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Efficient analytical method for the shielding effectiveness of an apertured enclosure based on the BLT equation
IET Science, Measurement & Technology ( IF 1.4 ) Pub Date : 2020-10-13 , DOI: 10.1049/iet-smt.2019.0580
Yanfei Gong 1 , Yujie Li 1 , Luhang Jiang 2
Affiliation  

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.

中文翻译:

基于BLT方程的有孔罩屏蔽效果的高效分析方法

已经开发了一种基于Baum–Liu–Tesche(BLT)方程的有效分析方法,用于预测由外部平面波激发的带孔外壳的屏蔽效果(SE)。首先,构建等效电路和信号流图,这有助于了解机柜的能量传输。然后,通过使用广义BLT方程获得SE,并使用所提出的分析方法来分析各种参数对SE的影响。最后,扩展了分析方法以处理带有孔阵列的外壳,在相对壁处具有孔的外壳和两个级联的外壳。CST已成功地在0-3.0 GHz的宽频带上验证了这种分析方法,该方法比传统的数值方法消耗的时间更少。除了,
更新日期:2020-10-16
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