Design and analysis of dual band T-Resonator microwave sensor for material characterization

Md Kamal, Muhammad Amir Is’ad (2022) Design and analysis of dual band T-Resonator microwave sensor for material characterization. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Microwave sensor which is known as resonant sensor are design that is the most popular for sensor application in detecting material characterization. This design can be seen in food industry, biomedical and material industrial application. Measurement of dielectric constant on any material is important in those respective industry by using microwave resonant technique which is used at single or discrete frequency. Conventionally, there are many kinds of resonant sensor, and has been realized in the respective industry such as waveguide, coaxial and dielectric resonator. Nevertheless, their traditional technique produces them in bulky size and high cost for manufacturing the resonator. Thus, past research conclude that planar resonant technique has the advantages due to their size comparably smaller resulting low costs manufacturing process. However, by comparing the most important perspective which is sensitivity and Q-factor, the planar technique is definitely lower than the others and limited by the range of resonant it produced. Therefore, this thesis introduces a different implementation of the same planar technique which is dual band metamaterial to overcome the disadvantages of sensitivity. The dual band sensor operates in two different frequencies in range of 1GHz to 5 GHz. It can be used with either solid, liquid, gas or powder, depends on the sensor structure and design with Polydimethylsiloxane (PDMS) as a container for the material under test (MUT). The design will be simulated in computer simulation technology (CST) and as a result, produces narrow resonance and high Q-factor comparable to previous researchers’ thesis. This proof that the proposed sensor can be one of the solutions to characterize material dielectric constant for determining its properties and quality level.

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