An Efficient Method for Predicting the Shielding Effectiveness of an Apertured Enclosure with an Interior Enclosure based on Electromagnetic Topology

Authors

  • Jin-Cheng Zhou School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, 100081, China
  • Xue-Tian Wang School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, 100081, China

DOI:

https://doi.org/10.13052/2022.ACES.J.371001

Keywords:

Shielding effectiveness, aperture coupling, general Baum-Liu-Tesche equation

Abstract

A fast analytical method has been proposed for predicting the shielding effectiveness (SE) and resonances of an apertured enclosure with an interior enclosure. Under the concept of electromagnetic topology, the monitor point and the walls are treated as nodes, and the space between them is treated as tubes. The propagation relationships at tube level and reflection relationships at node level are derived as the propagation matrix. After modeling the front wall of the interior enclosure as a junction between two waveguides, an equivalent circuital model of the enclosures is derived. The front wall and the window structure in front of the adjacent space of the interior enclosure are considered as a three-port scattering matrix. Then we can use the extended BLT equations to calculate the voltage response at each node. Results from the proposed method are compared with those from the numerical method, and the results have a good agreement while it can dramatically save calculation time.

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Author Biographies

Jin-Cheng Zhou, School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, 100081, China

Jin-Cheng Zhou was born in Jiangsu, China, in 1990. He received a B.A. degree in Xi’an Technological University, China in 2008. He is currently working on his Ph.D. at the School of Information and Electronics of Beijing Institute of Technology. His research interests include radio propagation, EMC, and EM protection.

Xue-Tian Wang, School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, 100081, China

Xue-Tian Wang was born in Jiangsu, China, in 1961. He received a Ph.D. from the Department of Electronic Engineering of Beijing Institute of Technology in 2002. He has been working at Beijing Institute of Technology as a researcher since August 2001, and he has been a professor since 2003. His research interests include EMC, EM protection, and electromagnetic radiation characteristics.

References

J. Bridges, “Proposed recommended practices for the measurement of shielding effectiveness of high-performance shielding enclosures,” IEEE Trans. Electromagn. Compat, vol. EMC-10, no. 1, pp. 82-94, 1968.

S. Georgakopoulos, C. Birtcher, and C. Balanis, “HIRF penetration through apertures: FDTD versus measurements,” IEEE Trans. Electromagn. Compat, vol. 43, no. 3, pp. 282-294, 2001.

R. Araneo and G. Lovat, “Fast MoM analysis of the shielding effectiveness of rectangular enclosures with apertures, metal plates, and conducting objects,” IEEE Trans. Electromagn. Compat, vol. 51, no. 2, pp. 274-283, 2009.

B. Audone and M. Balma, “Shielding effectiveness of apertures in rectangular cavities,” IEEE Trans. Electromagn. Compat, vol. 31, no. 1, pp. 102-106, 1989.

B.-L. Nie, P.-A. Du, Y.-T. Yu, and Z. Shi, “Study of the shielding properties of enclosures with apertures at higher frequencies using the transmission-line modeling method,” IEEE Trans. Electromagn. Compat, vol. 53, no. 1, pp. 73-81, 2011.

Z. Kubík and J. Skála, “Shielding effectiveness simulation of small perforated shielding enclosures using FEM,” Energies, vol. 9, no. 3, p. 129, 2016.

M. P. Robinson, T. M. Benson, C. Christopoulos, J. F. Dawson, M. D. Ganley, A. C. Marvin, S. J. Porter, and D. W. P. Thomas, “Analytical formulation for the shielding effectiveness of enclosures with apertures,” IEEE Trans. Electromagn. Compat, vol. 40, no. 3, p. 9, 1998.

M. P. Robinson, J. D. Turner, D. W. P. Thomas, J. F. Dawson, M. D. Ganley, A. C. Marvin, S. J. Porter, T. M. Benson, and C. Christopoulos, “Shielding effectiveness of a rectangular enclosure with a rectangular aperture,” Electronics Letters, vol. 32, no. 17, pp. 1559-1560, 1996.

F. Tesche, “Topological concepts for internal EMP interaction,” IEEE Trans. Antennas. Propagat, vol. 26, no. 1, pp. 60-64, 1978.

F. M. Tesche, J. M. Keen, and C. M. Butler, “Example of the use of the BLT equation for EM field propagation and coupling calculations,” URSI Radio Science Bulletin, vol. 2005, no. 312, pp. 32-47, 2005.

F. M. Tesche, “On the analysis of a transmission line with nonlinear trerminations using the time-dependent BLT equation,” IEEE Trans. Electromagn. Compat, vol. 49, no. 2, pp. 427-433, 2007.

B.-L. Nie and P.-A. Du, “An efficient and reliable circuit model for the shielding effectiveness prediction of an enclosure with an aperture,” IEEE Trans. Electromagn. Compat, vol. 57, no. 3, pp. 357-364, 2015.

M.-C. Yin and P.-A. Du, “An improved circuit model for the prediction of the shielding effectiveness and resonances of an enclosure with apertures,” IEEE Trans. Electromagn. Compat, vol. 58, no. 2, pp. 448-456, 2016.

P. Dehkhoda, A. Tavakoli, and R. Moini, “An efficient and reliable shielding effectiveness evaluation of a rectangular enclosure with numerous apertures,” IEEE Trans. Electromagn. Compat, vol. 50, no. 1, pp. 208-212, 2008.

Y. Gong and B. Wang, “An efficient method for predicting the shielding effectiveness of an enclosure with multiple apertures,” J. Electromagn. Waves Appl, vol. 34, no. 8, pp. 1057-1072, 2020.

J. Sun, Y. Gong, and L. Jiang, “An improved model for the analysis of the shielding performance of an apertured enclosure based on EMT theory and BLT equation,” J. Electromagn. Waves Appl, vol. 36, no. 2, pp. 246-260, 2022.

Y. Kan, L.-P. Yan, X. Zhao, H.-J. Zhou, Q. Liu, and K.-M. Huang, “Electromagnetic topology based fast algorithm for shielding effectiveness estimation of multiple enclosures with apertures,” Acta Phys Sin, vol. 65, no. 3, p. 030702, 2016.

K. Gupta, R. Garg, I. Bahl, and P. Bhartia, Coplanar Lines: Coplanar Waveguide and Coplanar Strips, vol. 2, Artech House, 1996.

N. Marcuvitz, Waveguide Handbook, Institution of Electrical Engineers, 1986.

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Published

2023-03-28

How to Cite

[1]
J.-C. . Zhou and X.-T. . Wang, “An Efficient Method for Predicting the Shielding Effectiveness of an Apertured Enclosure with an Interior Enclosure based on Electromagnetic Topology”, ACES Journal, vol. 37, no. 10, pp. 1014–1020, Mar. 2023.

Issue

2022: Vol 37 Iss 10

Section

Articles

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