Finite difference delay modelling for analysis of shielding effectiveness of perforated conductive enclosure

Autor: Ali Kalantarnia, Siavash Rajabi, Abdollah Mirzabeigi
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: IET Science, Measurement & Technology, Vol 18, Iss 9, Pp 503-511 (2024)
Druh dokumentu: article
ISSN: 1751-8830
1751-8822
DOI: 10.1049/smt2.12210
Popis: Abstract This paper introduces finite difference delay modelling (FDDM) for computing the shielding effectiveness (SE) of a conductive enclosure with an aperture against electromagnetic pulses. FDDM offers optimal accuracy and stability for analysing complex structures. The time domain electric field integral equation (TD‐EFIE) for the conductive enclosure is derived by imposing boundary conditions on the perfect electrical conductor (PEC) surface in the Laplace domain. Time discretization is based on finite differences, and the Laplace‐to‐Z transform mapping is utilized. Fast Fourier Transform (FFT) is employed to expedite the FDDM solution process. Both frequency domain shielding effectiveness (FD‐SE) and time domain shielding effectiveness (TD‐SE) are evaluated using this approach. Finally, to validate the accuracy of the proposed method, results are compared with simulations using CST‐MWS software and the frequency domain moment method.
Databáze: Directory of Open Access Journals
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