超宽带电磁脉冲辐射场测量技术研究
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摘要: 介绍了一种用于空间自由电磁脉冲测量的探测器，该探测器为阻抗渐变型TEM喇叭结构。重点介绍了探测器灵敏度的测量方法，测试结果表明，在80MHz~2.2GHz范围内，探测器灵敏度的频响起伏小于20%，相位随频率线性变化，标定误差小于12%。Abstract: A detector was developed for measuring ultra-wideband (UWB) transient electromagnetic field in the free-space .It is a small TEM horn antenna with gradually changed impedance. The major part of this paper is to describe the method of calibrating the detector’s sensitivity .Results show that in the range of 50Mhz~ 2.2Ghz, the detector’s sensitivity is with linear phase and a uniform magnitude within 20% . The error of calibrating is less than 12% .
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Key words:
- ultra-wideband /
- electromagnetic field /
- measurement /
- sensitivity /
- calibration
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