摘要:
从能量分布和测量有效性的观点出发，提出了强电磁脉冲的能量有效带宽和动态范围有效带宽的概念。针对IEC61000－4－4,MIL－STD－464,IEC61000－4－2,IEC61312－1等标准规定的核电磁脉冲(NEMP)、雷电电磁脉冲(LEMP)、静电放电电磁脉冲(ESDEMP)等强电磁脉冲，分别计算了它们的能量有效带宽和动态范围有效带宽。通过分析，得知在一定的范围内，上述强电磁脉冲上升时间的变化对两种有效带宽的影响并不明显，在此基础上，确定了它们的测量带宽。计算结果为NEMP，ESD EMP及LEMP的60 dB有效带宽分别是371，786，1 233 MHz与96 kHz；99%能量有效带宽分别是46，95，183 MHz与15 kHz；不失真测量所需的带宽分别是152，307，916 MHz和95 kHz。
Abstract:
In the paper, the bandwidths of highelectromagnetic pulses generated by high altitude nuclear explode, lightning, ESD have been investigated. In terms of the energy spectrums of the highEMP and the viewpoint of measurement validity, authors have put forward two new concepts, energy effective bandwidth and dynamic range effective bandwidth, to represent the bandwidth of the highEMP. Both of the effective bandwidths of the highEMP specified in IEC61000－4－4, MIL－STD－464, IEC61312－1 and IEC61000－4－2, have been calculated. In addition, it has been known that the rising time of above highEMP has a little impact on two kind of the effective bandwidth, and it is neglectable within a certain range. At last, the measurement bandwidths of above highEMP are given in according with t
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