红外与毫米波学报, 2019, 38 (6): 716, 网络出版: 2019-12-27 复制并引用该论文  被引通知

图 & 表

图 1. Structure of the proposed filter （a）Top view of designed filter based on compact array, （b） the unit cell of the designed filter based on compact array, and （c）the unit cell of a traditional band-stop THz filter with same parameters

Fig. 1. Structure of the proposed filter （a）Top view of designed filter based on compact array, （b） the unit cell of the designed filter based on compact array, and （c）the unit cell of a traditional band-stop THz filter with same parameters

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图 2. Transmission coefficient of two designed filters （a）transmission spectrum of filter with compact array,and （b）transmission spectrum of filter with traditional repetitive design

Fig. 2. Transmission coefficient of two designed filters （a）transmission spectrum of filter with compact array,and （b）transmission spectrum of filter with traditional repetitive design

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图 3. Surface current density on second metal layer of designed filter （a） currents of compact filter at f_m, and （b） currents of traditional filter at f₁

Fig. 3. Surface current density on second metal layer of designed filter （a） currents of compact filter at f_m, and （b） currents of traditional filter at f₁

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图 4. The resonant modes of designed filter based on compact array （a） resonant mode at f_m, and （b） resonant mode at f_e

Fig. 4. The resonant modes of designed filter based on compact array （a） resonant mode at f_m, and （b） resonant mode at f_e

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图 5. The transmission spectrum for a wide-angle incidence from 0° to 60°

Fig. 5. The transmission spectrum for a wide-angle incidence from 0° to 60°

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图 6. Unit cell of several commonly used resonators （a） structure Ⅰ, （b） structure Ⅱ, and （c） structure Ⅲ.Note: in Fig. 6, A₁ = A₂ = A₃ = 80 μm, L₁ = 75 μm, L₂ = 60 μm, L₃ = 55 μm, K₁ = 40 μm, K₂ = 65 μm, K₃ = 50 μm, W₁ = W₂ = W₃ = 12 μm

Fig. 6. Unit cell of several commonly used resonators （a） structure Ⅰ, （b） structure Ⅱ, and （c） structure Ⅲ.Note: in Fig. 6, A₁ = A₂ = A₃ = 80 μm, L₁ = 75 μm, L₂ = 60 μm, L₃ = 55 μm, K₁ = 40 μm, K₂ = 65 μm, K₃ = 50 μm, W₁ = W₂ = W₃ = 12 μm

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表 1基于紧凑阵列和传统周期阵列的对比

Table1. Comparison of structures with compact arrays and traditional repetitive arrays

Performance Structure Ⅰ Structure Ⅱ Structure Ⅲ TF CF TF CF TF CF 10 dB Bandwidth/GHz 220 282 520 790 410 480 Stopband Depth /dB -33.0 -42.7 -54.8 -38.0 -40.6 -52.0 Slope of rising/trailing edges （dB/THz） 252/175 467/320 313/183 318/328 247/107 418/156 resonant Point 1 2 2 2 1 2

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宁玉鹏, 娄淑琴, 贾洪志, 刘锡丹, 孙璞. 基于紧凑十字阵列的角度无关的宽带太赫兹带阻滤波器[J]. 红外与毫米波学报, 2019, 38(6): 716. Yu-Peng NING, Shu-Qin LOU, Hong-Zhi JIA, Xi-Dan LIU, Pu SUN. An angle-independent broadband terahertz bandstop filter based on compact cross-shaped array[J]. Journal of Infrared and Millimeter Waves, 2019, 38(6): 716.