摘要
无源互调(passive intermodulation,PIM)问题广泛存在于大功率微波无源部件及系统中,对卫星及地面通信系统造成严重的干扰。无源互调抑制方法是无源互调基础研究和工程应用中的重点关注领域,是解决无源互调问题的核心关键。在阐述无源互调产生机理的基础上,分别从工艺、结构、电设计及信号处理等多个方面系统地归纳总结了现有的无源互调抑制方法及国内外研究现状,讨论了各种抑制方法的优缺点,在此基础上梳理分析了后续的发展趋势。在传统的工艺结构优化设计的基础上,基于先进制造技术的一体化设计、新型非接触式无源互调抑制以及数字信号处理实现无源互调抑制,成为后续重要的新兴发展方向,将会为解决无源互调问题带来新的思路和途径。
Passive intermodulation(PIM)is widespread in high-power microwave passive components and systems,which may cause serious interference in satellite and terrestrial communication systems.The PIM suppression technology is a key research issue in both theory study and engineering applications,and is important to solving various PIM problems.On the basis of explaining the generation mechanism of PIM,the existing PIM suppression methods and research status at home and abroad are systematically and comprehensively summarized from the aspects of process,structure,electrical design and signal processing,and the advantages and disadvantages of various suppression methods are discussed.On this basis,the subsequent development trends are analyzed.Based on traditional process structure optimization design,integrated design based on advanced manufacturing technology,contactless passive intermodulation suppression and digital signal processing to achieve PIM suppression are the important future directions,which bring new ideas and methods for PIM research.
作者
王小丽
陈翔
李军
崔万照
WANG Xiaoli;CHEN Xiang;LI Jun;CUI Wanzhao(National Key Laboratory of Science and Technology on Space Microwave,China Academy of Space Technology(Xi′an),Xi′an 710100,China)
出处
《中国空间科学技术》
EI
CSCD
北大核心
2021年第2期1-9,共9页
Chinese Space Science and Technology
基金
国家自然科学基金(61901359)
空间微波重点实验室稳定支持基金项目(HTKJ2019KL504009)。
关键词
大功率
微波部件
无源互调抑制
非接触
一体化
high-power
microwave components
passive intermodulation suppression
contactless
integration
