Fogli di alluminio per proteggerci dal 5G

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Electromagnetic interference (EMI) shielding effectiveness of pure aluminum: an experimental assessment for 5G (Sub-6GHZ)

Sorgucu, U. Electromagnetic interference (EMI) shielding effectiveness (SE) of pure aluminum: an experimental assessment for 5G (SUB 6GHZ). J Mater Sci: Mater Electron 34, 2325 (2023). doi: 10.1007/s10854-023-11686-y.

Abstract

This article investigates the feasibility of using pure aluminium for electromagnetic shielding in the 5G frequency region. With the growing proliferation of 5G wireless technologies, concerns over the potential health effects of electromagnetic interference have emerged, and effective shielding solutions are needed. The study examines the shielding effectiveness of pure aluminium at various thicknesses and frequencies, using experimental measurement method. The results indicate that pure aluminium is an effective shielding material in the 5G frequency range, with shielding effectiveness increasing with thickness. As known, aluminium is a cost-effective, easily available and applicable material which can be used alternatively to other shielding materials. In addition to its physical and commercial properties, aluminum has been used as a shielding material in the literature for many frequency regions due to its shielding properties. Electromagnetic shielding efficiencies of aluminium sheets designed in different ways have been measured in this study. The paper concludes that pure aluminium can be a viable solution for electromagnetic shielding in 5G applications. The study highlights the importance of considering shielding effectiveness when designing and implementing 5G systems, and underscores the potential of pure aluminium as a shielding material.

Conclusion

The SE of aluminium has been evaluated for a frequency range where 5G (sub 6 GHz) applications will be implemented. In this respect, it is considered a serious contribution to the literature. The SE of aluminium has been analysed for a wide spectrum from 3.3 to 6 GHz. In addition, the effect of thickness of the aluminium sheets was also investigated as part of this study. For this purpose, single-layer, double-layer and triple-layer aluminium sheets were formed and measured. The experimental results obtained within the scope of this paper show that;

• Aluminium shows an SE in the range of 45–90 dB for the 5G range.

• The shielding performance of aluminium decreases with increasing frequency.

• As the thickness of the aluminium sheet increases, the shielding performance increases.

• The SE of aluminium is particularly effective in the 4.5 and 5.1 GHz frequency ranges.

• Considering the physical advantages of aluminium, it can be used in 5G applications to be carried out in these regions.

• The absorption characteristic of aluminium is more dominant than the reflection characteristic in the 5G frequency range below 6 GHz. The average absorption is between 20 and 60 dB, while the reflection characteristic is between 10 and 20 dB.

The EMC characteristics of different metals and their layered forms will be the subject of future studies at the 5G frequency range.

https://doi.org/10.1007/s10854-023-11686-y