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

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原文链接

NETL
NSTL
Inst Engineering Technology-Iet

外文摘要：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.

外文关键词：

electromagnetic shieldingequivalent circuitssignal flow graphsnumerical analysisfrequency 00 GHz to 30 GHzexternal plane wave excitationenergy transmissionsignal flow graphequivalent circuitcascaded enclosuresaperture arraygeneralised BLT equationSE predictionBaum-Liu-Tesche equationapertured enclosureshielding effectivenessefficient analytical method

作者：

Gong, Yanfei、Li, Yujie、Jiang, Luhang

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作者单位：

Beijing Informat Sci & Technol Univ, Key Lab, Minist Educ Optoelect Measurement Technol & Instr, 35 Beisihuan Middle Rd, Beijing, Peoples R China

North China Elect Power Univ, Sch Elect & Elect Engn, 2 Beinong Rd, Beijing, Peoples R China

出版年：

2020

DOI：

10.1049/iet-smt.2019.0580

IET science, measurement & technology

ISSN：1751-8822

年,卷(期)：2020.14(8)

被引量2
参考文献量29