Presentation 2020-01-24
Evaluation method of common-mode conversion in communication device connected with STP cable
Fumikazu Kobayashi, Tohlu Matsushima, Yuki Fukumoto,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) A mixed-mode S-parameter and a longitudinal conversion loss have been proposed for evaluation of mode conversion between differential mode and common mode in a communication device. For a cable having two signal lines and shield conductor (STP cable), however, three types of mode should be required. A communication devices connected with a shielded and balanced pair line was focused on this report. In a transmission line consisted of pair coupling lines, a surrounding shield and system ground, one differential mode and two type of common mode were defined. Additionally, a voltage ratio between the differential mode and the common mode was derived in order to evaluate mode conversion in the communication device connected with the STP cable. Using a circuit simulator, the derived ratio of modal voltages corresponded to the common mode current flowing in the STP cable.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) mode conversion / STP cable / differential-mode / common-mode
Paper # EMCJ2019-83
Date of Issue 2020-01-17 (EMCJ)

Conference Information
Committee EMCJ / IEE-EMC
Conference Date 2020/1/24(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Kensei Oh(Nagoya Inst. of Tech.) / Ken-ichi Yamazaki(電中研)
Vice Chair Atsuhiro Nishikata(Tokyo Inst. of Tech.) / Shinobu Ishigami(東北学院大) / Masateru Ikehata(鉄道総研)
Secretary Atsuhiro Nishikata(Tokyo Inst. of Tech.) / Shinobu Ishigami(Denso) / Masateru Ikehata
Assistant Nami Sasaki(Seiwa Electric MFG) / Hiroyoshi Shida(Tokin EMC Engineering) / Sho Muroga(Akita Univ.) / Takaaki Ibuchi(阪大)

Paper Information
Registration To Technical Committee on Electromagnetic Compatibility / Technical Meeting on Electromagnetic Compatibility
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Evaluation method of common-mode conversion in communication device connected with STP cable
Sub Title (in English)
Keyword(1) mode conversion
Keyword(2) STP cable
Keyword(3) differential-mode
Keyword(4) common-mode
1st Author's Name Fumikazu Kobayashi
1st Author's Affiliation Kyushu Institute of Technology(Kyutech)
2nd Author's Name Tohlu Matsushima
2nd Author's Affiliation Kyushu Institute of Technology(Kyutech)
3rd Author's Name Yuki Fukumoto
3rd Author's Affiliation Kyushu Institute of Technology(Kyutech)
Date 2020-01-24
Paper # EMCJ2019-83
Volume (vol) vol.119
Number (no) EMCJ-387
Page pp.pp.11-16(EMCJ),
#Pages 6
Date of Issue 2020-01-17 (EMCJ)