A Fast Circuit Model Description of the Shielding Effectiveness of a Box With Imperfect Gaskets or Apertures Covered by Thin Resistive Sheet Coatings

Konefal, T.; Dawson, J.F.; Marvin, A.C.; Robinson, M.P.; Porter, S.J.

doi:10.1109/temc.2006.870703

Cited by 29 publications

(13 citation statements)

References 25 publications

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“…As depicted in Fig. 1, the SC convergence is high since the mean and standard deviation curves almost overlap for orders n = 4 and n = 6 over the whole bandwidth [2,2000] MHz. The dispersion around SE is obtained from SE ±σ SE and brings information about the stochastic model sensitivity.…”

Section: B Numerical Resultsmentioning

confidence: 92%

“…Although many deterministic tools are available (experimental, numerical and/or analytical ones), mostly only the mean parameters are given which adresses the problem of random variations. In this context, the prediction of the shielding effectiveness (SE) of a rectangular cabinet lead to various achievements with intermediate level circuit models (ILCM) enriched by different works [1], [2]. From these models, the computation of Monte Carlo (MC) simulations is quite comfortable since it is straightforward to compute highorders statistical moments [3].…”

Section: Introduction and Aimsmentioning

confidence: 99%

See 1 more Smart Citation

Shielding effectiveness statistics from random stochastic enclosures with apertures

Lalléchère

Jannet

Dupuy

et al. 2013

CEM'13 Computational Electromagnetics International Workshop

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Section: B Numerical Resultsmentioning

confidence: 92%

Section: Introduction and Aimsmentioning

confidence: 99%

Shielding effectiveness statistics from random stochastic enclosures with apertures

Lalléchère

Jannet

Dupuy

et al. 2013

CEM'13 Computational Electromagnetics International Workshop

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“…Sometimes, they are employed to close unnecessary apertures to decrease the electromagnetic leakage from them, and improve the SE of the enclosures [12]. Konefal et al [13] have implemented the intermediate level circuit model to calculate the SE of a metallic rectangular enclosure with an aperture covered by a conductive sheet against a normally incident plane wave. However, this model is restricted to the rectangular aperture and plane wave of a normal incidence; therefore, it will become more complicated and time-consuming, and even fail in other cases.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Model for Electromagnetic Leakage From an Apetured Complex Metallic Enclosures

Gong¹,

Hao²,

Jiang³

et al. 2017

PIER B

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Abstract-An efficient and accurate hybrid model has been developed for the electromagnetic leakage from two apertured cascaded metallic rectangular enclosures connected by a metallic plate with an aperture covered by a non-magnetic conductive sheet excited by an electric dipole located in the enclosure. The leakage fields through the covered aperture are derived by using the dyadic Green's function and employing the approximate boundary conditions at both sides of the sheet which is regarded as an infinite conductive plate. Then, the leakage fields into the external space through the aperture regardless of its thickness at the end of the enclosure are derived based on a generalization of the method of moments (MoM). Finally, the shielding effectiveness (SE) at the target points outside the enclosure is calculated for the intermediate analysis of the leakage fields. Comparison with the full wave simulation software CST has verified the model over a wide frequency band. The hybrid model then is employed to analyze the effect of different factors including the thickness and the conductivity of the conductive sheet on the SE, and the corresponding physical mechanisms of the leakage fields are also illuminated. The hybrid model can also be extended to deal with other cases, including the whole plate made of non-magnetic conductive material without apertures, the infinite thickness of the aperture at the end of the enclosure, and the aperture at the end of the enclosure also covered by a non-magnetic conductive sheet.

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“…Main computation methods are analytic calculation [35], transmission line method [36], finite difference time domain [37], moment method [38], and transmission line matrix [39]. However, the initial condition and boundary condition setting of above methods are not suitable for the SE computation of the EMI shielding fabric.…”

Section: Introductionmentioning

confidence: 99%

Virtual metal model for fast computation of shielding effectiveness of blended electromagnetic interference shielding fabric

Wang

Liu

Zhang

2014

International Journal of Applied Electromagnetics and Mechanics

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Blended electromagnetic interference (EMI) shielding fabric has an important application in the EMI shielding fields, but its shielding effectiveness (SE) computation remained unsolved. This study proposes a fast computation method which builds a virtual metal model according to fabric structure parameters to calculate the SE of the EMI shielding fabric. The above analysis involves the calculation of metal fiber content per unit volume of the EMI shielding fabric according to the structure of the fabric, followed by construction of a virtual metal model and computation of its thickness. Then a relation between the SE of the EMI shielding fabric and the SE of the virtual metal model is explored. A conversion coefficient of the SE computation of plain, twill and satin weave fabric is determined by experiments. A fast computation of the SE based on the virtual metal model is built. After a number of experiments, results show that the relative error is low and the computation is fast and is satisfied for the normal blended EMI shielding fabrics.

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A Fast Circuit Model Description of the Shielding Effectiveness of a Box With Imperfect Gaskets or Apertures Covered by Thin Resistive Sheet Coatings

Cited by 29 publications

References 25 publications

Shielding effectiveness statistics from random stochastic enclosures with apertures

Shielding effectiveness statistics from random stochastic enclosures with apertures

A Hybrid Model for Electromagnetic Leakage From an Apetured Complex Metallic Enclosures

Virtual metal model for fast computation of shielding effectiveness of blended electromagnetic interference shielding fabric

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