Combined model for shielding effectiveness estimation of a metallic enclosure with apertures

Belkacem, F. Tahar; Bensetti, Mohamed; Boutar, Abdelghafour; Moussaoui, D.; Djennah, M.; Mazari, B.

doi:10.1049/iet-smt.2010.0040

Cited by 23 publications

(10 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In [29 ], the aperture position factor

C_{m}

only contains the mode indices

()(, m, n)

of the enclosure, because authors think that the aperture has the same field distribution with the enclosure. In fact, these two fields are not exactly the same with the increase of frequency, which will affect the accuracy of the SE at higher frequencies.…”

Section: Derivation Of the Proposed Methodsmentioning

confidence: 99%

“…where C m is an aperture position factor that accounts for the coupling between the aperture and the enclosure; k 0 = ω/c is the wavenumber of free space, where c is the speed of light, and ω = 2π f is the angular frequency; w e = w − 5t 1 + ln 4πw/t /4π. In [29], the aperture position factor C m only contains the mode indices m, n of the enclosure, because authors think that the aperture has the same field distribution with the enclosure. In fact, these two fields are not exactly the same with the increase of frequency, which will affect the accuracy of the SE at higher frequencies.…”

Section: Modelling Of the Shielding Enclosurementioning

confidence: 99%

See 1 more Smart Citation

Efficient analytical method for the shielding effectiveness of an apertured enclosure based on the BLT equation

Gong

Jiang

2020

IET sci. meas. technol.

View full text Add to dashboard Cite

An efficient analytical method based on the Baum–Liu–Tesche (BLT) equation has been developed for predicting the shielding effectiveness (SE) of an apertured enclosure excited by an external plane wave. First, the equivalent circuit and the signal flow graph are constructed, which helps understand the energy transmission of the enclosure. Then, the SE is obtained by using the generalised BLT equation, and the proposed analytical method is employed to analyse the effect of various parameters on the SE. Finally, the analytical method is extended to handle the enclosure with an aperture array, an enclosure with apertures at the opposing walls and two cascaded enclosures. The analytical method has been successfully verified by the CST over a wide frequency band of 0–3.0 GHz, which consumes less time than conventional numerical methods. Besides, whatever the condition of the enclosure or the aperture is, the analytical method can predict the SE and higher‐order modes at higher frequencies accurately.

show abstract

“…In [29 ], the aperture position factor

C_{m}

only contains the mode indices

()(, m, n)

Section: Derivation Of the Proposed Methodsmentioning

confidence: 99%

Section: Modelling Of the Shielding Enclosurementioning

confidence: 99%

Efficient analytical method for the shielding effectiveness of an apertured enclosure based on the BLT equation

Gong

Jiang

2020

IET sci. meas. technol.

View full text Add to dashboard Cite

show abstract

“…With the progress in electronic science and technology, electromagnetic interference (EMIΨ problems in electronic systems are becoming more prominent and severe as a result of the increasingly sophisticated electromagnetic (EMΨ environment [1][2][3]. EM shielding represented by a metallic enclosure has been frequently utilised to decrease emissions and protect sensitive electronic components and circuits from the EMI [4][5][6]. However, it is inevitable that a shielding enclosure has many apertures or slots for some practical use such as wires connecting, ventilation, and heat dissipation, which may reduce the shielding effectiveness (SEΨ of the enclosure and create EM coupling paths between external field and circuit components connected by the transmission line (TLΨ inside the enclosure.…”

Section: Introductionmentioning

confidence: 99%

Efficient analytical method for the coupling to penetrated transmission line in multiple enclosures based on electromagnetic topology

Gong

Hao

Jiang

2018

IET Science, Measurement & Technology

View full text Add to dashboard Cite

“…The shielding effectiveness of a enclosure with circular apertures is also discussed [5]. In [6], combined model is applied to shielding effectiveness estimation of a metallic enclosure with apertures. Most of the previous work concerns parameters of the exterior of enclosures and the incident wave, but not enclosures with inner windows yet.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Shielding Effectiveness of Enclosures With Apertures and Inner Windows With TLM

Hao¹,

Pan

Fan³

et al. 2013

PIER M

View full text Add to dashboard Cite

Derivation is presented for analysing the shielding effectiveness of an enclosure with apertures and inner windows with Transmission Line Method (TLM). Theoretical values of shielding effectiveness are in good agreement with the simulation results. Results indicate that the capacitive window lowers the resonance frequency while the inductive window enhances the resonance frequency, and both of them improve the shielding effectiveness of the enclosure. The effects of location of the inner windows is discussed. Moreover, the present method can also be used in the condition that the enclosure has both inductive and capacitive windows.

show abstract

Combined model for shielding effectiveness estimation of a metallic enclosure with apertures

Cited by 23 publications

References 7 publications

Efficient analytical method for the shielding effectiveness of an apertured enclosure based on the BLT equation

Efficient analytical method for the shielding effectiveness of an apertured enclosure based on the BLT equation

Efficient analytical method for the coupling to penetrated transmission line in multiple enclosures based on electromagnetic topology

Analysis of Shielding Effectiveness of Enclosures With Apertures and Inner Windows With TLM

Contact Info

Product

Resources

About