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This edition of an established textbook presents aspects of electromagnetic theory of direct relevance to the transmission of information by electromagnetic waves. In revising the first edition the authors have taken the opportunity to extend the coverage significantly by adding new material on optical transmission. Throughout, the theory is applied to the working of practical systems, and the constraints imposed by fundamental properties are emphasised.
Climatic factors such as rain, snow, and other forms of precipitation can have a significant impact on the transmission of radio, light, or heat waves in the atmosphere. Communication systems may experience a loss of signal caused by the effects of rain on a radio link. Radar systems may experience interference that distorts the amplitude of the target signal. Any remote sensing system that relies on the propagation of electromagnetic waves must therefore be designed to take these factors into account. Electromagnetic Wave Propagation Through Rain was written to help system designers in such fields as meteorology, telecommunications, radar, and aircraft guidance systems face the challenge of predicting and compensating for these potentially serious weather-related effects on communication or remote sensing systems around the world and above the surface of the earth. Electromagnetic Wave Propagation Through Rain describes and analyzes the interaction between electromagnetic waves and various forms of precipitation. Interdisciplinary in approach, this book provides a solid in-depth treatment of the underlying physics as well as applications in communications, the aerospace industry, and meteorology. Through a combination of observations and models, Dr. Crane provides both students and practitioners of communication system design with a reliable statistical base for determining the frequency and severity of precipitation- generated attenuation episodes that can significantly impact on vital electromagnetic waves in the atmosphere. An invaluable book for professionals and advanced students in electrical, aerospace, and communications engineering, remote sensing, physics, and meteorology, Electromagnetic Wave Propagation Through Rain represents a significant addition to the literature and an important contribution to our understanding and management of this problem. Precipitation patterns can have a major impact on telecommunication and radar systems around the world. The frequency and duration of rain or snow in any given area at any given time can determine the extent to which vital electromagnetic waves may be compromised--causing interference or even failure in a system. The result of more than 30 years of research, Electromagnetic Wave Propagation Through Rain provides a clear analysis of attenuation by rain and other forms of precipitation on a wide range of vital communication systems. Using observations and models, the author offers predictable statistics of rain events which can help to achieve more effective system designs. Its practical interdisciplinary approach makes Electromagnetic Wave Propagation Through Rain an indispensable resource for engineering professionals and advanced students in electrical, aerospace, and communications engineering. Major topics covered include: * Effects of Rain * Rain Structure and Rain-Rate Statistics * Rain-Rate Climate Models * Modeling Attenuation by Rain * Attenuation Mitigation via Diversity * Worst-Month Statistics * Estimating Risk
In the offered book the fundamentals of electromagnetic fields and waves are discussed based on the great Maxwell equations. The book is conceived as a textbook for serious technical and classical universities in the considered themes. Nevertheless, it can be used, of course, as the reference book for wide group of engineers, researches and practical experts. Material of this book is divided into four main parts connected between them. The first part (Fundamental of Electrodynamics) is devoted to explanation of Maxwell equations and methods of its solutions. Besides classical interpretation the generalized equations are discussed, which take into consideration the scalar magnetic fields. New approaches allow description of so-called longitudinal electromagnetic waves, which have the absolutely non-standard propagation properties, and permit to explain various electrodynamics paradoxes, which cannot be explained in another way. The main characteristics of wave processes in the free space and in transmission lines (feeders) are described. The second part (Radio Wave Propagation) investigates the obvious patterns of diffraction and interference phenomena at radio wave propagation for the obstacle presence in the propagation track, which is typical for all practical situations. Radio wave propagation of various frequency ranges is fulfilled separately taking into consideration the specific features of reflections from the atmosphere parts, attenuation in different media, types of propagating waves, multipath effects, diffraction and non-standard conditions of obstacle overcoming including non-usual ways of atmosphere ducts. The third part is devoted to description of various types and antennas, beginning from simplest (vibrators) and ending by complicate adaptive antenna arrays. Description is fulfilled on the reviewing level with many obvious figures, not to rely on strict mathematical methods, but rather on the concept level. Fourth part includes description of UHF devices, which are the elements’ base of UHF devices including surface and bulk integrated UHF circuits. These results have in many aspects the pioneer character