Abstract:
In this paper, we simulate the polarization
dependent metamaterial absorber (MMA) based on split
ring-dish (SRD) structure. The results have been compared
with dish (D) and ring-dish (RD) based structure in THz
range. The dish based MMA structure demonstrates the
perfect absorption at 5.4 THz, whereas ring-dish based
MMA exhibits two peaks at 2.7 and 5.6 THz. Further, by
splitting the ring (named as split ring-dish), absorption peak
at 2.7 THz is shifted to 4.2 THz. The surface current and
electric field distribution have been measured to provide
further understanding of absorptivity. The resonating
frequency of the SRD-MMA has been tuned with change in
incident and polarization angle.
