Permittivity Measurement Technique for Inhomogeneous Dielectric Materials

Abstract

The new method is proposed to measure the average permittivity of inhomogeneous dielectric polymeric materials at millimetre-wave band. For practical implementation of the method the two-shoulder antenna with piecewise linear phase distribution of fields was designed. In the course of measurements the geometrical dimensions of antenna is varied; in so doing the phase jump is linearly associated with its dimensions.