Electrical properties of dielectric materials at intermediate frequencies

الملخص EN

In this work a coaxial cable is constructed to be used as a sample holder to measure some electrical properties of polymer samples.

Complex dielectric constant, electrical conductivity and attenuation for Teflon, PVC and Plexiglas are measured at certain frequencies.

All measurements are carried out at room temperature between 5 and 1800 MHz Measurements of scattering parameters are carried out using network analyzer device which measures the magnitude and phase angle.

From these measurements dielectric constant, which involves permittivity (real part) and loss factor (imaginary part), is determined as a function of frequency.

Electrical conductivity and attenuation are measured from their relation with loss factor through the sample or media.

The coaxial cable provided us with a satisfactory method for measuring electrical properties.