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| Presentation | 2013-04-12 14:35 Influence of radio wave absorber performance to test result deviation between full anechoic room and semi-anechoic room. Keita Nagaoka, Nobuo Kuwabara (Kyushu Inst. of Tech.), Hidenori Muramatsu, Toshiki Shimasaki (VCCI)  EMCJ2013-6 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A full anechoic room (FAR) is investigated as the test facility which is used for the radiated emission tests from the information technology equipment. The limits of disturbances by FAR are different from that by semi-anechoic room (SAR) because the configuration of FAR is different from that of SAR. However, the investigation of the test result correlation between FAR and SAR is important to evaluate the test results by FAR because a SAR is used for the test facilities of the radiation disturbance test. In this report, we evaluate the effect of the absorber performance against the test result correlation by using the FDTD method. In the investigation, to analyze an anechoic room, the radio wave absorber was modeled by the large cells which approximate the absorber as multilayer materials. The material constants were determined from the constants of the absorber materials considering with the occupied volume. The normalized site attenuation (NSA) of a small anechoic room was calculated by the FDTD model and the correlations were evaluated by the deviation of the NSA. The results show that the deviation is reduced comparing with the case of a perfect absorber by employing the radio wave absorbers whose reflection loss is finite. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | FDTD method / Anechoic room / Radio wave absorber / Site attenuation / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 2, EMCJ2013-6, pp. 31-36, April 2013. | |
| Paper # | EMCJ2013-6 | |
| Date of Issue | 2013-04-05 (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 | EMCJ2013-6 |
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| Conference Information | |
| Committee | EMCJ |
| Conference Date | 2013-04-12 - 2013-04-12 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okayama Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | PCM,Information Security,EMC |
| Paper Information | |
| Registration To | EMCJ |
| Conference Code | 2013-04-EMCJ |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Influence of radio wave absorber performance to test result deviation between full anechoic room and semi-anechoic room. |
| Sub Title (in English) | |
| Keyword(1) | FDTD method |
| Keyword(2) | Anechoic room |
| Keyword(3) | Radio wave absorber |
| Keyword(4) | Site attenuation |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Keita Nagaoka |
| 1st Author's Affiliation | Kyushu Institute of Technology (Kyushu Inst. of Tech.) |
| 2nd Author's Name | Nobuo Kuwabara |
| 2nd Author's Affiliation | Kyushu Institute of Technology (Kyushu Inst. of Tech.) |
| 3rd Author's Name | Hidenori Muramatsu |
| 3rd Author's Affiliation | VCCI Council (VCCI) |
| 4th Author's Name | Toshiki Shimasaki |
| 4th Author's Affiliation | VCCI Council (VCCI) |
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| Speaker | Author-1 |
| Date Time | 2013-04-12 14:35:00 |
| Presentation Time | 25 minutes |
| Registration for | EMCJ |
| Paper # | EMCJ2013-6 |
| Volume (vol) | vol.113 |
| Number (no) | no.2 |
| Page | pp.31-36 |
| #Pages | 6 |
| Date of Issue | 2013-04-05 (EMCJ) |
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