Common-mode noise reduction of bended differential lines using meander line structure

Jaehyuk Lim, Seungjin Lee, Jae Hoon Lee, Yonghoon Kim, Dan Oh

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

2 Citations (Scopus)

Abstract

Time skew between inner line and outer line is main reason to induce differential to common-mode noise in differential bended lines. To compensate time skew arisen length difference of inner line and outer line, meander line structure was adopted. The increase of time delay for differential signal by mender line structure was verified by simulated results on balanced coupled transmission lines. The meander line structure, having four pair of section 1, and 2, or section 2, and 3 was adopted to inner line of right-angle bended line at both sides, and common-mode noises was reduced about 87 % of that induced by bended lines without meander line structure. From measured results, it was verified that Scd2i were below 20-dB within range of 4 GHz both simulation and measurement, which means the time skew was compensated well with low differential insertion loss within range of 4 GHz both simulation and measurement. The length and width of meander line structure were only 1.2 mm and 1.75 mm, respectively, therefore, it has advantage of size miniaturization.

Original languageEnglish
Title of host publication2018 IEEE International Symposium on Electromagnetic Compatibility and 2018 IEEE Asia-Pacific Symposium on Electromagnetic Compatibility, EMC/APEMC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages442-445
Number of pages4
ISBN (Electronic)9781509059973
DOIs
Publication statusPublished - 2018 Jun 22
Event60th IEEE International Symposium on Electromagnetic Compatibility and 9th IEEE Asia-Pacific Symposium on Electromagnetic Compatibility, EMC/APEMC 2018 - Suntec City, Singapore
Duration: 2018 May 142018 May 18

Other

Other60th IEEE International Symposium on Electromagnetic Compatibility and 9th IEEE Asia-Pacific Symposium on Electromagnetic Compatibility, EMC/APEMC 2018
CountrySingapore
CitySuntec City
Period18/5/1418/5/18

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Keywords

  • Common-mode noise reduction
  • Differential time skew
  • Meander line structure
  • Right-angle bended coupled line
  • Size miniaturization
  • Skew compensation

ASJC Scopus subject areas

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality
  • Radiation

Cite this

Lim, J., Lee, S., Lee, J. H., Kim, Y., & Oh, D. (2018). Common-mode noise reduction of bended differential lines using meander line structure. In 2018 IEEE International Symposium on Electromagnetic Compatibility and 2018 IEEE Asia-Pacific Symposium on Electromagnetic Compatibility, EMC/APEMC 2018 (pp. 442-445). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISEMC.2018.8393817