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Articoli di riviste sul tema "Electromagnetic Wave Propagation"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Yang, Jing Gang, Yong Yong Jia, Ke Zhao, and Shan Gao. "Simulation Study of Partial Discharge UHF Wave Transmission Characteristic in GIS Typical Structure." Applied Mechanics and Materials 672-674 (October 2014): 787–92. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.787.

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Defects inside the gas-insulated switchgear (GIS) will produce ultra-high frequency (UHF) electromagnetic waves. The waves will be affected by the shell of GIS when propagating inside the GIS cavity. In the 0-3GHz frequency range, propagation characteristic of electromagnetic which is excited by partial discharge in GIS is simulated based on the method of finite difference time domain (FDTD). This paper designs the GIS simulation models with and without insulator according to the size of a 220kV single phase GIS bus and sets a metal protrusion defect on the bus as the PD source. The transmissi

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2

Basmaci, Ayse. "The Behavior of Electromagnetic Wave Propagation in Photonic Crystals with or without a Defect." Applied Computational Electromagnetics Society 36, no. 6 (2021): 632–41. http://dx.doi.org/10.47037/2020.aces.j.360603.

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In this study, the electromagnetic wave propagation behavior of two-dimensional photonic crystal plates with a defect is investigated. For this purpose, the partial differential equation for the electromagnetic wave propagation in various photonic crystal plates containing a defect or not is obtained by using Maxwell’s equations. The defect is also defined in the electromagnetic wave propagation equation appropriately. In order to solve the electromagnetic wave propagation equation, the finite differences method is used. The material property parameters of the photonic crystal plates are deter

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3

G. Maikasuwa, A. Muhammad, D.T. Agana, M.M. Usman, and M.N. Abdulkareem. "Computational Analysis of Weakly Magnetized Plasma's Effects on Electromagnetic Wave Propagating Perpendicular to the Magnetic Field." International Journal of Advanced Engineering and Management Research 08, no. 03 (2023): 167–83. http://dx.doi.org/10.51505/ijaemr.2023.8312.

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Magnetised plasma influences electromagnetic wave propagation, this resulting in polarisations at different velocities, an effect that can result in ghost signals. This work provided critical information on the effects of magnetized plasma on electromagnetic (EM) wave propagation perpendicular to the magnetic field. Electromagnetic waves propagating perpendicular to the magnetic field in a weakly magnetized plasma were studied. Furthermore, there are two modes of EM wave propagation perpendicular to the field: ordinary (O) and extraordinary (X). The values of the ordinary (O) mode's frequency

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4

Korochentsev, Vladimir, Wei Xue, Gennadiy Shabanov, Artem Em, and Yuliya Shpak. "Interaction of electromagnetic waves in an ice layer." E3S Web of Conferences 127 (2019): 02011. http://dx.doi.org/10.1051/e3sconf/201912702011.

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A mathematical model for spherical wave propagation near an ice layer has been developed. The proposed mathematical model is based on the directed Green’s functions with boundary conditions with irregular angles. Based on the suggested model, we analyzed a field of a point directed source radiating electromagnetic waves in two cases: the source is in the air and is radiating waves along the marine ice surface; the source is in the ice layer and radiating waves. Results of the modeling for different frequencies and different ice thickness are described. It was shown that wave amplitude increase

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5

Zhou, Jianming, Jingjing Fang, Qiuyuan Lu, and Fan Liu. "Research on Radiation Characteristic of Plasma Antenna through FDTD Method." Scientific World Journal 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/290148.

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The radiation characteristic of plasma antenna is investigated by using the finite-difference time-domain (FDTD) approach in this paper. Through using FDTD method, we study the propagation of electromagnetic wave in free space in stretched coordinate. And the iterative equations of Maxwell equation are derived. In order to validate the correctness of this method, we simulate the process of electromagnetic wave propagating in free space. Results show that electromagnetic wave spreads out around the signal source and can be absorbed by the perfectly matched layer (PML). Otherwise, we study the p

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6

Ma, Ye Wan, Zhao Wang Wu, Quan Jin Liu, et al. "The Optical Properties of Nano-Materials and Electromagnetic Wave Propagation Visualized with MATLAB." Key Engineering Materials 773 (July 2018): 138–44. http://dx.doi.org/10.4028/www.scientific.net/kem.773.138.