and they are not widely known to experts. Distinctive feature of the offered book is sufficiently simplifies description of the very complicated electrodynamics problems available for the modern students and for young engineers. Of course, it is impossible to deal without mathematics in theses areas but required mathematics can be replaced by the many patterns, which give the chance to understand problems and to determine the complex questions. Sample Chapter(s) Chapter1: GENERAL DEFINITIONS AND RELATIONS OF ELECTRODYNAMICS (498 KB)Contents:FRONT MATTERCHAPTER 1. GENERAL DEFINITIONS AND RELATIONS OF ELECTRODYNAMICSCHAPTER 2. ELECTROMAGNETIC FIELDS AND WAVESCHAPTER 3. MAIN PHYSICAL PHENOMENA AT RADIO WAVES PROPAGATIONCHAPTER 4. PROPAGATION OF RADIO WAVES OF DIFFERENT RANGES AND ITS APPLICATION AREASCHAPTER 5. PRINCIPAL CHARACTERISTICS OF ANTENNASCHAPTER 6. ANTENNAS OF DECIMILLIMETER, MILLIMETER AND CENTIMETER WAVESCHAPTER 7. ANTENNAS OD DECIMETER, METER AND DECAMETER WAVESCHAPTER 8. ANTENNAS OF HECTOMETER, KILOMETER MYRIAMETER WAVESCHAPTER 9. ANTENNAS FOR TV, RADIO RELAY AND SPACE COMMUNICATION LINESCHAPTER 10. ELECTROMAGNETIC COMPATIBILITY OF RADIO ENGINEERING SYSTEMS. ANTENNAS AND THE PROBLEM OF ITS MINIATURIZATIONCHAPTER 11. MAIN COMPONENTS OF THE ELEMENT BASE OF ANTENNA-FEEDER ENGINEERINGCHAPTER 12. BASE ELEMENTS AND FUNCTIONAL UNITS OF ANTENNA- FEEDER ENGINEERINGBACK MATTERReadership: The book is conceived as a textbook for serious technical and classical universities in the considered themes. Nevertheless, it can be used, of course, as the reference book for wide group of engineers, researches and practical experts.
This systematic and well-written book provides an in-depth analysis of all the major areas of the subject such as fields, waves and lines. It is written in a simple and an easy-to-understand language. Beginning with a discussion on vector calculus, the book elaborately explains electrostatics, including the concepts of electric force and field intensity, electric displacement, Gauss law, conductors, dielectrics and capacitors. This is followed by a detailed study of magnetostatics, covering Biot–Savart law, Lorentz’s force law and Ampere’s circuital law. Then, it discusses Maxwell’s equations that describe the time-varying fields and the wave theory which is the basis of radiation and wireless communications. Finally, the book gives a fair treatment to transmission line theory, which is a foundation course in mechanical engineering. The text is well-supported by a large number of solved and unsolved problems to enhance the analytical skill of the students. The problems are framed to test the conceptual understanding of the students. It also includes plenty of objective type questions with answers. It is intended as a textbook for the undergraduate students of Electrical and Electronics Engineering and Electronics and Communication Engineering for their course on Electromagnetic Waves and Transmission Lines.
Includes: Elements of the problem. Theory of propagation in a horizontally stratified atmosphere. Meteorology of the retraction problem. Experimental studies of refraction. Reflections from the earth's surface. Radar targets and echoes. Meteorological echoes. Atmosphere attenuation.
Adapted from a successful and thoroughly field-tested Italian text, the first edition of Electromagnetic Waves was very well received. Its broad, integrated coverage of electromagnetic waves and their applications forms the cornerstone on which the author based this second edition. Working from Maxwell's equations to applications in optical communications and photonics, Electromagnetic Waves, Second Edition forges a link between basic physics and real-life problems in wave propagation and radiation. Accomplished researcher and educator Carlo G. Someda uses a modern approach to the subject. Unlike other books in the field, it surveys all major areas of electromagnetic waves in a single treatment. The book begins with a detailed treatment of the mathematics of Maxwell's equations. It follows with a discussion of polarization, delves into propagation in various media, devotes four chapters to guided propagation, links the concepts to practical applications, and concludes with radiation, diffraction, coherence, and radiation statistics. This edition features many new and reworked problems, updated references and suggestions for further reading, a completely revised appendix on Bessel functions, and new definitions such as antenna effective height. Illustrating the concepts with examples in every chapter, Electromagnetic Waves, Second Edition is an ideal introduction for those new to the field as well as a convenient reference for seasoned professionals.
This text provides a good theoretical understanding of the electromagnetic field equations while also treating a large number of applications. In fact, no topic is presented unless it is directly applicable to engineering design or unless it is needed for the understanding of another topic. Electric motors and transformers are used to demonstrate the ideas of magnetic forces and torques and of induction; the applications discussed include the new super-efficient electric drives, linear induction motors, and implantable transformers to power life-sustaining devices. The discussion of wave-propagation phenomena includes applications of new materials to aerospace systems, such as the so-called stealth materials, as well as the use of electromagnetic weaves for materials processing, such as grain drying with microwaves, microwave detection of explosives, and remote sensing of the earth and its resources.

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