No system in science or engineering can be successfully designed, analysed and specified unless it is backed up by precise quantitative measurements. This is particularly difficult in the field of microwaves where, more often than not, the parameter(s) of interest cannot be observed directly but must be inferred from the measurement of other related parameters. Although the advent of the automated network analyser has eliminated much of the previous drudgery, the problems of interpreting the digitally displayed information still remain. One purpose of this book is to provide the reader with a thorough understanding of the microwave circuit model and its limitations, and thus eliminate the many potential pitfalls that otherwise await the unwary experimenter.

The IET has organised training courses on microwave measurements since 1983, at which experts have lectured on modern developments. The purpose of this third edition of the lecture notes is to bring the latest techniques in microwave measurements to a wider audience. The book includes a survey of the theory of current microwave circuits as well as a description of the techniques for the measurement of power, spectrum, attenaution, circuit parameters, and noise, measurements of antenna characteristics, free fields, modulation and dielectric parameters. The emphasis throughout is on good measurement practice. All the essential theory is given and a previous knowledge of the subject is not assumed. The book will be of interest to those engaged in the design of microwave measurement systems in both research and industry, those providing microwave measurement systems in both research and industry, in measurement services and those involved in teaching microwave measurements in universities.

Open resonator microwave sensors allow accurate sensing, monitoring and measurement of properties such as dimension and moisture content in materials including dielectrics, rubber, polymers, paper, fabrics and wood veneers. This book presents a coherent and entirely practical approach to the design and use of systems based on these sensors in industrial environments, showing how they can provide meaningful, accurate and industrially-viable methods of gauging.

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.

This book is an introduction to microwave and RF signal modeling and measurement techniques for field effect transistors. It assumes only a basic course in electronic circuits and prerequisite knowledge for readers to apply the techniques and improve the performance of integrated circuits, reduce design cycles and increase their chance at first time success. The first chapters offer a general overview and discussion of microwave signal and noise matrices, and microwave measurement techniques. The following chapters address modeling techniques for field effect transistors and cover models such as: small signal, large signal, noise, and the artificial neural network based.