Characterization of Liquid Sample Using Complementary Split Ring Resonator Sensor

This paper presents the characterization of a liquid sample using complementary split-ring resonator (CSRR) sensor. In this work, five CSRR sensors were designed that resonate at a frequency range of 1 GHz until 5 GHz. Five liquid samples were chosen, which are water, seawater, distilled water, oil, and ammonia. The sensors sense the sample through the shift of resonant frequency. The simulation results show that with the presence of the samples on the split-ring plane, the resonant frequency is shifted to the lower frequency, with ammonia gave the largest frequency shift, which is 1.8 GHz of frequency shift at 5 GHz.