Radiation reduction capabilities of some woven fabrics with metallic yarns attached to mobile phones emitting in 2G- and 3G- communication standards

Apreutesei, Alina-Lacramioara; Curteza, Antonela; Paljanos, Annamaria; Miclăuș, Simona; Bechet, Paul; Mihai, George; Aron, Angel Marian; Baltag, Octavian

doi:10.1109/icepe.2016.7781368

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…A number of standardized techniques and procedures are presently used to quantify the SE of materials, either in near field or in far field conditions of shield positioning nearby the emitting antenna [35][36][37][38][39][40]. Non-standard methods of measurement are also used mainly when comparisons with well-characterized materials is available or for some specific needs of the shield [41][42][43][44][45]. In this paper, a non-standardized procedure was applied for the SE measurement using near field probes [46].…”

Section: Materials Measurement System and Proceduresmentioning

confidence: 99%

Pre-compliance testing of the shielding effectiveness of 3D printed multiwall carbon nanotube/ethylene-vinyl acetate copolymer composites in the 1 – 7 GHz range

Deaconescu

Vatamanu

Miclăuș

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Copolymer composites with 1-, 3- and 5 % weight concentration of carbon nanotubes (CNT) with average diameters of 9.5mm were fabricated using three different printing orientations: 0°, alternative ± 45°, and alternative +0°/- 90°. Shielding effectiveness (SE) of samples of 100x100x1 mm was measured with near-field probes connected to a vector network analyser based on a pre-compliance procedure. Both electric- and magnetic-shielding properties could be investigated. Using a reference material of a recognised producer, we emphasized comparative shielding properties in the (1-7) GHz range. Low SE values were generally observed for all samples, not exceeding 12.5 dB, but they were dependent on both the printing direction and CNT wt%. The measurements indicate that frequencies larger than 7 GHz may show better shielding properties. Also, indications of the best combination between CNT concentration and printing direction were deducted.

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Section: Materials Measurement System and Proceduresmentioning

confidence: 99%

Pre-compliance testing of the shielding effectiveness of 3D printed multiwall carbon nanotube/ethylene-vinyl acetate copolymer composites in the 1 – 7 GHz range

Deaconescu

Vatamanu

Miclăuș

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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“…presents a synthesis of the results for Bekinox knitted structures. Regarding the CEM standards, manufacturers have used both national and international standards[9][10][11][12].…”

mentioning

confidence: 99%

Experimental Research on Textile and Non-Textile Materials with Applications to Ensure Electromagnetic and Bio-Electromagnetic Compatibility

Baltag

Apreutesei

Rosu

et al. 2019

International Conference KNOWLEDGE-BASED ORGANIZATION

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The paper presents a synthesis of the research performed on the electromagnetic properties and characterization of textile and non-textile materials with applications in shielding and protection from the electromagnetic field. The composite structures of functional textiles intended for protective clothing or general applications for electromagnetic immunity are presented and characterized. There are analyzed composite textiles with amorphous, ferrous or non-ferromagnetic metallic threads manufactured by means of woven and knitting classical technologies as well as materials using non-metallic, electrically conductive powders. The properties of the plain jersey, rib jersey, full and half cardigan fabric, Milano rib, are presented, too. Besides textiles, there are also characterized some composite and non-composite structures using metallic yarns and carbon powder. Another direction of interest relates to the use of textile materials with amorphous metal structure with the scope of achieving a more efficient protection to the electromagnetic fields used in cellular systems and Wi-Fi networks. In addition, a comparative analysis of the methods of characterization of composite structures is made.

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Radiation reduction capabilities of some woven fabrics with metallic yarns attached to mobile phones emitting in 2G- and 3G- communication standards

Cited by 2 publications

References 11 publications

Pre-compliance testing of the shielding effectiveness of 3D printed multiwall carbon nanotube/ethylene-vinyl acetate copolymer composites in the 1 – 7 GHz range

Pre-compliance testing of the shielding effectiveness of 3D printed multiwall carbon nanotube/ethylene-vinyl acetate copolymer composites in the 1 – 7 GHz range

Experimental Research on Textile and Non-Textile Materials with Applications to Ensure Electromagnetic and Bio-Electromagnetic Compatibility

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