Design and Simulation of Square Split Enclosed Labyrinth Maze Shaped Metamaterial Absorber for S-band and Ku-band Applications.

Abstract

In this thesis, a multi band metamaterial absorber (MMA) at S and Ku band is presented in microwave frequency band. The unit cell geometry comprises of two split ring resonators and two square shapes structure in the top surface of a FR-4 substrate. Simulation result shown that the structure has multi-band absorption response with S-band and Ku-band. The proposed patch comprises two square split-ring resonators (SSRR) generate five corresponding resonances at 2.44 GHz, 3.57 GHz, 12.039 GHz, 15.516 GHz and 16.713 GHz with 99.4%, 91.65%, 98.75%, 95.37% and 95.77% absorption, respectively. The complex values of permittivity, permeability, refractive index, and surface current were extracted and discussed. The suggested MMA sensor also has a better sensitivity for identifying various hydrocarbons by monitoring changes in the permittivity of the test items. Additionally, the highest reflection band for the MMA sensor arrangement was around 11.28 GHz. The band shift between heptane and octane is 0.01 GHz at its lowest. That the MMA's typical sensitivity for various hydrocarbon compounds is 1.4 GHz/ɛ. This MMA's high absorbance makes it suited for a variety of microwave applications, including those for Wi-Fi, mid-range 5G, and hydrocarbon sensing.