Measurement of the coupling to shielded cables above a ground plane in a reverberation chamber
Measurement of the coupling to shielded cables above a ground plane in a reverberation chamber
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DOI：
10.1109/emceurope.2016.7739281
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发表时间：
2016-09
期刊：
影响因子：
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通讯作者：
M. Magdowski;Buddhi Ram Banjade;R. Vick
中科院分区：
文献类型：
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作者：
M. Magdowski;Buddhi Ram Banjade;R. Vick
本文讨论了多根屏蔽同轴电缆耦合统计电磁场的测量。这些线平行于混响室的壁对齐。利用矢量网络分析仪，在较宽的频率范围内测量了不同搅拌器位置下内导体与电缆屏蔽层之间的耦合电压。为便于比较，根据传输线理论计算了电缆屏蔽层上的耦合电流。根据内部电压与屏蔽电流的比值，可以计算出耦合电阻。此值可用于确定电缆屏蔽的屏蔽衰减（以分贝为单位）。
This paper discusses the measurement of the statistical electromagnetic field coupling to several shielded coaxial cables. The lines are aligned in parallel to a wall of a reverberation chamber. With a vector network analyzer, the coupled voltage between the inner conductor and the cable shield is measured for different stirrer positions over a wide frequency range. For comparison, the coupled current on the cable shield is calculated based on transmission line theory. From the ratio between the inner voltage and the shield current, a coupling resistance can be calculated. This value is useful to determine the shielding attenuation of the cable shield in decibels.