Metamaterial based fuel sensor

The developing technology has given us the opportunity to produce a new line of materials with exceptional electromagnetic behavior. These new materials, called Metamaterials (MTM), which are not found in nature, are materials designed in periodic structures with different and unique properties such as negative refraction. In this thesis, a Metamaterial based sensor structure was manufactured to distinguish branded and unbranded fuel samples at microwave frequencies. There are many studies on Metamaterials based sensor applications in the literature, but this study focuses on a new sensor application centered on metamaterial in X-band frequency range unlike the other studies. In the first step, the electromagnetic properties of the branded and unmarked fuel samples were obtained experimentally. For this purpose, the dielectric constants and loss tangent values of the branded and unbranded fuel samples were measured by using KEYSIGHT brand PNA-L N5234A Network Analyzer and a dielectric probe. In the second step, the experimental results have been used to create a metamaterial based highly efficient sensor which has an easy design and fabrication. For this, numerical studies were carried out by using FIT based simulator program. The experimental results and the numerical results of the sensor agree quite well with each other. For the proposed metamaterial sensor, designs in different structures were conducted and the numerical and experimental results for these structures have been examined.