Results 31 to 40 of about 28,237 (308)

An interferometer experiment to explore the aspect angle dependence of stimulated electromagnetic emission spectra [PDF]

, 2005
International audienceWhen the Earth's ionosphere is irradiated by a radiofrequency (RF) electromagnetic wave of sufficiently high power density and tuned to match a natural E- or F-region plasma frequency, ionospheric magnetoionic wave modes may be ...
Khudukon, B. Z., Rietveld, Michael T., Yurik, R.Yu, Brekke, A., Belyey, Tereshchenko, Tereshchenko, E., Khudukon, B., Rietveld, M., Hoz, C. La, Belyey, Vasyl, Tereshchenko, E.D., Hagfors, Yurik, R. Yu., Khudukon, Yu. Yurik, Heinselman, C., Grill, Brekke, Belyey, V., Isham, B., Rietveld, Hagfors, T., Heinselman, Brekke, Asgeir, Rietveld, M. T., La Hoz, C., Isham, null La Hoz, Grill, M., Yurik, Yu., null null, Yurik, R. Yu., Yurik, R., La Hoz, Cesar, Tereshchenko, E. D., La Hoz   +36 more
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Plane electromagnetic wave propagation of pulsed periodic field in conductive half-space [PDF]

, 2021
Nowadays, application of pulsed periodic fields in various technological devices is of interest, in particular for the influencing on a conductive media.
Viktor, Timofeev, Eduard, Vinter, Anatolii, Gulyashinov   +2 more
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Interior penalty discontinuous galerkin methods for electromagnetic and acoustic wave equations [PDF]

, 2006
Introduction: In this thesis we present and analyze the numerical approximation of the second order electromagnetic and acoustic wave equation by the interior penalty (IP) discontinuous Galerkin (DG) finite element method (FEM).
Schneebeli, Anna
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Using Multilayered Substrate Integrated Waveguide to Design Microwave Gain Equalizer

Advances in Materials Science and Engineering, 2014
This paper presents the design and experiment of a novel microwave gain equalizer based on the substrate integrated waveguide (SIW) technique. The proposed equalizer is formed by an SIW loaded by SIW resonators, which has very compact structure and can ...
Yongfei Wang, Dongfang Zhou, Yi Zhang, Chaowen Chang   +3 more
doaj   +1 more source

Electromagnetic Guided Wave in Goubau Line with Graphene Covering: TE Case

Photonics, 2023
This paper focuses on the problem of monochromatic terahertz TE-polarized wave propagation in a special type of circle cylindrical waveguides, the so-called Goubau line.
Stanislav Tikhov, Dmitry Valovik
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Broadband electromagnetic wave absorption using pure carbon aerogel by synergistically modulating propagation path and carbonization degree

, 2023
Carbon materials were widely used as electromagnetic (EM) wave absorption due to their advantages of light weight, environmental resistance and high electrical conductivity.
Han, Mengjie, Xiaogang Su, Yanan Liu, Xu, He-Xiu, Yaqing Liu, Siqi Huo, Wang, Jun, Mengjie Han, Jun Wang, Liu, Yannan, Liu, Yaqing, Wu, Qilei, Zhang, Bin, Su, Xiaogang, Bin Zhang, Qilei Wu, He-Xiu Xu, Huo, Siqi   +17 more
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A 77GHz on-chip microstrip patch antenna with suppressed surface wave using EBG substrate [PDF]

, 2013
This paper presents the design of a patch antenna with suppressed surface waves by means of applying an electromagnetic band-gap structure. Establishing th e antenna on high dielectric substrate such as Silicon makes it possible to integrate the ...
Nemati, Mohammad Hossein, Ibrahim Tekin, Tekin, İbrahim, Mohammad Hossein Nemati   +3 more
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Modified Green's Functions for Shallow Water Acoustic Wave Propagation

, 2004
This article presents an assessment of alternative forms of the Green’s function for boundary element simulations of acoustic wave propagation in shallow water. It is assumed that the problem is two-dimensional, the source of acoustic disturbance is time-
Santiago, J A F S, Wrobel, L C
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The nature of electron density enhancement over a wide altitude range during ionosphere heating experiments at EISCAT

Earth and Planetary Physics
During the course of ionospheric heating experiments, researchers at the European Incoherent Scatter Scientific Association (EISCAT) observed an apparent electron density enhancement.
Jun Wu, Jian Wu, Jie Feng, QingLiang Li, ShuJi Hao, ZhengWen Xu, HaiSheng Zhao, YaBin Zhang   +7 more
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Acoustic wave propagation in the solar sub-photosphere with localised magnetic field concentration: effect of magnetic tension [PDF]

, 2009
Aims: We analyse numerically the propagation and dispersion of acoustic waves in the solar-like sub-photosphere with localised non-uniform magnetic field concentrations, mimicking sunspots with various representative magnetic field configurations ...
Shelyag, S., Thompson, Michael John, Zharkov, Sergei, Zharkov, S., M. J. Thompson, Fedun, V., S. Zharkov, Shelyag, Sergiy, Erdélyi, Robert, Erdelyi, R., R. Erdélyi, S. Shelyag, V. Fedun, Thompson, M.J., Fedun, Viktor   +14 more
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