Solid characterization using planar microwave resonator sensor

Aswir, Rahmi Silvia (2021) Solid characterization using planar microwave resonator sensor. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

Preview

Text (Full Text) Solid characterization using planar microwave resonator sensor.pdf - Submitted Version Download (6MB) | Preview

Abstract

Microwave sensor in detecting material characterization is the most popular sensor in application of food industry, quality control, biomedical and industrial application. Microwave resonant technique is one of the potential techniques for highly accurate measurement of dielectric material characterization at single or discrete frequency. Conventionally, material characterization has been realized by using conventional waveguide, dielectric and coaxial resonators which provide high sensitivity and accuracy. However, traditionally resonator sensor is usually bulky in size, high cost manufacturing and consume high volume for detection of the previous sample of material under test (MUT). Thus, planar resonant techniques are the most popular techniques over past few years due to their advantages of compact in size, low cost and ease of fabrication. Thus, this thesis introduces high q-factor planar microwave resonator sensor to overcome the weakness of this technique by using perturbation theory in which the dielectric properties of resonator affects Q- factor and resonance frequency. This sensor operates at 2.27 GHz for testing material characterization solid or powdery samples. The sensor is design by using computer simulation technology (CST) and analyze using vector network analyzer (VNA). The design of the structure resonator based on the mathematical equation and optimization of the parameter value. As a result, this sensor produces narrow resonance, low insertion loss and high Q-factor value 240. Thus, the sensitivity and accuracy of the sensor is more than 85% compare with the previous researchers. This proof that the proposed sensor as a solution to characterize material particularly in determining material properties and quality.

Actions (login required)

View Item