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Accurate and Fast RFI Prediction Based on Dipole Moment Sources and Reciprocity

Qiaolei Huang (PhD student, Missouri Univ of Sci& Tech)

Takashi Enomoto (EMC Engineer, Sony GM&O)

Shingo Seto (EMC Engineer, Sony GM&O)

Kenji Araki (Deputy General Manager and Principal Engineer, Sony GM&O)

Jun Fan (Professor, Missouri Univ of Sci& Tech)

Chulsoon Hwang (Assistant Professor, Missouri Univ of Sci& Tech)

Location: Ballroom D

Date: Wednesday, January 31

Time: 10:00am - 10:45am

Pass Type: 2-Day Pass, All Access Pass, Alumni All Access Pass - Get your pass now!

Track: 12. Electromagnetic Compatibility and Mitigating Interference

Audience Level: All

Format: 45-Minute Technical Session

Vault Recording: TBD

Audience Level: All

In RFI problems, it is often unknown which parameters contribute most to noise coupling from ICs to RF antennas. In this paper, a method based on dipole moment source and reciprocity is proposed to solve this problem systematically. The noise coupling is decomposed into two parts: antenna simulation part and source reconstruction part.Then by combing these two results using reciprocity theorem, noise coupling power for each dipole moment source can be obtained. Using this, RFI engineers can identify the biggest troublemaker. In addition, this method can guide IC placement to minimize RFI.


This proposed method uses a combination of the dipole moment model and the reciprocity to solve RFI problems. It can not only estimate coupled power with clear physical meanings, but also provide guidelines to find best IC locations to minimize RFI.