Abstract
Microwave sensors are the most extensively utilized sensors in the food industry, quality control, biomedical, and industrial applications. The perturbation method, in which the dielectric characteristics of the resonator affect Q-factor and resonance frequency, is used in this study to address the weakness of this technique. For material characterization of solid and liquid samples, this proposed sensor worked at 2.5GHz in the 1GHz to 4GHz range. These sensors were built on a substrate of RT/Duroid Roger 5880 with a dielectric constant of 2.2, a loss tangent of 0.0009, and a copper thickness of 0.00175mm. As a result, at 2.5GHz, this square split ring resonator (SSRR) sensor produces narrow resonance, low insertion loss, and a high Q-factor value of 430. As a result, the SSRR sensor's sensitivity is 98.59%, which is higher than earlier investigations. This evidence supports the proposed sensor's application as a material characterization tool, particularly for identifying material properties.
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