Download or read book Array Pattern Optimization written by Jafar Ramadhan Mohammed and published by BoD – Books on Demand. This book was released on 2019-03-27 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Array pattern optimization is a very important and necessary issue in the majority of modern communication systems in a variety of applications such as sonar, radar, navigation, wireless communications, and many other engineering fields. Classical methods for array pattern synthesis have worked mainly with analytical models that are linear, local and, thus, their performances were not optimum. They have always been designed with closed-form mathematical models. Unlike these analytical methods, the global optimization methods with powerful computing tools offer optimum solutions. During the last few years, the design of the antenna arrays has been a topic of significant research activity. This book presents recent advances in the field of array pattern optimization. It is targeted primarily toward students and researchers who want to be exposed to a wide variety of antenna array design and optimization. It includes five chapters as well as the introductory chapter. These five chapters are categorized into five different areas depending on the application. These applications are ordered to address interference suppression, electronic toll collection, mmWave and ultra-wideband, integrated antennas, and educational packages for modeling smart antenna for 5G wireless communications. The book has the advantage of providing a collection of applications that are entirely independent and self-contained; thus, the interested reader can choose any chapter and skip to another without losing continuity.
Download or read book Array Pattern Optimization written by Khalil Hassan Sayidmarie and published by . This book was released on 2019 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Array pattern optimization is a very important and necessary issue in the majority of modern communication systems in a variety of applications such as sonar, radar, navigation, wireless communications, and many other engineering fields. Classical methods for array pattern synthesis have worked mainly with analytical models that are linear, local and, thus, their performances were not optimum. They have always been designed with closed-form mathematical models. Unlike these analytical methods, the global optimization methods with powerful computing tools offer optimum solutions. During the last few years, the design of the antenna arrays has been a topic of significant research activity. This book presents recent advances in the field of array pattern optimization. It is targeted primarily toward students and researchers who want to be exposed to a wide variety of antenna array design and optimization. It includes five chapters as well as the introductory chapter. These five chapters are categorized into five different areas depending on the application. These applications are ordered to address interference suppression, electronic toll collection, mmWave and ultra-wideband, integrated antennas, and educational packages for modeling smart antenna for 5G wireless communications. The book has the advantage of providing a collection of applications that are entirely independent and self-contained; thus, the interested reader can choose any chapter and skip to another without losing continuity.
Download or read book Advances in Array Optimization written by Ertugrul Aksoy and published by BoD – Books on Demand. This book was released on 2020-03-04 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need to develop technology and communication necessitates the design of flexible and high-capacity radiating systems in today's communication infrastructure. In this context, antenna arrays are the ideal solution and have been one of the priority research subjects of the science community dealing with electromagnetics from past to present. Optimization of an array may be performed in various ways such as the optimization of excitation, reflector structure, feed network, etc. depending on the array structure. This book is a collection of seven research studies focused on the optimization of array structures in classical phased array or time modulation, including radiator, reflector, feed network, and radiating element optimizations.
Download or read book Phased Array Antenna Pattern Optimization with Failed Elements written by B. F Collins (II.) and published by . This book was released on 1987 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper discusses several methods of optimizing the pattern of a phased array antenna. Two methods, the gradient search algorithm method and the null displacement technique were shown to be applicable to optimizing a phased array with failed elements. The results of the study show how the pattern can be optimized depending on the scalar cost function and constraints chosen and what effects varying the complex weight of the array elements has on the pattern.
Download or read book Antenna Pattern Synthesis written by Donald R. Rhodes and published by . This book was released on 1972 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was made toward evolving a method of two-dimensional antenna pattern synthesis such that antenna specifications involving dimensionality, shape, and the constituent relations can be lated to the frequency characteristics. (Author).
Download or read book Simulation based Optimization Of Antenna Arrays written by Slawomir Koziel and published by World Scientific. This book was released on 2019-02-13 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book addresses surrogate-assisted design of antenna arrays, in particular, how surrogate models, both data-driven and physics-based, can be utilized to expedite procedures such as parametric optimization, design closure, statistical analysis, or fault detection. Algorithms and design frameworks are illustrated using a large variety of examples including real-world printed-circuit antenna and antenna array structures.This unique compendium contains introductory materials concerning numerical optimization, both conventional (gradient-based and derivative-free, including metaheuristics) and surrogate-based, as well as a considerable selection of customized procedures developed specifically to handle antenna array problems. Recommendations concerning practical aspects of surrogate-assisted multi-objective antenna optimization are also given. The methods presented allow for cost-efficient handling of antenna array design problems (involving CPU-intensive EM models) in the context of design optimization and statistical analysis, which will benefit both researchers, designers and graduate students.
