Miniaturized and Optimum thickness Low profile Fan Blade Electromagnetic Wideband Metamaterial Absorber

The purpose of this article is to use Metamaterials and a straightforward metallic structure resembling a fan blade loaded with resistive components to construct wideband absorbers in microwave frequencies ranging from the X band to a portion of the K band. An appropriately fan-like structure with three SMD resistor-loaded blades and a minor arc is copper-etched on one side of an FR-4 substrate and then air spacer before a continuous metallic ground of 0.035 mm in thickness is applied to the other side. Simulation results show that the absorption bandwidth of the metamaterial absorber exceeds 90% in the range 11.37 to 23.53 GHz, which corresponds to a bandwidth of 12.16 GHz at 3.27mm overall thick. High absorption can be traced back to the impedance plot and surface current distributions. The absorptivity plot concerning the variety of both phi and theta is plotted to examine the way of behaving about polarization awareness and diagonal rate. Additionally, it has numerous uses in EMI/EMC, radar cross-section reduction, stealth technology, and other fields.