Effect of Cross-Polarization in the Absorption of Metatmaterial Absorber

In a recently published report, Somak Bhattacharyya et al. 2016 presented a broadband metamaterial absorber based on a single split ring resonator. He proposed that such an absorber can achieve a broadband absorption which is from 6.70 GHz to 15.82 GHz with above 90% absorptivity. In this paper, the absorber proposed Somak Bhattacharyya et al. is recalculated again and justified that to have ignored the cross-polarization conversion. It is observed that this absorber has no absorption spectrum which is over 90%. Further, we propose two solutions to eliminate the cross-polarization conversion so that it can realize energy absorption again.