提高弹上设备含孔缝壳体屏蔽效能方法研究  

Research of Enhancement of Shielding Effectiveness of Device Enclosure with an Aperture on Missile

作　　者：黄晓[1] 刘东升[1] 

机构地区：[1]军械工程学院导弹工程系,石家庄050003

出　　处：《微波学报》2016年第2期15-20,共6页Journal of Microwaves

摘　　要：出于通风散热、线缆进出的考虑,弹上很多设备的壳体表面都有孔洞,严重降低了壳体的电磁屏蔽效能,是造成电磁干扰的重要原因。弹上空间有限,负重对飞行成本的提高很大,且导弹飞行过程中过载很大,因此采取提高含孔缝壳体屏蔽效能的措施需同时考虑到所占空间、增加的重量和对设备结构强度的影响三个要素。提出了一种提高含孔缝腔体电磁屏蔽效能的新方法——加装屏蔽立柱,这种方法结构简单,基本不占用屏蔽壳体内的有限空间,也不会明显增加飞行重量,而且不影响线缆进出、通风散热、结构强度和电气连续性。理论计算和实验测试结果都验证了理论的正确性。In consideration of air circulation and wires getting in and out,many device enclosures on missile have apertures on the surface,which lower shielding effectiveness and lead to electromagnetic interference. Space on missile is limited,and weight increasing enhances flight expenses,and overload in missile flight is very high,so the three factors should be taken into consideration when thinking of taking measures to heighten shielding effectiveness of enclosure with apertures. A new method of installing shielding column is put forward to enhance enclosure shielding effectiveness with apertures. The method is simple and convenient,which does not take much space and increase flight weight,and does not influence wire getting in and out,air circulation,structure strength and electric continuity. Theory calculation and experiment test results prove the accuracy of the theory in the article.

关 键 词：弹上设备 壳体 孔缝 屏蔽效能 矢量场绕射 屏蔽立柱 

分 类 号：TJ760[兵器科学与技术—武器系统与运用工程] TN03[电子电信—物理电子学]