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1000 tulosta hakusanalla Randy L. Haupt

Antenna Arrays

Antenna Arrays

Randy L. Haupt

John Wiley Sons Inc
2010
sidottu
A comprehensive tutorial on the design and practical applications of antenna arrays An antenna array is an assembly of antenna elements that maximizes a received or transmitted signal in a desired direction. This practical book covers a wide range of antenna array topics that are becoming increasingly important in wireless applications, with emphasis on array design, applications, and computer modeling. Each chapter in Antenna Arrays builds upon the previous chapter, progressively addressing more difficult material. Beginning with basic electromagnetics/antennas/antenna systems information, the book then deals with the analysis and synthesis of arrays of point sources and their associated array factors. It presents a sampling of different antenna elements that replace these point sources, then presents element configurations that do not have to lie along a line or in a plane. The complex and difficult-to-predict interactions of elements and electromagnetic waves are introduced, along with computer modeling and experiments that are necessary for predicting the performance of arrays where mutual coupling is important. Then, various approaches to getting signals to and from the array elements to a computer where the signal detection takes place are explored, as are the numerical techniques behind smart antennas. The book emphasizes the computational methods used in the design and analysis of array antennas. Also featured are signal processing and numerical modeling algorithms, as well as pictures of antenna arrays and components provided by industry and government sources, with explanations of how they operate. Fully course-tested, Antenna Arrays serves as a complete text in phased array design and theory for advanced undergraduate- and graduate-level courses in electronics and communications, as well as a reference for practicing engineers and scientists in wireless communications, radar, and remote sensing.
Timed Arrays

Timed Arrays

Randy L. Haupt

John Wiley Sons Inc
2015
sidottu
Introduces timed arrays and design approaches to meet the new high performance standards The author concentrates on any aspect of an antenna array that must be viewed from a time perspective. The first chapters briefly introduce antenna arrays and explain the difference between phased and timed arrays. Since timed arrays are designed for realistic time-varying signals and scenarios, the book also reviews wideband signals, baseband and passband RF signals, polarization and signal bandwidth. Other topics covered include time domain, mutual coupling, wideband elements, and dispersion. The author also presents a number of analog and digital beamforming networks for creating and manipulating beams. The book concludes with an overview of the methods to integrate time delay into the array design and of several other adaptive arrays that prove useful in many different systems. Examines RF signal concepts such as polarization and signal bandwidth and their applications to timed antenna arraysCovers arrays of point source, elements in timed antenna arrays, active electronically scanned array technology, and time delay in corporate fed arraysIncludes complete design examples for placing time delay in arrays Timed Arrays: Wideband and Time Varying Antenna Arrays is written for practicing engineers and scientists in wireless communication, radar, and remote sensing as well as graduate students and professors interested in advanced antenna topics.
Wireless Communications Systems

Wireless Communications Systems

Randy L. Haupt

Wiley-Blackwell
2020
sidottu
A comprehensive introduction to the fundamentals of design and applications of wireless communications Wireless Communications Systems starts by explaining the fundamentals needed to understand, design, and deploy wireless communications systems. The author, a noted expert on the topic, explores the basic concepts of signals, modulation, antennas, and propagation with a MATLAB emphasis. The book emphasizes practical applications and concepts needed by wireless engineers. The author introduces applications of wireless communications and includes information on satellite communications, radio frequency identification, and offers an overview with practical insights into the topic of multiple input multiple output (MIMO). The book also explains the security and health effects of wireless systems concerns on users and designers. Designed as a practical resource, the text contains a range of examples and pictures that illustrate many different aspects of wireless technology. The book relies on MATLAB for most of the computations and graphics. This important text: Reviews the basic information needed to understand and design wireless communications systemsCovers topics such as MIMO systems, adaptive antennas, direction finding, wireless security, internet of things (IoT), radio frequency identification (RFID), and software defined radio (SDR)Provides examples with a MATLAB emphasis to aid comprehensionIncludes an online solutions manual and video lectures on selected topics Written for students of engineering and physics and practicing engineers and scientists, Wireless Communications Systems covers the fundamentals of wireless engineering in a clear and concise manner and contains many illustrative examples.
Practical Genetic Algorithms

Practical Genetic Algorithms

Randy L. Haupt; Sue Ellen Haupt

John Wiley Sons Inc
2004
sidottu
This book deals with the fundamentals of genetic algorithms and their applications in a variety of different areas of engineering and science Most significant update to the second edition is the MATLAB codes that accompany the text Provides a thorough discussion of hybrid genetic algorithms Features more examples than first edition
Genetic Algorithms in Electromagnetics

Genetic Algorithms in Electromagnetics

Randy L. Haupt; Douglas H. Werner

John Wiley Sons Inc
2007
sidottu
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) commandsTwo step-by-step examples of optimizing antenna arrays as well as a comprehensive overview of applications of GA to antenna array design problemsCoverage of GA as an adaptive algorithm, including adaptive and smart arrays as well as adaptive reflectors and crossed dipolesExplanations 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 antennasCoverage of GA optimization of scattering, including scattering from frequency selective surfaces and electromagnetic band gap materialsIdeas on operator and parameter selection for a GADetailed explanations of particle swarm optimization and multiple objective optimizationAn appendix of MATLAB code for experimentation
Introduction to Adaptive Arrays

Introduction to Adaptive Arrays

Monzingo Robert A.; Haupt Randy L.; Miller Thomas W.

