Presentation 2020-05-15
Preliminary Examination of Impedance Discontinuity Detection on Wire Network by Sequence Time Domain Reflectometry
Daiki Kameyama, Yoshitaka Toyota, Kengo iokibe,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In this paper, we examine the impedance discontinuity detection on wire network by applying sequence time domain reflectometry (STDR) using maximal-length codes (M-sequences). This paper especially examines impedance discontinuity detection under the multiple reflection that generates at nodes on wire network. First, the preliminary investigation of impedance discontinuity detection on a wire network with one node is performed and it was confirmed that STDR that performs the cross-correlation of the received signal with the incident signal exhibits higher noise immunity than TDR. Next, it was demonstrated that STDR is able to distinguish the impedance discontinuity of various (resistive, inductive, and capacitive) impedance variation on a wire from the shape of the reflected signal. Finally, it was also demonstrated that STDR is able to detect the location of the impedance discontinuity due to small inductance on a wire network with four nodes.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) sequence time domain reflectometry (STDR) / M-sequence / cross-correlation / impedance discontinuity detection / wire network
Paper # EMCJ2020-7
Date of Issue 2020-05-08 (EMCJ)

Conference Information
Committee EMCJ
Conference Date 2020/5/15(1days)
Place (in Japanese) (See Japanese page)
Place (in English) SEIWA ELECTRIC MFG
Topics (in Japanese) (See Japanese page)
Topics (in English) EMC
Chair Kensei Oh(Nagoya Inst. of Tech.)
Vice Chair Atsuhiro Nishikata(Tokyo Inst. of Tech.)
Secretary Atsuhiro Nishikata(Tokyo Inst. of Tech.)
Assistant Nami Sasaki(Seiwa Electric MFG) / Hiroyoshi Shida(Tokin EMC Engineering) / Sho Muroga(Akita Univ.)

Paper Information
Registration To Technical Committee on Electromagnetic Compatibility
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Preliminary Examination of Impedance Discontinuity Detection on Wire Network by Sequence Time Domain Reflectometry
Sub Title (in English)
Keyword(1) sequence time domain reflectometry (STDR)
Keyword(2) M-sequence
Keyword(3) cross-correlation
Keyword(4) impedance discontinuity detection
Keyword(5) wire network
1st Author's Name Daiki Kameyama
1st Author's Affiliation Okayama University(Okayama Univ.)
2nd Author's Name Yoshitaka Toyota
2nd Author's Affiliation Okayama University(Okayama Univ.)
3rd Author's Name Kengo iokibe
3rd Author's Affiliation Okayama University(Okayama Univ.)
Date 2020-05-15
Paper # EMCJ2020-7
Volume (vol) vol.120
Number (no) EMCJ-20
Page pp.pp.15-20(EMCJ),
#Pages 6
Date of Issue 2020-05-08 (EMCJ)