摘要
针对线缆-机箱系统的电磁兼容性问题,提出了一种部分元等效电路法与矩量法混合的数值分析方法.利用部分元等效电路法建立线缆、电连接器和内部印刷电路板的等效高频电路模型,通过电路分析方法得到其激励特性,并基于能量守恒定理将其等效为辐射偶极子天线,最后加入矩量法分析的机箱屏效模型中,进行内部电路板信号完整性分析和机箱屏效计算.机箱内部印刷电路板信号完整性分析结果与商用软件微波仿真工作室的计算结果吻合良好,线缆机箱屏效实验测试结果与分析结果同样吻合良好,计算精度满足电磁兼容工程分析的需要,表明了文中所提方法的有效性.
For the EMC problem of a cable （with connector）-enclosure （with PCB） system, a hybrid numerical analysis method for the partial element equivalent circuit （PEEC） and the method of moment （MoM） is proposed. The PEEC is used to model the cable-connector-PCB, and the electromagnetic properties could be calculated by the circuit method. Based on energy conservation, the cable-connector is replaced by an equivalent dipole which has similar electromagnetic radiation properties. The equivalent dipole is added to the model of the enclosure Which is analyzed by the MoM. Then the shielding effectiveness of the enclosure and the signal integrity of the PCB in the enclosure can be obtained. An experiment is designed to verify the proposed hybrid method. The test results and simulated results are in good agreement. This hybrid method could be used to calculate not only the signal integrity of the cable and PCB, but also the shielding effectiveness of the cable-enclosure system.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2016年第6期147-151,157,共6页
Journal of Xidian University
基金
国家自然科学基金资助项目(51490660)
国家自然科学基金面上资助项目(51475348)
关键词
线缆机箱
电连接器
部分元等效电路法
信号完整性
屏效
cable-enclosure system
electric connector
PEEC
signal integrity
shielding effectiveness
