A Broadband Terahertz Metamaterial Absorber Based on Square Ring Resonators
A simple design of broadband metamaterial absorber (MA) is numerically investigated at terahertz frequencies in this paper. The unit cell of this absorber consists of two square rings with different geometric dimensions, a dielectric substrate and continuous metal film. A wide frequency band ranging from 2.95 THz to 3.71 THz with absorption rate of over 90% is obtained. Distributions of surface current density on the front and back metallic layers are illustrated. Finally, the loss contributions of metallic structures and dielectric substrate are also discussed. The proposed absorber is an ideal candidate as absorbing elements in many applications, such as thermal detectors, terahertz imaging, and stealth technology.
Guo-Dong Wang Jun-Feng Chen Xi-Wei Hu Ming-Hai Liu
State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology, Wuhan 430074, 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
300-304
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）