论文部分内容阅读
为了计算有孔金属屏蔽箱体的屏蔽效能,根据Robinson算法和电磁拓扑理论,提出了一种基于BLT方程的有孔箱体屏蔽效能分析方法,推导出了屏蔽箱体、孔逢、入射波等参数与屏蔽效能的关系式,并扩展到孔阵、偏心孔以及任意极化角的情形,分析了开孔形状、孔阵的孔间距、孔阵开孔面积以及开孔数量对屏蔽效能的影响。在0~2 GHz范围,对单孔和孔阵箱体的屏蔽效能进行仿真,并与Robinson算法以及CST仿真结果进行了对比,验证了方法的有效性。数值仿真结果表明:开孔面积不变时,开孔数量越多屏蔽效能越好;开孔数量不变时,开孔面积越小屏蔽效能越好;在开孔面积以及开孔数量都不变时,孔阵的孔间距越大屏蔽效能越好。
In order to calculate the shielding effectiveness of the perforated metal shielding box, a screening method based on the BLT equation is proposed based on the Robinson algorithm and the electromagnetic topology theory. The shielding box, holes, incident waves, etc. are deduced The relationship between the parameters and the shielding effectiveness is extended to the hole array, the eccentric hole and the arbitrary polarization angle, and the influence of the hole shape, the hole spacing of the hole array, the hole area of the hole array and the number of holes on the shielding effectiveness is analyzed . In the range of 0 ~ 2 GHz, the shielding effectiveness of single-hole and perforated box is simulated. Compared with Robinson algorithm and CST simulation results, the effectiveness of the method is verified. Numerical simulation results show that: the opening area is constant, the more the number of openings, the better the shielding effectiveness; the same number of openings, the smaller the opening area, the better the shielding effectiveness; the opening area and the number of openings are the same When the hole array hole spacing greater shielding effectiveness better.