Books : Plane-Wave Theory of Time-Domain Fields: Near-Field Scanning Applications (IEEE Press Series on Electromagnetic Wave Theory)
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Type of bind: Hardcover
Dewey Decimal Number: 621.3824
EAN num: 9780780334281
ISBN number: 0780334280
Label: Wiley-IEEE Press
Manufacturer: Wiley-IEEE Press
Quantity: 1
Page Count: 394
Printing Date: May 27, 1999
Publishing house: Wiley-IEEE Press
Sale Popularity Level: 1966801
Studio: Wiley-IEEE Press
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Editor's Notes and Comments:
Product Description:
'This invaluable book provides a comprehensive framework for the formulation and solution ofnumerous problems involving the radiation, reception, propagation, and scattering of electromagnetic and acoustic waves. Filled with original derivations and theorems, it includes the very first rigorous development of plane-wave expansions for time-domain electromagnetic and acoustic fields.
For the past 35 years, near-field measurement techniques have been confined to the frequency domain. Now, with the publication of this book, probe-corrected near-field measurement techniques have been extended to ultra-wide-band, short-pulse transmitting and receiving antennas and transducers.
By combining unencumbered straightforward derivations with in-depth expositions of prerequisite material, the authors have created an invaluable resource for research scientists and engineers in electromagnetics and acoustics, and a definitive reference on plane-wave expansions and near-field measurements.
Featured topics include:
* An introduction to the basic electromagnetic and acoustic field equations
* A rigorous development of time-domain and frequency-domain plane-wave representations
* The formulation of time-domain, frequency-domain, and static planar near-field measurement techniques with and without probe-correction
* Sampling theorems and computation schemes for time-domain and frequency-domain fields
* Analytic-signal formulas that simplify the formulation and analysis of transient fields
* Wave phenomena, such as ``electromagnetic missiles'' encountered only in the time domain
* Definitive force and power relations for electromagnetic and acoustic fields and sources.'
Sponsored Author name:
IEEE Antennas and Propagation Society.
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This book gives a very complete, authoritative and up-to-date treatment of acoustic and electromagnetic fields generated by bounded sources from several intertwined viewpoints: (a) their representations by volume sources and by "Huygens sources" distributed over a surface enclosing the source region, (b) plane-wave spectra, (c) far fields, and (d) far-field radiation patterns. When field measurements are made in a plane outside the source region, the plane-wave spectral representation lends itself naturally to correcting for the characteristics of the probe performing the measurements to compute the true fields beyond the scan plane. This explains the subtitle "Near-field Scanning Applications." Throughout the book, the scalar (acoustic) and vector (electromagnetic) cases are treated in tandem, with the acoustic case usually preceding the algebraically more complicated electromagnetic case.
Whereas the above topics have been the subject of a number of previous studies, the novelty of the present approach is in examining them thoroughly in the time domain as well as the frequency domain. The time-domain formulations are derived in two ways: by Fourier transforming the corresponding frequency-domain expressions, and then directly in the time domain from the properties of Green functions. The identity of the results, sometimes after long and difficult mathematical manipulations, helps the reader gain confidence in the final product even if she or he was unable to follow all the details of the derivation. As a mathematician, I was especially impressed by the consistently rigorous level of the treatments. Although mathematical rigour is sometimes dismissed by engineers as largely academic, the authors give ample demonstrations of its practical necessity. For example, the proof in Sections 6.1.1 (or 7.1.3) that the probe output solves the homogeneous Helmholtz equation (or wave equation) outside the region occupied by the sources and the probe is a case study of the need to justify bringing partial differential operators under an integral sign, as a sloppy treatment simply leads to the wrong conclusion that the homogeneous equation is satisfied in all of space!
The book ends with some practical considerations on sampling and numerical applications of the foregoing results.
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