Analysis and experiment on multicarrier passive intermodulation in high power component

doi:10.16708/j.cnki.1000-758X.2021.0012

Abstract

Abstract: Passive intermodulation (PIM) is an inevitable problem in communication systems and is becoming much more serious with characteristics of higher power, wider bandwidth and higher receiving sensitivity of satellite payload. The common method of double carriers for analyzing PIM has been unfit for modern communication systems with complex payload. The proposed analysis and algorithm for multicarrier is an effective way to solve multicarrier passive intermodulation interference, using nonlinear modal of PIM to forecast power level. Analysis and calculation on TNC-KK connector show that three intermodulation frequencies were generated in the receiving frequency band. Comparing the intermodulation power level calculated by the nonlinear model with that measured by the multicarrier experiment, the max error among the three intermodulation frequencies was less than 5dB. The analysis method is beneficial for multicarrier passive intermodulation of high power microwave components and can provide reference for the measurement of multicarrier passive intermodulation.

Key words: high power component, passive intermodulation, multicarrier, distribution type, , nonlinear model, power level

WEI Huan, WANG Xinbo, BAI He, CUI Wanzhao. Analysis and experiment on multicarrier passive intermodulation in high power component[J]. Chinese Space Science and Technology, 2021, 41(1): 100-105.

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URL: http://journal26.magtechjournal.com/kjkxjs/EN/10.16708/j.cnki.1000-758X.2021.0012

http://journal26.magtechjournal.com/kjkxjs/EN/Y2021/V41/I1/100

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Analysis and experiment on multicarrier passive intermodulation in high power component

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