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The course of electromagnetic fields and waves has properties of abstract concept, strong theory and complex calculation, thus this course is difficult to study and understand, and then is also difficult to teach. In order to make the understanding of the course easier, MATLAB software is used as a platform in classroom teaching of electromagnetic fields and waves. This paper mainly discusses the electrical field intensity distribution of media sphere materials and the properties of electromagnetic wave propagation with MATLAB software. The optical properties of dielectric-metal core-shell mul

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7

Basmaci, Ayse Nihan. "Behaviors of Electromagnetic Wave Propagation in Double-Walled Carbon Nanotubes." Materials 14, no. 15 (2021): 4069. http://dx.doi.org/10.3390/ma14154069.

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In this study, behaviors of electromagnetic wave propagation in a double-walled carbon nanotube (DWCNT) are investigated theoretically. For this purpose, the effects of carbon nanotube’s inner and outer tubes’ material property parameters (μ, ε) on electromagnetic wave propagation are discussed. The effects of interaction between the carbon nanotube’s inner and outer tubes on the electromagnetic wave propagation are defined. Nonlocal effects of the DWCNT on electromagnetic wave propagation are examined. Besides, the electromagnetic wave propagation frequencies are specifically investigated, ta

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8

Chen, Chuanjie, Emile Carbone, Shou-Zhe Li, Feng Zhou, and Rugang Wang. "Electromagnetic wave propagation in pulsed surface wave sustained plasmas at atmospheric pressure." Plasma Sources Science and Technology 34, no. 1 (2025): 01LT01. https://doi.org/10.1088/1361-6595/ad8ae9.

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Abstract In this work, a long surface wave plasma column is generated using high power pulse-modulated microwave power in argon at atmospheric pressure. The temporal evolutions of the electron density and temperature are diagnosed by optical emission spectroscopy. It is found that the emission intensity peaks correspond to the nodes of standing surface waves where the local electric field is reduced, rather than the antinodes, which is in contrast with that in low pressure discharges. The reasons for this behavior are discussed by considering the excitation balance of the excited levels of Ar

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9

Yi, Yan. "Propagation of electromagnetic wave in gravitational field." Physics Essays 34, no. 1 (2021): 89–96. http://dx.doi.org/10.4006/0836-1398-34.1.89.

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This paper is the third part of the induction theory of gravitational field. It mainly discusses some propagation characteristics of electromagnetic wave in the space-time constructed in the first paper [Y. Yi, Phys. Essays 33, 219 (2020)]. In this paper, a new definition of the basic properties of electromagnetic wave is given at first. Second, the photoelectric effect is explained by the new electromagnetic wave properties. Then, the propagation law of electromagnetic wave in space-time is discussed. Finally, the propagation law of electromagnetic wave in axisymmetric gravitational field is

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10

Tleukenov, S. K., K. N. Balabekov, and Z. K. Zhalgasbekova. "Laws of reflection and refraction of TE and TM polarization waves on the border of rhombic crystals." Bulletin of the Karaganda University. "Physics" Series 97, no. 1 (2020): 70–81. http://dx.doi.org/10.31489/2020ph1/70-81.

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The article analytically solves the problem of reflection and refraction of electromagnetic plane waves of different polarization at the boundary of anisotropic half-spaces of rhombic symmetry. Based on the matrix method, the angles of refraction of electromagnetic waves of different polarization, the amplitudes of the reflected and refracted waves, the angles that determine the direction of the group velocities and vectors of the flow of electromagnetic energy, the magnitudes of the flows of electromagnetic energy and their components depending on the direction of the wave vector of the incid

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11

Li, Fan, and Linwei Guo. "Breakup of spatiotemporal pattern under electromagnetic radiation." International Journal of Modern Physics B 33, no. 16 (2019): 1950165. http://dx.doi.org/10.1142/s0217979219501650.

