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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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.
Handbook Of Reflector Antennas And Feed Systems Volume Ii Feed Systems
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Author : Lotfollah Shafai
language : en
Publisher: Artech House
Release Date : 2013-07-01
Handbook Of Reflector Antennas And Feed Systems Volume Ii Feed Systems written by Lotfollah Shafai and has been published by Artech House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-07-01 with Technology & Engineering categories.
This is the first truly comprehensive and most up-to-date handbook available on modern reflector antennas and feed sources for diversified space and ground applications. There has never been such an all-encompassing reflector handbook in print, and no currently available title offers coverage of such recent research developments. The Handbook consists of three volumes. Volume II focuses on feed sources. Reflector antennas are extraordinary devices that combine high gain with geometrical simplicity, and can operate in broad frequency bands. Their performance, however, depends on the electrical characteristics of the feed system with which they operate. This comprehensive volume provides you with a solid understanding of feed system theory, design, and analysis. Featuring chapters authored by experts in each aspect of feed systems, this book takes you from fundamental mathematical techniques, electrically small and large dual reflectors, feed geometry and telemetry, tracking and command antennas, and more. Throughout the book numerous examples are provided to guide you in the practical aspects of feed design.
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...
Nasa Langley Scientific And Technical Information Output 1998
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Author :
language : en
Publisher:
Release Date : 1999
Nasa Langley Scientific And Technical Information Output 1998 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 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.
Dissertation Abstracts International
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Author :
language : en
Publisher:
Release Date : 1997
Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Dissertations, Academic categories.
International Aerospace Abstracts
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Author :
language : en
Publisher:
Release Date : 1996
International Aerospace Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Aeronautics categories.
Electromagnetics And Network Theory And Their Microwave Technology Applications
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Author : Stefan Lindenmeier
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-07-13
Electromagnetics And Network Theory And Their Microwave Technology Applications written by Stefan Lindenmeier 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 2011-07-13 with Technology & Engineering categories.
This volume provides a discussion of the challenges and perspectives of electromagnetics and network theory and their microwave applications in all aspects. It collects the most interesting contribution of the symposium dedicated to Professor Peter Russer held in October 2009 in Munich.
Electromagnetic Simulation Using The Fdtd Method
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Author : Dennis M. Sullivan
language : en
Publisher: John Wiley & Sons
Release Date : 2013-05-17
Electromagnetic Simulation Using The Fdtd Method written by Dennis M. Sullivan and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-05-17 with Science categories.
A straightforward, easy-to-read introduction to the finite-difference time-domain (FDTD) method Finite-difference time-domain (FDTD) is one of the primary computational electrodynamics modeling techniques available. Since it is a time-domain method, FDTD solutions can cover a wide frequency range with a single simulation run and treat nonlinear material properties in a natural way. Written in a tutorial fashion, starting with the simplest programs and guiding the reader up from one-dimensional to the more complex, three-dimensional programs, this book provides a simple, yet comprehensive introduction to the most widely used method for electromagnetic simulation. This fully updated edition presents many new applications, including the FDTD method being used in the design and analysis of highly resonant radio frequency (RF) coils often used for MRI. Each chapter contains a concise explanation of an essential concept and instruction on its implementation into computer code. Projects that increase in complexity are included, ranging from simulations in free space to propagation in dispersive media. Additionally, the text offers downloadable MATLAB and C programming languages from the book support site (http://booksupport.wiley.com). Simple to read and classroom-tested, Electromagnetic Simulation Using the FDTD Method is a useful reference for practicing engineers as well as undergraduate and graduate engineering students.
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...