Electromechanical Transmitters For Elf Vlf Radio

Author : Jarred S. Glickstein,Soumyajit Mandal
Publisher : Springer Nature
Page : 222 pages
File Size : 46,8 Mb
Release : 2022-11-02
Category : Technology & Engineering
ISBN : 9783031151231

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Electromechanical Transmitters for ELF/VLF Radio by Jarred S. Glickstein,Soumyajit Mandal Pdf

This book describes a new, extremely low frequency (ELF)/ very low frequency (VLF) miniaturized transmitter concept, based on the mechanical motion of permanent magnets or electrets. The authors explain how utilizing the very high energy density of modern ferromagnetic and ferroelectric materials, such “electromechanical transmitters’’ can provide much higher field generation efficiency than conventional antennas, thus enabling practical ELF/VLF wireless communications links. The text begins with the fundamental challenges of such links and provides an historical overview of the attempts that have been made to address these challenges. It then focuses on the design and implementation of practical electromechanical ELF/VLF transmitters, which is an interdisciplinary subject that spans multiple research areas including electromagnetics, power electronics, control systems, and mechanical design. The authors also describe how such transmitters can be combined with receivers and signal processing algorithms to realize complete ELF/VLF links in challenging environments.

Author : Arthur D. Watt
Publisher : Pergamon
Page : 736 pages
File Size : 40,9 Mb
Release : 1967
Category : Technology & Engineering
ISBN : UCAL:B4345850

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VLF Radio Engineering by Arthur D. Watt Pdf

Electromagnetic Waves, Volume 14: VLF Radio Engineering provides a detailed coverage of the fields involved in very low frequency (VLF) radio engineering. This book serves as a guide for applying the information in the solution of practical problems. Comprised of seven chapters, this volume starts with an overview of the communications aspect following the flow of information carrying energy from the transmitting to receiving locations. This text then presents the complete systems that consider the interrelationship of the various factors. Other chapters explain the basic concept of a VLF ante.

Author : Michael Persinger
Publisher : Springer Science & Business Media
Page : 320 pages
File Size : 45,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781468490046

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ELF and VLF Electromagnetic Field Effects by Michael Persinger Pdf

Recent emphasis upon the importance of the physical environment has made science and the public even more cog nizant of the many components of the biosphere. While much attention has been given to ionizing electromagnetic stimuli which causes blatant and unalterable changes in biological systems, relatively little research has been concerned with those electromagnetic signals whose frequencies overlap with time-varying processes in living organisms. Extremely low frequency (ELF) electromagnetic fields can occur as waves between about I Hz to 100 Hz or as short pulses within this range of very low frequency (VLF) and higher frequency sources. The natural occurrence of ELF signals is associated with weather changes, solar disturbances and geophysical ionospheric perturbations. Man-made sources have also been reported. Certain physical properties of ELF signals make them excellent candidates for biologically important stimuli. Unlike many other weather components, ELF signals have the capacity to penetrate structures which house living organ isms. ELF wave configurations allow long distance propaga tional capacities without appreciable attenuation of inten sity, thus making them antecedent stimuli to approaching weather changes. Most importantly, ELF signals exhibit the frequencies and wave forms of bio-electrical events that occur within the brain and body. Thus resonance inter actions between animal and nature become attractive possi bilities.

Author : Anonim
Publisher : Unknown
Page : 1006 pages
File Size : 40,6 Mb
Release : 1977
Category : Aeronautics
ISBN : UVA:X004872602

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Scientific and Technical Aerospace Reports by Anonim Pdf

Author : James R. Wait
Publisher : Elsevier
Page : 621 pages
File Size : 55,8 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483184258

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Electromagnetic Waves in Stratified Media by James R. Wait Pdf

International Series of Monographs in Electromagnetic Waves, Volume 3: Electromagnetic Waves in Stratified Media provides information pertinent to the electromagnetic waves in media whose properties differ in one particular direction. This book discusses the important feature of the waves that enables communications at global distances. Organized into 13 chapters, this volume begins with an overview of the general analysis for the electromagnetic response of a plane stratified medium comprising of any number of parallel homogeneous layers. This text then explains the reflection of electromagnetic waves from planar stratified media. Other chapters consider the oblique reflection of plane electromagnetic waves from a continuously stratified medium. This book discusses as well the fundamental theory of wave propagation around a sphere. The final chapter deals with the theory of propagation in a spherically stratified medium. This book is a valuable resource for electrical engineers, scientists, and research workers.

