Abstract
This paper proposed a single port rectangular microwave resonator sensor. This sensor operates at the resonance frequency of 4GHz. The sensor consists of micro-strip transmission line and applied the enhancement method. The enhancement method is able to improve the return loss of the sensor, respectively. Plus, the proposed sensor is designed and fabricated on Roger 5880 substrate. Based on the results, the percentage of error for the proposed rectangular sensor is 0.2% to 8%. The Q-factor of the sensor is 174.
Highlights
In recent years, material characterization techniques have been introduced
The electromagnetic waves are directed to the material under test (MUT), and the properties of the sample is detected from the reflection coefficient that occurs in the defined reference plane
After simulation work done, it shows that the antenna bandwidth had been enhanced by the addition of the modified Edge Couple Split Ring Resonator (EC-SRR)
Summary
Many techniques are available to measure the real part of the complex permittivity or dielectric constant. From the structure of molecule inside the material, the permittivity can be determined. The response of material to the electrical signal depends on the permittivity of the material. The accurate determination of the permittivity is an important task for microwave or radio frequency circuit design, antenna design and to the microwave engineering [1,2,3,4]. The changes of dielectric properties of material or material characterization are widely used in many fields such as food industry, quality control, bio-sensing or medical industry [5,6,7,8]
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