Reflection and transmission of electromagnetic waves normally incident on a plasma slab moving uniformly along a magnetostatic field

Chawla, B.R.; Unz, H.

doi:10.1109/tap.1969.1139548

Cited by 25 publications

(13 citation statements)

References 13 publications

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“…The discussion of the various pertinent modes is a complicated matter which will not be covered here (and is not recommended for the syllabus of a course based on the present article). See for example Chawla and Unz [36].…”

Section: Dispersion Equations In Moving Mediamentioning

confidence: 99%

“…Therefore the eikonal approximation has the same property as the Fourier transformation in (36), namely that the differential operation ∂ X is equivalent to algebraization, by producing a factor iK .…”

Section: Application To Hamiltonian Ray Propagationmentioning

confidence: 99%

“…Now apply the Fourier transform (33) to (152) and note, like in (36), that ∂ X ⇔ iK are interchangeable. Consequently in the spatiotemporal domain X the constitutive relation (152) is given by…”

Section: Differential Operator Constitutive Relationsmentioning

confidence: 99%

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Application-Oriented Relativistic Electrodynamics (2)

Censor¹

2000

PIER

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Abstract-This article is a revised and upgraded edition of a previous one published in this journal, hence the label (2), see the General Remarks section below.Relativistic Electrodynamics, for many years a purely academic subject from the point of view of the applied physicist and electromagnetic radiation engineer, is nowadays recognized as pertinent to many practical applications. We therefore need to define a syllabus and explore the best methods for educating future generations of such users. Such an attempt is presented here, and is of course biased by personal preferences. What emerges as general guidelines are the facts that Relativistic Electrodynamics should be presented axiomatically, without trying to "explain the physical meaning" of Special Relativity, that four-vectors and their mathematical properties should be emphasized, and that the field tensors, an elegant formalism, albeit of limited practical use, should be avoided. Use of four-fold Fourier transforms not only greatly simplifies the relevant manipulations, it is also of paramount importance for discussion of dispersive media. This approach yields many concepts as mathematical results, e.g., the Relativistic Doppler effect, which therefore do not require a long phenomenological discussion with many "explanations". Introducing this approach as early as possible opens new vistas for the student and the educator, indeed some of the new results here do not appear in textbooks on Special Relativity. One of the main results shown here is the fact that the generalized Fermat principle states that the ray will propagate in such a manner that the proper time will be minimized (or extremized, in general). It also strips the mystique of this principle, showing that it is in fact equivalent to a modest mathematical condition on the smoothness of the phase function. The presentation is constructed in a way

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Section: Dispersion Equations In Moving Mediamentioning

confidence: 99%

Section: Application To Hamiltonian Ray Propagationmentioning

confidence: 99%

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Application-Oriented Relativistic Electrodynamics (2)

Censor¹

2000

PIER

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“…7), the propagation characteristics of EM wave with the slab will be different due to relativistic effect. Power reflection and transmission coefficients of an normally incident EM wave on a moving plasma slab with uniform velocity (v) can be determined by imposing boundary conditions in the primed frame, followed by the relativistic transformations of plasma parameters from primed to un-primed frame (Chawla and Unz 1969). Due to motion of plasma slab, the reflected frequency and the wave number suffer Doppler effect, whereas the transmitted frequency and the wave number remain unaffected.…”

Section: Moving Plasma Slabmentioning

confidence: 99%

Plasma-based Radar Cross Section Reduction

Singh¹,

Antony²,

Jha³

2015

SpringerBriefs in Electrical and Computer Engineering

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The concealment of aircraft from radar sources or stealth is achieved either through shaping, or radar absorbing coatings, or engineered materials, or plasma, etc. Plasma-based stealth is a radar cross-section (RCS) reduction technique associated with the reflection and absorption of incident electromagnetic (EM) wave by the plasma layer surrounding the structure. Plasma cloud covering the aircraft may give rise to other signatures such as thermal, acoustic, infrared, or visual. Thus it is a matter of concern that the RCS reduction by plasma enhances its detectability due to other signatures. This needs a careful approach toward the plasma generation and its EM wave interaction. This book presents a comprehensive review of the plasma-based stealth, covering the basics, methods, parametric analysis, and challenges toward the realization of the idea. The book starts with the basics of EM wave interactions with plasma, briefly discusses the methods used to analyze the propagation characteristics of plasma, and its generation. It presents the parametric analysis of propagation behavior of plasma, and the challenges in the implementation of plasma-based stealth technology. This review serves as a starting point for graduate and research students, scientists, and engineers working in the area of low-observables and stealth technology.

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“…When an EM wave travelling in one medium is incident upon a second medium, it is partially reflected and partially transmitted. Total fields of a wave at any point after with normal incidence on a perfect conductor [6] Resultant electric field, …”

Section: Introductionmentioning

confidence: 99%

Measure of reflection and transmission coefficients for bone tissues

Kumar¹,

Raju²

2015

International Journal of Innovative Research in Electrical, Ele

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Abstract:In this paper we analyzed the behavior of the Electromagnetic waves on some of the human tissues. As Electromagnetic waves propagate from one homogeneous medium to another, they experience a change of the wave impedance in the interface. The impedance mismatch generally leads to the reflection, absorption, and transmission of Electromagnetic waves. In the case of non homogeneous media like a human body, it is complex to analyze the behavior of Electromagnetic waves. The reflection and transmission coefficients vary from tissue to tissue and they are dependent on permittivity, conductivity, conductivity and frequency. Moreover, these fundamental parameters are also dependent on frequency. The frequency dependent reflection and transmission coefficients of some human tissues, especially bone tissues are computed at frequency range 0 to 10 GHZ using MATLAB.

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Reflection and transmission of electromagnetic waves normally incident on a plasma slab moving uniformly along a magnetostatic field

Cited by 25 publications

References 13 publications

Application-Oriented Relativistic Electrodynamics (2)

Application-Oriented Relativistic Electrodynamics (2)

Plasma-based Radar Cross Section Reduction

Measure of reflection and transmission coefficients for bone tissues

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