Prediction of EMI from two-channel differential signaling system based on imbalance difference model

Tohlu Matsushima, Tetsushi Watanabe, Yoshitaka Toyota, Ryuji Koga, Osami Wada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

In a differential transmission line, a large common-mode radiation is excited due to asymmetry. To suppress the radiation, the differential line must be designed electrically symmetric. In this paper, the imbalance difference model, which was proposed by the authors for estimation of common-mode radiation, is extended to apply the differential signaling system. The authors focus on two pairs of differential transmission lines with asymmetric property, which consists of an adjacent return plane and signal lines which are placed close to an edge of the return plane. The authors define five transmission modes; two normal modes, two primary common modes and a secondary common mode. In these transmission modes, the secondary common mode radiation is dominant, and the authors evaluate the radiation using the imbalance difference model. To reduce the common-mode radiation, placing a guard trace which has the same potential as that of the return plane, we can control the imbalance and reduce common-mode radiation even the transmission line has asymmetry. The reduction of common-mode radiation can be estimated quantitatively by calculation of the imbalance of the transmission line.

Original languageEnglish
Title of host publicationIEEE International Symposium on Electromagnetic Compatibility, EMC 2010 - Final Program
Pages413-418
Number of pages6
DOIs
Publication statusPublished - Dec 1 2010
Event2010 IEEE International Symposium on Electromagnetic Compatibility, EMC 2010 - Fort Lauderdale, FL, United States
Duration: Jul 25 2010Jul 30 2010

Publication series

NameIEEE International Symposium on Electromagnetic Compatibility
ISSN (Print)1077-4076

Other

Other2010 IEEE International Symposium on Electromagnetic Compatibility, EMC 2010
CountryUnited States
CityFort Lauderdale, FL
Period7/25/107/30/10

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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  • Cite this

    Matsushima, T., Watanabe, T., Toyota, Y., Koga, R., & Wada, O. (2010). Prediction of EMI from two-channel differential signaling system based on imbalance difference model. In IEEE International Symposium on Electromagnetic Compatibility, EMC 2010 - Final Program (pp. 413-418). [5711310] (IEEE International Symposium on Electromagnetic Compatibility). https://doi.org/10.1109/ISEMC.2010.5711310