Modeling for multi-resonant behavior of broadband metamaterial absorber with geometrical substrate*

Project supported by the National Natural Science Foundation of China (Grant No. 51302312), the Fund for Discipline Construction of Beijing University of Chemical Technology (Grant No. XK1702), and the Fundamental Research Funds for the Central Universities, China (Grant No. Jd1601).

Zhang Kai-Lun1, Hou Zhi-Ling1, †, Bi Song2, Fang Hui-Min1
       

(color online) (a) Schematic diagram of parallel (left), series (middle), and series-parallel combinations (right) of composites. (b) Frequency dependence of reflection loss of GAS with different area ratios, (c) area ratio dependence of peak frequency of the GAS; (d) comparison of calculated reflectivities with (including absorption) and without diffraction beam (including absorption and scattering), and (e) electric field distributions of 10.65 GHz and 27 GHz at area ratio x = 0.5.