Download or read book Optimization of the Antenna Pattern of a Phased Array with Failed Elements written by and published by . This book was released on 1986 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using a phased array antenna on a system can add dimensions of flexibility and control. By varying the phase and amplitude of the current exciting each element, the far field antenna pattern can be modified in such a way as to obtain a desired, optimal pattern. The purpose of this thesis is to develop a rapid compensation method for any element failures by varying the currents exciting the remaining elements. Although many methods for optimizing the pattern of a full array are available, this work is unique because it develops methods of finding the optimum pattern of an array which contains failed or missing elements. Optimization methods in the literature which were investigated include thinned array analysis, adaptive array analysis, eigenvalue methods, null displacement techniques, and assorted iterative techniques. Another method discussed in this thesis, the direct technique, originated from the need for a quick optimization method, especially when very large arrays are used. (Thesis).
Download or read book Optimization of Antenna Pattern from a Linear Array written by and published by . This book was released on 1997 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intelligent Computing Techniques for Smart Energy Systems written by Akhtar Kalam and published by Springer Nature. This book was released on 2019-12-16 with total page 1011 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book compiles the research works related to smart solutions concept in context to smart energy systems, maintaining electrical grid discipline and resiliency, computational collective intelligence consisted of interaction between smart devices, smart environments and smart interactions, as well as information technology support for such areas. It includes high-quality papers presented in the International Conference on Intelligent Computing Techniques for Smart Energy Systems organized by Manipal University Jaipur. This book will motivate scholars to work in these areas. The book also prophesies their approach to be used for the business and the humanitarian technology development as research proposal to various government organizations for funding approval.
Download or read book Optimization of the Antenna Pattern of a Phased Array with Faled Elements written by Bernard F. Collins (CAPT, USAF., II) and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Antenna Arrays Performance Limits and Geometry Optimization written by consultant expert mohamed taha and published by . This book was released on 2021-02-02 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACTThe radiation pattern of an antenna array depends strongly on the weighting methodand the geometry of the array. Selection of the weights has received extensive attention,primarily because the radiation pattern is a linear function of the weights. However, thearray geometry has received relatively little attention even though it also stronglyinfluences the radiation pattern. The reason for this is primarily due to the complex wayin which the geometry affects the radiation pattern. The main goal of this dissertation isto determine methods of optimizing array geometries in antenna arrays.An adaptive array with the goal of suppressing interference is investigated. It isshown that the interference rejection capabilities of the antenna array depend upon itsgeometry. The concept of an interference environment is introduced, which enablesoptimization of an adaptive array based on the expected directions and power of theinterference. This enables the optimization to perform superior on average, instead of forspecific situations. An optimization problem is derived whose solution yields an optimalarray for suppressing interference. Optimal planar arrays are presented for varyingnumber of elements. It is shown that, on average, the optimal arrays increase the signalto-interference-plus-noise ratio (SINR) when compared to standard arrays.Sidelobe level is an important metric used in antenna arrays, and depends on theweights and positions in the array. A method of determining optimal sidelobeminimizing weights is derived that holds for any linear array geometry, beamwidth,antenna type and scan angle. The positions are then optimized simultaneously with theoptimal weights to determine the minimum possible sidelobe level in linear arrays. Results are presented for arrays of varying size, with different antenna elements, and fordistinct beamwidths and scan angles.Minimizing sidelobes is then considered for 2D arrays. A method of determiningoptimal weights in symmetric 2D arrays is derived for narrowband and wideband cases.The positions are again simultaneously optimized with the weights to determine optimalarrays, weights and sidelobe levels. This is done for arrays with varying number ofelements, beamwidths, bandwidths, and different antenna elements.
