Electromagnetic radiation resulting from strip line structure driven by a feed cable

Yoshiki Kayano, Hiroshi Inoue

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

4 Citations (Scopus)

Abstract

Printed circuit boards (PCBs) driven by a connected feed cable are considered to be one of the main sources of the electromagnetic interference (EMI) from electronic devices. Effective methods for predicting and suppressing EMI over a broad band are required. In this paper, we newly focus on identifying the frequency response of EM radiation from a strip line structure driven by a connected feed cable. To provide basic considerations for the realization of methods for predicting the EM radiation from strip line structure driven by a feed cable, the characteristics of the EMI of test model PCB are investigated in this paper experimentally and by numerical modeling. Firstly, frequency responses of common-mode (CM) current and EM radiation from a PCB without the feed cable are discussed by FDTD modeling. It was demonstrated that SL and shield structures without a feed cable are effective in suppressing the EMI. Secondly, CM current on the feed cable attached to the PCB is studied experimentally and compared with FDTD modeling. Due to the additional displacement current path, SL structure driven by the feed cable is not effective in suppressing EMI. EMC design guideline commonly suggests that the strip line structure rather than microstrip line structure should be used in PCB structure. The results in this study indicate that SL and Shield cases yield resonances with high level peaks, due to the feed cable. This study successfully provides a basic model to effectively predict EM radiation from a stripline structure.

Original languageEnglish
Title of host publicationEMC 2011 - Proceedings
Subtitle of host publication2011 IEEE International Symposium on Electromagnetic Compatibility
Pages161-166
Number of pages6
DOIs
Publication statusPublished - 2011 Oct 24
Event2011 IEEE International Symposium on Electromagnetic Compatibility, EMC 2011 - Long Beach, CA, United States
Duration: 2011 Aug 142011 Aug 19

Publication series

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

Other

Other2011 IEEE International Symposium on Electromagnetic Compatibility, EMC 2011
Country/TerritoryUnited States
CityLong Beach, CA
Period11/8/1411/8/19

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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