Microwave Dielectric Measurement of Liquids by using Waveguide Plunger Technique

This paper describes a using the microwave bench test to obtained dielectric constant (ɛ′) and the dielectric loss (ɛ′′) of liquids by using waveguide plunger technique. Measurements were made with some non-polar and polar liquid. The non-polar liquids are benzene and carbon tetrachloride. The dielectric constant and the dielectric loss of dilute solutions of bromobenzene in benzene have been measured. All of solutions measured at 10.5 GHz and temperature 25. This method is suitable for the accurate determination of the dielectric parameters of non polar or weakly polar or of dilute polar liquids in non-polar solvents.