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Degradation of Shielding Performance of Metallic Sheet due to Aperture Configuration and Dimension at 2.4 GHz

  Adik Susilo Wardoyo (1*), Mudrik Alaydrus (2)

(1) Politeknik Gajah Tunggal - Indonesia orcid
(2) Universitas Mercu Buana Jakarta - Indonesia - [ https://mudrikalaydrus.wordpress.com/ ] orcid
(*) Corresponding Author

Received: January 19, 2018; Revised: February 28, 2018
Accepted: April 02, 2018; Published: August 31, 2018


How to cite (IEEE): A. S. Wardoyo,  and M. Alaydrus, "Degradation of Shielding Performance of Metallic Sheet due to Aperture Configuration and Dimension at 2.4 GHz," Jurnal Elektronika dan Telekomunikasi, vol. 18, no. 1, pp. 9-14, Aug. 2018. doi: 10.14203/jet.v18.9-14

Abstract

The increasing demand on wireless connectivity has opened new and modern communication systems. Many wireless systems, for example Wireless Fidelity (Wi-Fi), Bluetooth, ZigBee, share the unlicensed frequency region around 2.4 GHz. Due to intensive application of Wi-Fi systems, there are certain disturbance potentials observed. The Wi-Fi signals cause interference to ZigBee networks which are used for smart grid applications. In this work, the shielding effectiveness of a metallic enclosure with several apertures is studied. Based on analytical expression from the literature, the shielding effectiveness by varying the sheet thickness, number of apertures, and aperture patterns is calculated. Several measurements of Received Signal Strength Indicator (RSSI) are carried out. The measurements are conducted on a shielded room to isolate the measurement from other unknown signal sources. The calculation and measurement of shielding effectiveness confirmed that more apertures on a shielding sheet will reduce the Shielding Effectiveness (SE). SE for one aperture for the case sheet thickness 0.7 mm and diameter of 12 mm reduce from 46.28 dB to 14.24 dB for 6 apertures. Bigger aperture diameters will also degrade the SE from 46.28 dB to 5.27 dB for aperture diameter 24 mm. The same condition can be concluded for the thickness 1.4 mm for aperture diameter of 12 mm. However a slightly different measurement results are obtained for the thickness 1.4 mm and aperture diameter of 24 mm. The thickness plays a significant role to attenuate the wave, so that SE is bigger than the calculated one.


  http://dx.doi.org/10.14203/jet.v18.9-14

Keywords


Electromagnetic shielding; shielding effectiveness; stainless steel; shielded box method

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References


A.A. Zavala, Indoor Wireless Communications, Wiley, 2017.

P.Yi, A. Iwayemi, and C. Zhou, ”Developing ZigBee deployment guideline under WiFi interference for smart grid applications”, IEEE Transaction on Smart Grid, vol. 2, no. 1, pp. 110-120, March 2011. Crossref

K. Heurtefeux and F. Valois, “Is RSSI a good choice for localization in wireless sensor network?”, in Proc. 2012 26th IEEE International Conference on Advanced Information Networking and Applications, 2012, p. 732 – 739. Crossref

D. Micheli, A. Delfini, F. Santoni, F. Volpini M. Marchetti, “Measurement of electromagnetic field attenuation by building wall in the mobile phone and satellite navigation”, IEEE Antennas and Wireless Propagation Letters, vol. 14, 698-702 Dec 2014. Crossref

M. Pavlik, I. Kulcunova, and D. Medved, “Measuring of the shielding effectiveness of electromagnetic field of brick wall in the frequency range from 1 GHz to 9 Ghz”, in Proccedings of the 2014 15th International Scientific Conference of Electric Power Engineering (EPE), May 2014. Crossref

N. C. Das, D. Khastgir, T. K. Chaki, A. Chakraborty.” Electromagnetic Interference Shielding Effectiveness of Carbon Black and Carbon Fiber Filler EVA and NR Based Composites”, Elsevier Composites: Part A 31 , vol. 10, pp. 1069-1081, Oct 2000. Crossref

M. P. Robinson, T. M. Benson, C. Christopoulos, J. F. Dawson, M.D. Ganley, A. C. Marvin, S. J. Porter, D. W. P. Thomas. “Analytical formulation for the shielding effectiveness of enclosure with apertures”, IEEE Transactions on Electromagnetic Compatibility, vol. 40, no. 33, pp 240-248, Aug. 1998. Crossref

S. Geetha, k. K. S. Kumar, C.,R., K. Rao, M. Vijayan, D. C. Trivedi “EMI shielding: methods and material-A review”, Journal of Applied Polymer Science, Wiley Interscience, 2009. Crossref

P. Dehkhoda, A. Tavakoli, R. Moini, “An efficient and reliable shielding effectiveness of rectangular enclosure with numerous apertures”, IEEE Transactions on Electromagnetic Compatibility, vol. 50, no. 1, pp. 208- 212, Feb 2008. Crossref

N. J. L. Violette, D. R. J. White, M. F. Violette, Electromagnetic Compatibility, Springer Science- Business Media, LLC, New York, 1987.

C. C. Wang, C. Q. Zhu, X. Zhou, Z. F. Gu, “Calculation and analysis of shielding effectiveness of the rectangular enclosure with apertures”, ACES Journal ,vol. 28, no. 6, pp. 535-545, Jun 2013.

S. Dan, Y. Shen, Y. Gao, “3 High order mode transmission line model of enclosure with off-center aperture”, in International Symposium on Electromagnetic Compatibility EMC 2007. Crossref

“304/304L Stainless Steel Product Data Bulletin”. Revision 04.25.13 Ak Steel Corporation , West Chester, Ohio, USA.

Umran Ugur, “Resistivity of Steel”. [Online]. Available : https://hypertextbook.com/ facts/2006/UmranUgur.shtml

University of Hamburg HF-Radar home page “Power vs Voltage.” [Online]. Available : http://wera.cen.uni-hamburg.de/DBM.shtml

M. Alaydrus, Transmission Lines in Telecommunication, Graha Ilmu Press, Yogyakarta, 2009.


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