Abstract-Investigating flexible band-stop metamaterial filter over THz

Yuhua Yang, Yongqing Xu, Binzhen Zhang, Junping Duan, Li Yan, Hongcheng Xu, Yunpeng Liu, Yanan Shi,


https://www.sciencedirect.com/science/article/abs/pii/S003040181930029X

Metamaterial filter is a novel type of photoelectric device. In this study, a triple-band band-stop filter for terahertz is fabricated by magnetron sputtering of periodic metamaterial resonators on flexible polyimide substrates. The band-stop resonant points of the filter are 107.3, 167.45, and 209.9 GHz, and the 3 dB bandwidths are 14.13, 14.03, and 22.44 GHz. S21 parameters at the resonance point reach $-$30.217, $-$30.432, and $-$38.618 dB, thereby possibly achieving an excellent frequency blocking performance. Simultaneously, the stop-band can be adjusted by controlling the length of the metamaterial unit size, thus modifying the frequency of the filter.

Abstract-Analysis and Design of Complementary Ring Type Metamaterial Filter in THz Wave Domain

Wu Pan, Jun Chen, Tianbo Duo, Zichen Liu

http://iaesjournal.com/online/index.php/TELKOMNIKA/article/view/5695

In this paper, the complementary ring type metamaterial unit is theoretically analyzed by using the spectral domain approach. A terahertz bandpass filter is designed, which consists of triple-layer complementary ring metamaterial. The center frequency of the filter is 338GHz, the transmission rate in pass band reaches 97%, the maximum insertion loss in pass band reaches 0.62dB and 3dB bandwidth reaches 75.9GHz. The filter shows stable filtering properties at different polarization wave and the same polarized wave at different incident angles within the scope of 20°. The range of operating frequency matches the first terahertz atmosphere communication window, so it can be used in the field of terahertz atmosphere communication.