Propagation of electromagnetic waves in thin dielectric. The results of calculation fit the test data well and will provide solid foundation for the application of em. Some electromagnetic wave functions for propagation in stratified media 339 in the case of a homogeneous medium k is independent of 2 for fields of both types and the solutions of equation 1 may be expressed in terms of exponential functions. Co i in many fields of engmeenng and physics, there is a need to undentand how electromagnetic waves. Media of finite, semiinfinite, and infinite extent are treated. Buy electromagnetic waves in stratified media ieeeoup series on electromagnetic wave theory on free shipping on qualified orders. Propagation of electromagnetic waves generated by moving. Propagation of electromagnetic waves in anisotropic. Electromagnetic waves in stratified media 1 introduction electromagnetic wave propagation in inhomogeneous media is investigated both in the frequency domain and in the time domain. The theory of electromagnetic bloch waves in periodic stratified media is applied to the problems of birefringence and group. Review of elastic and electromagnetic wave propagation in layered media. Co i in many fields of engmeenng and physics, there is a need to undentand how electromagnetic waves interact with solid, liquid, and gaseous media.
Electromagnetic waves in stratified media ieeeoup series. The propagation of the electromagnetic waves in a medium free of charges and currents is described by the wave equation 2 2 2. For perpendicular polarization the electric and magnetic fields are determined by e x, the xcomponent of the electric field. The electromagneticwave propagation through a stratified inhomogeneous anisotropic medium by f. Propagation of electromagnetic waves in thin dielectric and.
Soerensen ibm research division, zurich research laboratory, 8803 riischlikon, switzerland received 19 june 1987 we explore the wave number dependence of the transmission of electromagnetic waves in quasiperiodic. Therefore, the optimum frequency range exists only for small propagation depths less than 5 m. Double refraction birefringence, optical rotation, polarization effects, electrooptical effects. Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another, or into various parts of the atmosphere. Electromagnetic propagation along stratified media. Visible light is a commonly studied form of electromagnetic radiation, and exhibits oscillating electric and magnetic fields whose amplitudes and directions are represented by. Based on maxwell equations, the equivalent model is proposed to calculate the dielectric permittivity of mixed soil. Electromagnetic wave propagation in inhomogeneous media is investigated both in the frequency domain and in the time domain. There has been enormous interest in the design and development of periodic electromagnetic emoptical structures. Electromagnetic wave propagation in complex dispersive media associate professor department of mathematics workshop on quanti cation of uncertainties in material science january 15, 2016 n.
Electromagnetic inverse scattering for stratified media. Doppler shift is inversely proportional to propagation velocity, so is much smaller for electromagnetic signals. General theory pochi yeh, amnon yariv, and chishain hong california institute of technology, pasadena, california 91125 received 8 november 1976 the propagation of electromagnetic radiation in periodically stratified media is considered. In this chapter, we will study electromagnetic wave propagation in conductors, dielectrics and plasmas. Electromagnetic wave propagation in complex dispersive media. The bloch waves are normal modes of propagation so and each mode is composed of plane wave components of amplitude ek2. That is, the inhomogeneous isotropic medium under consideration then behaves. Price contribution from the stanford research institute, menlo park, calif. Volume 3 of international series of monographs on electromagnetic waves. This book discusses the important feature of the waves that enables communications at global distances. For such a plane wave penetrating the fresh water, the total power loss is the sum of the trans. Ch 6, bloch waves in layered media the bloch waves are normal modes of propagation so and each mode is composed of plane wave components of amplitude ek2.
Electromagnetic properties of a finely stratified medium 467 directions of propagation and for different polari zations. The relevance of periodic media to phase matching in nonlinear mixing experiments and to laser action in the xray region is discussed. The fundamental parameters such as dielectric permittivity and magnetic permeability are required to solve the propagation of electromagnetic wave em wave in the soil. The theory of electromagnetic bloch waves in periodic stratified media is applied to the problems of birefringence and group velocity in these media. Pdf the objective of this paper is to provide a unified treatment of elastic eand electromagnetic em. Optical waves and beams in layered isotropic and anisotropic media. Excitation of spolarized surface electromagnetic waves in. Some new phenomena with applications to integrated optics and. Electromagnetic propagation in periodic media the propagation of em radiation in periodic media. Bloch waves and bandgaps chapter 6 physics 208, electrooptics peter beyersdorf 1.
