Scanning arrays present the radar or communications engineer with the ultimate in antenna flexibility. They also present a multitude of new opportunities and new challenges that need to be addressed. In order to describe the needs for scanned array development, this book begins with a brief discussion of the history that led to present array antennas. This text is a compact but comprehensive treatment of the scanned array, from the underlying basis for array pattern behavior to the engineering choices leading to successful design. The book describes the scanned array in terms of radiation from apertures and wire antennas and introduces the effects resulting directly from scanning, including beam broadening, impedance mismatch and gain reduction and pattern squint and those effects of array periodicity including grating and quantization lobes and array blindness. The text also presents the engineering tools for improving pattern control and array efficiency including lattice selection, subarrray technology and pattern synthesis. Equations and figurers quantify the phenomena being described and provide the reader with the tools to tradeoff various performance features. The discussions proceed beyond the introductory material and to the state of the art in modern array design. Contents: Basic Principles and Applications of Array Antennas / Element Coupling Effects in Array Antennas / Array Pattern Synthesis / Subarray Techniques for Limited Field of View and Wide Band Applications
Reptiles are popular pets, and it can be argued that the bearded dragon is the best reptile to keep as a pet. This newly updated and expanded edition of the best-selling The Bearded Dragon Manual promises to excite new and seasoned herp enthusiasts with its in-depth discussion on all aspects of dragon keeping and its brilliant color photography. Written by a team of recognized herpetoculture authorities, veterinarians, and specialists, this volume offers comprehensive information that will be welcomed by newcomers and experienced bearded-dragon enthusiasts alike. Inside The Bearded Dragon Manual: -History and characteristics of the different types of bearded dragons -How to select bearded dragons as pets or for breeding -Creating a comfortable habitat for your bearded dragon with proper heat and lighting -Understanding typical bearded-dragon behavior -Feeding your dragon a nutritionally sound diet throughout its life -Recognizing signs of disease and how to handle health issues -Informative health and feeding charts as well as helpful answers to dragon-keeping FAQs -Close to 100 color photographs, including a section dedicated to beautifully colored morphs -A special chapter on the care and breeding of frilled dragons
Among the best vivarium animals are the stunningly beautiful tree frogs, the subject of this book. This colorful and informative guide written by three renowned ranine experts focuses on the care of tree frogs but also covers important topics, from acclimating imported species to housing, feeding, and captive breeding. Popular Tree Frogs proves the most authoritative and reliable resource for keeping tree frogs healthy and thriving. Authors Philippe de Vosjoli, Robert Maillous, and Drew Ready provide guidelines for selecting and keeping the most popular species of tree frogs, highlighting White's tree frogs and red-eyed tree frogs as well as white-lipped tree frogs, green tree frogs, Cuban tree frog, barking tree frog, gray tree frog, golden foam nest frogs, gliding tree frogs, and Australian red-eyed tree frogs. For each featured tree frog, the authors provide insight into size, longevity, care and maintenance, sexing, feeding, breeding, and more. This Advanced Vivarium Systems title includes information about selecting a healthy example, quarantine and acclimation considerations, housing needs, water and feeding, as well as solid advice about keeping tree frogs healthy. A separate chapter on diseases and disorders provides a complete primer on the health needs and veterinary care of these rewarding amphibians.
This completely revised third edition of an Artech House classic, Phased Array Antenna Handbook, Second Edition, offers an up-to-date and comprehensive treatment of array antennas and systems. This edition provides a wealth of new material, including expanded coverage of phased array and multiple beam antennas. New modern machine learning techniques used for analysis are included. Additional material on wideband antennas and wideband coverage in array antennas are incorporated in this book, including new methods, devices, and technologies that have developed since the second edition. A detailed treatment of antenna system noise, sections on antenna pattern synthesis, developments in subarray technology, and in-depth coverage of array architecture and components are additional new features of this book. The book explores design elements that demonstrate how to size an array system with speed and confidence. Moreover, this resource provides expanded coverage of systems aspects of arrays for radar and communications. Supported with numerous equations and illustrations, this practical book helps evaluate basic antenna parameters such as gain, sidelobe levels, and noise. Readers learn how to compute antenna system noise, design subarray geometries for given bandwidth, scan and sidelobe constraints, and choose array illumination tapers for given sidelobe levels.
