Multiband THz Metamaterial Absorber Based on Snowflake-type Resonators
Recently, the devices operating in the terahertz (THz) frequency band have aroused tremendous interests because of their gigantic potential applications in the areas such as security, public health, and biomedicine. In this work, ultrathin multiband THz metamaterial absorbers are proposed, and the design, simulation, and theoretical analysis of the absorbers are presented. First, a dualband absorber consisting of snowflake-type resonator array is designed, which is printed on a grounded polyimide dielectric spacer. Numerical simulations shows that the proposed structure has two perfect absorption peaks at 0.952 and 1.818 THz with absorption rates reaching 99.7% and 99.9%, respectively. By carefully designing the geometrical parameters and layout of the snowflake-type resonators, a quadband absorber with four perfect absorption peaks is implemented. The numerical simulation result shows that four different absorption peaks appear at 0.752, 0.950, 1.454, and 1.696 THz with the absorption rates of 98.8%, 97.8%, 92.1%, and 90%, respectively.
Junchuan Zhuge Di Bao Xiaopeng Shen Tiejun Cui
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
1093-1096
2014-08-01(万方平台首次上网日期,不代表论文的发表时间)