Measurement of Electromagnetic Pulses Generated by Electrostatic Discharge and Elucidation of the Generation Mechanism

静电放电产生的电磁脉冲的测量及其产生机制的阐明

基本信息

批准号：
07455170
负责人：
IWASAKI Takashi
金额：
$ 4.86万
依托单位：
The University of Electro-Communications
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

项目摘要

It has been proposed that the electric and magnetic fields radiated from an electrostatic discharge may consist of two kind of radiation. One is the radiation from the small dipole of the electrode gap in a moment of the discharge (initial discharge current). Another radiation is of the shorted path current in the electrode flowing after the discharge (short-path current). The new radiaton model is named the two-source ESD model. These currents were evaluated from the measured electric and magnetic fields. As a result, the initial current is impulsive with fast resetime. The evaluated short path current agrees with directly measured one in waveshape and in magnetude. These resultsshow that the proposed two-source ESD model is appropriate.The output voltages of terminals in a two-conductor transmission lineinduced by the ESD field were calculated using the two-source model. They were actually measured, and the calculated results were compared with the measuement ones in order to certify the proposed model. The two results agree in the order of measurement error. This result also shows the effectiveness of the model.The measurement method of complex antenna factor (CAF) which is developed for the waveform reconstruction of the transient electromagnetic fields was applied to determine EMI antenna factor. Using the developed near-field 3-antenna method, the antenna factor of a log-periodic dipole array antenna was measured accurately.In future work, the electromagnetic fields generated by ESD event of two electrodes approaching each other should be studied, because of the practical situation.

已经提出，从静电放电辐射的电场和磁场可能包括两种辐射。一个是放电的时刻（初始放电电流）中电极间隙的小偶极子的辐射。另一个辐射是放电后流动的电极（短路径电流）的短路径电流。新的Radiaton模型被命名为两源ESD模型。从测得的电场和磁场评估了这些电流。结果，初始电流是冲动的，随着快速的重新创作。评估的短路径电流与直接测量一个在waveshape和Magnetude中的测量。这些结果表明，提出的两种源ESD模型是合适的。使用两源模型计算了由ESD场诱导的两组传输线路中端子的输出电压。实际上测量了它们，并将计算结果与测量结果进行了比较，以证明所提出的模型。这两个结果按测量误差顺序一致。该结果还显示了模型的有效性。为瞬态电磁场的波形重建而开发的复合天线因子（CAF）的测量方法应用于确定EMI天线因子。使用开发的近场3-antenna方法，准确测量了对数周期性偶极阵列天线的天线因子。在将来的工作中，由于实际情况，应研究由两个电极接近的ESD事件产生的电磁场，因为实际情况。