Design and theoretical study of a polarization-insensitive multiband terahertz metamaterial bandpass filter
Li Hai-Peng, Fu Wen-Yue, Shen Xiao-Peng, Han Kui, Wang Wei-Hua
       

(color online) Plots of simulated transmission coefficient S21 frequency for different incident angles for (a) TE and (b) TM polarizations.