Important new insights into how various components and systems evolved Premised on the idea that one cannot know a science without knowing its history, History of Wireless offers a lively new treatment that introduces previously unacknowledged pioneers and developments, setting a new standard for understanding the evolution of this important technology. Starting with the background-magnetism, electricity, light, and Maxwell's Electromagnetic Theory-this book offers new insights into the initial theory and experimental exploration of wireless. In addition to the well-known contributions of Maxwell, Hertz, and Marconi, it examines work done by Heaviside, Tesla, and passionate amateurs such as the Kentucky melon farmer Nathan Stubblefield and the unsung hero Antonio Meucci. Looking at the story from mathematical, physics, technical, and other perspectives, the clearly written text describes the development of wireless within a vivid scientific milieu. History of Wireless also goes into other key areas, including: The work of J. C. Bose and J. A. Fleming German, Japanese, and Soviet contributions to physics and applications of electromagnetic oscillations and waves Wireless telegraphic and telephonic development and attempts to achieve transatlantic wireless communications Wireless telegraphy in South Africa in the early twentieth century Antenna development in Japan: past and present Soviet quasi-optics at near-mm and sub-mm wavelengths The evolution of electromagnetic waveguides The history of phased array antennas Augmenting the typical, Marconi-centered approach, History of Wireless fills in the conventionally accepted story with attention to more specific, less-known discoveries and individuals, and challenges traditional assumptions about the origins and growth of wireless. This allows for a more comprehensive understanding of how various components and systems evolved. Written in a clear tone with a broad scientific audience in mind, this exciting and thorough treatment is sure to become a classic in the field.
Reptiles are popular pets, and it can be argued that the bearded dragon is the best reptile to keep as a pet. This newly updated and expanded edition of the best-selling The Bearded Dragon Manual promises to excite new and seasoned herp enthusiasts with its in-depth discussion on all aspects of dragon keeping and its brilliant color photography. Written by a team of recognized herpetoculture authorities, veterinarians, and specialists, this volume offers comprehensive information that will be welcomed by newcomers and experienced bearded-dragon enthusiasts alike. Inside The Bearded Dragon Manual: *History and characteristics of the different types of bearded dragons *How to select bearded dragons as pets or for breeding *Creating a comfortable habitat for your bearded dragon with proper heat and lighting *Understanding typical bearded-dragon behavior *Feeding your dragon a nutritionally sound diet throughout its life *Recognizing signs of disease and how to handle health issues *Informative health and feeding charts as well as helpful answers to dragon-keeping FAQs *Close to 100 color photographs, including a section dedicated to beautifully colored morphs *A special chapter on the care and breeding of frilled dragons
For those of you who have not yet been exposed to these lizards, be aware that they rank among the very best of lizard pets. A moderate-sized animal, they have pleasing form, attractive pattern and coloration, and tend to be very tame.
First published in 1981, Robert S. Elliott's Antenna Theory and Design is one of the most significant works in electromagnetic theory and applications. In its broad-ranging, analytic treatment, replete with supporting experimental evidence, Antenna Theory and Design conveys fundamental methods of analysis that can be used to predict the electromagnetic behavior of nearly everything that radiates. After more than two decades, it remains a key resource for students, professors, researchers, and engineers who require a comprehensive, in-depth treatment of the subject. In response to requests from many of our members, IEEE is now reissuing this classic. Newly revised, it once again will be an invaluable textbook and an enduring reference for practicing engineers. The IEEE Press Series on Electromagnetic Wave Theory offers outstanding coverage of the field. It consists of new titles of contemporary interest as well as reissues and revisions of recognized classics by established authors and researchers. The series emphasizes works of long-term archival significance in electromagnetic waves and applications. Designed specifically for graduate students, researchers, and practicing engineers, the series provides affordable volumes that explore and explain electromagnetic waves beyond the undergraduate level.
Thank you for visiting our website. Would you like to provide feedback on how we could improve your experience?
This site does not use any third party cookies with one exception — it uses cookies from Google to deliver its services and to analyze traffic.Learn More.