摘要
针对电气产品中的屏蔽问题,使用时域有限积分算法,对电气电子产品的机箱外壳开孔问题作了电磁场仿真,适用于辐射电磁干扰典型的频段30 MHz^1 GHz,计算并比较其屏蔽效能.仿真计算的结果表明,在相同面积、不同形状的开孔情况下,电场屏蔽效能和磁场屏蔽效能的特性,为设计电磁兼容屏蔽提供了帮助.
Apertures in a enclosure of electronic equipment are main channels of radio disturbance radiated. Based on FIT, this paper simulates electromagnetic field for Shielding Efficiency, applied on typical radiated emission frequency(30 MHz ~ 1 GHz) ,their shilding efficiencies are computed and compared. The simulation results show that SE for E-field and H-Field are different under the same area and different shapes. It is helpful for engineers who are designing EMC shields.
出处
《南京师范大学学报(工程技术版)》
CAS
2014年第1期7-11,共5页
Journal of Nanjing Normal University(Engineering and Technology Edition)
基金
江苏省自然科学基金(BK2011789)
毫米波国家重点实验室开放基金(K201309)
江苏省科技厅产学研联合创新资金--前瞻性联合研究基金(BY2012004)
2013年度南京师范大学校级"大学生创新训练项目"(PCB辐射电磁干扰噪声诊断与抑制方法研究)