Effect of temperature on the electrical properties of polyvinyl chloride at microwave frequencies

C. Senthamil Selvia and S. Vee

Abstract

The dielectric constant, loss tangent and the a.c conductivity of polyvinyl chloride (PVC) at X- band (8-12GHz) and Ku- band (12-18GHz) microwave frequencies at temperatures ranging from 30 - 100° C have been measured by Von-Hippel method. Our preliminary studies show a peak value of the dielectric constant as 4.73 at 80°C at a Ku – band frequency of 15.9GHz, while the peak value of the conductivity at the same conditions is 9.89 x 10-3 s/cm. The results of the temperature variation study of the above mentioned electrical properties at 15.9Hz are presented. These results are compared with the values obtained for the same sample at X-band frequency of 9.4GHz.