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| Presentation | 2018-03-16 13:00 Evaluation of Differential Skew Depending on Rotation Angle in Printed Circuit Board with Meshed Ground Plane Chenyu Wang, Kengo Iokibe, Yoshitaka Toyota (Okayama Univ.)  EMCJ2017-109 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In general, the rotation angle between the differential transmission lines and the meshed ground of a flexible printed circuit board is 45 ° and the differential-transmission lines are placed symmetrically to the pattern of the meshed ground. By considering the symmetry, the separation between adjacent differential lines depends on the pitch of the mesh structure. The decrease in the dielectric thickness with keeping the characteristic impedance expands the mesh pitch. However, this reduces the wiring density. On the other hand, the asymmetry, or imbalance, of the differential transmission lines over a meshed ground plane causes the differential skew. This study focuses on the angle between the trace of the differential transmission lines and the meshed ground plane to investigate the angle dependence of the differential skew by a simple model. A preliminary evaluation was conducted by analytical estimation of the phase delay difference in the differential transmission lines using the simple model. In a full-wave simulation, it is found that the differential skew does not depend on the position of the differential transmission lines to the pattern of meshed ground and keeps a comparatively small value at the rotation angle around 30°. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Simple model / Differential transmission lines / Phase delay / Differential skew / Angle dependence / Position dependence / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 510, EMCJ2017-109, pp. 25-30, March 2018. | |
| Paper # | EMCJ2017-109 | |
| Date of Issue | 2018-03-09 (EMCJ) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | EMCJ2017-109 |
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| Conference Information | |
| Committee | EMCJ MICT |
| Conference Date | 2018-03-16 - 2018-03-16 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | EMC |
| Paper Information | |
| Registration To | EMCJ |
| Conference Code | 2018-03-EMCJ-MICT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of Differential Skew Depending on Rotation Angle in Printed Circuit Board with Meshed Ground Plane |
| Sub Title (in English) | |
| Keyword(1) | Simple model |
| Keyword(2) | Differential transmission lines |
| Keyword(3) | Phase delay |
| Keyword(4) | Differential skew |
| Keyword(5) | Angle dependence |
| Keyword(6) | Position dependence |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Chenyu Wang |
| 1st Author's Affiliation | Okayama University (Okayama Univ.) |
| 2nd Author's Name | Kengo Iokibe |
| 2nd Author's Affiliation | Okayama University (Okayama Univ.) |
| 3rd Author's Name | Yoshitaka Toyota |
| 3rd Author's Affiliation | Okayama University (Okayama Univ.) |
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| Speaker | Author-1 |
| Date Time | 2018-03-16 13:00:00 |
| Presentation Time | 25 minutes |
| Registration for | EMCJ |
| Paper # | EMCJ2017-109 |
| Volume (vol) | vol.117 |
| Number (no) | no.510 |
| Page | pp.25-30 |
| #Pages | 6 |
| Date of Issue | 2018-03-09 (EMCJ) |
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