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

被引：42

作者：

Song, Rongguo ^{[1
]}

Mao, Boyang ^{[2
,3
]}

Wang, Zhe ^{[4
]}

Hui, Yueyue ^{[1
]}

Zhang, Ning ^{[1
]}

Fang, Ran ^{[1
]}

Zhang, Jingwei ^{[1
]}

Wu, Yuen ^{[5
]}

Ge, Qi ^{[3
]}

Novoselov, Kostya S. ^{[2
,3
,6
,7
]}

He, Daping ^{[1
]}

机构：

[1] Wuhan Univ Technol, Hubei Engn Res Ctr Radiofrequency RF Microwave Te, Wuhan 430070, Peoples R China

[2] Univ Manchester, Natl Graphene Inst, Manchester M13 9PL, England

[3] Graphene Univ, Chongqing Two Dimens 2D Mat Inst, Chongqing 400714, Peoples R China

[4] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China

[5] Univ Sci & Technol China, Ctr Excellence Nanosci, Collaborat Innovat Ctr Chem Energy Mat iChEM, Sch Chem & Mat Sci,Chinese Acad Sci CAS, Hefei 230026, Peoples R China

[6] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore

[7] Natl Univ Singapore, Ctr Adv Two Dimens 2D Mat, Singapore 117546, Singapore

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2023年 / 120卷 / 09期

基金：

中国国家自然科学基金;

关键词：

graphene-assembled film; 5G technology; flexible electronics; wireless communication; electromagnetic protection; HIGH-CONDUCTIVITY; PERFORMANCE;

D O I：

10.1073/pnas.2209807120

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Since first developed, the conducting materials in wireless communication and electro-magnetic 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 similar to 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.

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