振动对射频连接器微动磨损损伤的影响:直流接触电阻和相位噪声响应

R. Enquebecq, S. Fouvry, E. Rubiola, M. Collet, L. Petit, J. Legrand, L. Boillot
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引用次数: 6

摘要

在许多应用中,射频连接器受到严重的环境振动。振动引起微位移,导致接触部位微动磨损损伤。本研究的目的是研究微动磨损对微波信号的影响,更确切地说是对加性相位噪声的影响[1,2]。研制了一种结合直流和微波测量的专用振动试验装置。它由激振器、矢量网络分析仪、相位噪声分析仪(采用互相关技术)和接触电阻测量系统组成。研究了微动磨损对相位噪声的影响。确定了两个贡献:相对微动位移幅值,通过波动总传输距离,在特定微动频率处诱导相位噪声与微动位移成正比;同时,由于界面中氧化屑的产生,总滑移微动磨损破坏了直流接触电阻和微波信号的传输。该研究建立了直流演变、传输损耗和相位噪声参数之间的定量相关性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of fretting wear damage in RF connectors subjected to vibration: DC contact resistance and phase-noise response
In many applications, RF connectors are subjected to severe environmental vibration. Vibration induces micro-displacements, leading to fretting wear damage in the contact. The purpose of this study is to investigate the effect of fretting wear on the microwave signal and more precisely on the additive phase noise [1, 2]. A dedicated vibration test was developed, combining DC and microwave measurement. It consisted of a shaker, a vector network analyzer, a phase-noise analyzer using a cross-correlation technique, and a system for measuring electrical contact resistance. Degradation of phase noise by fretting wear was demonstrated. Two contributions were identified: relative fretting displacement amplitude, by fluctuating the total transmission distance, induced phase noise at the specific fretting frequency proportional to the fretting displacement; also, by inducing oxide debris in the interface, gross slip fretting wear damage decayed DC electrical contact resistance and microwave signal transmission. The study established quantitative correlations between the evolution of DC, transmission loss and phase-noise parameters.
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