongeostationary satellites into consideration. Corresponding experimental data were obtained at a frequency of 2.
Milan Kvicera, Pavel Pechac
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How to move an electromagnetic field? [PDF]
, 2011 As a first principle, it is the basic assumption of the standard relativistic formulation of classical electrodynamics (ED) that the physical laws describing the electromagnetic phenomena satisfy the relativity principle (RP).
Gomori, Marton, Szabo, Laszlo E.
core +2 more sources