Fig. 1. Schematics of unit cell of dual-stopband metamaterial filter. (a) Three dimensional model; (b) top view

Fig. 2. Simulated S -parameter curve of dual-stopband metamaterial filter

Fig. 3. Simulated S -parameter curves of vertical incident electromagnetic wave with different polarization angles

Fig. 4. Electric field intensity distributions of resonance units at resonant frequencies of (a) 0.131 THz and (b) 0.182 THz

Fig. 5. Surface current distributions of resonance units at resonant frequencies of (a) 0.131 THz and (b) 0.182 THz

Fig. 6. Flow chart of surface micro-manufacturing technology

Fig. 7. Dual-stopband terahertz metamaterial filter sample. (a) Practical flattening picture; (b) practical flexible bending picture

Fig. 8. Simulated and measured transmission performance of dual-stopband terahertz metamaterial filter