A circuit model for predicting the shielding effectiveness of cylindrical enclosure

Chen, Kaibai; Gao, Min; Liu, Shaohua; Wang, Yi; Zhou, Xiaodong

doi:10.1088/1361-6501/ac8366

Cited by 1 publication

(1 citation statement)

References 22 publications

(32 reference statements)

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“…In recent years, considerable attention has been paid to the study of shields that take into account their internal filling [18][19][20][21]. New methods of SE measurements [22,23] and calculations [24][25][26][27] have been developed for such structures. Several methods for SE improvement using an internal filling of shields have also been proposed [28,29].…”

Section: Introductionmentioning

confidence: 99%

On Symmetry and Asymmetry in Nested Electromagnetic Shields

et al. 2023

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This work focuses on the study of shield systems consisting of nested enclosures. In the first step, using FDTD simulations and measurements in an anechoic chamber, we investigate the shielding effectiveness (SE) of the system of two nested rectangular enclosures in the frequency range of up to 3 GHz. It is shown for the first time that for a number of frequencies, the SE of the nested shields can be improved by 40–50 dB due to the asymmetric arrangement of the enclosures, their electrical connection, and the mutually perpendicular arrangement of the apertures. Next, we analyze the emissions from the electromagnetic radiation sources in the presence and absence of a nested shield system. The results show that a nested shield system may not attenuate the emission amplitude but increases it by more than 58 dB at the resonant frequencies of the enclosures. Then, we prove that a single enclosure can have a higher SE than the same enclosure as a part of a poorly designed nested shield system. The final part of the article formulates practical recommendations for the design of nested shield configurations.

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