Abstract
Traditional electromagnetic interference shielding windows that can simultaneously reflect microwaves and transmit visible light are usually fabricated by depositing one metal mesh layer on the surface of the window. However, such a structure always suffers from strong Fabry–Perot resonance (FPR), which leads to the decline of shielding effectiveness (SE). Here, we analyze the mechanism of FPR from a perspective of the equivalent circuit model and further report a facile approach to minimize the FPR by depositing another high-resistance mesh layer on the back side of the shielding window, which can greatly reduce reflected waves, ensuring that interference cannot be formed. Simulation results prove that FPR can be effectively eliminated by the proposed method, and experiments further show that for a shielding window made with Schott B270 glass plate, the SE can be enhanced by 6.3 dB (76.6% energy attenuation) at declining points, while transmittance is only reduced by 1.6%.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Heyan Wang, Zhengang Lu, Yeshu Liu, Jiubin Tan, Limin Ma, and Shen Lin
Opt. Lett. 42(8) 1620-1623 (2017)
Changwei Yuan, Jinhua Huang, Yuxuan Dong, Yuehui Lu, Jia Li, Wenqing Liu, Genchu Tang, Shuomin Zhong, and Weijie Song
Opt. Lett. 46(7) 1648-1651 (2021)
Zhou-ying Jiang, Wenbin Huang, Lin-sen Chen, and Yan-hua Liu
Opt. Express 27(17) 24194-24206 (2019)