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Stable wave propagation is important for heart health, however, the electromagnetic radiation could affect normal signal propagation of heart, even make a sudden cardiac arrest. In this paper, the effect of electromagnetic radiation on the propagation of stable target wave generated by linear feedback control is studied in detail. It is confirmed that there are different transitions of electrical activities in cardiac tissue, which are transitions from target wave to spiral wave, some isolated islands of pattern waves coexisted, broken pattern and even the quiescent state, are generated when t

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12

Bashkuev, Yuri, and Mikhail Dembelov. "Modeling of the Propagation of LF–MF–SF Bands Electromagnetic Waves on Arctic Paths." Infocommunications and Radio Technologies 6, no. 1 (2023): 53–62. http://dx.doi.org/10.29039/2587-9936.2023.06.1.05.

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The article demonstrates that the conditions of LF–MF–SF bands electromagnetic wave propagation over the “ice-sea” structure with highly inductive impedance are more favorable than over the sea without ice because of the appearance of surface electromagnetic waves (SEW). It was determined that the conditions of radio wave propagation over ice paths depend on a frequency, ice thickness and distance from the transmitter within the 100 kHz – 5 MHz range on the paths with ice thickness from 0.6 to 2.7 meters.

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13

Yang, Li-Xia, Chao Liu, Qing-Liang Li, and Yu-Bo Yan. "Electromagnetic wave propagation characteristics of oblique incidence nonlinear ionospheric Langmuir disturbance." Acta Physica Sinica 71, no. 6 (2022): 064101. http://dx.doi.org/10.7498/aps.71.20211204.

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Based on the generalized Zakharov model, a numerical model of electromagnetic wave propagating in the ionosphere at different angles is established by combining the finite difference time domain (FDTD) method of obliquely incident plasma with the double hydrodynamics equation and through equivalently transforming the two-dimensional Maxwell equation into one-dimensional Maxwell equation and the plasma hydrodynamics equation. In this paper. the dominant equation of Z-wave in obliquely incident nonlinear ionospheric plasma having been analyzed and deduced, the FDTD algorithm suitable for calcula

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14

Romero-Abad, David, José-Pedro Reyes-Portales, and Roberto Suárez-Córdova. "Plane-wave propagation in media with electromagnetic anisotropy." European Journal of Physics 43, no. 2 (2021): 025301. http://dx.doi.org/10.1088/1361-6404/ac41ad.

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Abstract The propagation of electromagnetic waves in a medium with electrical and magnetic anisotropy is a subject that is not usually handled in conventional optics and electromagnetism books. During this work, we try to give a pedagogical approach to the subject, using tools that are accessible to an average physics student. In this article, we obtain the Fresnel relation in a media with electromagnetic anisotropy, which corresponds to a quartic equation in the refraction index, assuming only that the principal axes of the electric and magnetic tensors coincide. Additionally, we find the geo

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15

Ueda, H. O., Y. Omura, and H. Matsumoto. "Computer simulations for direct conversion of the HF electromagnetic wave into the upper hybrid wave in ionospheric heating experiments." Annales Geophysicae 16, no. 10 (1998): 1251–58. http://dx.doi.org/10.1007/s00585-998-1251-y.

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Abstract. Excitation of upper hybrid waves associated with the ionospheric heating experiments is assumed to be essential in explaining some of the features of stimulated electromagnetic emissions (SEE). A direct conversion process is proposed as an excitation mechanism of the upper hybrid waves where the energy of an obliquely propagating electromagnetic pump wave is converted into the electrostatic upper hybrid waves due to small-scale density irregularities. We performed electromagnetic particle-in-cell simulations to investigate the energy conversion process in the ionospheric heating expe

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16

Islomov, Muhammad. "PLANE ELECTROMAGNETIC WAVE PARAMETERS." MODERN SCIENCE AND RESEARCH 3, no. 2 (2024): 88–91. https://doi.org/10.5281/zenodo.10629568.

