Fig. 1. Theoretical model.

Fig. 2. The reflection coefficient of metamaterial varies with the angle of incidence and the value of the electromagnetic parameters of the material: (a) TE wave; (b) TM wave.

Fig. 3. The reflection coefficient of metamaterial varies with the angle of incidence and the value of the electromagnetic parameters of the material: (a) TE wave; (b) TM wave.

Fig. 4. The reflection coefficient of metamaterial varies with incident angle and thickness: (a) TE wave; (b) TM wave.

Fig. 5. The relationship among the reflection coefficient of metamaterials and incident angle and the dielectric constant of z direction under TM wave irradiation.

Fig. 6. The relationship among the absorbing angle of the metamaterial absorber and the substrate thickness and imaginary part of .

Fig. 7. The relationship among the absorbing angle of the metamaterial absorber and the substrate thickness and imaginary part of .

Fig. 8. TE wave: (a) The relationship between imaginary part of and d for achieving broadband; (b) reflection properties of dispersive media backed with ground vary with incidence angle and frequency.

Fig. 9. TM wave: (a) The relationship between imaginary part of and d for achieving broadband; (b) reflection properties of dispersive media backed with ground vary with angle of incidence and frequency.