Such applications require accurate propagation predictions for a variety of path conditions, and this book. Propagation of electromagnetic waves in extremely dense media. Propagation of electromagnetic waves through a continuously varying stratified anisotropic medium gary h. Electromagnetic waves can be generated by a variety of methods, such as a discharging spark or by an oscillating molecular dipole. Electromagnetic wave propagation in quasiperiodically. Electromagnetic fields in stratified media kai li springer. General theory pochi yeh, amnon yariv, and chishain hong california institute of technology, pasadena, california 91125 received 8 november 1976 the propagation of electromagnetic radiation in periodically stratified media is. Comparisons of electromagnetic fields generated by vertical electric dipole in the air and horizonal electric dipole in the. Electromagnetic waves in stratified media ieeeoup series on. A diagonalization of the unit cell translation operator is used to obtain exact solutions for the bloch waves, the dispersion relations, and the band structure of the medium. Study of electromagnetic wave propagation in active medium.
Understanding the effects of varying conditions on radio. California institute of technology, pasadena, california 91125 received 8 november 1976 the propagation of electromagnetic radiation in periodically stratified media is considered. Slf waves travel in the air as vertical polarized vaves while as horizonal polarized vaves in the seawater,which have less attenuation than vlf waves. Frequencydependent impedance and surface waves on the boundary of a stratified dielectric medium. Electromagnetic propagation how is electromagnetic. International series of monographs in electromagnetic waves, volume 3. Interface between two semiinfinite media fresnel reflection coefficient this situation can be mimicked by setting d2 0 into equation. In other words, interfaces 1 and 2 in figure 1 collapse into one single interface separating two semiinfinite media of refractive index n1 and n2.
Electromagnetic waves in stratified media this book 1 was written at an important point in the development of applications of electromagnetic radio waves to communications, navigation, and remote sensing. And actually some of them are joining us this year, as a matter of fact. E and d are parallel and transverse b and h are perpend to them, also transverse. Propagation of electromagnetic waves in anisotropic photonic. Electromagnetic waves in stratified media volume 3 of international series of monographs on electromagnetic waves, issn 05389992 pergamon press book. Propagation of electromagnetic waves in extremely dense. Above 10khz, electromagnetic propagation is more than a hundred times faster than acoustic.
Propagation of electromagnetic beams of any state of. Oblique frozen modes in periodic layered media uci math. Soerensen ibm research division, zurich research laboratory, 8803 riischlikon, switzerland received 19 june 1987 we explore the wave number dependence of the transmission of electromagnetic waves in quasiperiodic dielectric multilayers. Propagation in lossy media, complex waves daniel sj oberg department of electrical and information technology.
Pdf electromagnetic wave propagation in almost periodic. Propagation of electromagnetic waves through a continuously. Electromagnetic waves in stratified media 1 introduction. Section 4 is comprised of electromagnetic properties of a superdense system and discuss the behavior of electric permittivity and magnetic permeability at large values of chemical potential. Electromagnetic waves and antennas rutgers university. Applying the twodimensional stationary phase method to the integrals, we obtain explicit formulas for the electromagnetic field and for the doppler effects. The analysis of propagation of the electromagnetic waves in periodic 3,11,15, quasiperi.
In this section, we model a plane wave impinging on an airwater interface assuming the depth of water is infinite see. The theory of electromagnetic bloch waves in periodic stratified media is applied to the problems of. Crystals such as calcite, quartz, kdp, and liquid crystals. Electromagnetic propagation in anisotropic media optical properties depend on the direction of propagation and the polarization of the light. Electromagnetic fields in stratified media deals with an important branch of electromagnetic theory, which has many useful applications in subsurface communication, radar, and geophysical prospecting and diagnostics. Propagation of electromagnetic wave in the three phases. Our research is to investigate systematically the inverse scattering of acoustic and electromagnetic waves by obstacles or inhomogeneity in a stratified host medium. Coverage includes fourier series and transforms, applications to acoustic and electromagnetic propagation models, transmission and emission tomography and image reconstruction, optimization techniques, and highresolution methods, among other topics.
The problem of electromagnetic wave propagation in almost periodic media is investigated and a solution is obtained directly from maxwells equations. By stratified host medium we mean that the refractive index a quantity for describing the inhomogeneity of the medium of the medium is a function of one variable except in a. An iterative technique for calculating the propagation coefficient for electromagnetic waves traveling along a stratified medium. Frequency propagation characteristics in a simulated earthionosphere model ieee transactions on communications 22 4 pp. Lecture notes 6 electromagnetic waves in matter electromagnetic wave propagation in linear media we now consider em wave propagation inside linear matter, but only in regions where there are no free charges free 0 andor free currents kfree 0 i.
