| 講演抄録/キーワード |
| 講演名 |
2025-11-07 10:20
Co-Analysis of Mode Conversion Caused by Pigtail Termination Imbalance in Four-Conductor Transmission Systems ○Md Zahidul Islam・Masahiro Yoshida・Kazuto Kohno・Yoshitaka Toyota(Okayama Univ.) EMCJ2025-74 |
| 抄録 |
(和) |
Imbalance difference is the key parameter to causes mode conversion on the transmission line. For investigating mode conversion in four-conductor systems, a co-analysis approach integrating a secondary common-mode three-dimensional full-wave model design and a modal-equivalent circuit has been developed. This approach extends the conventional modal-equivalent-circuit method by coupling the imbalance difference and current division factors extracted from HFSS. The co-analysis enables direct evaluation of mode conversion caused by pigtail termination imbalance in shielded twisted-pair (STP) cables. Mixed-mode S-parameters corresponding to normal mode, primary-common mode, and secondary-common mode are analysed under both balanced and unbalanced conditions. As a result, the proposed method clarifies that mode conversion strongly depends on termination imbalance, and it effectively reproduces the electromagnetic behaviour of pigtail-terminated STP systems. |
| (英) |
Imbalance difference is the key parameter to causes mode conversion on the transmission line. For investigating mode conversion in four-conductor systems, a co-analysis approach integrating a secondary common-mode three-dimensional full-wave model design and a modal-equivalent circuit has been developed. This approach extends the conventional modal-equivalent-circuit method by coupling the imbalance difference and current division factors extracted from HFSS. The co-analysis enables direct evaluation of mode conversion caused by pigtail termination imbalance in shielded twisted-pair (STP) cables. Mixed-mode S-parameters corresponding to normal mode, primary-common mode, and secondary-common mode are analysed under both balanced and unbalanced conditions. As a result, the proposed method clarifies that mode conversion strongly depends on termination imbalance, and it effectively reproduces the electromagnetic behaviour of pigtail-terminated STP systems. |
| キーワード |
(和) |
four-conductor transmission systems / Co-analysis / Mode conversion sources / Pigtail termination / Current division factor / Mixed-mode S-parameters / Imbalance difference / |
| (英) |
four-conductor transmission systems / Co-analysis / Mode conversion sources / Pigtail termination / Current division factor / Mixed-mode S-parameters / Imbalance difference / |
| 文献情報 |
信学技報, vol. 125, no. 230, EMCJ2025-74, pp. 22-27, 2025年11月. |
| 資料番号 |
EMCJ2025-74 |
| 発行日 |
2025-10-31 (EMCJ) |
| ISSN |
Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
| PDFダウンロード |
EMCJ2025-74 |
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