EMI Shielding Materials and Absorbers for 5G Communications

Tong, Colin

doi:10.1007/978-3-031-17207-6_6

Cited by 4 publications

(1 citation statement)

References 15 publications

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“…Currently, more and more attention is paid to shielding materials, which have a high shielding efficiency with minimal weight and size parameters and production costs [1,2]. Metallic micro-and nanostructures [3][4][5], carbon nanomaterials [6][7][8][9][10], MXenes [11][12][13][14], oxides [15,16], conductive polymers [17] with different morphology and particle size are considered as effective shielding materials.…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Scalable Manufacturing Silver Transparent Сonductive Mesh and Silver Micro Caps, in One Technological Cycle for Efficient EMI Shielding Materials for 5G Communications

Voronin,

Fadeev,

Ivanchenko

et al. 2023

Preprint

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For the first time, an environmentally friendly waste-free closed cycle for the formation of EMI shielding materials that are promising for 5G communications is considered. Based on the proposed closed technological cycle, two types of EMI shielding materials have been obtained; both materials have significant prospects for signal shielding in all ranges that are allocated in different countries for 5G communication. The first type of materials are transparent conductive meshes with a transparency of more than 80% and with a shielding efficiency of more than 40 dB in the S and L bands and about 30 dB in the K and Ka bands. The study of signal reflection characteristics in the S, L, C, K and Ka bands showed the promise of using these materials as transparent 5G signal reflectors. The reflection coefficient in all considered ranges is above 90% (-0.5 dB). The second type of shielding material are continuous silver micro caps films characterized by a shielding efficiency of 90.1 dB at a thickness of 6.2±1.2 µm. We have also shown that silver micro caps can separate into silver flakes and ribbons when sonicated. These materials can also be used to produce EMI shielding coatings and composites. A detailed analysis of the shielding properties showed that each type of materials obtained in a closed technological cycle is comparable with the best literature results and significantly wins in terms of cost.

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