Wan Gao, Jianyang Wang, Qiannan Wu. Design and Investigation of a Metamaterial Terahertz Broadband Bandpass Filter Based on Dual Metallic Rings[J]. Laser & Optoelectronics Progress, 2021, 58(5): 0516001
- Laser & Optoelectronics Progress
- Vol. 58, Issue 5, 0516001 (2021)
Fig. 1. 3D structure and parameters of the simulation unit（left） and front view structure of the resonance unit (right)
Fig. 2. Transmission coefficient and insertion loss of terahertz filter at different inner diameters. (a) Transmission coefficient; (b) insertion loss
Fig. 3. Transmission coefficient and insertion loss of terahertz filter at different outer diameters. (a) Transmission coefficient; (b) insertion loss
Fig. 4. Transmission coefficient and insertion loss of terahertz filter at different outer ring widths. (a) Transmission coefficient; (b) insertion loss
Fig. 5. Transmission coefficient and insertion loss of terahertz filter at different inner ring widths. (a) Transmission coefficient; (b) insertion loss
Fig. 6. Transmission coefficient and insertion loss of terahertz filter at different substrate side lengths. (a) Transmission coefficient; (b) insertion loss
Fig. 7. Transmission coefficient and insertion loss of terahertz filter at different substrate thicknesses. (a) Transmission coefficient; (b) insertion loss
Fig. 8. Transmission coefficient and insertion loass of terahertz filter.(a) Transmission coefficient; (b) insertion loss
Fig. 9. Electric field distribution near the filter at 0.79 THz
Fig. 10. Surface current graphs of terahertz filter at different frequencies. (a) 0.37 THz; (b) 0.79 THz; (c) 1.06 THz
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Table 1. Design size of terahertz filter
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Table 2. Research results of terahertz filter
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