Microwave circuit theory and foundations of microwave metrology : Peter Peregrinus on behalf of the Institution of Electrical

This book provides a thorough understanding of the microwave circuit model and its limitations. As suggested by the title, the book is divided into two major parts, microwave circuit theory, which includes chapters 1-9, and microwave metrology which comprises the remainder. The introductory chapters (primarily Chapter 2) are intended to provide a simplified outline of the theoretical basis for microwave (as contrasted with low frequency) circuit theory. These are based to a large degree upon the prior work of D.M. Kerns, whose example of careful formulation has been a source of unending challenge and inspiration to the author. Following this, the focus shifts to a development of the scattering notation, and where special attention is given to those features which make microwave metrology different from its lower frequency counterpart.

The second part of the book describes the different experimental strategies which have been devised to measure the parameters associated with the microwave model. From one perspective, some of these are now "obsolete" by virtue of the introduction of the automated network analyzer. On the other hand, for the serious student of metrology, the strategies are of continued interest even if the methods by which they were implemented are not. In the author's experience, an intuitive mental picture of the system operation can be an invaluable asset, although never a substitute for a careful analytical formulation. An example is the tuned reflectometer. Although for most applications the method is obsolete, an understanding of the associated theory can still provide useful insights into the microwave circuit model, and the operation of other measurement techniques.

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.

Starting with the field equations, the book first outlines the theoretical basis for microwave circuit theory with particular emphasis on its similarity to, and difference from, the low frequency counterpart. This leads to an identification of the parameters to be measured and is followed by a survey of measurement methods with emphasis on the 'why' in addition to 'how'.

Special emphasis is given to 'power equation methods', adapter evaluation, the six-port network analyser and noise. In these areas in particular, the book includes recently developed material that has not been previously published.

Starting with the field of equations, the book first outlines the theoretical basis for microwave circuit theory with particular emphasis on its similarity to, and difference from, the low frequency counterpart. This leads to an identification of parameters to be measured and is followed by a survey of measurement methods with the emphasis on the 'why' in addition to 'how'. Special emphasis is given to 'power equation method', adapter evaluation, the six-port network analyser and noise. In these areas in particular, the book includes recently developed material that has not been previously published The object of this text is to pave the way for the next generation of microwave metrologists by presenting ideas and concepts currently under discussion. In many cases, these are in the form of analytical tools which have been developed to simplify the solution of recurring problems