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<em>Nowadays, in practice, when it is required to calculate electromagnetic fields, the use of some mathematical model is of great importance. Because, with the help of this model, it is possible to express the propagation of electromagnetic waves in real conditions. One of them is the plane electromagnetic wave model, which can be used to calculate many wave processes. Let's first understand a little bit about the plane electromagnetic wave. In this, first of all, it is necessary to learn the concept of wave front or wavy surface.</em>

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17

Chanyal, B. C. "A relativistic quantum theory of dyons wave propagation." Canadian Journal of Physics 95, no. 12 (2017): 1200–1207. http://dx.doi.org/10.1139/cjp-2017-0080.

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Beginning with the quaternionic generalization of the quantum wave equation, we construct a simple model of relativistic quantum electrodynamics for massive dyons. A new quaternionic form of unified relativistic wave equation consisting of vector and scalar functions is obtained, and also satisfy the quaternionic momentum eigenvalue equation. Keeping in mind the importance of quantum field theory, we investigate the relativistic quantum structure of electromagnetic wave propagation of dyons. The present quantum theory of electromagnetism leads to generalized Lorentz gauge conditions for the el

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18

Viñas, Adolfo F., and Melvyn L. Goldstein. "Parametric instabilities of circularly polarized large-amplitude dispersive Alfvén waves: excitation of parallel-propagating electromagnetic daughter waves." Journal of Plasma Physics 46, no. 1 (1991): 107–27. http://dx.doi.org/10.1017/s0022377800015981.

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We investigate the parametric decay and modulational instabilities of a large-amplitude circularly polarized dispersive Alfvén wave. Our treatment is more general than that of previous derivations based on the two-fluid equations in that we allow for propagation of the unstable daughter waves at arbitrary angles to the background magnetic field, although our main concern in this paper is the exploration of new aspects of propagation parallel to the DC magnetic field. In addition to the well-known coupling of pump waves to electrostatic daughter waves, we find a new parametric channel where the

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19

Schejbal, V., O. Fiser, D. Cermak, and Z. Nemec. "Electromagnetic Wave Propagation through Obstacles." Telecommunications and Radio Engineering 67, no. 6 (2008): 487–94. http://dx.doi.org/10.1615/telecomradeng.v67.i6.30.

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20

Platt, I. G. "Introduction to electromagnetic wave propagation." Journal of Atmospheric and Terrestrial Physics 56, no. 1 (1994): 150. http://dx.doi.org/10.1016/0021-9169(94)90191-0.

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Wu, Thomas X., and Dwight L. Jaggard. "On chaotic electromagnetic wave propagation." Microwave and Optical Technology Letters 21, no. 6 (1999): 448–51. http://dx.doi.org/10.1002/(sici)1098-2760(19990620)21:6<448::aid-mop14>3.0.co;2-l.

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Ispulov, N. A., Abdul Qadir, A. Zh Zhumabekov, A. A. Kurmanov, and K. R. Dosumbekov. "On nonclassical boundary conditions for the contact of thin interlayers with different physical and mechanical properties on wave propagation in anisotropic media." Bulletin of the Karaganda University. "Physics" Series 107, no. 3 (2022): 68–79. http://dx.doi.org/10.31489/2022ph3/68-79.

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Wave processes are intensively studied in various fields of physics: electrodynamics, plasma physics, radiophysics, acoustics, hydrodynamics, etc. Along with the study of electromagnetic and elastic wave processes, the research of patterns of wave propagation of various physical nature in the presence of mutual transformation are of particular relevance. Wave processes in coupled fields reflect the mutual influence of elastic, electromagnetic and thermal fields. The coupling of electromagnetic fields to the deformation field takes place in a medium with piezoelectric, piezomagnetic and magneto

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23

Sazhin, S. S. "An approximate theory of electromagnetic wave propagation in a weakly relativistic plasma." Journal of Plasma Physics 37, no. 2 (1987): 209–30. http://dx.doi.org/10.1017/s0022377800012125.

