Frequency Response Calculations Of Input Characteristics Of Cavity Backed Aperture Antennas Using Awe With Hybrid Fem Mom Technique
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Frequency Response Calculations Of Input Characteristics Of Cavity Backed Aperture Antennas Using Awe With Hybrid Fem Mom Technique
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Author : C. J. Reddy
language : en
Publisher:
Release Date : 1997
Frequency Response Calculations Of Input Characteristics Of Cavity Backed Aperture Antennas Using Awe With Hybrid Fem Mom Technique written by C. J. Reddy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Aperture antennas categories.
Frequency Response Calculations Of Input Characteristics Of Cavity Backed Aperture Antennas Using Awe With Hybrid Fem Mom Technique
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-03
Frequency Response Calculations Of Input Characteristics Of Cavity Backed Aperture Antennas Using Awe With Hybrid Fem Mom Technique written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-03 with categories.
Application of Asymptotic Waveform Evaluation (AWE) is presented in conjunction with a hybrid Finite Element Method (FEM)/Method of Moments (MoM) technique to calculate the input characteristics of cavity-backed aperture antennas over a frequency range. The hybrid FEM/MoM technique is used to form an integro-partial-differential equation to compute the electric field distribution of the cavity-backed aperture antenna. The electric field, thus obtained, is expanded in a Taylor series around the frequency of interest. The coefficients of 'Taylor series (called 'moments') are obtained using the frequency derivatives of the integro-partial-differential Equation formed by the hybrid FEM/MoM technique. Using the moments, the electric field in the cavity is obtained over a frequency range. Using the electric field at different frequencies, the input characteristics of the antenna are obtained over a wide frequency band. Numerical results for an open coaxial line, probe fed cavity, and cavity-backed microstrip patch antennas are presented. Good agreement between AWE and the exact solution over the frequency range is observed. Reddy, C. J. and Deshpande, M. D. Langley Research Center NCC1-231; RTOP 522-33-11-02...
Computational Electromagnetics And Its Applications
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Author : Thomas G. Campbell
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Computational Electromagnetics And Its Applications written by Thomas G. Campbell and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
This volume contains the proceedings of the first ICASE/LaRC Work shop on Computational Electromagnetics and Its Applications conducted by the Institute for Computer Applications in Science and Engineering and NASA Langley Research Center. We had several goals in mind when we decided, jointly with the Elec tromagnetics Research Branch, to organize this workshop on Computa tional Electromagnetics ( CEM). Among our goals were a desire to obtain an overview of the current state of CEM, covering both algorithms and ap plications and their effect on NASA's activities in this area. In addition, we wanted to provide an attractive setting for computational scientists with expertise in other fields, especially computational fluid dynamics (CFD), to observe the algorithms and tools of CEM at work. Our expectation was that scientists from both fields would discover mutually beneficial inter connections and relationships. Another goal was to learn of progress in solution algorithms for electromagnetic optimization and design problems; such problems make extensive use of field solvers and computational effi ciency is at a premium. To achieve these goals we assembled the renowned group of speakers from academia and industry whose talks are contained in this volume. The papers are printed in the same order in which the talks were pre sented at the meeting. The first paper is an overview of work currently being performed in the Electromagnetic Research Branch at the Langley Research Center.
Application Of Awe Along With A Combined Fem Mom Technique To Compute Rcs Of A Cavity Backed Aperture In An Infinite Ground Plane Over A Frequency Range
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Author : C. J. Reddy
language : en
Publisher:
Release Date : 1997
Application Of Awe Along With A Combined Fem Mom Technique To Compute Rcs Of A Cavity Backed Aperture In An Infinite Ground Plane Over A Frequency Range written by C. J. Reddy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Application Of Model Based Parameter Estimation For Fast Frequency Response Calculations Of Input Characteristics Of Cavity Backed Aperture Antennas Using Hybrid Fem Mom Technique
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Author :
language : en
Publisher:
Release Date : 1998
Application Of Model Based Parameter Estimation For Fast Frequency Response Calculations Of Input Characteristics Of Cavity Backed Aperture Antennas Using Hybrid Fem Mom Technique written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Application Of Model Based Parameter Estimation For Rcs Frequency Response Calculations Using Method Of Moments
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Author :
language : en
Publisher:
Release Date : 1998
Application Of Model Based Parameter Estimation For Rcs Frequency Response Calculations Using Method Of Moments written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Nasa Langley Scientific And Technical Information Output 1997
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Author :
language : en
Publisher:
Release Date : 1998
Nasa Langley Scientific And Technical Information Output 1997 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 1999
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Government publications categories.
Computer Modeling In Engineering Sciences
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Author :
language : en
Publisher:
Release Date : 2004
Computer Modeling In Engineering Sciences written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Computer simulation categories.
Application Of Model Based Parameter Estimation For Fast Frequency Response Calculations Of Input Characteristics Of Cavity Backed Aperture Antennas Using Hybrid Fem Mom Technique
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-30
Application Of Model Based Parameter Estimation For Fast Frequency Response Calculations Of Input Characteristics Of Cavity Backed Aperture Antennas Using Hybrid Fem Mom Technique written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-30 with categories.
Model Based Parameter Estimation (MBPE) is presented in conjunction with the hybrid Finite Element Method (FEM)/Method of Moments (MoM) technique for fast computation of the input characteristics of cavity-backed aperture antennas over a frequency range. The hybrid FENI/MoM technique is used to form an integro-partial- differential equation to compute the electric field distribution of a cavity-backed aperture antenna. In MBPE, the electric field is expanded in a rational function of two polynomials. The coefficients of the rational function are obtained using the frequency derivatives of the integro-partial-differential equation formed by the hybrid FEM/ MoM technique. Using the rational function approximation, the electric field is obtained over a frequency range. Using the electric field at different frequencies, the input characteristics of the antenna are obtained over a wide frequency range. Numerical results for an open coaxial line, probe-fed coaxial cavity and cavity-backed microstrip patch antennas are presented. Good agreement between MBPE and the solutions over individual frequencies is observed. Reddy C. J. Langley Research Center NCC1-231; RTOP 522-11-41-02...