Design Of Planar Microwave Sensor To Detect Permittivity Of Unknown Material

Mohd Noor, Nor Atikah (2018) Design Of Planar Microwave Sensor To Detect Permittivity Of Unknown Material. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Planar microwave resonant sensor is a device that use to measure using microwave frequency that is considered one of the most precision and sensitivity than other methods. Most of the resonator are intended to detect permittivity of material in particular application areas such as food quality control, medical, bio-sensing and others. These day, some products on the business sectors and shopping centers have prohibited or unhealthy ingredients that can effect on consumers health. The planar structure experiencing from poor Q factor and low sensitivity, which inhibit the usage wide industrial applications. Therefore, complementary split ring resonator (CSRR) is use to verifying and identifying the dielectric properties in material and it is produce higher Q-factor with ability to destroy the undesired harmonic imitation. The main purpose of this project is to identify, simulated and measure a device that can identify material properties in terms of permittivity, resonant frequency and quality factor. For experimental verification, CSRR sensor with 2.64GHz is design using full wave electromagnetic solver which the CST Microwave Studio use for simulation. The sensor are design and fabricated on 0.508 thick RT/Duroid 4350b substrate, and testing is carried out using network analyzer.

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