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An approximate analysis of different types of electromagnetic wave propagation in a weakly relativistic electron plasma is presented. The particular case of wave propagation near the cold plasma cut-offs is considered, and possible applications of the results to diagnostics of magnetospheric parameters are discussed. It is pointed out that wave propagation near plasma resonances in some cases requires relativistic consideration, especially for extraordinary waves. Almost parallel right- and left-hand polarized waves as well as almost perpendicular ordinary and extraordinary wave propagation ar

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Gao, Ying, Qun Shao, Binzhou Yan, Qifan Li, and Shuxia Guo. "Parabolic Equation Modeling of Electromagnetic Wave Propagation over Rough Sea Surfaces." Sensors 19, no. 5 (2019): 1252. http://dx.doi.org/10.3390/s19051252.

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The parabolic equation is an efficient numerical solution for electromagnetic wave propagation. In order to address the difficulties in predicting electromagnetic wave propagation in the maritime environment caused by atmospheric dust and rough sea surfaces, and the shortcomings of the existing research that cannot fully reflect the rough characteristics of sea surfaces, the authors have modelled electromagnetic wave propagation in the maritime environment, including in the presence of atmospheric dust. In this study the authors present a parabolic equation modeling method for calculating the

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Tleukenov, S. K., Zh N. Suierkulova, and S. A. Nurkenov. "Indicatrix of TE and TM- polarized wave velocities in crystal of classes 4mm, 3m, 6mm with magneto-electric effect." Bulletin of the Karaganda University. "Physics" Series 109, no. 2 (2023): 23–30. http://dx.doi.org/10.31489/2023ph1/23-30.

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This work is devoted to the theoretical study of the laws of propagation of electromagnetic waves of TE and TM polarization in anisotropic media belonging to classes 4mm, 3m, 6mm, etc. having a magnetoelectric effect. The directions of the vectors of the phase and group velocities of the polarization waves TE and TM at the boundary of a uniaxial crystal with magnetoelectric properties are considered. In the analytical form, the values of the directions of the phase and group velocities of the TE and TM waves are indicated, depending on the direction of the wave vector of the incident wave. The

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26

Dmitrieva, I. Yu. "Analytical study of electromagnetic wave propagation in the finite homogeneous lines." Odes’kyi Politechnichnyi Universytet. Pratsi, no. 1 (June 10, 2014): 212–18. http://dx.doi.org/10.15276/opu.1.43.2014.36.

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Effiong, Godwin, Tebe Larry Ojukonsin, and Ayibapreye Kelvin Benjamin. "Evaluation of Split-Step Fourier Transform for Tropospheric Electromagnetic Wave Propagation." International Journal of Science and Research (IJSR) 11, no. 9 (2022): 522–27. http://dx.doi.org/10.21275/sr22831171347.

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FISANOV, V. V. "SURFACE WAVES AT THE INTERFACE OF A PLASMA METAMATERIAL AND VACUUM IN THE GEOMETRICAL VOIGT CONFIGURATION." Izvestiya vysshikh uchebnykh zavedenii. Fizika 63, no. 9 (2024): 90–97. https://doi.org/10.17223/00213411/67/9/10.

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Surface electromagnetic waves propagating along the plane interface between the half-space of plasma metamaterial and vacuum are considered in Voigt geometry (a constant magnetic field is applied along the interface and across the wave propagation). The characteristics of surface waves are compared for two gyroelectric media that differ in the sign of magnetic permeability.

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Dubinov, Aleksandr, and Viktor Selemir. "Description of flat electromagnetic waves through stationary fractal media." Izvestiya VUZ. Applied Nonlinear Dynamics 3, no. 1 (1995): 82–89. https://doi.org/10.18500/0869-6632-1995-3-1-82-89.

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New wave equations, describing electromagnetic propagation through ractal media, are derived. The formalism of fractional order of integration and differentiation serves as а basis for the derivation, mentioned above. The equations derived can be used atг studying propagation of electromagnetic waves through highly turbulized fluxes of liquid, gas and plasma.

