Aperture coupling analysis on shielding enclosure excited by lightning electromagnetic pulse

Subtitle:

Article type: Research Article

Authors: Yang, Bo | Zhang, Qi^* | Jiang, Zhidong

Affiliations: National Key Laboratory on Electromagnetic Environmental Effects and Electro-Optical Engineering, PLA University of Science and Technology, Nanjing, Jiangsu, China

Correspondence: [*] Corresponding author: Qi Zhang, National Key Laboratory on Electromagnetic Environmental Effects and Electro-Optical Engineering, PLA University of Science and Technology, Nanjing 210007, Jiangsu, China. E-mail:emczhq@163.com

Abstract: The two-step finite-difference time-domain method of solving full-wave Maxwell's equations is adopted to analyze the lightning electromagnetic pulse (LEMP) coupled to shielding enclosure with different apertures. The coupled field at different positions in the shielding room is calculated. The results suggest that the shielding enclosure can attenuate most of LEMP energy at its center even if there are some apertures on the shielding room. However, in the shielding enclosure the coupled LEMP is still rather strong near the apertures. Furthermore, both the size and direction of the slots on the shielding enclosure strongly affect the coupled field.

Keywords: Aperture coupling, lightning electromagnetic pulse, shielding enclosure, two-step finite-difference time-domain method

DOI: 10.3233/JAE-140182

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 48, no. 4, pp. 399-408, 2015