Wide-Angle Ultra-Broadband Metamaterial Absorber with Polarization-Insensitive Characteristics
Peng Chen2,3, Xianglin Kong2,3, Jianfei Han1, Weihua Wang1, Kui Han1, Hongyu Ma2,3, Lei Zhao3*, and Xiaopeng Shen1*
1School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China 2National and Local Joint Engineering Laboratory of Internet Application Technology on Mine, China University of Mining and Technology, Xuzhou 221116, China 3School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China
Abstract：An ultra-wideband metamaterial absorber is developed, which is polarized-insensitive and angular-stable. Three layers of square resistive films comprise the proposed metamaterial. The optimal values of geometric parameters are obtained, such that the designed absorber can achieve an ultra-broadband absorption response from 4.73 to 39.04 GHz (relative bandwidth of 156.7%) for both transverse electricity and transverse magnetic waves. Moreover, impedance matching theory and an equivalent circuit model are utilized for the absorption mechanism analysis. The compatibility of equivalent circuit calculation results, together with both full-wave simulation and experimental results, demonstrates the excellent performance and applicability of the proposed metamaterial absorber.
2021, Vol. 38 
