Study on the absorption properties of a curved metamaterial absorber

We investigate the absorption properties of a curved metamaterial absorber (CMA) in microwave. The simulation results show that the CMA could be used with better performance than the traditional planar metamaterial absorber (PMA) with the same physical parameters in exciting more perfect absorption peaks. Moreover, the absorption properties are related to the polarization direction of electromagnetic (EM) waves, which make it possible for the CMA to be used as frequency selective absorber. In addition, the effects of structure parameters of the unit cell on absorption properties are analyzed in detail.