Polarization and wide angle independent perfect metamaterial triple band absorber based on hexagonal shapes

Abstract

A novel metamaterial absorber (MA) based on triple hexagonal shaped resonators has proposed in this paper. This metamaterial unit cell absorber possesses a nearly wide angle perfect absorption of incidence wave and 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. An important feature of this metamaterial absorber is easy fabrication and maximum absorption is observed in three different frequencies. 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.