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首页> 外文会议>55th IWCS/Focus~TM Conference >Measurement and Simulation of Differential Skew in Twisted Pair Cables
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Measurement and Simulation of Differential Skew in Twisted Pair Cables

机译：双绞线差分偏斜的测量与仿真

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The impact of manufacturing tolerances on unbalances in various individually screened twisted pair cables is discussed in this paper. Unbalances were grouped under categories which originate from geometrical, conductance or dielectric asymmetry of the pair. The concept of quasi-common and quasi-differential modes of propagation and modal dispersion in an unbalanced pair is discussed. It is demonstrated that the geometrical asymmetry is the least harmful for the quality of propagation on an unbalanced pair. Three different samples of cables each with low- and high-skew pairs were selected for laboratory tests. The differential skew (intra pair skew) were measured directly with a Network Analyzer and a power splitter. Measurements were also performed on the conductor-screen loop to find out the difference in primary unit parameters (inductance, resistance, capacitance) within each screened pair. Simulation and measurement results lead to similar conclusions regarding the correlation between unit parameter unbalance and intra pair skew.
机译：本文讨论了制造公差对各种单独屏蔽的双绞线电缆中不平衡的影响。不平衡被归类于源自该对的几何，电导或介电不对称的类别。讨论了非平衡对中准共模和准微分模的传播和模态色散的概念。结果表明，几何不对称对不平衡对上的传播质量危害最小。选择了三种不同的电缆样本，分别具有低和高偏斜对，以进行实验室测试。差分偏斜（内部对偏斜）直接使用网络分析仪和功率分配器进行测量。还对导体屏蔽回路进行了测量，以找出每个屏蔽对内的主要单位参数（电感，电阻，电容）的差异。仿真和测量结果得出有关单位参数不平衡与内部对偏斜之间相关性的相似结论。

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