Fig. 1. Schematic diagram of resistive film-based absorber. (a) Structural diagram of unit cell; (b) top view of unit cell; (c) side view of unit cell

Fig. 2. Prototype and measurement. (a) Schematic diagram of sample; (b) resonant structure based on conductive plastic film;(c) experimental platform

Fig. 3. Reflection spectrum and absorption spectrum. (a) Reflection spectrum; (b) absorption spectrum

Fig. 4. Equivalent impedance of proposed absorber

Fig. 5. Electric field distribution and power loss distribution at resonant frequency. (a)(b) Electric field distribution; (c)(d) power loss distribution

Fig. 6. Effects of different structural and material parameters on absorption properties

Fig. 7. Effect of surface resistance of conductive plastic film on absorption spectrum

Fig. 8. Effects of H₁ and H₂ on absorption spectrum. (a) H₁; (b) H₂

Fig. 9. Effects of W, R₁ and R₂ on absorption spectrum. (a) W; (b) R₁; (c) R₂

Fig. 10. Absorption spectrum of incident wave under different polarization angles. (a) Simulated result; (b) experimental result

Fig. 11. Effects of different incident angles on absorption spectrum under TE polarization. (a) Simulated result; (b) experimental result

Fig. 12. Effects of different incident angles on absorption spectrum under TM polarization. (a) Simulated result; (b) experimental result