Realization for dual-band high-order perfect absorption, based on metamaterial

This is the authors' abstract. We don't add key points for this paper.

By controlling the incident angle of electromagnetic (EM) wave, we investigated the establishment of dual-band and high-order behavior in an ultrathin metamaterial perfect absorber. When the incident angle of EM wave is θ =30°, the fundamental perfect absorption peak is preserved (at 102 MHz), and the high-order absorption peaks reach 99.9% (at 6.26 GHz) and 97.4% (at 6.55 GHz). These results are confirmed by both simulation and experiment. We believe that our results can be widely utilized in order to realize meta-devices (such as sensors, filters and detectors, radio-frequency energy harvesters) for future applications in the WiMAX band.