SciTech Publishing Inc
2010
sidottu
This second edition is an extensive modernization of the bestselling introduction to the subject of adaptive array sensor systems. With the number of applications of adaptive array sensor systems growing each year, this look at the principles and fundamental techniques that are critical to these systems is more important than ever before. Introduction to Adaptive Arrays, 2nd Edition is organized as a tutorial, taking the reader by the hand and leading them through the maze of jargon that often surrounds this highly technical subject. It is easy to read and easy to follow, as fundamental concepts are introduced with examples before more current developments and techniques are introduced. Problems at the end of each chapter serve both instructors and professional readers by illustrating and extending the material presented in the text. Both students and practicing engineers will easily gain familiarity with the modern contribution that adaptive arrays have to offer practical signal reception systems.
Rethinking Wesley's Theology for Contemporary Methodism

Rethinking Wesley's Theology for Contemporary Methodism

Randy L. Maddox; Theodore Runyon

Abingdon Press
1998
pokkari
One of the most surprising developments in contemporary Methodist theology is the degree to which leading Methodist and Wesleyan systematic theologians are reengaging John Wesley, finding his works instructive, provocative, and stimulating for their own theological reflection. Such a broad and purposeful dialogue with Wesley by theologians of the Wesleyan heritage is unprecedented in this century, and much rarer in the previous century than is popularly believed. This volume presents a set of original essays that represent and embody this new engagement allowing the reader to see how several prominent theologians are self-consciously reexamining and reappropriating their theological tradition.
The All-Weather Retirement Portfolio: Your post-retirement investment guide to a worry-free income for life
You can have it all-not just more income to spend in your retirement years, but also the peace of mind that comes from knowing that, no matter what happens in the outside world, you've done all you can do to have a worry-free income for life.In this book you'll find: - 9 steps to build a portfolio that will survive the Perfect Financial Storm, so you can stop worrying about the economy, the latest financial catastrophe, or what the market did today- 2 questions you must answer before you invest another dime- Why investing after you retire is radically different from investing while you're still working- The life expectancy of 6 key types of investments-and what you can do to make them last as long as you do- The 10 essential questions you must ask a financial advisor-before you hire one- The exact amount of money you can withdraw without worry or guilt, knowing you've applied the best available research to ensure you'll never run out of money---------------"Thurman takes a subject that is often misunderstood, and provides you the reasons, the methods, and an understanding of what you can expect to achieve, so you can invest with confidence." -Jimmy J. Williams, CFP(R), CPA/PFSCEO/President of Compass Capital Management, LLC"A must for anyone thinking of retiring or recently retired "-Stan Toler, bestselling author of The Secret Blend
Voices Overheard

Voices Overheard

Randy L Quinn

CSS Publishing Company
2023
pokkari
If you are struggling with the "traditional" ways of communicating Bible stories with your congregation, Randy Quinn offers an intriguing solution in his new book. Voices Overheard provides dramatic portrayals of Biblical characters sharing their experiences in the form of sermons. These stories can serve as complements and inspiration for new perspectives on familiar stories, allowing you to creatively explore well-known stories and bring a bit of dramatic flair to the pulpit. Quinn's book offers character monologues for Lent, Advent and ordinary time Lectionary texts, allowing viewers a glimpse into the minds of familiar Biblical characters, from Joseph, the Father of Jesus, to Sosthenes, who worked closely with Paul during his time in Corinth. This plausible fiction allows for smoother sermon preparation and gets your congregation more invested in the stories being told. Quinn encourages that you use his book to assist your own sermons and even compose a few of your own character perspectives inspired by these performances for a longer series.
Solving the Big Questions As If Thinking Matters Third Edition
Solving the Big Questions As If Thinking Matters - Third Edition Revised-Simplified-UpdatedWhere did we come from? Why are we here? Where are we going? The only book that sets aside evolutionary and religious bias to reveal the truth manifest by reason, evidence, and experience. Solving the age-old dilemmas by putting thinking ahead of belief. Nothing could be more fundamental than the questions of: Where did we come from? Why are we here? Where are we going? Nothing could be more true than the fact that virtually no one has answers they can rationally defend with evidence and consistency with natural laws. If we do not know our origin or destiny, then we cannot know how to properly live. The world's precarious state, and the prevailing sense of futility and meaninglessness are symptoms of either having no answers, or having the wrong ones. Experts have reached no consensus in spite of thousands of years of trying. So the average person either latches onto some convenient and attractive belief propped up with desire, hope, and faith, or gives up and ignores the topics altogether. This book offers the promise of turning that all around. It is the only book that sets aside evolutionary and religious bias to reveal the truth manifest by reason, evidence, and experience. If read openly and honestly, what you hold in your hands has the potential to totally revolutionize the scientific, philosophic, and religious worlds. When we approach the big questions as if thinking matters, we are led to exactly where the world needs to go, a place of honesty, truth, confidence, solutions, and love. Dr. Wysong masterfully teaches us how to reach within, use our own minds, consider the evidence honestly, and remain open-minded. The result is beautiful in its simplicity and wonderful in the hope, meaning, and purpose it brings.