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Far Field Predictions From Near Field Measurements Using The Three Dimensional Finite Element And Boundary Integral Methods
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Book Synopsis Far-field Predictions from Near-field Measurements Using the Three Dimensional Finite Element and Boundary Integral Methods by : Rédouane Laroussi
Download or read book Far-field Predictions from Near-field Measurements Using the Three Dimensional Finite Element and Boundary Integral Methods written by Rédouane Laroussi and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characterizing antenna designs in their operational modes has been a classic problem for electromagnetic engineers for many years. The far-field pattern is of great importance in antenna characterization, but in many cases, it is impossible or at least impractical to measure directly. This thesis presents a numerical technique whereby near-field measurements can be transformed into far-field solutions. The finite element method (FEM), and an integral formulation, solution to the scattering problem, are used separately to solve the open boundary wave propagation problem in three dimensions. The near-field of a known source is sampled over a mesh of points and used as data for both methods. The integral formulation yields the far-field solution for homogeneous problems without the need for space discretization. The finite element method uses tetrahedral elements for discretizing the domain of interest and second order interpolation functions. It is complemented by the application of an absorbing boundary condition (ABC) which allows truncation of the domain. Classical ABCs of the local type are applied to the three dimensional problem. A new non-local ABC is obtained from the integral formulation and is coupled to the finite element approach. Computed field strengths obtained with the different approaches are compared with the analytical results obtained from the excitation source's analytical expression. The agreement was very good with maximum error percentages of about 10% for the FEM method and 2.5% for the integral formulation.
Book Synopsis Far-field Predictions from Near-field Measurements Using the Three Dimensional Finite Elements and Boundary Integral Methods by : Rédouane Laroussi
Download or read book Far-field Predictions from Near-field Measurements Using the Three Dimensional Finite Elements and Boundary Integral Methods written by Rédouane Laroussi and published by . This book was released on 1992 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characterizing antenna designs in their operational modes has been a classic problem for electromagnetic engineers for many years. The far-field pattern is of great importance in antenna characterization, but in many cases, it is impossible or at least impractical to measure directly.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
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Book Synopsis Journal of Research of the National Bureau of Standards by : United States. National Bureau of Standards
Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1988 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Journal of the Acoustical Society of America by : Acoustical Society of America
Download or read book The Journal of the Acoustical Society of America written by Acoustical Society of America and published by . This book was released on 2000 with total page 1528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Symposium Digest, Antennas and Propagation by :
Download or read book International Symposium Digest, Antennas and Propagation written by and published by . This book was released on 1988 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 1988 International Symposium Digest by :
Download or read book 1988 International Symposium Digest written by and published by . This book was released on 1987 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering written by and published by . This book was released on 1993 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
Book Synopsis Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 261) by :
Download or read book Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 261) written by and published by . This book was released on 1991 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Cumulative Index to a Continuing Bibliography on Aeronautical Engineering by :
Download or read book A Cumulative Index to a Continuing Bibliography on Aeronautical Engineering written by and published by . This book was released on 1986 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanics of Jointed and Faulted Rock by : Hans Peter Rossmanith
Download or read book Mechanics of Jointed and Faulted Rock written by Hans Peter Rossmanith and published by CRC Press. This book was released on 2020-12-18 with total page 1848 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the implementation and application of new concepts and methods to modelling, analysis, building, performance control and repair of structures of and in jointed rock and rock masses. It provides a forum for presentation of new research results and discussion for researchers.
Download or read book Newsletter written by and published by . This book was released on 1997 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Book Synopsis Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards by :
Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2005 with total page 998 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theses on any subject submitted by the academic libraries in the UK and Ireland.
