|
|||||
|
|
A flexible wideband bandpass terahertz filter using multi-layer metamaterials |
|
| Authors: | Lanju Liang Biaobing Jin Jingbo Wu Yi Huang Zhihui Ye Xiaoming Huang Dong Zhou Guosheng Wang Xiaoqing Jia Hai Lu Lin Kang Weiwei Xu Jian Chen Peiheng Wu |
| Affiliation: | 1. Research Institute of Superconductor Electronics (RISE), School of Electronic Science and Engineering, Nanjing University, Nanjing, 210093, China 2. Department of Communication, School of Electronic Science and Engineering, Nanjing University, Nanjing, 210093, China 3. Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, 210093, China |
| Abstract: | We make a flexible wideband bandpass filter at terahertz (THz) frequencies using multi-layer metamaterials. A very flat response in the passband can be obtained since the Fabry–Perot reflection inside the rigid substrate is eliminated. The center frequency is about 0.89 THz with a 3 dB bandwidth of 0.69 THz for normal incidence. The sharp band-edge transitions are 53 and 70 dB/THz to the rejection bands, respectively. The measured average insertion loss is 1.4 dB with a ripple of 0.8 dB. Furthermore, the transmission feature is insensitive to the polarization of incident wave due to the symmetric structure of the unit cell of the metamaterials. Also, it has a small change as the increase of the curvature of the flexible substrate. This result manifests that the multi-layer metamaterials can provide an effective way to design wideband THz devices. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |
