基于接触非线性的无源互调抑制技术研究进展

Research progress of suppression technology of Passive Intermodulation based on contact nonlinearity

摘要:

无线通信系统日益朝着高功率、高灵敏度的方向发展，无源互调(PIM)对信号传输的干扰问题是通信系统发展中亟需攻克的难题之一。据此，本文综述了无源互调产生的机理，并从降低接触面粗糙度、应用涂层材料和优化器件结构3个方面重点总结了无源互调抑制技术的研究进展，同时对不同抑制技术的优缺点进行了分析，最后对无源互调抑制技术的发展趋势进行了展望，以期为相关研究者提供借鉴和指导。

Abstract:

Wireless communication systems are increasingly developing towards high power and high sensitivity. The interference of Passive Intermodulation(PIM) on signal transmission is one of the difficult problems to be solved in the development of communication systems. Based on this, the mechanism of passive intermodulation is summarized in this paper. The research progress of passive intermodulation suppression technology from three aspects, such as reducing contact surface roughness, applying coating materials and optimizing device structure, are mainly reviewed. Moreover, the advantages and disadvantages of different suppression technologies are analyzed. Finally, the development trends of passive intermodulation suppression technology are prospected. This work aims to provide reference and guidance for relevant researchers.