Study the Effect of Different Parameters and Improving the Shielding Effectiveness of a Metallic Enclosure with Extra Wall
American Journal of Electrical and Computer Engineering
Volume 3, Issue 2, December 2019, Pages: 53-57
Received: Apr. 21, 2019;
Accepted: Jul. 23, 2019;
Published: Aug. 14, 2019
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Sedigheh Vaezikakhki, Faculty of Engineering, Islamic Azad University, Mashhad, Iran
Seyed Saeid Mosavinejad, Faculty of Engineering, Islamic Azad University, Mashhad, Iran
Mehdi Bahadorzadeh, Faculty of Engineering, Islamic Azad University, Mashhad, Iran
This paper propose a new method for improving shielding effectiveness (SE) of a rectangular enclosure with multiple circular apertures. In this method in order to compensate the effects of the apertures on (SE) parameter, we use two metallic walls each containing apertures instead of the one wall. By using two walls for shielding an enclosure, the shielding effectiveness of the enclosure will improve. The numerical simulation uses a symmetric condensed node of TLM – TD (Transmission line Modeling Method – Time Domain) and subsequent Fourier Transform and the result was verified by HFSS and CST software. We obtain the shielding effectiveness response to an electric field impulsive excitation. It is shown that field polarization and enclosure direction has a noticeable effect on SE that should be considered in SE calculations. The effect of different parameters and improving the shielding effectiveness of a metallic enclosure with extra wall is studied. An optimization of the influence of the place of apertures in the walls and the diameter of circles on two walls is presented.
Seyed Saeid Mosavinejad,
Study the Effect of Different Parameters and Improving the Shielding Effectiveness of a Metallic Enclosure with Extra Wall, American Journal of Electrical and Computer Engineering.
Vol. 3, No. 2,
2019, pp. 53-57.
G. Cerri, R. D. Leo, V. M. Primiani, and M. Righetti, “Field penetration into metallic enclosures through slots excited by ESD,” IEEE Trans. Electromagnetic Compatibility, Vol. EMC-36, No. 2, pp. 110-1 16, May. 1999.
G. Cerri, R. D. Leo and V. M. Primiani, “Theoretical and experimental evaluation of the electromagnetic radiation from apertures in shielded enclosures,” IEEE Trans Electromagnetic Compatibility., Vol. EMC-34, No. 4, pp. 423-432, November 1992.
M. Edrisi and W. K. Chan, “EMC methodology for numerical electric field computation inside enclosure with aperture,” Electronics Letters, Vol. 35, pp. 1233- 1235, 1999.
A. R Attari, K. Barkeshli, “Application of the Transmission Line Matrix Method to the Calculation of the Shielding Effectiveness for Metallic Enclosures,” Palais des congrès Acropolis, France, November12-14, 2002.
M. Bahadorzadeh, M. Naser. Moghaddasi, “Improving the shielding effectiveness of a rectangular metallic enclosure with aperture by using extra shielding wall,” IEEE Trans. Montreal, QC, July 2006.
J. L. SiIveiraP, S. Benhassine', L. Pichon' and A. Raizer, ” Analysis of the shielding effectiveness of a rectangular enclosure with apertures by TLM-TD,” Fourth International Conference on Computation in Electromagnetics (CEM 2002), 8-11 APRIL 2002, BOURNEMOUTH, UK.
M. Bahadorzadeh, A. A. Lotfi-Neyestanak "A novel and efficient technique for improving shielding effectiveness of a rectangular enclosure using optimized aperture load Authors" Journal Elektronika ir Elektrotechnika, Volume 18, Issue 10, Pages 89-92.
A. Shourvarzi, and M. Joodaki, “A network of ports to estimate shielding effectiveness of an enclosure with apertures,” in Proc. Electromagn. Compat. Eur., 2016, pp. 626–630.
A. Shourvarzi, and M. Joodaki, “Using Aperture Impedance for Shielding Effectiveness Estimation of a Metallic Enclosure with Multiple Apertures on Different Walls Considering Higher Order Modes,” IEEE Trans. Electromagnetic Compatibility, vol. PP, issue: 99, 2017.
A. Shourvarzi, and M. Joodaki, “Shielding effectiveness estimation of an enclosure with an arbitrary shape aperture”, EMC Europe 2017.
Nie, B. L. and P. A. Du, “An efficient and reliable circuit model for the shielding effectiveness prediction of an enclosure with an aperture,” IEEE Transactions on Electromagnetic Compatibility, Vol. 57, No. 3, 357–364, 2015.
Yin, M. C. and P. A. Du, “An improved circuit model for the prediction of the shielding effectiveness and resonances of an enclosure with apertures,” IEEE Transactions on Electromagnetic Compatibility, Vol. 58, No. 2, 448–456, 2016.
Dehkhoda, P., A. Tavakoli, and M. Azadifar, “Shielding effectiveness of an enclosure with finite wall thickness and perforated opposing walls at oblique incidence and arbitrary polarization by GMMoM,” IEEE Transactions on Electromagnetic Compatibility, Vol. 54, No. 4, 792–805, 2012.
S. Celozzi, R. Araneo, G. Lovat, Electromagnetic shielding, Hoboken, New Jersey: Wiley & Sons, pp. 42-46, 2008.
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 enclosures with apertures", IEEE Trans. Electromagn. Compat., vol. 40, no. 3, pp. 240-248, Aug. 1998.