Design a multiband perfect metamaterial absorber based on hexagonal shapes

A perfect Multiband metamaterial absorber based on triple hexagonal shaped resonators has proposed in this paper. This absorber possesses a nearly wide angle perfect absorption of incidence wave and represents polarization independence. The absorption is occurred in three different frequencies. The absorptivity is as high as 94%, 95% and 99%, at 3.4(GHz), 4.6(GHz) and 6.4(GHz), respectively. The proposed metamaterial absorber has wide applications such as stealth technology, thermal detector and imaging. Moreover, a very good agreement between simulation and measurement results has been observed.