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Liu, Xingxun, Tao Zhang, and Wangquan Qi. "Propagation of electromagnetic wave in coaxial conical transverse electromagnetic wave cell." Chinese Journal of Mechanical Engineering 28, no. 6 (2015): 1222–28. http://dx.doi.org/10.3901/cjme.2015.0410.040.

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Márkus, Ferenc, and Katalin Gambár. "Lagrangian Coupling of Dissipative Electrodynamic Waves with the Thermal Absorption and Emission." Symmetry 16, no. 12 (2024): 1559. http://dx.doi.org/10.3390/sym16121559.

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Electromagnetic wave dissipation is experienced in radiative absorbing-emitting processes and signal transmissions via media. The absorbed wave initiates thermal processes in the conducting medium. Conversely, thermal processes generate electromagnetic waves in the vacuum–material interface region. The two processes do not take place symmetrically, i.e., the incoming and thermalizing electromagnetic spectrum does not occur in the reverse process. The conservation of energy remains in effect, and the loop process “electromagnetic wave–thermal propagation–electromagnetic wave” is dissipative. In

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Biowei, G., S. A. Adekola, A. K. Benjamin, and K. A. Amusa. "Modelling of electromagnetic wave propagation at free space-human skin interface." Nigerian Journal of Technology 43, no. 1 (2024): 123–30. http://dx.doi.org/10.4314/njt.v43i1.14.

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The proliferation of the ambient environment with many wireless communication infrastructures has constituted a source of concern, at least from health point of view. Hence, there is a need for the investigation of electromagnetic wave interaction with human tissue. This paper models electromagnetic wave propagation at the free-space-human tissue interface, in an attempt to understand how electromagnetic waves interact with the human skin. Maxwell’s equations were used to derive the governing equations of propagating electromagnetic waves in free space while the solution of the boundary-value

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Gradoni, Gabriele, Johannes Russer, Mohd Hafiz Baharuddin, et al. "Stochastic electromagnetic field propagation— measurement and modelling." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 376, no. 2134 (2018): 20170455. http://dx.doi.org/10.1098/rsta.2017.0455.

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This paper reviews recent progress in the measurement and modelling of stochastic electromagnetic fields, focusing on propagation approaches based on Wigner functions and the method of moments technique. The respective propagation methods are exemplified by application to measurements of electromagnetic emissions from a stirred, cavity-backed aperture. We discuss early elements of statistical electromagnetics in Heaviside's papers, driven mainly by an analogy of electromagnetic wave propagation with heat transfer. These ideas include concepts of momentum and directionality in the realm of prop

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Eremenko, Z. E. "The Electromagnetic Wave Propagation on the Interface between Low and High Loss Dielectrics." Advances in Condensed Matter Physics 2010 (2010): 1–8. http://dx.doi.org/10.1155/2010/683521.

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The wave propagation on closed curved interface (a rod or ball) between low and high loss dielectrics was studied and compared with well-known wave propagation problem on flat plane interface between low loss and high loss media. We have studied the propagation of a cylindrical wave along a round dielectric rod immersed into a high loss medium and a spherical wave forming by the oscillations in a dielectric ball immersed into a high loss medium as well. These waves have surface character similar to the wave known as the Zenneck surface wave. The distinctive characteristic of such cylindrical o

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Staicova, Denitsa, and Michail Stoilov. "Electromagnetic Waves in Cosmological Spacetime." Universe 9, no. 6 (2023): 292. http://dx.doi.org/10.3390/universe9060292.

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We consider the propagation of electromagnetic waves in the Friedmann–Lemaître–Robertson–Walker metric. The exact solutions for plane and spherical wave are written down. The corresponding redshift, amplitude change, and dispersion are discussed. We also speculate about the connection of the electromagnetic wave equation to the Proca equation and its significance for the early Universe.

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Mizonova, V. G., and P. A. Bespalov. "The Influence of Small Variations of Plasma Density on Conditions of Propagation of Electromagnetic Waves of the Whistle Range through the Morning Ionosphere." Космические исследования 61, no. 2 (2023): 91–102. http://dx.doi.org/10.31857/s0023420622100077.

