The occurrence of passive intermodulation and troubleshooting in Thailand mobile industry

Main Article Content

Aditep Chaisang
Sinchai Anantapreecha

Abstract

This paper describes the problem of the passive intermodulation (PIM) in mobile communications. We focus on the problem occured between the transmitter and antennas. The paper starts from the theory of intermodulation, mathematics concept and effect in mobile channels. The problem occured when two or more signals frequencies are transmitted at the same time in the same passive device. The non-linear behavior produced spurious signals where the frequencies were linear combinations of the frequencies of the original signals. When PIM level occurred,we measured such level and find out the methods to reduce PIM level. Finally,we got some methods in reducing PIM level to meet IEC 62037 standard.

Article Details

How to Cite
Chaisang, A., & Anantapreecha, S. (2019). The occurrence of passive intermodulation and troubleshooting in Thailand mobile industry. Interdisciplinary Research Review, 14(4), 55–60. Retrieved from https://ph02.tci-thaijo.org/index.php/jtir/article/view/221561
Section
Research Articles

References

N. Cannon, Troubleshooting passive intermodulation problems in the field, Anritsu white paper (2010).

E. K. Yin . Mathermatical problems arising from passive intermodulation interference in communications, ProQuest Dissertations and Theses (1979).

R. Hartman, Passive intermodulation (PIM) testing moves to the base station, Microwave Journal (2011) 124.

Z. Shi-quan textit{et. al.}, Analysis of passive intermodulation interference in GSM mobile communication antennas, in: IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies For Wireless Communications (2007) 1251-1254.

Z.Shi-quan, G. De-biao, The generation mechanism and analysis 0f passive intermodulation in metallic contacts, CEEM Dalian (2006) 546-549.