As a form of electromagnetic radiation, like light waves, radio waves are affected by the phenomena of reflection, refraction, diffraction, absorption, polarization, and scattering. Some electromagnetic wave functions for propagation in. As an application of our approach, we consider the propagation of electromagnetic waves produced by moving source in a cold nonmagnetized plasma and the cherenkov radiation in dispersive. Department of bengurion university of the negev the direction. Periodic media many useful materials and devices may have an. Effective medium model for a periodic array of metallic carbon nanotubes and eigenwaves propagating. Slf electromagnetic fields in stratified media scientific.
The bloch waves are normal modes of propagation so and each mode is composed of plane wave. Propagation of electromagnetic waves in extremely dense media samina masood a and iram saleem b, a department of physical and applied sciences, university of houstonclear lake, houston, tx, 77058, usa b department of physics and texas center for superconductivity, university of houston, houston, tx, 77204, usa corresponding author email address. Consider a linear, homogeneous, isotropic media characterized by. Section 3 is completely devoted to the study of the longitudinal and the transverse components of electromagnetic waves in extremely dense systems. This has important advantages for command latency and networking protocols, where many signals have to be exchanged. We present a theory of propagation of a partially coherent and partially polarized electromagnetic beam through a multilayered stratified medium. Electromagnetic waves maxwells equations predict the propagation of electromagnetic energy away from timevarying sources current and charge in the form of waves. A pedagogical presentation of the propagation of electromagnetic waves in stratified media is given. Electromagnetic propagation in birefringent layered media. Progress in electromagnetics research, pier 48, 6783, 2004 theelectromagneticwavepropagation throughastratifiedinhomogeneous anisotropicmedium.
The wave equation for linear shallow water waves propagating over a varying bottom topography has the same form as that for ppolarized electromagnetic waves in inhomogeneous dielectric media. Electromagnetic wave propagation in almost periodic media article pdf available in ieee transactions on antennas and propagation 271. Wait guides you through a broad range of physical problems using a wealth of experimental data that is particularly relevant to current studies of radiowave transmission in both terrestrial and extraterrestrial environments. In the present paper we combine the above two open directions and discuss the case of a two component. The electromagneticwave propagation through a medium consisting of two dielectric halfspaces with a plate in between, has been investigated.
Physica 148a 1988 343355 northholland, amsterdam electromagnetic wave propagation in quasiperiodically stratified media d. Propagation of electromagnetic beams of any state of spatial coherence and polarization through multilayered stratified media. Therefore, as the depth increases it reaches a value for which the propagation loss becomes larger than the transmission loss. Electromagnetic waves in stratified media provides information pertinent to the electromagnetic waves in media whose properties differ in one particular direction. For parallel polarization the electric and magnetic fields are determined by hx, the xcomponent. Electromagnetic propagation in periodic stratified media.
Electromagnetic wave propagation florida state university. Electromagnetic propagation synonyms, electromagnetic propagation pronunciation, electromagnetic propagation translation, english dictionary definition of electromagnetic propagation. Recent approaches to the time domain involve imbedding, greens functions methods and wave splitting techniques 14. Electromagnetic waves in stratified media we consider plane electromagnetic waves incident from a medium of index nj onto a nonmagnetic planar stratification, whose optical properties are contained in the dielectric function ez n2z nz is the local value of the 1 refractive index. The propagation of electromagnetic radiation in periodically stratified media is considered. Electromagnetic waves in stratified media volume 3 of international series of monographs on electromagnetic waves volume 3 of international series of monographs in the science of the solid state pergamon press book volume 3 of wennergren center international symposium series. It propagates as lateral electromagnetic wave from seawater into air,whose energy will be concentrated on the interface. Bloch waves and bandgaps san jose state university. As is shown below, for sufficiently long waves the effective properties of the medium are especially simple. Electromagnetic propagation definition of electromagnetic. Electromagnetic waves in stratified media 1st edition. The basic problems we consider are the inverse scattering of timeharmonic acoustic or electromagnetic waves by a penetrable non stratified inhomogeneous medium of compact support and by a bounded impenetrable obstacle in a stratified host medium. For magnetic type fields the homogeneous model is the only one giving rise to constant values of k.
Electromagnetic properties of periodic stratified media have been a subject of. Long recognized as a classic in the field, this book offers comprehensive coverage of radio waves in stratified media. The dominating e ect of wave propagation in lossy media is exponential decrease of the amplitude of the wave. The strata are required only to be parallel and to have scalar electrical parameters. The book introduces to the electromagnetic theory and wave propagation in. In other words, interfaces 1 and 2 in figure 1 collapse into one single interface separating two semiinfinite media of refractive index n1 and n2 characteristic matrix in equation can be used to find the matrix system for two semiinfinite media.
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