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Transparent electromagnetic shielding enclosure with CVD graphene
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Cavity resonant modes of shielding enclosure for housing electronic circuits may cause electromagnetic interference (EMI). Here, we present an effective approach by using graphene to suppress unwanted resonant modes while maintaining good transparency to visible light. The structure consists of graphene sheet on quartz substrate attached to the shielding enclosure made from indium tin oxide. We experimentally demonstrate that the proposed approach can lead to good absorption of microwave waves at a wide frequency range from 5 to 12 GHz and high attenuation of cavity modes up to 20–30 dB. Its effectiveness of EMI shielding averaged 20 dB is proven to be comparable with conventional metallic enclosures.
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