关于双层带孔缝腔体的屏蔽效能研究

基于现代生活中抗电磁干扰的重要性，给出了完善的求解双层带孔缝矩形腔体在平面电磁波照射下的屏蔽效能的建模过程.在建模中考虑了电磁波的入射角和极化角，并把电磁波作用在腔体外层孔缝上所产生的散射电压作为辐射源.把孔缝建模成不对称的共面带状线，把矩形腔体建模为一端完全开放、另一端完全封闭的矩形波导，并应用传输线理论推导出腔体内任意点的屏蔽效能.相对于以往模型而言，在建模的完整性、计算速度，以及屏蔽效能的提高上均有所改善，为工程实践提供了很好的理论参考.

Shielding effectiveness of double-deck cavity with apertures

Because of the importance of the electromagnetic interference resistance in modern life， the shielding effectiveness of double-deck rectangular cavity with apertures irradiated by plane electromagnetic wave was modeled.In the modeling process，incident angle and polarization angle of the plane electromagnetic wave were introduced，and the scattering voltage produced on the aperture was taken as the radiation source.The aperture was taken as the asymmetrical coplanar stripline while the rectangular cavity as a rectangular waveguide with one end completely open and another end completely closed.The shielding effectiveness of any point in the cavity was calculated using transmission line theory.Compared to the former models， this method improves the completeness， computation speed，and the shielding effectiveness which supplies good reference for engineering practice.