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
       
Variations of capacitance C 12 with the movement distance of the top FSS. The other extracted circuit parameters for the proposed equivalent circuit model are R 1 = 420 Ω, L 1 = 4.88 nH, and C 1 = 29.84 fF.