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| Presentation | 2006-11-24 14:00 Analysis of Noise Suppression Sheets Using the FDTD Method Masayuki Marubashi, Akira Sugiura (Tohoku Univ.), Katsumi Fujii, Yasushi Matsumoto (NICT)  EMCJ2006-76 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In recent years, thin sheets of lossy magnetic material are widely used for suppressing disturbance currents in electronic circuits and preventing EMI emission from electronic equipment. They have many different compositions of materials but usually called Noise Suppression Sheets (NSS) in EMC fields. In order to analyze effects of the NSS on unwanted disturbances as well as wanted signals, the FDTD method is applied to a microstrip line covered with a commercially available NSS sheet. Firstly, the complex permeability is approximately given by the sum of two Lorentz dispersion formulas, which makes the FDTD applicable to a wide frequency range from 0.1 to 6 GHz. The S-parameters of a microstrip line are computed using the FDTD method and compared with actual measurements using a network analyzer. The TRL calibration is made to achieve accurate measurements. These numerical and experimental analyses reveal that an NSS causes attenuation |1/S21| (dB) proportional to the length of the NSS, while it saturates with increase in the NSS width. To evaluate adverse effects of the NSS on the signal, the group delay is calculated from the S21 given by the FDTD and also the waveform distortion of a signal is estimated for trapezoidal clock pulses (1GHz). It is concluded that an NSS may cause serious effects of the signal waveform which lead errors in digital IC performance. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Noise suppression sheet / Magnetic sheet / EMI suppression / FDTD Method / Signal integrity / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 106, no. 381, EMCJ2006-76, pp. 7-12, Nov. 2006. | |
| Paper # | EMCJ2006-76 | |
| Date of Issue | 2006-11-17 (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 | EMCJ2006-76 |
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| Conference Information | |
| Committee | EMCJ |
| Conference Date | 2006-11-24 - 2006-11-24 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | EMCJ |
| Conference Code | 2006-11-EMCJ |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Analysis of Noise Suppression Sheets Using the FDTD Method |
| Sub Title (in English) | |
| Keyword(1) | Noise suppression sheet |
| Keyword(2) | Magnetic sheet |
| Keyword(3) | EMI suppression |
| Keyword(4) | FDTD Method |
| Keyword(5) | Signal integrity |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Masayuki Marubashi |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Akira Sugiura |
| 2nd Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 3rd Author's Name | Katsumi Fujii |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
| 4th Author's Name | Yasushi Matsumoto |
| 4th Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
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| Speaker | Author-1 |
| Date Time | 2006-11-24 14:00:00 |
| Presentation Time | 25 minutes |
| Registration for | EMCJ |
| Paper # | EMCJ2006-76 |
| Volume (vol) | vol.106 |
| Number (no) | no.381 |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2006-11-17 (EMCJ) |
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