Автор: С. Щелкунов и Г. Фриис
Название: Антенны (Теория и практика)
Издательство: М:, Советское радио
Год: 1955
Страниц: 606
Формат: DJVU, PDF
Размер: 28 МБ

Перевод с английского под редакцией Л.Д. Бахраха

КРАТКОЕ ОГЛАВЛЕНИЕ:..

Название: Радиоэлектроника, автоматика и элементы ЭВМ
Автор: Богатырев А.Н.
Издательство: М.: Просвещение
Год: 1990
Cтраниц: 182, цвет.ил.
Формат: pdf
Размер: 27 мб
Язык: русский

Основная цель пособия ознакомить учащихся с основами промышленной электроники, с электронной измерительной аппаратурой, интегральными схемами. Электронные переговорные устройства, кодовые замки, электронные счетчики — эти занимательные модели предлагаются для изготовления на факультативе. В пособии даны также материалы справочного характера, необходимые для практической работы.

Название: Principles of Signals and Systems
Автор: Orhan Gazi
Издательство: Springer
Год: 2023
Страниц: 376
Язык: английский
Формат: pdf (true)
Размер: 13.1 MB

The textbook presents basic concepts of signals and systems in a clear manner, based on the author's 15+ years of teaching the undergraduate course for engineering students. To attain full benefit from the content, readers should have a strong knowledge of calculus and be familiar with integration, differentiation, and summation operations. The book starts with an introduction to signals and systems and continues with coverage of basic signal functions and their manipulations; energy, power, convolution, and systems; Fourier analysis of continuous time signals and digital signals; Laplace transform; and Z transforms. Practical applications are included throughout. The book is also packed with solved examples, self-study exercises, and end of chapter problems.

Название: PLC Programming In Instruction List According To IEC 61131-3: A Systematic And Action-Oriented Introduction In Structured Programming, 5th Edition
Автор: Hans-Joachim Adam, Mathias Adam
Издательство: Springer
Год: 2022
Страниц: 245
Язык: английский
Формат: pdf (true), epub
Размер: 24.5 MB

The book is written as a textbook and exercise book. This means that you will be introduced to new areas through explanation or examples. To consolidate your knowledge and to check your learning and success, we recommend that you do the exercises. Sample solutions are available for most exercises: Each exercise has a unique name under which the solution can be found on the authors’ website. An integral part of this book is the PLC simulation software “PLC-lite”, which was developed by the authors especially for this course. You can download it free of charge from the authors’ website. This gives you the opportunity to intensively test a control system that conforms to the standards, regardless of limitations with real systems. The scope of commands, data types, structures, etc. has been selected in such a way that the special features of programming in instruction lists according to IEC 61131-3 can be easily understood using the exercises from this book. In addition, “PLC-lite” contains a large number of processes as animated simulations. This allows you to test your programs in a practical and safe manner and to study the behavior of the controlled processes (even under extreme conditions or “errors”). Your PC is thus both a programming device and PLC automation device as well as a “technical system”.

Название: Coherent Optical Wireless Communication Principle and Application
Автор: Xizheng Ke, Jiali Wu
Издательство: Springer/Science Press
Год: 2022
Страниц: 474
Язык: английский
Формат: pdf (true)
Размер: 17.6 MB

This book presents the key technologies of coherent optical wireless communication, covers topics such as beam coupling, signal optical polarization control and distorted wavefront correction. It discusses the principle of coherent optical communication and heterodyne detection conditions. In this book, the array coupling receiving technology and large aperture coupling technology are introduced to realize the spatial optical fiber coupling; simulated annealing algorithm, particle swarm optimization algorithm and SPO algorithm are used to control the polarization state of the signal beam; and the correction of distorted wavefront of the signal beam by adaptive optics technology and wavefront sensorless adaptive optics technology are analyzed, and the influence of beam mode on coherent detection performance is elaborated. Both theoretical deduction and experimental results are included in this book, which can help readers further understand the theoretical knowledge.