Author : Anonim
Publisher : Unknown
Page : 920 pages
File Size : 41,8 Mb
Release : 1998
Category : Aeronautics
ISBN : STANFORD:36105021106716

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International Aerospace Abstracts by Anonim Pdf

Author : Baoyan Duan,Kazunori Umeda,Woonbong Hwang
Publisher : Springer
Page : 1020 pages
File Size : 41,8 Mb
Release : 2020-09-02
Category : Technology & Engineering
ISBN : 9813294434

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Proceedings of the Seventh Asia International Symposium on Mechatronics by Baoyan Duan,Kazunori Umeda,Woonbong Hwang Pdf

This book presents high-quality papers from the Seventh Asia International Symposium on Mechatronics (AISM 2019). It discusses the latest technological trends and advances in electromechanical coupling and environmental adaptability design for electronic equipment, sensing and measurement, mechatronics in manufacturing and automation, micro-mechatronics, energy harvesting & storage, robotics, automation and control systems. It includes papers based on original theoretical, practical and experimental simulations, development, applications, measurements, and testing. The applications and solutions discussed here provide excellent reference material for future product developments.

Author : Patrick Staebler
Publisher : John Wiley & Sons
Page : 383 pages
File Size : 52,5 Mb
Release : 2017-05-12
Category : Science
ISBN : 9781119384526

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Human Exposure to Electromagnetic Fields by Patrick Staebler Pdf

Everyone, whether they like it or not, is exposed to electromagnetic fields, most of the time, at very low levels. In this case, they are inconsequential, but they can cause adverse health effects when they become intense enough. This topic is complex and sensitive. Covering frequencies from 0 Hz to 300 GHz, Human Exposure to Electromagnetic Fields provides an overview of this vast topic. After a reminder of the concepts of electromagnetic fields, the author presents some examples of sources of radiation in daily life and in the industrial or medical sectors. The biophysical and biological effects of these fields on the human body are detailed and the exposure limits are recalled. The exposure assessment and the implementation of the appropriate regulation within companies are also covered. Technically and practically, this book is aimed at people with a scientific background, risk prevention actors, health physicians, especially occupational doctors, and equipment designers.

Author : Chandima Gomes
Publisher : Springer Nature
Page : 330 pages
File Size : 49,6 Mb
Release : 2021-08-13
Category : Technology & Engineering
ISBN : 9789811634406

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Lightning by Chandima Gomes Pdf

This book highlights the essential theoretical and practical aspects of lightning, lightning protection, safety and education. Additionally, several auxiliary topics that are required to understand the core themes are also included. The main objective of the contents is to enlighten the scientists, researchers, engineers and social activists (including policy makers) in developing countries regarding the key information related to lightning and thunderstorms. A majority of developing countries are in tropics where the lightning characteristics are somewhat different from those in temperate regions. The housing structures and power/communication networks, and human behavioural patterns(that depends on socio-economic parameters) in these countries are also different from those in the developed world. As the existing books on similar themes address only those scenarios in developed countries, this book serves a vast spectrum of readership in developing world who seek knowledge in the principles of lightning and a practical guidance on lightning protection and safety education.

Author : Giovanni Giambene
Publisher : Springer Nature
Page : 424 pages
File Size : 42,7 Mb
Release : 2021-10-29
Category : Technology & Engineering
ISBN : 9783030759735

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Queuing Theory and Telecommunications by Giovanni Giambene Pdf

This thoroughly revised textbook provides a description of current networking technologies and protocols as well as important new tools for network performance analysis based on queuing theory. The third edition adds topics such as network virtualization and new related architectures, novel satellite systems (such as Space X, OneWeb), jitter and its impact on streaming services, packet level FEC techniques and network coding, new Markovian models, and advanced details on M/G/1 queuing models. The author also adds new selected exercises throughout the chapters and a new version of the slides and the solution manual. The book maintains its organization with networking technologies and protocols in Part I and then theory and exercises with applications to the different technologies and protocols in Part II. This book is intended as a textbook for master level courses in networking and telecommunications sectors.

