Dual-band polarization-independent metamaterial absorber for radar stealth technology

摘要

The design, simulation and analysis of a dual-band metamaterial absorber (MMA) working at the microwave frequencies are presented. The single unit cell consists of two nested closed hexagon ring resonators and a metallic background plane, separated by a dielectric layer with only 0.7-mm thickness. The simulation results show that the absorber has two distinctive absorption peaks located at frequencies 8.1GHz and 10.7GHz with absorption rates of 0.95 and 0.94, respectively. In addition, due to the symmetrical structure, the designed absorber is polarization insensitive.