Tunable wideband absorber based on resistively loaded lossy high-impedance surface
Dang Ke-Zheng, Shi Jia-Ming†, Wang Jia-Chun, Lin Zhi-Dan, Wang Qi-Chao
       
Composite patterns with different displacements between the two FSS layers from 0 to 8 mm with a 2-mm step in x direction, corresponding to panel (a) to panel (e) respectively.