The Preliminary Microwave Metamaterial Absorber Based on Ring-Shaped for Stealth Technology

Abstract Controlling electromagnetic waves on the material is needed by several applications such as sensors, stealth technology, and energy harvesting. An artificial that could control called metamaterial. Meanwhile, a metamaterial absorber can absorb wave. Two concepts be used to explain absorbing phenomena absorber: matching impedance of air part imaginary high index refractive collectively or theory interference destructive. The correlation with destructive has been found Yudistira in his previous works. In this study, preliminary research absorbers based ring shape presented. 40 mm, 35 30 25 mm ring-shaped widths are applied work. We numerical simulation work understand performance ring-shaped. CST microwave studio was for absorbance peak results w=20, w=17.5, w=15, w=12.5 0.92 at 3.43 GHz, 0.95 3.7 4.04 GHz 0.99 4.47 severally. maximum yielded absorbances width