Calibration-independent method for complex permittivity determination of liquid and granular materials

Abstract

A new calibration-independent method for complex permittivity extraction of liquid and granular materials is proposed. The advantages of the method are: it only needs the measurement of one measurement cell loaded with the sample; and it eliminates, if any, nonuniformities of the extra measurement cell, which is needed by the methods given in the literature. The method is validated by calibrated and uncalibrated complex scattering parameter measurements of the ethyl alcohol poured into a waveguide cell at X-band.