Comparison of copper and graphene-assembled films in 5G wireless communication and THz electromagnetic-interference shielding-Reference-Cited by-同舟云学术

Comparison of copper and graphene-assembled films in 5G wireless communication and THz electromagnetic-interference shielding

Published:2023-02-22 Issue:9 Volume:120 Page:
ISSN:0027-8424
Container-title:Proceedings of the National Academy of Sciences
language:en
Short-container-title:Proc. Natl. Acad. Sci. U.S.A.

Author:

Song Rongguo¹,Mao Boyang²³^ORCID,Wang Zhe¹⁴^ORCID,Hui Yueyue¹,Zhang Ning¹,Fang Ran¹,Zhang Jingwei¹,Wu Yuen⁵^ORCID,Ge Qi³^ORCID,Novoselov Kostya S.²³⁶⁷^ORCID,He Daping¹⁴^ORCID

Affiliation:

1. Hubei Engineering Research Center of Radio-Frequency (RF)-Microwave Technology and Application, Wuhan University of Technology, Wuhan 430070, China

2. National Graphene Institute, University of Manchester, Manchester M13 9PL, UK

3. Chongqing Two-Dimensional (2D) Materials Institute, Chongqing 400714, China

4. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China

5. School of Chemistry and Materials Science, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), the Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei National Laboratory for Physical Sciences at the Microscale, Hefei 230026, China

6. Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore

7. Centre for Advanced Two-Dimensional (2D) Materials, National University of Singapore, Singapore 117546, Singapore

Abstract

Since first developed, the conducting materials in wireless communication and electromagnetic interference (EMI) shielding devices have been primarily made of metal-based structures. Here, we present a graphene-assembled film (GAF) that can be used to replace copper in such practical electronics. The GAF-based antennas present strong anticorrosive behavior. The GAF ultra-wideband antenna covers the frequency range of 3.7 GHz to 67 GHz with the bandwidth (BW) of 63.3 GHz, which exceed ~110% than the copper foil-based antenna. The GAF Fifth Generation (5G) antenna array features a wider BW and lower sidelobe level compared with that of copper antennas. EMI shielding effectiveness (SE) of GAF also outperforms copper, reaching up to 127 dB in the frequency range of 2.6 GHz to 0.32 THz, with a SE per unit thickness of 6,966 dB/mm. We also confirm that GAF metamaterials exhibit promising frequency selection characteristics and angular stability as flexible frequency selective surfaces.

Funder

The National Natural Science Foundation of China

Publisher

Proceedings of the National Academy of Sciences

Subject

Multidisciplinary

Link

https://pnas.org/doi/pdf/10.1073/pnas.2209807120

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