Results 11 to 20 of about 385,363 (284)

Nonstationary discrete theory of excitation of periodic structures and its application for simulation of traveling-wave tubes [PDF]

Известия высших учебных заведений: Прикладная нелинейная динамика, 2021
Aim. This article presents a review of the nonstationary (time-domain) discrete theory of excitation of periodic electromagnetic structures and discusses applications of the theory for simulation of traveling-wave tube (TWT) microwave power amplifiers ...
Ryskin, Nikita Mikhailovich, Rozhnev, Andrej Georgievich, Minenna, Damien F.G., Elskens, Yves, Andre’, Fre’de’ric   +4 more
doaj   +1 more source

General Relativity in Electrical Engineering [PDF]

, 2006
In electrical engineering metamaterials have been developed that offer unprecedented control over electromagnetic fields. Here we show that general relativity lends the theoretical tools for designing devices made of such versatile materials.
Ablowitz M J, Berry M V, Born M, Feynman R P, Gbur G, Gordon W, Greenleaf A, Greenleaf A, Hannay J H, Jackson J D, Lakhtakia A, Lakhtakia A, Landau L D, Landau L D, Lee H, Leonhardt U, Leonhardt U, Leonhardt U Philbin T G, Mackay T G, Mackay T G, McCall M W, McCall M W, Milonni P W, Milton G W, Minkel J R, Misner Ch W, Novello M, Peacock J A, Peshkin M, Schleich W, Schurig D, Schurig D Pendry J B Smith D R, Tamm I Y, Tamm I Y, Thomas G Philbin, Ulf Leonhardt, Van Bladel J, Veselago V   +37 more
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Theory of optical axion electrodynamics and application to the Kerr effect in topological antiferromagnets

Nature Communications, 2022
Electromagnetic response of topological materials is described the so called axion electrodynamics which contains additional relations between the fields.
Junyeong Ahn, Su-Yang Xu, Ashvin Vishwanath   +2 more
doaj   +1 more source

Frequency-Selective Dual Linearly Polarized 76 to 81 GHz Automotive Radar System Concept for Street Condition Monitoring [PDF]

Advances in Radio Science
This study introduces a novel frequency-selective radar system for street condition monitoring (SCM) that eliminates the cost-intensive dedicated monolithic microwave integrated circuit (MMIC) channels approach by sharing radar channels across different ...
S. H. Kazimi, S. H. Kazimi, W. A. Shah, S. Reuner, D. Vollbracht, M. Chandra   +5 more
doaj   +1 more source

New class of exact solutions to Einstein–Maxwell-dilaton theory on four-dimensional Bianchi type IX geometry

European Physical Journal C: Particles and Fields, 2021
We construct new classes of cosmological solution to the five dimensional Einstein–Maxwell-dilaton theory, that are non-stationary and almost conformally regular everywhere.
Bardia H. Fahim, Masoud Ghezelbash
doaj   +1 more source

Relativistic Electromagnetic Mass Models: Charged Dust Distribution in Higher Dimensions [PDF]

, 2005
Electromagnetic mass models are proved to exist in higher dimensional theory of general relativity corresponding to charged dust distribution. Along with the general proof a specific example is also sited as a supporting candidate.Comment: Latex, 7 pages.
A. Banerjee, A. Chodos, D. Lorenz-Petzold, D.N. Pant, G. Mohanty, G.S. Khadekar, H. Ishihara, J. Ibanèz, J. Ponce de Leon, J.D. Gegenberg, J.H. Schwarz, P.S. Wesson, R. Gautreau, R.N. Tiwari, R.N. Tiwari, R.P. Feynman, S. Chatterjee, S. Ray, S. Weinberg, Saibal Ray, Sumana Bhadra, T. Fukui, Ø. Grøn   +22 more
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Search For Gravitational Waves Through the Electromagnetic Faraday Rotation [PDF]

, 2006
A method is given which renders indirect detection of strong gravitational waves possible. This is based on the reflection (collision) of a linearly polarized electromagnetic shock wave from (with) a cross polarized impulsive and shock gravitational ...
C. Barrabes, J. B. Griffiths, M. Halilsoy, O. Gurtug   +3 more
core   +2 more sources

Massless DKP fields in Riemann-Cartan space-times [PDF]

, 2002
We study massless Duffin-Kemmer-Petiau (DKP) fields in the context of Einstein-Cartan gravitation theory, interacting via minimal coupling procedure. In the case of an identically vanishing torsion (Riemannian space-times) we show that there exists local
Casana, R., Fainberg, V. Ya., Lunardi, J. T., Pimentel, B. M., Teixeira, R. G.   +4 more
core   +2 more sources

Electromagnetic Doppler effect in non-reciprocal medium

AIP Advances, 2023
Reflected light from a moving object, such as a mirror, is frequency-shifted via the Doppler effect. This well-known phenomenon is used to determine the speed and direction of an object due to the red or blue shifting of the received electromagnetic ...
Douglas M. Baney
doaj   +1 more source

A fundamental limit on the performance of geometrically-tuned planar resonators [PDF]

, 2011
Geometric frequency tuning in planar electromagnetic resonators is common in many applications. It comes, however, at a penalty in the resonance quality, Q0. The literature traces the causes of such penalty often in terms of the shortcomings in the added
Beach, MA, Morris, KA, Naji, A, Warr, PA
core   +2 more sources