Download or read book Analysis of Electromagnetic Scattering by Open ended Waveguides Containing Complex Obstacles written by Hong-Tat Philip Law and published by . This book was released on 1990 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analytical Prediction of EM Scattering by Complex Obstacles Within Electrically Large Open Cavities written by Prabhakar Harihar Pathak and published by . This book was released on 1991 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The object of this paper is to describe an analytical technique for predicting the electromagnetic(EM) scattering by complex obstacles within electrically large open waveguide cavities. This topic is of relevance to EM scattering and EMC type applications. Figure 1(a) illustrates a general open-ended cavity configuration of interest in the present work. The fully three dimensional open waveguide cavity in Figure 1(a) is assumed to be relatively arbitrarily shaped, and the open front end of the cavity is illuminated by an arbitrarily polarized external plane wave field. The interior obstacle is assumed to be located within the cavity near the back end, and it generally contributes significantly to the fields scattered into the exterior by the entire cavity configuration. The scattering from the external features of the cavity, excluding the scattering from just the rim at the open front end, is not of interest in the present analysis. Hence, the present scattering analysis is restricted to within approximately 70 degrees from boresight with respect to the open front end; outside of this region, the scattering by the external features of the cavity are generally more significant than from the interior of the cavity. It is also assumed in the present work that the incident wave always directly illuminates the open front end.
Download or read book Electromagnetic Scattering written by Piergiorgio Uslenghi and published by Elsevier. This book was released on 2012-12-02 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic Scattering is a collection of studies that aims to discuss methods, state of the art, applications, and future research in electromagnetic scattering. The book covers topics related to the subject, which includes low-frequency electromagnetic scattering; the uniform asymptomatic theory of electromagnetic edge diffraction; analyses of problems involving high frequency diffraction and imperfect half planes; and multiple scattering of waves by periodic and random distribution. Also covered in this book are topics such as theories of scattering from wire grid and mesh structures; the electromagnetic inverse problem; computational methods for transmission of waves; and developments in the use of complex singularities in the electromagnetic theory. Engineers and physicists who are interested in the study, developments, and applications of electromagnetic scattering will find the text informative and helpful.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Electromagnetic Scattering by Obstacles Placed Within Open Cavities written by Paul R. Rousseau and published by . This book was released on 1992 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Scattering from a Class of Open ended Waveguide Discountinuities written by Ayhan Altintas and published by . This book was released on 1986 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of the Em Scattering from Arbitrary Open Ended Waveguide Cavities Using Axial Gaussian Beam Tracking written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-06 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: The electromagnetic (EM) scattering from a planar termination located inside relatively arbitrarily shaped open-ended waveguide cavities with smoothly curved interior walls is analyzed using a Gaussian Beam (GB) expansion of the incident plane wave fields in the open end. The cavities under consideration may contain perfectly-conducting interior walls with or without a thin layer of material coating, or the walls may be characterized by an impedance boundary condition. In the present approach, the GB's are tracked only to the termination of the waveguide cavity via beam reflections from interior waveguide cavity walls. The Gaussian beams are tracked approximately only along their beam axes; this approximation which remains valid for relatively well focussed beams assumes that an incident GB gives rise to a reflected GB with parameters related to the incident beam and the radius of curvature of the wall. It is found that this approximation breaks down for GB's which come close to grazing a convex surface and when the width of the incident beam is comparable to the radius of curvature of the surface. The expansion of the fields at the open end depend on the incidence angle only through the expansion coefficients, so the GB's need to be tracked through the waveguide cavity only once for a wide range of incidence angles. At the termination, the sum of all the GB's are integrated using a result developed from a generalized reciprocity principle, to give the fields scattered from the interior of the cavity. The rim edge at the open end of the cavity is assumed to be sharp and the external scattering from the rim is added separately using Geometrical Theory of Diffraction. The results based on the present approach are compared with solutions based on the hybrid asymptotic modal method. The agreement is found to be very good for cavities made up of planar surfaces, and also for cavities with curved surfaces which are not too long with respect to their width. Burkholder, R. ...
Download or read book Electromagnetic Scattering from a Class of Open ended Waveguide Discontinuities written by Ayhan Altintas and published by . This book was released on 1986 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1990 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Open Electromagnetic Waveguides written by Tullio Rozzi and published by Univ. Press of Mississippi. This book was released on 1997 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: A pioneer work addressing the twin aspects of waveguiding and radiation by means of a single mathematical formalism. Researchers Rozz and Mongiardo frontier concepts and theoretical methods for discontinuities in open, hybrid mode 3D structures using real problems taken from the fields of microwave, millimetric wave, and integrated optics. The examples they use to demonstrate this unifying concept vis a vis a fundamental modal approach for both guiding and radiation include slotted waveguides, coupled and truncated ribguides, and step discontinuities in slab waveguides. Annotation copyrighted by Book News, Inc., Portland, OR
Download or read book Time domain Analysis of Electromagnetic Scattering by Discontinuities in Waveguide written by J. C. Olivier and published by . This book was released on 1990 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Scattering from a Periodic Array of Open ended Rectangular Waveguide Apertures written by Terry Bohning and published by . This book was released on 1992 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The 1989 URSI International Symposium on Electromagnetic Theory written by and published by . This book was released on 1989 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Problems in the Theory of Electromagnetic Wave Scattering written by SUKHAREVSKY and published by IOP Publishing Limited. This book was released on 2022-10-17 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the development of electromagnetic theory in the field of scattering for a wide range of objects. Highly useful worked examples are included throughout the book to support the analysis of electromagnetic wave scattering processes.
Download or read book A Hybrid Asymptotic Modal Analysis of the Em Scattering by an Open Ended S Shaped Rectangular Waveguide Cavity written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: The electromagnetic fields (EM) backscatter from a 3-dimensional perfectly conducting S-shaped open-ended cavity with a planar interior termination is analyzed when it is illuminated by an external plane wave. The analysis is based on a self-consistent multiple scattering method which accounts for the multiple wave interactions between the open end and the interior termination. The scattering matrices which described the reflection and transmission coefficients of the waveguide modes reflected and transmitted at each junction between the different waveguide sections, as well at the scattering from the edges at the open end are found via asymptotic high frequency methods such as the geometrical and physical theories of diffraction used in conjunction with the equivalent current method. The numerical results for an S-shaped inlet cavity are compared with the backscatter from a straight inlet cavity; the backscattered patterns are different because the curvature of an S-shaped inlet cavity redistributes the energy reflected from the interior termination in a way that is different from a straight inlet cavity. Law, P. H. and Burkholder, R. J. and Pathak, P. H. Unspecified Center...
Download or read book Electromagnetic Waves written by Vitaliy Zhurbenko and published by BoD – Books on Demand. This book was released on 2011-06-21 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to various aspects of electromagnetic wave theory and its applications in science and technology. The covered topics include the fundamental physics of electromagnetic waves, theory of electromagnetic wave propagation and scattering, methods of computational analysis, material characterization, electromagnetic properties of plasma, analysis and applications of periodic structures and waveguide components, and finally, the biological effects and medical applications of electromagnetic fields.
