Characterization Model of Dielectric Properties of Cane Sugar Solution Over 0.5–14 GHz
Rujipas Sumranbumrung, Pirat Khunkitti, Apirat Siritaratiwat, Anan Kruesubthaworn
Abstract
The characteristic model of the dielectric properties of cane sugar solution is proposed. The dielectric properties of cane sugar solution were measured by using a slim-form coaxial probe based on the open-ended coaxial probe technique. The °Brix of cane sugar concentration was measured and analyzed by monitoring the dielectric constant and dielectric loss factor over the frequency range of 0.5–14 GHz at temperatures of 15 °C–55 °C. The Cole–Cole relaxation model was applied to characterize the complex permittivity of the cane sugar solution. This model provided the highest accuracy up to 99.48% and 98.33% for dielectric constant and loss factor, respectively. Hence, this model can be used to describe the complex permittivity of the cane sugar solution with variations in sugar concentrations and temperatures.