Download or read book Genetic Algorithms in Electromagnetics written by Randy L. Haupt and published by John Wiley & Sons. This book was released on 2007-04-27 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thorough and insightful introduction to using genetic algorithms to optimize electromagnetic systems Genetic Algorithms in Electromagnetics focuses on optimizing the objective function when a computer algorithm, analytical model, or experimental result describes the performance of an electromagnetic system. It offers expert guidance to optimizing electromagnetic systems using genetic algorithms (GA), which have proven to be tenacious in finding optimal results where traditional techniques fail. Genetic Algorithms in Electromagnetics begins with an introduction to optimization and several commonly used numerical optimization routines, and goes on to feature: Introductions to GA in both binary and continuous variable forms, complete with examples of MATLAB(r) commands Two step-by-step examples of optimizing antenna arrays as well as a comprehensive overview of applications of GA to antenna array design problems Coverage of GA as an adaptive algorithm, including adaptive and smart arrays as well as adaptive reflectors and crossed dipoles Explanations of the optimization of several different wire antennas, starting with the famous "crooked monopole" How to optimize horn, reflector, and microstrip patch antennas, which require significantly more computing power than wire antennas Coverage of GA optimization of scattering, including scattering from frequency selective surfaces and electromagnetic band gap materials Ideas on operator and parameter selection for a GA Detailed explanations of particle swarm optimization and multiple objective optimization An appendix of MATLAB code for experimentation
Download or read book Game Programming Patterns written by Robert Nystrom and published by Genever Benning. This book was released on 2014-11-03 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: The biggest challenge facing many game programmers is completing their game. Most game projects fizzle out, overwhelmed by the complexity of their own code. Game Programming Patterns tackles that exact problem. Based on years of experience in shipped AAA titles, this book collects proven patterns to untangle and optimize your game, organized as independent recipes so you can pick just the patterns you need. You will learn how to write a robust game loop, how to organize your entities using components, and take advantage of the CPUs cache to improve your performance. You'll dive deep into how scripting engines encode behavior, how quadtrees and other spatial partitions optimize your engine, and how other classic design patterns can be used in games.
Download or read book Smart Intelligent Computing and Applications written by Suresh Chandra Satapathy and published by Springer Nature. This book was released on 2019-10-03 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents high-quality papers from the Third International Conference on Smart Computing and Informatics (SCI 2018−19), organized by the School of Computer Engineering and School of Computer Application, Kalinga Institute of Industrial Technology Deemed to be University, Bhubaneswar, from 21 to 22 December 2018. It includes advanced and multi-disciplinary research on the design of smart computing and informatics, focusing on innovation paradigms in system knowledge, intelligence and sustainability that have the potential to provide realistic solutions to various problems in society, the environment and industry. The papers featured provide a valuable contribution to the deployment of emerging computational and knowledge transfer approaches, optimizing solutions in varied disciplines of science, technology and health care.
Download or read book Microelectronics Electromagnetics and Telecommunications written by P. Satish Rama Chowdary and published by Springer Nature. This book was released on 2020-06-24 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the latest developments and outlines future trends in the fields of microelectronics, electromagnetics and telecommunication. It includes original research presented at the International Conference on Microelectronics, Electromagnetics and Telecommunication (ICMEET 2019), organized by the Department of ECE, Raghu Institute of Technology, Andhra Pradesh, India. Written by scientists, research scholars and practitioners from leading universities, engineering colleges and R&D institutes around the globe, the papers share the latest breakthroughs in and promising solutions to the most important issues facing today’s society.
Download or read book Handbook of Research on Emergent Applications of Optimization Algorithms written by Pandian Vasant and published by Business Science Reference. This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern optimization approaches have attracted an increasing number of scientists, decision makers, and researchers. As new issues in this field emerge, different optimization methodologies must be developed and implemented. The Handbook of Research on Emergent Applications of Optimization Algorithms is an authoritative reference source for the latest scholarly research on modern optimization techniques for solving complex problems of global optimization and their applications in economics and engineering. Featuring coverage on a broad range of topics and perspectives such as hybrid systems, non-cooperative games, and cryptography, this publication is ideally designed for students, researchers, and engineers interested in emerging developments in optimization algorithms.
Download or read book Optimization of Antenna Arrays by Simulated Annealing written by Víctor Jaime De la Rosa Pérez and published by . This book was released on 2005 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
