Microstrip sensor for product quality monitoring

In this work, we investigated the feasibility of using a microstrip sensor to monitor milk quality. The proposed microstrip sensor is composed of two symmetrical and independent rectangular microstrip patches. This method is based on a shift in the resonance frequency of the microstrip resonator caused by a change in the dielectric constant of the analysed milk. Simulations and measurements were performed in the study. The results indicate the effectiveness of the proposed microstrip patch in product quality assessment.