Fig. 2

a Absorption (red line), reflection (blue line) and transmission (black line) of the designed triple-band MBLA; b simulated absorption spectra of designed device as a function of frequency under two orthogonal polarizations (0° means that the polarization is along the x axis, while 90° means that the polarization is along the y axis); c comparison of absorption properties of designed device (i.e., the combined structure or patch & notches together or analogy I-typed resonator) and the rectangular patch absorber; d electric field |E| distribution of mode D for rectangular patch absorber with the blue line at c; e magnetic field |Hy| distribution of mode D for rectangular patch absorber with the blue line at c; f electric field |E| distribution of mode E for rectangular patch absorber with the blue line at c; g magnetic field |Hy| distribution of mode E for rectangular patch absorber with the blue line at c