ESD脉冲辐射电磁场瞬态仿真与分析

现今电子电路的结构越来越复杂,大量的无源器件集成在PCB各个模块上,这些元器件极易收到来自外界的EMS干扰信号的干扰,通常情况人们将目光集中于中低频段信号通过传导耦合串扰直接进入设备,而忽略了EMS干扰的高频特性会在近场范围内通过空间磁场施加在模块上. 本文通过模拟静电放电(ESD)脉冲电磁辐射场,分析其在近场对PCB板级电路上的复杂无源模块产生的辐射干扰,并且对无源模块周围受到影响产生的场进行仿真并且得出时域上的信号强度分布.

Transient Simulation and Analysis of ElectrostaticDischarge Pulse Electromagnetic Field

The structure of electronic circuits is becoming more and more complex and a large number of passive devices which are easy to receive interference from outside the EMS interference signal are integrated in each module of PCB. In general,people focus their attentions on the low-frequency and middle-frequency signal directly into the device through the conduction coupling crosstalk,but ignore the high frequency characteristic of the EMS interference that apply to the module by the space magnetic field in the near field. In this paper,by simulating the electrostatic discharge(ESD)pulsed electromagnetic field,the radiation interference caused by the complex passive modules on the PCB board circuit in the near field is analyzed. And the field generated by the surroundings of the passive module is simulated and the signal intensity distribution in the time domain is derived.