Results 1 to 10 of about 786,550 (336)

Low loss and high performance interconnection between standard single-mode fiber and antiresonant hollow-core fiber

open access: yesScientific Reports, 2021
We demonstrate halving the record-low loss of interconnection between a nested antiresonant nodeless type hollow-core fiber (NANF) and standard single-mode fiber (SMF).
Dmytro Suslov   +9 more
doaj   +1 more source

Standalone photovoltaic and battery microgrid design for rural areas

open access: yesEnergy Exploration & Exploitation, 2022
The remote location and many islands in Africa are experiencing a big power shortage and blackouts and they greatly necessitate electric power from standalone photovoltaic microgri­d. In Rwanda, off-grid solar systems are at their infancy level and their
Cyprien Nsengimana   +3 more
doaj   +1 more source

Deep reflector prime focus feed for space communication

open access: yesThe Journal of Engineering, 2021
In this paper, design of a prime‐focus feed for a deep reflector, Earth–Moon–Earth space communication system is described. The feed is based on a circular waveguide equipped with two chokes in order to minimise sidelobes and illuminate the deep dish ...
Rastislav Galuscak   +4 more
doaj   +1 more source

TORSION AND THE ELECTROMAGNETIC FIELD [PDF]

open access: yesInternational Journal of Modern Physics D, 1999
In the framework of the teleparallel equivalent of general relativity, we study the dynamics of a gravitationally coupled electromagnetic field. It is shown that the electromagnetic field is able not only to couple to torsion, but also, through its energy–momentum tensor, produce torsion.
De Andrade, V. C., Pereira, J. G.
openaire   +3 more sources

Polarization Division Multiplexing-Based Hybrid Microwave Photonic Links for Simultaneous mmW and Sub-6 GHz Wireless Transmissions

open access: yesIEEE Photonics Journal, 2020
A new hybrid microwave photonic link based on a polarization division multiplexing Mach-Zehnder modulator (PDM-MZM) is proposed. The link enables co-transmission of millimeter-wave (mmW) and sub-6 GHz wireless signals over a seamless single-mode fiber ...
Dong-Nhat Nguyen   +7 more
doaj   +1 more source

Transmitters for Combined Radio Over a Fiber and Outdoor Millimeter-Wave System at 25 GHz

open access: yesIEEE Photonics Journal, 2020
In the modern wireless networks, millimeter-wave radio-frequency (RF) bands are becoming more attractive as they provide larger bandwidth and higher data rates than the today-used systems operating at frequencies below 6 GHz.
Jan Bohata   +4 more
doaj   +1 more source

Service States and Reliability Analysis of Low-Voltage Circuit Breaker Overload Protection Considering the Safety Margin

open access: yesApplied Sciences, 2023
The performance of low-voltage circuit breaker overload protection degrades slowly during service, and the service state cannot be simply described as a normal state or a fault state.
Kui Li, Xianfeng Peng, Bokai Hu
doaj   +1 more source

Field Equations in the Complex Quaternion Spaces [PDF]

open access: yes, 2014
The paper aims to adopt the complex quaternion and octonion to formulate the field equations for electromagnetic and gravitational fields. Applying the octonionic representation enables one single definition to combine some physics contents of two fields,
Weng, Zi-Hua
core   +3 more sources

Electromagnetic fields in jets [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2007
8 pages, 5 figures.
Sherwin, B. D., Lynden-Bell, D.
openaire   +2 more sources

Computation of Electromagnetic Field and Complex Materials Interaction [PDF]

open access: yes, 2018
We develop a method to calculate the electromagnetic field distribution in complex materials. The system contains multiple phases with different electrical and magnetic properties and also contains multiple components which can diffuse around to affect ...
Qin, Rongshan
core   +1 more source

Home - About - Disclaimer - Privacy