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Principles of Microwave Measurements

Wed, 04 Nov 2020 10:44:35 GMT

With this book engineers will understand the fundamental theoretical bases of modern microwave measurements. The narrative is firmly based on the principles of swept frequency techniques, though single frequency measurements, for instance of power, are also fully covered. By the use of flowgraph techniques and careful approximations, the author has given physical meaning to the mathematical arguments and has been careful to show the practical and theoretical limitations on measurement accuracy. The book covers a wide range of microwave measurements in the time and frequency domains, including reflectometry, the Smith chart, spectrum analysers, vector and scalar analysers, multiports, power, noise, frequency stability, time domain reflectometry, and a comprehensive account of antenna far and near field measurements. It is particularly recommended for young engineers requiring a good background in microwave measurement principles and will also be a useful reference for more experienced engineers.

Analogue IC Design

Tue, 03 Nov 2020 20:37:50 GMT

State-of-the-art analogue integrated circuit design is receiving a tremendous boost from the development and application of current-mode approaches, which are rapidly superseding traditional voltage-mode techniques. This activity is linked to important advances in integrated circuit technologies, such as the 'true' complementary bipolar process; CMOS VLSI technology, which allows realisation of high-performance mixed analogue and digital circuits; and gallium arsenide processing, which has matured to a point where it can be used effectively in high-speed analogue circuit and system design. In this book, all three technologies are represented, with key building blocks, circuit designs and applications. Many very important, but recent, techniques are presented, including switched-current techniques for high-precision filtering and A/D and D/A conversion, current-based amplifying techniques, and neural networks. Translinear principles, current mirrors, and the current conveyor are also covered. This book draws together contributions from the world's most eminent analogue IC designers to provide, for the first time, a comprehensive text devoted to this important and exciting new area of analogue electronics.

ATM

Tue, 12 Jun 2018 01:13:57 GMT

Since ATM was identified by the CCITT in 1988 as the target transfer mode for broadband communications, there has been considerable research activity on the topic world-wide. Within Europe, the RACE programme of the European Community has brought together experts from a wide variety of organisations to work on several projects. This book results from the work of one of those projects.

Aimed at those interested in ATM generally, or those needing to understand the issues in designing or implementing broadband networks, the book draws on the results of the research project to present a description of ATM from a network point of view. Starting with the principles of ATM, it goes on to cover topics such as network performance, network structure, evolution and interworking. It also discusses more general issues including numbering, charging and the need for intelligence in the network. It concludes by explaining the current position on traffic engineering for broadband ATM networks.

Switched Currents

Tue, 12 Jun 2018 01:03:04 GMT

The switched-current technique is heralding a new era in analogue sampled-data signal processing. Unlike switched-capacitor circuits, switched-current circuits do not require linear floating capacitors or operational amplifiers and they are giving a renewed impetus to mixed-signal VLSI on standard digital technology. Key analogue designers from industry and academia worldwide have contributed to this first, very timely book entirely devoted to switched current analogue signal processing.

The book introduces the basic switched-current technique, reviews the state-of-theart and presents practical chip examples. Numerous application areas are described, ranging from filters and data converters to image processing applications. It also gives a very comprehensive treatment of the fundamental principles of switched-current circuits and systems.

The material in this book will be of benefit to students, both undergraduate and postgraduate, and researchers and circuit designers in academia and the electronics industry.

The Correspondence of Michael Faraday

Tue, 12 Jun 2018 00:21:01 GMT

Michael Faraday (1791-1867) was one of the most important men of science in nineteenth century Britain. His discoveries of electromagnetic rotations (1821) and electro-magnetic induction (1831) laid the foundations of the modern electrical industry. His discovery of the magneto-optical effect and diamagnetism (1845) led him to formulate the field theory of electro-magnetism, which forms one of the cornerstones of modern physics.

These and a whole host of other fundamental discoveries in physics and chemistry, together with his lecturing at the Royal Institution, his work for the state, his religious beliefs and his lack of mathematical ability, make Faraday one of the most fascinating scientists ever.

All these aspects of his life and work, and others such as his illnesses, are reflected in his correspondence. This volume, in which over 70% of the letters are previously unpublished, covers most of the 1830s. During this period, Faraday pursued the consequences of his discovery of electromagnetic induction, demonstrated the identity of electricities and revised entirely the theories of electro-chemistry (in the process coining now familiar words such as electrode, cathode and ion) and the nature of electricity.

His correspondents in this volume include men and women of science (such as William Whewell, Charles Babbagc, G.B. Airy, J.D. Forbes, Joseph Henry, Alexander von Humboldt, Macedonio Melloni, Christian Schoenbein, Ada Lovelace and Mary Somerville), antiquaries (such as John Gage and Thomas Pettigrew), military and naval men (such as John Barrow, Charles Pasley and Percy Drummond), artists (such as William Wyon, H.W. Pickersgill, John Constable and John Landseer) and politicians (such as Prime Minister Lord Melbourne, Lord Holland and many members of the Holland House circle).

The Correspondence will be a valuable resource for historians and sociologists of science, as well as historians of the nineteenth century and the industrial revolution. It will also be of great interest to electrical engineers, physicists and chemists who want to know more about one of the most eminent figures in their history.

Propagation, Scattering and Diffraction of Electromagnetic Waves

Mon, 11 Jun 2018 22:44:03 GMT

This book describes new, highly effective, rigorous analysis methods for electromagnetic wave problems. Examples of their application to the mathematical modelling of micros trip lines, corrugated flexible waveguides, horn antennas, complex-shaped cavity resonators and periodic structures are considered.

Special attention is paid to energy dissipation effects. Various physical models and methods of analysis of dissipation are described and approximate formulas and computer-based calculation results for dissipation characteristics are given and compared with experimental data. Ways of decreasing dissipation in waveguides and resonators are discussed.

The book will be of interest to physicists and engineers working on the theory and design of microwave and millimetre-wave components and devices. Designers in microwave engineering will find here all the information they need for choosing the correct waveguide (resonator) for a stipulated dissipation characteristic. The numerical algorithms and formulas can be directly applied to CAD systems. The book is also relevant for students of electromagnetism and microwave circuits.

Polynomial Methods in Optimal Control and Filtering

Mon, 11 Jun 2018 21:32:25 GMT

This book aims to demonstrate the power and breadth of polynomial methods in control and filtering. Direct polynomial methods have previously received little attention compared with the alternative Wiener-Hopf transfer-function method and the statespace methods which rely on Riccati equations.

The book provides a broad coverage of the polynomial equation approach in a range of linear control and filtering problems. The principal feature of the approach is the description of systems in fractional form using transfer functions. This representation leads quite naturally and directly to the parameterisation of all 'acceptable' feedback controllers for a given problem in the form of a Diophantine equation over polynomials. In the polynomial equation approach, this direct parameterisation is explicitly carried through to the synthesis of controllers and filters and, further, to the computer implementation of numerical algorithms.

The book is likely to be of interest to students, researchers and engineers with some control and systems theory or signal processing background. It could be used as the basis of a graduate-level course in optimal control and filtering. The book proceeds from the necessary background material presented at a tutorial level, through recent theoretical and practical developments, to a detailed presentation of numerical algorithms.