物理
物理
물리
2000年
10期
620-622,614
,共4页
计算机%静电放电%电场%磁场
計算機%靜電放電%電場%磁場
계산궤%정전방전%전장%자장
computer%electrostatic discharge%electric fields%magnetic fields
分析了静电放电(ESD)辐射场的偶极子模型.用高采样速率数字示波器和定做的宽带电磁与磁场探头测量了计算机操作中人体静电放电产生的瞬态电场与磁场.用FFT分析了静电放电辐射场的频谱.研究了静电放电辐射场对某电路高频信号的影响.研究结果表明,即使是很低电压(2kV)的静电放电,其辐射近场的电场达几百V/m,磁场可达几十A/m.静电放电辐射场的频谱极宽,从数兆赫到数千兆赫.静电放电对高频电路的试验结果表明,若不采取有效的防护措施,人体静电放电辐射电磁场会对电路造成一定的影响,如对集成电路与元器件造成“潜在效应”的损害,对电路造成电磁干扰,甚至损坏电子器件.
分析瞭靜電放電(ESD)輻射場的偶極子模型.用高採樣速率數字示波器和定做的寬帶電磁與磁場探頭測量瞭計算機操作中人體靜電放電產生的瞬態電場與磁場.用FFT分析瞭靜電放電輻射場的頻譜.研究瞭靜電放電輻射場對某電路高頻信號的影響.研究結果錶明,即使是很低電壓(2kV)的靜電放電,其輻射近場的電場達幾百V/m,磁場可達幾十A/m.靜電放電輻射場的頻譜極寬,從數兆赫到數韆兆赫.靜電放電對高頻電路的試驗結果錶明,若不採取有效的防護措施,人體靜電放電輻射電磁場會對電路造成一定的影響,如對集成電路與元器件造成“潛在效應”的損害,對電路造成電磁榦擾,甚至損壞電子器件.
분석료정전방전(ESD)복사장적우겁자모형.용고채양속솔수자시파기화정주적관대전자여자장탐두측량료계산궤조작중인체정전방전산생적순태전장여자장.용FFT분석료정전방전복사장적빈보.연구료정전방전복사장대모전로고빈신호적영향.연구결과표명,즉사시흔저전압(2kV)적정전방전,기복사근장적전장체궤백V/m,자장가체궤십A/m.정전방전복사장적빈보겁관,종수조혁도수천조혁.정전방전대고빈전로적시험결과표명,약불채취유효적방호조시,인체정전방전복사전자장회대전로조성일정적영향,여대집성전로여원기건조성“잠재효응”적손해,대전로조성전자간우,심지손배전자기건.
The electromagnetic fields radiated by electrostatic discharge is analyzed using the bipolar model. The transient electric and magnetic fields generated by electrostatic discharge from the charged human body during the operation of computers are measured by a very high sampling rate oscilloscope and custom-made wide band electric field and magnetic field antennas. The spectrum of the fields is analyzed by FFT. The influence of the fields on high frequency signals is studied. The results show that the electric fields can be several hundred V/m and the magnetic fields can be several A/m even if the discharge voltage is very low(2kV).The spectrum of the fields is very wide ranging from several MHz to several GHz.The effects of the fields on high frequency circuits show that some influences such as “latent effects” on integrated circuits or devices, electromagnetic interference and even damage to the circuits can be caused by the electromagnetic fields generated by electrostatic discharge from the charged human body.