Dielectric loss measurements — General techniques & significance

The meaning and significance of dielectric measurements, specifically dielectric constant and loss, have been presented. The influence of various factors, such as temperature and frequency, on dielectric measurements have been outlined. A synoptic view of the most important measuring techniques and methods from below 60 cps to microwave frequencies has been presented. In this review, the main emphasis has been upon placing each type of instrumentation into the frequency band where its capabilities are most readily utilized. The basic underlying features which determine precision, accuracy and sensitivity are mentioned. A summary of problems underlying electrode and connection errors is given to assist in guarding against excessive measurement inaccuracies. Various areas of this general subject will be covered in detail in following papers.