Results 71 to 80 of about 1,208 (193)

Compressing Electromagnetic Field by Rational Interpolation of the Spherical Wave Expansion Coefficients

open access: yesApplied Computational Electromagnetics Society Journal (ACES)
It is of great significance to obtain the electromagnetic field radiated by an antenna or scattered by an object over a frequency band. But this data often occupies so large a memory that cannot be applied readily. This paper proposes to compress the field based on the spherical harmonic transformation (SHT) and rational interpolation.
Haobo Yuan   +4 more
openaire   +1 more source

Conditionings of population exposure to electromagnetic fields associated with the rational use of 5G radiocommunication networks in Poland

open access: yesMedycyna Pracy, 2019
In 2017, preparations were made in Poland to provide all citizens with access to the Internet at a speed of at least 30 Mb/s, and at a speed of at least 100 Mb/s for 50% of households. This goal is to be realized, among others, by means of the fifth generation (5G) radio-communication networks.
Paweł Bieńkowski   +6 more
openaire   +3 more sources

Proximity efekt na vedeniach nízkoohmových pecí

open access: yes, 2003
The aim of this articles is to demonstrate the using of elementary conductors numerical method for proximity effect solution on the bundle - conductors that create the aupplies to so called low-ohmic electric furnaces.
Novák, Pavel, Pavel Novak
core  

Determination of the rational shift value the center of the magnetic system electromagnetic bearing

open access: yesVestnik of Samara State Technical University. Technical Sciences Series
The article sets the task of determining the rational value of the displacement of the center of the magnetic system of an electromagnetic bearing relative to the axis of rotation, at which, with equal currents in opposite electromagnets, the weight force falling on one axis of the bearing will be completely compensated.
Alexander V. Starikov   +1 more
openaire   +1 more source

PERANCANGAN DAN IMPLEMENTASI RECTENNA (RECTIFIER ANTENNA) UNTUK FREKUENSI 950 MHz [PDF]

open access: yes, 2012
ABSTRAKSI: Dewasa ini perkembangan teknologi begitu pesat. Termasuk semakin banyaknya perangkat teknologi yang bersifat wireless seperti telepon seluler, Radio Frequency Identification (RFID), wireless embedded sensor dll.
FARDAN
core  

REKAYASA PERANGKAT LUNAK PREDIKTOR KINERJA ANTENA TRICULA CHEBYSHEV UNIDIREKSIONAL 300 MHz – 3000 MHz BERBASIS MATLAB [PDF]

open access: yes, 2010
ABSTRAKSI: Salah satu komponen yang penting agar komunikasi radio dapat terbentuk adalah antena. Antena digunakan pada komunikasi radio sebagai pelepas energi elektromagnetik ke ruang propagasi dan sebagai penerima energi elektromagnetik dari ruang ...
I GEDE ARIS PUTRAWAN
core  

Excitation and Propagation of Alfvén Waves in a Helicon Discharge

open access: yes, 2003
An experimental study of shear Alfvén waves in a linearly magnetized plasma is presented. Shear Alfvén waves are electromagnetic waves propagating parallel to the background magnetic field without compression of the plasma at a frequency well below the ...
Grulke, O.   +3 more
core   +1 more source

Adaptive Frequency Sampling Based on Local Rational Modeling for Microwave Electromagnetic Simulations

open access: yesIEEE Transactions on Microwave Theory and Techniques
Performing simulations with electromagnetic (EM) solvers can be a computationally complex task that is time consuming and resource demanding. Adaptive frequency sampling (AFS) techniques are very effective in reducing the computational complexity of frequency-domain simulations performed by EM solvers.
Dries Peumans   +4 more
openaire   +2 more sources

Effect of milling time on the microstructure of NiFe alloy / Lokman Hakim Amran [PDF]

open access: yes, 2010
Nickel-Iron (NiFe) base alloys (permalloy) are commonly used as soft magnetic materials, exhibiting high permeability, low coercivity, low magnetostriction and highsaturation magnetization. This material is often used in electronic industry.
Amran, Lokman Hakim
core  

Numerical Optimization of Multichannel Rx-only RF Coil for Parallel Imaging at 0.07T

open access: yes
The concept of portable ultra-low-field MRI has been actively studied in the past few years. Many approaches focused on using of different software methods for image reconstruction, post-processing and noise reduction.
Solomakha, G. ; https://orcid.org/   +2 more
core   +1 more source

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