Suppression of mode conversion by decreasing path difference by using an asymmetrically tapered bend in differential transmission lines

Shohei Kan, Yoshitaka Toyota, Kengo Iokibe, Tetsushi Watanabe

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

4 Citations (Scopus)

Abstract

A tightly coupled asymmetrically tapered bend to suppress differential-to-common-mode conversion (caused by bend discontinuity in a pair of differential transmission lines) is proposed. A tightly coupled tapered bend has been proposed to suppress the mode conversion by decreasing the path difference in the bend. The tightly coupled bend with symmetric tapers makes the path difference shorter so that the differential transmission lines are coupled more tightly, but a path difference of twice the line separation still remains. To decrease the remaining path difference, a pair of asymmetric tapers is proposed. A full-wave simulation demonstrated that the amount of differential-to-common-mode conversion was decreased by 29 dB compared to that of the symmetrically tapered bend. To suppress differential-mode reflection, furthermore, a tightly coupled bend with sectionally divided asymmetric tapers is suggested.

Original languageEnglish
Title of host publicationEMC 2014/Tokyo - 2014 International Symposium on Electromagnetic CompatibiIity, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages129-132
Number of pages4
ISBN (Electronic)9784885522871
Publication statusPublished - Dec 23 2014
Event2014 International Symposium on Electromagnetic CompatibiIity, EMC 2014 - Tokyo, Japan
Duration: May 12 2014May 16 2014

Publication series

NameIEEE International Symposium on Electromagnetic Compatibility
Volume2014-December
ISSN (Print)1077-4076
ISSN (Electronic)2158-1118

Other

Other2014 International Symposium on Electromagnetic CompatibiIity, EMC 2014
CountryJapan
CityTokyo
Period5/12/145/16/14

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Keywords

  • asymmetric tapers
  • differential transmission lines
  • mode conversion
  • tightly coupled bend

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Kan, S., Toyota, Y., Iokibe, K., & Watanabe, T. (2014). Suppression of mode conversion by decreasing path difference by using an asymmetrically tapered bend in differential transmission lines. In EMC 2014/Tokyo - 2014 International Symposium on Electromagnetic CompatibiIity, Proceedings (pp. 129-132). [6997116] (IEEE International Symposium on Electromagnetic Compatibility; Vol. 2014-December). Institute of Electrical and Electronics Engineers Inc..