Improved Simulation-Based Circular Microwave Sensor for Water Quality Assessment

This paper presents the use of a circular Complementary Split Ring Resonator (CSRR) sensor for water quality assessment. The sensor is used particularly to detect the PH-change and Total Dissolved Solids (TDS) as main contaminants of water. Two circular CSRR are designed at two different frequencies namely, at 1 GHz and 3 GHz, respectively to measure the sensitivity to multiple water samples of different pH and TDS levels. The results showed improved sensitivity for pH measurement as compared to other recent CSRR sensors published in the open scientific literature.