Simple Microwave Technique for Independent Measurement of Sample Size and Dielectric Constant with Results for a Gunn Oscillator System

Standard perturbation theory analysis has been used to develop a new microwave technique for simultaneously and independently measuring the size and dielectric constant of dielectric samples. Gunn flange oscillators have heen used to show that simple and low cost systems give measurement accuracies better than 5 percent when applied to nylon, Teflon, and quartz samples. The techniques should be particularly useful with samples of irregular cross section.