Purity detection of some liquids by using transmission line based metamaterial

The aim of this thesis is to design and fabricate two kind of metamaterial-based sensor. One of them, determine the purity of Methanol's and Ethanol's mixture in the water by using the octagonal form of the resonator and the sample holder. Other one is designed by utilizing transmission line integrated hexagonal shaped metamaterial based sensor which can detect and determine some materials with each other for example determining of Ammoniac, Pure water, Iso Propyl Alcohol (IPA) and Propylene Ethylene Glycol (PEG). First proposed structure has been employed in the 8-12 GHZ frequency band and the second structure can be used in the 1-8 GHZ frequency band. The important thing in the both of two work are the changes in the waveform at the resonance frequency. The output waveform of materials (reflection coefficient S11 or transmission coefficient S12) must be change in liner figure by considering the dielectric coefficient. We use copper for metal layer and resonator and also use FR-4, Isola IS680 (3.2DK) (lossy) for the substrate layer. We simulate one unit cell of this two kind of metamaterial sensor by CST microwave software and then achieve the results and evaluate them. Both the numerically and experimentally tests, give same outcomes and results and they will be in good agreement with each other. These proposed structure can be used in many application where the purity and determining of some materials might be necessary.