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Analysis Of Electromagnetic Scattering From Irregularly Shaped Thin Metallic Flat Plates
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Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781729303696 Total Pages :56 pages Book Rating :4.3/5 (36 download)
Book Synopsis Analysis of Electromagnetic Scattering from Irregularly Shaped, Thin, Metallic Flat Plates by : National Aeronautics and Space Adm Nasa
Download or read book Analysis of Electromagnetic Scattering from Irregularly Shaped, Thin, Metallic Flat Plates written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-10-26 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes an application of the method of moments to calculate the electromagnetic scattering from irregularly shaped, thin, metallic flat plates in free space. In the present technique, an irregularly shaped plate is enclosed by a rectangle on which the surface-current density is then expressed in terms of subdomain functions by dividing the rectangle into subsections. A shape function is introduced to ensure zero current outside the patch. The surface-current density is determined using the electric field integral equation (EFIE) approach in conjunction with the method of moments, and from a knowledge of the surface-current density, the electromagnetic scattering from a plate is calculated. Using this technique, the electromagnetic scattering from a hexagonal plate; an equilateral triangular plate; an equilateral triangular plate with a concentric, equilateral triangular hole and an inverted, equilateral triangular hole; and a diamond-shaped plate is computed and compared with the numerical results obtained by using the Electromagnetic Surface Patch (ESP) code developed by Ohio State University. The numerical results compare favorably with the measurements performed on these shapes in the Langley Experimental Test Range facility. Deshpande, Manohar D. and Cockrell, C. R. and Beck, Fred B. and Vedeler, Erik and Koch, Melissa B. Langley Research Center
Book Synopsis Analysis of Electromagnetic Scattering from Irregularly Shaped, Thin, Metallic Flat Plates by : Manohar D. Deshpande
Download or read book Analysis of Electromagnetic Scattering from Irregularly Shaped, Thin, Metallic Flat Plates written by Manohar D. Deshpande and published by . This book was released on 1993 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electromagnetic Scattering From a Polygonal Thin Metallic Plate Using Quadrilateral Meshing by : Manohar D. Deshpande
Download or read book Electromagnetic Scattering From a Polygonal Thin Metallic Plate Using Quadrilateral Meshing written by Manohar D. Deshpande and published by DIANE Publishing. This book was released on 2003 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resonant Frequencies of Irregularly Shaped Microstrip Antennas Using Method of Moments by : Manohar D. Deshpande
Download or read book Resonant Frequencies of Irregularly Shaped Microstrip Antennas Using Method of Moments written by Manohar D. Deshpande and published by . This book was released on 1993 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electromagnetic Scattering From a Polygonal Thin Metallic Plate Using Quadrilateral Meshing by :
Download or read book Electromagnetic Scattering From a Polygonal Thin Metallic Plate Using Quadrilateral Meshing written by and published by . This book was released on 2003 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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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:
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Book Synopsis Characteristic Modes by : Yikai Chen
Download or read book Characteristic Modes written by Yikai Chen and published by John Wiley & Sons. This book was released on 2015-06-15 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes how to systematically implement various characteristic mode (CM) theories into designs of practical antenna systems This book examines both theoretical developments of characteristic modes (CMs) and practical developments of CM-based methodologies for a variety of critical antenna designs. The book is divided into six chapters. Chapter 1 provides an introduction and discusses the recent advances of the CM theory and its applications in antenna engineering. Chapter 2 describes the formulation of the characteristic mode theory for perfectly electrically conducting (PEC) bodies and discusses its numerical implementations. Chapter 3 presents the CM theory for PEC structures embedded in multilayered medium and its applications. Chapter 4 covers recent advances in CM theory for dielectric bodies and also their applications. Chapter 5 discusses the CM theory for N-port networks and its applications to the design of antenna arrays. Finally, Chapter 6 discusses the design of platform-integrated antenna systems using characteristic modes. This book features the following: Introduces characteristic mode theories for various electromagnetic structures including PEC bodies, structures in multilayered medium, dielectric bodies, and N-port networks Examines CM applications in electrically small antennas, microstrip patch antennas, dielectric resonator antennas, multiport antennas, antenna arrays, and platform mounted antenna systems Discusses numerical algorithms for the implementation of the characteristic mode theories in computer code Characteristic Modes: Theory and Applications in Antenna Engineering will help antenna researchers, engineers, and students find new solutions for their antenna design challenges.
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Book Synopsis Electromagnetic Scattering Analysis of a Three-dimensional-cavity-backed Aperture in an Infinite Ground Plane Using a Combined Finite Element Method/method of Moments Approach by :
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Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781723722387 Total Pages :42 pages Book Rating :4.7/5 (223 download)
Book Synopsis Electromagnetic Scattering from a Polygonal Thin Metallic Plate Using Quadrilateral Meshing by : National Aeronautics and Space Adm Nasa
Download or read book Electromagnetic Scattering from a Polygonal Thin Metallic Plate Using Quadrilateral Meshing written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-15 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem of electromagnetic (EM) scattering from irregularly shaped, thin, metallic flat plates in free space is solved using the electric field integral equation (EFIE) approach in conjunction with the method of moments (MoM) with quadrilateral meshing. An irregularly shaped thin plate is discretized into quadrilateral patches and the unknown electric surface current over the plate is expressed in terms of proper basis functions over these patches. The basis functions for the electric surface current density that satisfy the proper boundary conditions on these quadrilateral patches are derived. The unknown surface current density on these quadrilateral patches is determined by setting up and solving the electric field integral equation by the application of the MoM. From the knowledge of the surface current density, the EM scattering from various irregularly shaped plates is determined and compared with the earlier published results. The novelty in the present approach is the use of quadrilateral patches instead of well known and often used triangular patches. The numerical results obtained using the quadrilateral patches compare favorably with measured results.Deshpande, Manohar D.Langley Research CenterELECTROMAGNETIC SCATTERING; METHOD OF MOMENTS; FLAT PLATES; COMPUTATIONAL GRIDS; ELECTRIC CURRENT; CURRENT DENSITY; SURFACE PROPERTIES; INTEGRAL EQUATIONS; MATHEMATICAL MODELS; BOUNDARY CONDITIONS; NUMERICAL ANALYSIS