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The problem of the effect of plasma-density disturbances caused by infrasonic waves on the propagation and reflection of whistler electromagnetic waves incident on the morning ionosphere from above is considered. The influence of the parameters of an infrasonic wave on the coefficient of reflection of a whistler wave from the ionosphere from above in the general case of oblique propagation is studied. The strongest changes in the reflection coefficient of whistler waves are associated with concentration perturbations at heights of the order of 80–100 km, where the rate of decay of propagating

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Kim, Jaeuk, and Salvatore Torquato. "Multifunctional composites for elastic and electromagnetic wave propagation." Proceedings of the National Academy of Sciences 117, no. 16 (2020): 8764–74. http://dx.doi.org/10.1073/pnas.1914086117.

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Composites are ideally suited to achieve desirable multifunctional effective properties since the best properties of different materials can be judiciously combined with designed microstructures. Here, we establish cross-property relations for two-phase composite media that link effective elastic and electromagnetic wave characteristics to one another, including the respective effective wave speeds and attenuation coefficients, which facilitate multifunctional material design. This is achieved by deriving accurate formulas for the effective electromagnetic and elastodynamic properties that dep

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Zhang, Qingsong, Weikang Zhao, Hui Zhuo, Long Lin, and Zuojian Li. "Investigation of electromagnetic wave propagation characteristics across various frequencies in porous media of goaf." PLOS ONE 19, no. 12 (2024): e0315888. https://doi.org/10.1371/journal.pone.0315888.

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The reliable long-distance transmission of electromagnetic wave signals within goaf is fundamental for the implementation of wireless monitoring and early warning systems for goaf-related disasters. This paper establishes an experimental platform for electromagnetic wave signal transmission within goaf and develops a propagation model for electromagnetic waves in the porous media of goaf. The transmission characteristics of electromagnetic waves at various frequencies within the porous media environment of goaf are investigated through experimental and numerical simulation approaches. The resu

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Fei, Bixiao. "Analytical Solution of Electromagnetic Force Lines in Rectangular Wave Guides for Transverse Electric Waves." Applied and Computational Engineering 105, no. 1 (2024): 110–16. https://doi.org/10.54254/2755-2721/2024.tj17855.

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The analytical solution of the electromagnetic field lines was derived, providing a foundation for generalizing conclusions and forming a coherent set of equations to describe the dynamics of electromagnetic waves. By applying Maxwell's equations, this paper analyzed the rectangular waveguide model, focusing on the guiding effect of the passive region on the propagation of electromagnetic waves. Additionally, the Helmholtz equation was used to describe the behavior of electromagnetic fields within the passive guided wave system. Through the analytical solution of the field lines, the distribut

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Chun, Heoung Jae, and Hyun Su Shin. "Effect of Anisotropic Characteristics of Composite Skins on the Electromagnetic Wave Propagation in the Foam Core Sandwich Structures." International Journal of Modern Physics B 17, no. 08n09 (2003): 1782–87. http://dx.doi.org/10.1142/s0217979203019666.

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Abstract (sommario):

The propagation of electromagnetic waves in the foam core sandwich structures is highly affected by anisotropic permittivity and loss tangent of composite skins. Even though many investigations were focused on the propagation of electromagnetic waves in the composite materials in last several decades, little investigations were carried out to understand adequately the propagation of the electromagnetic waves in the foam core sandwich structures. In this study, the transmittance of the arbitrary linearly polarized incident TEM waves through the solid composite laminate with various stacking seq

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41

Chen, Bingkang. "ADE-FDTD method for study of two-dimensional electromagnetic wave propagation in lossy lorentz medium." MATEC Web of Conferences 309 (2020): 01002. http://dx.doi.org/10.1051/matecconf/202030901002.

