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.
- Chapter 2: Foundations of microwave circuit theory
- Chapter 3: Elementary boundary conditions
- Chapter 4: Multi-port boundary conditions
- Chapter 5: Elementary two-port applications
- Chapter 6: Amplitude stabilisation and multi-channel isolation
- Chapter 7: The measurement problem at microwave frequencies
- Chapter 8: The fundamental equationof microwave metrology
- Chapter 9: The linear fractional transform
- Chapter 10: The slotted line technique of impedance measurement
- Chapter 11: Attenuation measurement
- Chapter 12: The microwave reflectometer
- Chapter 13: Precision power measurement
- Chapter 14: Power meter applications
- Chapter 15: Power equation methods
- Chapter 16: The automatic network analyser
- Chapter 17: The 'Six-port' network analyser
- Chapter 18: Adapter evaluation techniques
- Chapter 19: Noise in communication systems
- Chapter 20: Noise standards and radiometry
- Chapter 21: A scattering description ofAmplifier noise
During his tenure of more than 30 years at the National Bureau of Standards, Glenn F. Engen has published over forty papers in the field of microwave metrology. His contributions to the art have been recognised by Department of Commerce Gold and Silver Medals, the NBS Applied Research Award, the (Instrumentation and Measurement) Society Award, the Woodington Award for Professionalism in Metrology, the IEEE membership rank of Fellow and the ARFTG Automated Measurement Career Award.