A Composite Exponential Model to Characterize Nonlinearity Causing Passive Intermodulation Interference

被引：7
|
作者：
Zhang, Lei [1 ]
Wang, Hongguang [1 ]
Shen, Jialin [2 ]
Wei, Huan [3 ]
Wang, Xinbo [3 ]
Li, Yongdong [1 ]
Liu, Chunliang [1 ]
机构：
[1] Xi An Jiao Tong Univ, Dept Elect Sci & Technol, Minist Educ, Key Lab Phys Elect & Devices, Xian 710049, Shaanxi, Peoples R China
[2] Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Shaanxi, Peoples R China
[3] Sci & Technol Space Microwave Lab, Xian 710100, Shaanxi, Peoples R China
来源：
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY | 2019年 / 61卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Composite exponential model; microwave filter; nonlinearity; passive intermodulation (PIM); sensitivity analysis;
D O I：
10.1109/TEMC.2018.2822772
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Passive intermodulation (PIM) interference that occurs in communication systems could limit the communication capacity and increase the manufacturing and maintenance costs. In this letter, a composite exponential model is developed to characterize the weak nonlinearity of passive components that causes PIM generation accurately. This proposed model fully considers the correlation between the PIM products on each order and the relation of PIM products with variation of carrier powers. For verification, a microwave filter is given to demonstrate the effectiveness of this composite model, and the reliability of this model is proved by the sensitivity analysis due to measurement uncertainty. Besides, the good agreement between the calculated powers of PIM products and the measured data shows that it can provide a theoretical guidance for PIM performance assessment in engineering application, thereby evaluating the influence of PIM interference on communication quality effectively.
引用
收藏
页码：590 / 594
页数：5
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