Fig. 3
(a) Average of absolute value of transmission coefficients (\(\:\left|{f}_{1,final}\right|\:and\:\left|{f}_{2,final}\right|\)) and (b) reflection coefficients \(\:\left(\left|{b}_{1,final}\right|\:and\:\left|{b}_{2,final}\right|\right)\:\)versus the frequency of incident wave onto the structure displayed in Fig. 1.