Electromagnetic Shielding Analysis (EMS) of Hybrid Multilayered Woven Fabric at Different Transmitter Distance

  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract

    This paper mainly discusses on the effectiveness of multiple plain-woven fabric towards electromagnetic shielding (EMS). The measurement includes the effect of fabric distance from the transmitter antennas in the shielded enclosure test. The conductive fabric consists of copper cover hybrid yarns produced using hollow spindle spinning machine. The electromagnetic shielding test was performed according to IEEE-299 specification at 2000MHz. The range was selected to reflect mobile phones, wireless fidelity, Bluetooth and GPS transmission range frequencies.  Four samples of conductive fabrics were used in the work, as 0°/0°, 90°/90°, 0°/90° and 90°/0, respectively. The fabric sample with 0°/90° alignment was found to give the best electromagnetic shielding at -65.79dBM. The initial results also show that the hybrid conductive fabrics have large potential to be utilized for shielding electromagnetic radiation (EMR).



  • Keywords

    angle arrangement, conductive fabric, copper cover hybrid yarn, electromagnetic shielding fabrics, multiple-layer

  • References

      [1] Duran, D. and H. Kadoğlu, Electromagnetic shielding characterization of conductive woven fabrics produced with silver-containing yarns. Textile Research Journal, 2014. 85(10): p. 1009-1021.

      [2] Jagatheesan, K., et al., Electromagnetic shielding behaviour of conductive filler composites and conductive fabrics–A review. 2014.

      [3] Tong, S., Y.E.v. Schirnding, and T. Prapamontol, Environmental lead exposure: a public health problem of global dimensions. Bulletin of the World Health Organization, 2000. 78: p. 1068-1077.

      [4] Christ, A., et al., Age-dependent tissue-specific exposure of cell phone users. Phys Med Biol, 2010. 55(7): p. 1767-83.

      [5] Fernandez-Rodriguez, C.E., A.A.A. De Salles, and D.L. Davis, Dosimetric Simulations of Brain Absorption of Mobile Phone

      [6] Radiation–The Relationship Between psSAR and Age. IEEE Access, 2015. 3: p. 2425-2430.

      [7] Morgan, L., S. Kesari, and D. Davis, Why children absorb more microwave radiation than adults: The consequences. Journal of Microscopy and Ultrastructure, 2014. 2(4).

      [8] Aydin, D., et al., Mobile phone use and brain tumors in children and adolescents: a multicenter case-control study. J Natl Cancer Inst, 2011. 103(16): p. 1264-76.

      [9] Kucer, N. and T. Pamukcu, Self-reported symptoms associated with exposure to electromagnetic fields: a questionnaire study. Electromagn Biol Med, 2014. 33(1): p. 15-7.

      [10] Sudan, M., Cell Phone Exposures and Headaches, Hearing Loss, and Behavioral Problems in Children. 2012: University of California, Los Angeles.

      [11] Brzeziński, S., et al., Textile Multi-layer Systems for Protection Against Electromagnetic Radiation. Fibres & Textiles in Eastern Europe, 2009(2 (73)): p. 66--71.

      [12] Dasa, A., et al., Effect of various parameters on electromagnetic shielding effectiveness of textile fabrics. Indian Journal of Fibre & Textile Research, 2009. 34: p. 144-148.

      [13] Maity, S., et al., Textiles in electromagnetic radiation protection. Journal of Safety Engineering, 1926. 2(2): p. 11-19.

      [14] Aniołczyk, H., et al., Application of electrically conductive textiles as electromagnetic shields in physiotherapy. Fibres & Textiles in Eastern Europe, 2004(4 (48)): p. 47--50.

      [15] Asghar, A., et al., An alternative approach to design conductive hybrid cover yarns for efficient electromagnetic shielding fabrics. Journal of Industrial Textiles, 2017: p. 1528083717721922.

      [16] The EMF Safety Shop. 2018 [cited 2018; Available from: https://www.lessemf.com/index.html.

      [17] Electromagnetic shielding. 2018 [cited 2018; Available from: https://en.wikipedia.org/wiki/Electromagnetic_shielding.

      [18] Perumalraj, R. and B.S. Dasaradan, Electromagnetic Shielding Effectiveness of Doubled Copper-Cotton Yarn Woven Materials. FIBRES & TEXTILES in Eastern Europe, 2010. 18.

      [19] Cheng, K.B., et al., Electromagnetic Shielding Effectiveness of the Twill Copper Woven Fabrics. Journal of Reinforced Plastics and Composites, 2016. 25(7): p. 699-709.

      [20] Ortlek, H.G., T. Alpyildiz, and G. Kilic, Determination of electromagnetic shielding performance of hybrid yarn knitted fabrics with anechoic chamber method. Textile Research Journal, 2013. 83(1): p. 90-99.

      [21] Das, A., et al., Effect of various parameters on electromagnetic shielding effectiveness of textile fabrics. 2009.

      [22] Dordevic, Z., Textile fabric shielding electromagnetic radiation, and clothing made thereof. 1992, Google Patents.

      [23] Liu, Z., X.C. Wang, and Z. Zhou, Computation of shielding effectiveness for electromagnetic shielding blended fabric. 2013.

      [24] Šafářová, V., M. Tunák, and J. Militký, Prediction of hybrid woven fabric electromagnetic shielding effectiveness. Textile Research Journal, 2015. 85(7): p. 673-686.

      [25] Stoppa, M. and A. Chiolerio, Wearable electronics and smart textiles: a critical review. Sensors, 2014. 14(7): p. 11957-11992.

      [26] Polyester High Tenacity Yarn – For Industrial Application. 2017 [cited 2017 17]; Available from: http://www.thetexperts.com/fibers-yarns/yarns/high-tenacity/.

      [27] What is meaning of negative dbm in signal strength? 2016 2018 [cited 2018 17 August]; Available from: https://stackoverflow.com/questions/17874852/what-is-meaning-of-negative-dbm-in-signal-strength/31869981#.

      [28] Moyers, E. Why is almost everything negative in Wireless? 2015; Available from: https://community.cisco.com/t5/small-business-support-documents/why-is-almost-everything-negative-in-wireless/ta-p/3159743.




Article ID: 27679
DOI: 10.14419/ijet.v7i4.14.27679

Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.