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

• 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
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07455170/
• 关键词: Electrostatic Discharge; ESD; Transient Electromagnetic Field; Antenna Factor; EMC; EMI; Electromagnetic Measurement; Waveform Reconstruction

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.

有人提出，静电放电辐射的电场和磁场可以由两种辐射组成。一个是在放电瞬间来自电极间隙的小偶极子的辐射（初始放电电流）。另一种辐射是放电后电极中的短路电流（短路电流）。新的辐射模型被命名为双源ESD模型。这些电流是根据测量的电场和磁场进行评估的。因此，初始电流是脉冲的，具有快速的复位时间。计算得到的短路电流与实测值在波形和磁场上基本一致。计算结果表明，所提出的双源ESD模型是合理的，并利用该模型计算了双导体传输线两端在ESD场作用下的输出电压.并进行了实际测量，将计算结果与实测结果进行了比较，验证了模型的正确性。这两个结果在测量误差的顺序上是一致的。将基于瞬态电磁场波形重构的复天线因子（CAF）测量方法应用于EMI天线因子的测量。利用改进的近场三天线法，对对数周期偶极子阵列天线的天线因子进行了精确的测量，由于实际情况的需要，在以后的工作中，还需要对两电极相互靠近时ESD事件产生的电磁场进行研究。

项目成果

K.Fujii, S.Ishigami and T.Iwasaki: "Evaluation of Complex Antenna Factor of Dipole Antenna by the Near-field 3-Antenna Method with the Method of Moment" Trnas.IEICE B-II. Vol.J79-B-II,No.11. 754-763 (1996)

K.Fujii、S.Ishigami 和 T.Iwasaki：“通过近场 3 天线方法和矩量法评估偶极子天线的复杂天线系数”Trnas.IEICE B-II。

永井拓也,杉浦行,山中幸雄,岩崎俊: "対数周期ダイポールアレイアンテナによるEMI測定" 電子情報通信学会論文誌 B-II. Vol.J81-BII. (1998)

Takuy​​a Nagai、Yuki Sugiura、Yukio Yamanaka、Shun Iwasaki：“使用对数周期偶极子阵列天线进行 EMI 测量”IEICE Transactions B-II（1998 年）。

岩崎俊 他: "電磁波雑音のタイムドメイン計測技術" コロナ社, 274 (1995)

Shun Iwasaki 等人：“电磁噪声的时域测量技术” Coronasha，274 (1995)

S.Ishigami and T.Iwasaki: "Output Voltage of Transmission Line Coupled with Far-field Radiation of Small Gap Discharge" Trans.IEICE B-II. Vol.J79-B-II,No.11. 771-779 (1996)

S.Ishigami 和 T.Iwasaki：“传输线的输出电压与小间隙放电的远场辐射耦合”Trans.IEICE B-II。

T.Nagai, A.Sugiura, Y.Ymamanaka, and T.Iwasaki: "EMI Measurement Using a Log Periodic Dipole Array Antenna" Trans.IEICE-B-II. Vol.J81-B-II (in press). 8 (1998)

T.Nagai、A.Sugiura、Y.Ymamanaka 和 T.Iwasaki：“使用对数周期偶极子阵列天线进行 EMI 测量”Trans.IEICE-B-II。