Testing technology of using bulk current injection with parallel double line as substitute for high field continuous wave electromagnetic radiation
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摘要: 由于互联系统信号传输的基础是双线，以低频线缆耦合通道中比较典型的平行双线为研究对象，针对互联系统单端为非线性受试设备的电磁辐射敏感度进行实验研究。讨论了典型互联系统辐射与注入的等效以及在高场强下的外推条件，对所选非线性器件是否满足实验要求进行了实验验证。分析了大电流注入法等效替代强场连续波电磁辐射的实验结果，并对辐照时天线极化方式不同以及有无大电流注入探头对辐射与注入等效研究的影响进行了分析。Abstract: Since the signal transmission of the interconnected system is based on two lines, this paper takes the parallel two lines as the research object, which is relatively typical in the low frequency cable coupling channel. Experiments were carried out to study the electromagnetic radiation sensitivity of the equipment whose single end of the interconnected system is non-linear. The radiation and injection equivalence of typical interconnected systems and the extrapolation conditions under high field strength are discussed. The experimental verification of whether the selected nonlinear devices meet the experimental requirements is carried out. The experimental results of using bulk current injection as equivalent substitute for strong field continuous wave electromagnetic radiation are analyzed. And the effects of different polarization modes of the antenna and the presence or absence of the large current injection probe on the equivalence research of radiation and injection are also analyzed.
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Key words:
- parallel double line /
- nonlinear /
- bulk current injection /
- equivalent substitute
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图 7 各频点对应LNA输入功率增大S21的变化
Figure 7. S21 changes with LNA input power at three frequency points
图 8 各频点对应LNA输入功率增大SWR的变化
Figure 8. SWR changes with LNA input power at three frequency points
图 9 辐射时场强与低噪声放大器响应关系
Figure 9. Relationship between the field strength and the response of the low-noise amplifier in radiation
图 10 等效注入电压与低噪声放大器响应关系
Figure 10. Relationship between the equivalent injection voltage and the response of the low-noise amplifier
图 11 场强和等效注入电压关系
Figure 11. Relationship between field strength and equivalent injection voltage
图 12 辐射和注入时低噪声放大器响应比较
Figure 12. Comparison of low-noise amplifier responses at radiation and injection
图 13 不同极化方式下场强与终端响应关系
Figure 13. Relationship between field strength and terminal response under different polarization modes
图 14 不同极化方式下等效注入电压与终端响应关系
Figure 14. Relationship between equivalent injection voltage and terminal response under different polarization modes
图 15 垂直极化方式下场强与等效注入电压的关系
Figure 15. Relationship between field strength and equivalent injection voltage in vertical polarization
图 16 有无探头时场强与低噪声放大器响应的比较
Figure 16. Comparison of the response to field strength in presence or absence of the probe of the low noise amplifier
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