Radio frequency (RF) coaxial connectors are important constituents of modern communication systems. The degraded electrical contacts may adversely affect the signal transmission efficiency particularly in the case of loose connections. In this study, a distributed equivalent model of a coaxial connector with degraded receptacle and the loose connection was developed. The scattering parameters were analysed from the perspectives of both experimental testing and model simulation. The equivalent model and experimental results show good agreement. The impact of the degraded receptacle and loose connection on signal integrity was studied along with its electrical performance repeatability for different cases with respect to a degraded and loose connector. In addition, for the same degradation and loose level, the variation of contact resistance and contact capacitance was also investigated. These results are helpful for a better understanding of the intermittent failure of RF connectors. Moreover, these conclusions are also useful for diagnosing circuit faults caused by deteriorated repeatability of degraded and loose connectors.

中文翻译：

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插座劣化和连接松动对信号完整性和电气性能可重复性的影响

射频（RF）同轴连接器是现代通信系统的重要组成部分。退化的电触点可能会对信号传输效率产生不利影响，尤其是在连接松动的情况下。在这项研究中，开发了具有退化的插座和松散连接的同轴连接器的分布式等效模型。从实验测试和模型仿真的角度分析了散射参数。等效模型与实验结果吻合良好。研究了劣化的插座和松动的连接对信号完整性的影响，以及对于劣化和松动的连接器在不同情况下的电气性能可重复性。此外，对于相同的降级和松散水平，还研究了接触电阻和接触电容的变化。这些结果有助于更好地了解RF连接器的间歇性故障。此外，这些结论对于诊断由退化和松动的连接器的可重复性下降引起的电路故障也很有用。