Results 31 to 40 of about 113,158 (265)

Electromagnetic Performance of Waveguide Polarizers with Sizes Obtained by Single-Mode Technique and by Trust Region Optimization

open access: yesAdvanced Electromagnetics, 2022
Modern wireless networks, stationary terrestrial and satellite systems use many modern technologies to increase communication channels information capacity. They save limited frequency resources.
S. Piltyay   +3 more
doaj   +3 more sources

The pseudo-limit problem existing in electromagnetic radiation transmission and its mathematical physics principle analysis

open access: yesOpen Physics, 2019
In the study of electromagnetic radiation transmission for large airflow layers, it is found that not all electromagnetic waves are capable of forming waveguide propagation, and have a limit value problem.
Wang Yibo   +3 more
doaj   +1 more source

A numerical method for solving a system of integral equations in the problem of electromagnetic waves’ propagation in a graphene rod

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2023
Background. The problem of electromagnetic waves’ propagation in a dielectric rod of arbitrary cross-section covered with a layer of graphene, which is considered infinitely thin, is considered.
Yuriy G. Smirnov, Marina A. Moskaleva
doaj   +1 more source

Electromagnetic wave propagation in general relativistic situations: A general solution of the problem [PDF]

open access: yesRadio Science, 2012
The exact full‐wave modeling and computation of the electromagnetic signals propagating through curved space‐time is important from theoretical and practical aspects (e.g., for satellite positioning systems). In this paper a general solution method is presented for these problems.
openaire   +1 more source

Poles and zeros of the scattering matrix associated to defect modes

open access: yes, 2000
We analyze electromagnetic waves propagation in one-dimensional periodic media with single or periodic defects. The study is made both from the point of view of the modes and of the diffraction problem.
  +15 more
core   +1 more source

Gravitomagnetic Effects in the Propagation of Electromagnetic Waves in Variable Gravitational Fields of Arbitrary-Moving and Spinning Bodies [PDF]

open access: yes, 2001
Propagation of light in the gravitational field of self-gravitating spinning bodies moving with arbitrary velocities is discussed. The gravitational field is assumed to be "weak" everywhere. Equations of motion of a light ray are solved in the first post-
A. Einstein   +56 more
core   +2 more sources

Investigation of Electromagnetic Waves in Prefractal Microstrip Line Systems By the Raleigh Method [PDF]

open access: yesЖурнал нано- та електронної фізики, 2010
Investigation of electromagnetic waves in the prefractal microstrip line system is presented. The problem is formulated in the form of a set of the first kind singular integral equations, which are transformed for application of the Raleigh method.
G.I. Koshovy
doaj  

Electromagnetic wave propagation in inhomogeneous, moving media: A general solution of the problem [PDF]

open access: yesRadio Science, 2011
The exact computation, the exact modeling of the propagation of electromagnetic signals through inhomogeneous moving media, is an old theoretical and measuring/data interpretation problem, because in a lot of practical problems, such as the accurate space‐time determination in satellite positioning systems, the occultation measurements, or the accurate
openaire   +1 more source

Elastic Wave Eigenmode Solver for Acoustic Waveguides [PDF]

open access: yes, 2017
A numerical solver for the elastic wave eigenmodes in acoustic waveguides of inhomogeneous cross-section is presented. Operating under the assumptions of linear, isotropic materials, it utilizes a finite-difference method on a staggered grid to solve for
Dostart, Nathan   +2 more
core   +4 more sources

On the Fredholm property of integral equations system in the problem of electromagnetic waves propagation in a graphene-coated rod

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2023
Background. The problem of electromagnetic waves propagation in a dielectric rod of arbitrary cross-section covered with a layer of graphene, which is considered infinitely thin, is considered.
Yuriy G. Smirnov
doaj   +1 more source

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