Non-stationary Electromagnetics


Book Description

This book is devoted to investigations of non-stationary electromagnetic processes. It offers a good opportunity to introduce the Volterra integral equation method more widely to the electromagnetic community. The explicit mathematical theory is combined with examples of its application in electromagnetic devices, optoelectronics, and photonics, wh




Non-Stationary Electromagnetics


Book Description

This book is devoted to the investigations of non-stationary electromagnetic processes. The investigations are undertaken analytically mainly using the Volterra integral equations approach. The book contains a systematic statement of this approach for the investigations of electrodynamics phenomena in the time domain and new results and applications in microwave techniques and photonics. Particular consideration is given to electromagnetic transients in time-varying media and their potential applications. The approach is formulated and electromagnetic phenomena are investigated in detail for a hollow metal waveguide, which contains moving dielectric or plasma-bounded medium, and dielectric waveguides with time-varying medium inside a core.







Inverse Problems in Electric Circuits and Electromagnetics


Book Description

This is the first book to offer a comprehensive exploration of new methods in inverse problems in electromagnetics. The book provides systematic descriptions of the most important practical inverse problems, and details new methods to solve them. Also included are descriptions of the properties of inverse problems and known solutions, as well as reviews of the practical implementation of these methods in electric circuit theory and electromagnetic fields theory. This comprehensive collection of modern theoretical ideas and methods to solve inverse problems will be of value to both students and working professionals.







Equations Governing the Propagation of Second-Order Correlations in Non-Stationary Electromagnetic Fields


Book Description

The main results derived by E. Wolf and P. Roman, relating to the propagation of second-order correlations in electromagnetic fields are generalized to the case of a non-stationary field containing currents and charges. The basic differential equations relating the correlations are derived. They fall into two groups, one of which contains only differential equations of the first order, but involves certain parameters that seem difficult to be determined experimentally. When these quantities are eliminated a second set of equations is obtained. Equations of this set are of a higher order but they contain only the electric and the magnetic correlation tensors and a tensor characterizing the correlation in the electric currents.




Electromagnetic Wave Theory


Book Description

Electromagnetic Wave Theory, Part 2 contains the proceedings of a Symposium on Electromagnetic Wave Theory held at Delft, The Netherlands in September 1965. The symposium provided a forum for discussing electromagnetic wave theory and tackled a wide range of topics, from propagation in nonlinear media to electromagnetic wave propagation and amplification in solid-state plasmas. Electromagnetic waves in nonlinear transmission lines with active parameters are also considered, along with the phase dependence of maser active material Q-factor on pump intensity and frequency. Comprised of four sections, this volume begins with an analysis of two modes of propagation that are coupled through parametric modulation in nonlinear media. The discussion then turns to symmetry restrictions in nonlinear, non-absorbing, non-dispersive media; nonlinear interaction between two beams of plane electromagnetic waves in an anisotropic medium; radiation in periodically non-stationary media; and electromagnetic wave propagation in time-varying media. Subsequent chapters explore the diffraction of electromagnetic waves by plasma structures; resonant electromagnetic scattering from gyrotropic plasmas; scattering and transmission of electromagnetic waves at a statistically rough boundary between two dielectric media; and developments in wavefront reconstruction. This book will be useful for students, practitioners, and researchers in physics.




Equations Governing the Propagation of Second-order Correlations in Non-stationary Electromagnetic Fields


Book Description

The main results derived by E. Wolf and P. Roman, relating to the propagation of second-order correlations in electromagnetic fields are generalized to the case of a non-stationary field containing currents and charges. The basic differential equations relating the correlations are derived. They fall into two groups, one of which contains only differential equations of the first order, but involves certain parameters that seem difficult to be determined experimentally. When these quantities are eliminated a second set of equations is obtained. Equations of this set are of a higher order but they contain only the electric and the magnetic correlation tensors and a tensor characterizing the correlation in the electric currents.




The Theory of Electricity


Book Description




Localization of Non-Stationary Sources of Electromagnetic Radiation with the Aid of Phasometry


Book Description

The possibility of localizing sources of electromagnetic radiation by measurement of the time of passage of the radiation or the measurement of its phase at various points of cosmic space, at which are located satellite observatories is examined. Algorithms are proposed for localization using two, three, and four astronomical observatories. The precision of the localization and several partial results of practical significance are deduced. Mersov, G. A. Unspecified Center NASA-TM-75545, PR-286 NASW-3199