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In order to study the reflection of electromagnetic wave in Lorentz medium layer, the finite difference time domain method of auxiliary differential equation (ADE-FDTD) is used to derive the difference formula of two-dimensional TM wave propagating in lossy Lorentz medium, and the reflection coefficient of reflection field is calculated in one-dimensional case. The calculated reflection coefficients coincide very well, which shows that the derived propagation formula of two-dimensional TM wave in lossy Lorentz medium is correct. In addition, the reflection of plane electromagnetic wave by infi

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42

Jiang, Shan, and Stavros Georgakopoulos. "Electromagnetic Wave Propagation into Fresh Water." Journal of Electromagnetic Analysis and Applications 03, no. 07 (2011): 261–66. http://dx.doi.org/10.4236/jemaa.2011.37042.

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43

Kadlec, Radim, Pavel Fiala, and D. NeÅ¡por. "Electromagnetic Wave Propagation in Heterogeneous Structures." PIERS Online 6, no. 7 (2010): 613–16. http://dx.doi.org/10.2529/piers091218090108.

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44

Marcus, Sherman W. "Electromagnetic Wave Propagation Through Chaff Clouds." IEEE Transactions on Antennas and Propagation 55, no. 7 (2007): 2032–42. http://dx.doi.org/10.1109/tap.2007.900178.

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45

Alonso, Ricardo, and Liliana Borcea. "Electromagnetic Wave Propagation in Random Waveguides." Multiscale Modeling & Simulation 13, no. 3 (2015): 847–89. http://dx.doi.org/10.1137/130941936.

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46

Kristensson, G. "Transient electromagnetic wave propagation in waveguides." Journal of Electromagnetic Waves and Applications 9, no. 5-6 (1995): 645–71. http://dx.doi.org/10.1163/156939395x00866.

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47

Yang, Wenbo, Jennifer M. Reed, Haining Wang, and Shengli Zou. "Surface-plasmon-assisted electromagnetic wave propagation." Physical Chemistry Chemical Physics 12, no. 39 (2010): 12647. http://dx.doi.org/10.1039/c0cp00221f.

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48

Hu, Sumou, Hui Xie, and Zhangming Li. "Evaluation of Electromagnetic Fields of Extremely Low-Frequency Horizontal Electric Dipoles at Sea–Air Boundaries." Electronics 12, no. 19 (2023): 4165. http://dx.doi.org/10.3390/electronics12194165.

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Abstract (sommario):

The technologies of undersea detection and communication, seabed sensor networks, and geophysical detection using electromagnetic waves have emerged as research focal points within the field of marine science and engineering. However, most studies have focused on the propagation of electromagnetic fields over long distances within the shallow “sea-seabed” environment. This paper introduces a quasi-static approximation method to address the Sommerfeld numerical integration challenge within the near-field region, employing the horizontal electric dipole (HED) as a model. It derives the Sommerfel

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49

Mordachev, V. I. "Characteristics of the electromagnetic environment created by radiations of user equipment of ...4G/5G/6G cellular (mobile) communications in buildings." Doklady BGUIR 19, no. 6 (2021): 42–50. http://dx.doi.org/10.35596/1729-7648-2021-19-6-42-50.

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The goal of the work is to substantiate the technique for assessing the intensity of electromagnetic background generated by the set of radiating user devices of mobile communications in multi-storey buildings. For known empirical models of radio wave propagation in buildings, expressions are obtained for the probability distribution density and expectation of the power flux density of electromagnetic fields generated inside building by these sources from various parts of the building's interior space: from the near zone with radio wave propagation conditions similar to free space; and from th

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Kolobov, Vitalii V., Maksim B. Barannik, and Viktor V. Ivonin. "Experimental investigation of electromagnetic wave propagation on a substation grounding system." Transactions of the Kоla Science Centre of RAS Series Engineering Sciences 14, no. 6/2023 (2023): 59–65. http://dx.doi.org/10.37614/2949-1215.2023.14.6.007.

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Abstract (sommario):

Experimental investigations of the propagation of electromagnetic waves in the grounding wire were carried out at the operating 150 kV substation. The wave propagation velocities obtained during the experiment are in the range of 50–100·106 m/s. Thus, the obtained wave propagation velocity along the grounding grid of the substation is several times less than the speed of light, which can radically change the design approaches of the grounding in term of lightning protection.

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