Author : Stéphane Sainson
Publisher : Springer
Page : 536 pages
File Size : 44,7 Mb
Release : 2017-03-30
Category : Science
ISBN : 9783319453552

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Electromagnetic Seabed Logging by Stéphane Sainson Pdf

Seabed logging (SBL) gathers the electromagnetic methods of marine subsoil exploration and more specifically those dedicated to the exploration of oil and gas at sea. Appeared in 2000, these techniques, with more than 500 industrial jobs, present after 15 years of commercial success a discovery record rate of nearly 90 % and seem now to turn the world in the offshore exploration field. Proposing a serious index of the presence of hydrocarbons , electromagnetic SBL coupled with seismic reflection survey is probably the first reliable method for direct detection of hydrocarbons. Complementing the structural concepts of oil exploration used since the 1920s, the SBL now radically modifies the approach and the philosophies of exploration especially those then including drilling and well logging activities. Electromagnetic Seabed Logging: a new tool for oil and gas prospecting, which original publication in French was in 2012, presents these methods, its principles, advantages, limitations, instruments, modeling and applications. It is also designed to be a tool for a reflection on the use of electromagnetic energy for the exploration in a conductive medium as sea water thus setting the theoretical and practical limits of these investigations for future developments. This book is intended of course for the geophysicists and the petroleum geologists, but also for the earth scientists, the reservoir engineers and the log analysts

Author : Rudolf F. Graf
Publisher : Unknown
Page : 568 pages
File Size : 49,8 Mb
Release : 1988
Category : Computers
ISBN : UOM:39015013826162

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Electronic Databook by Rudolf F. Graf Pdf

Author : Anonim
Publisher : Unknown
Page : 605 pages
File Size : 52,9 Mb
Release : 1997-04-01
Category : Electronic
ISBN : 1423572386

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Electronic Warfare and Radar Systems Engineering Handbook by Anonim Pdf

This handbook is designed to aid electronic warfare and radar systems engineers in making general estimations regarding capabilities of systems. It is not intended as a detailed designer's guide, due to space limitations. Portions of the handbook and future changes will be posted on an internet link.

Author : John G. Proakis,Masoud Salehi
Publisher : Unknown
Page : 801 pages
File Size : 42,8 Mb
Release : 2002
Category : Technology & Engineering
ISBN : 0130617938

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Communication Systems Engineering by John G. Proakis,Masoud Salehi Pdf

Thorough coverage of basic digital communication system principles ensures that readers are exposed to all basic relevant topics in digital communication system design. The use of CD player and JPEG image coding standard as examples of systems that employ modern communication principles allows readers to relate the theory to practical systems. Over 180 worked-out examples throughout the book aids readers in understanding basic concepts. Over 480 problems involving applications to practical systems such as satellite communications systems, ionospheric channels, and mobile radio channels gives readers ample opportunity to practice the concepts they have just learned. With an emphasis on digital communications, Communication Systems Engineering, Second Edition introduces the basic principles underlying the analysis and design of communication systems. In addition, this book gives a solid introduction to analog communications and a review of important mathematical foundation topics. New material has been added on wireless communication systems—GSM and CDMA/IS-94; turbo codes and iterative decoding; multicarrier (OFDM) systems; multiple antenna systems. Includes thorough coverage of basic digital communication system principles—including source coding, channel coding, baseband and carrier modulation, channel distortion, channel equalization, synchronization, and wireless communications. Includes basic coverage of analog modulation such as amplitude modulation, phase modulation, and frequency modulation as well as demodulation methods. For use as a reference for electrical engineers for all basic relevant topics in digital communication system design.

Author : Salvatore Celozzi,Rodolfo Araneo,Giampiero Lovat
Publisher : John Wiley & Sons
Page : 385 pages
File Size : 54,7 Mb
Release : 2008-05-16
Category : Technology & Engineering
ISBN : 9780470268476

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Electromagnetic Shielding by Salvatore Celozzi,Rodolfo Araneo,Giampiero Lovat Pdf

The definitive reference on electromagnetic shielding materials, configurations, approaches, and analyses This reference provides a comprehensive survey of options for the reduction of the electromagnetic field levels in prescribed areas. After an introduction and an overview of available materials, it discusses figures of merit for shielding configurations, the shielding effectiveness of stratified media, numerical methods for shielding analyses, apertures in planar metal screens, enclosures, and cable shielding. Up to date and comprehensive, Electromagnetic Shielding: Explores new and innovative techniques in electromagnetic shielding Presents a critical approach to electromagnetic shielding that highlights the limits of formulations based on plane-wave sources Analyzes aspects not normally considered in electromagnetic shielding, such as the effects of the content of the shielding enclosures Includes references at the end of each chapter to facilitate further study The last three chapters discuss frequency-selective shielding, shielding design procedures, and uncommon ways of shielding—areas ripe for further research. This is an authoritative, hands-on resource for practicing telecommunications and electrical engineers, as well as researchers in industry and academia who are involved in the design and analysis of electromagnetic shielding structures.