Ultra Miniaturization and Transparency Frequency Selective Surface for Dual Band ISM Shielding

作者

  • Dongming Guo School of Science Jiangnan University, Wuxi 214122, China
  • Huaxin Zhu School of Science Jiangnan University, Wuxi 214122, China

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https://doi.org/10.13052/2024.ACES.J.390605

关键词:

frequency selective surface (FSS), ISM shielding, polarization stability, transparency, ultraminiaturized

摘要

This article presents an ultraminiaturized frequency selective surface (FSS) for shielding 2.4 GHz and 5.8 GHz (ISM) signals. The unit cell size is 0.056λ × 0.056λ (λ is the free space wavelength at the first resonant frequency). It has smaller cell size and good transparency compared to previous ISM band studies, and transparency at 54%. The proposed FSS design consists of a wall structure and a compound square loop with 2.4 GHz and 5.8 GHz resonance frequencies for ISM band coverage. This FSS structure was fabricated on float glass with a dielectric constant of 8 by a photolithographic process. The fabricated FSS structure has excellent angular stability and polarization stability, which is further verified by experimentation. An easy optimization method is proposed to tune the independent resonant frequencies by optimizing the geometries individually. This FSS is interpreted by filtering through surface induced currents and equivalent circuit models. A prototype of the proposed FSS is fabricated and measured. The simulation results are in good agreement with the measured results. The proposed FSS has polarization insensitivity and 80 angle stability and is suitable for solving the EMI problem in ISM band.

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Dongming Guo was born in QuanZhou, Fujian, China, in 2000. He received the B.S. degree from the Xiamen University of Technology, Xiamen, China, in 2022. Currently, he is focusing on antenna and microwave devices.

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Huaxin Zhu received his Ph.D. degree in 2011. Since 2011, he has worked on optical thin film design, preparation and frequency selective surfaces. Currently, he is an Associate Professor in the Jiangnan University, School of Science.

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已出版

2024-06-30

栏目

General Submission