Название: Defected Ground Structure (DGS) Based Antennas: Design Physics, Engineering, and Applications
Автор: Debatosh Guha, Chandrakanta Kumar, Sujoy Biswas
Издательство: Wiley-IEEE Press
Год: 2023
Страниц: 323
Язык: английский
Формат: pdf (true)
Размер: 23.5 MB

Defected Ground Structure (DGS) Based Antennas a unique exploration of critical topics in defected ground structures and their applications. In Defected Ground Structure (DGS) Based Antennas: Design Physics, Engineering, and Applications , three distinguished authors deliver a comprehensive discussion of key topics related to defected ground structures (DGSs) and their applications to advanced antenna designs, including microstrips, arrays, dielectric resonators, PIFA, and printed monopoles. The book explores major advances in the technology that have occurred since 2006, as well as the fundamentals of the research in the subject. It also presents future possibilities for new researchers to assist in the development of new studies and technologies for practicing engineers and developers.

Название: Intelligent Reconfigurable Surfaces (IRS) for Prospective 6G Wireless Networks
Автор: Muhammad Ali Imran, Lina Mohjazi, Tie Jun Cui
Издательство: Wiley-IEEE Press
Год: 2023
Страниц: 296
Язык: английский
Формат: pdf (true), epub
Размер: 36.5 MB

Authoritative resource covering preliminary concepts and advanced concerns in the field of IRS and its role in 6G wireless systems. Intelligent Reconfigurable Surfaces (IRS) for Prospective 6G Wireless Networks provides an in-depth treatment of the fundamental physics behind reconfigurable metasurfaces, also known as intelligent reflecting surfaces (IRS), and outlines the research roadmap towards their development as a low-complexity and energy-efficient solution aimed at turning the wireless environment into a software-defined entity. The text demonstrates IRS from different angles, including the underlying physics, hardware architecture, operating principles, and prototype designs. It enables readers to grasp the knowledge of the interplay of IRS and state-of-the-art technologies, examining the advantages, key principles, challenges, and potential use-cases. Practically, it equips readers with the fundamental knowledge of the operational principles of reconfigurable metasurfaces, resulting in its potential applications in various intelligent, autonomous future wireless communication technologies.

Название: Apple Watch For Dummies, 6th Edition, 2023 Edition
Автор: Marc Saltzman
Издательство: For Dummies
Год: 2023
Страниц: 451
Язык: английский
Формат: pdf (true)
Размер: 52.5 MB

Stop looking at your phone―and start looking at your Apple Watch. Much more than a time-telling device, the Apple Watch is your very own wrist-sized computer. And Apple Watch For Dummies is the most trusted guide for new and upgrading users. Learn how to check your email, make a phone call, look at tomorrow's weather forecast, and track your calorie burn, all right on your wrist. Dummies helps you navigate the interface, use helpful Siri shortcuts, make wireless payments, and more. This 2023 Edition is fully updated for the latest version of the Apple Watch and watchOS.

Автор: В. В, Вознюк
Название: В помощь юному радиолюбителю
Издательство: Новосибирское книжное издательство
Год: 1958
Страниц: 164
Формат: DJVU, PDF
Размер: 12 МБ
Члены радиокружка Новосибирской областной станции юных техников радиофицировали своим радиоузлом пионерский лагерь им. Александра Матросова, помогли в лагере организовать радиокружок, где было изготовлено 20 детекторных приемников. Эти приемники ребята установили в домах колхозников колхоза «Октябрь» Новосибирской области...

Название: Optical Design for LED Solid State Lighting: A Guide
Автор: Ching-Cherng Sun, Tsung-Xian Lee
Издательство: IOP Publishing
Серия: IOP Series in Emerging Technologies in Optics and Photonics
Год: 2022
Страниц: 219
Язык: английский
Формат: pdf (true)
Размер: 47.1 MB

Light-emitting diodes (LEDs) are considered the most important light source of the 21st century owing to advantages of energy saving, long life, fast response, high colour performance, and environmental benefit. We believe that accurately understanding the light performances of LEDs and using them skilfully is an important capability for optical designers. The book covers seven chapters. The first chapter introduces the background of SSL and knowledge for readers that four-level optical technologies will be discussed throughout the book. Besides, radiometry and photometry, the essential knowledge for handling illumination of SSL, is introduced to the readers. The second chapter briefly introduces basic optics to the readers. This is useful for a reader without an optics background, and it is also helpful to a reader in strengthening the necessary optical knowledge. The third chapter discusses the light extraction of an LED.