超宽带脉冲电场测试技术研究

Measurement of ultra-wide-band pulsed electrical fields

电磁脉冲测试尤其是宽带脉冲电场测试己成为电子设备抗扰度试验研究的重要手段,国内外不少学者开展了这方面的研究,但是研制宽频带、大动态、高灵敏度的脉冲电场测试仪始终是该研究领域的一个难点.文章作者在国家自然科学基金资助下,对国内外研究动态进行了调查分析,综合运用相关先进技术,研制成功超宽带脉冲电场测试系统,其技术指标达到带宽为3.5Hz—1GHz,电场强度从V/m量级到MV/m量级,动态范围达到60dB,从而为脉冲电场的测试和电磁防护研究及电子设备抗扰度试验提供了强有力的手段.

The measurement of pulsed electromagnetic fields, especially wide-band pulsed fields, has become an important means for testing the anti-interference of electrical equipment. However, a pulsed field test meter with wide band, large dynamic range and high sensitivity remains a difficulty in this area. Based on studies of related domestic and overseas technologies we successfully developed an ultra-wide-band pulsed electric field test and measurement system which can cover a bandwidth from 3.5Hz to 1GHz for a field amplitude of V/m to MV/m, and a dynamic range of up to 60dB. This system should be of great use for pulsed fields measurement, electromagnetic detection and electrostatic discharge immunity tests of electronic devices.