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| Presentation | 2009-12-17 15:20 A Technique for Wireless LAN Connection through Building Concrete Wall at 2.4GHz Shizuo Mizushina, Atsushi Adachi (Enegene)  MW2009-148 Link to ES Tech. Rep. Archives: MW2009-148 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | ABSTRACT A technique for wireless LAN connection through building concrete wall is proposed. The propagation loss in 10cm-thick concrete wall is about -8.9dB at 2.4GHz from simulation and experiment. Using a large aperture horn antenna and an impedance matching layer placed flush on the back of wall, the attenuated signal power is raked over a wide area and is reradiated into the space behind wall via a second antenna connected back-to-back to the first one. It is possible to make the reradiated field in a region near the second antenna nearly as strong as that of incident wave. A small-power repeater based on IEEE802.11 standard is placed in this region to complete the downlink. In the uplink, the power from the repeater is collected by the 2nd antenna, amplified, and radiated by the horn antenna into the space outside the wall. To make the uplink versus downlink link budgets balanced, an amplifier with about 13dB gain is required in the uplink. Gain of the amplifier is so set as to comply with the limit set by regulatory agency. The proposed method is analyzed by 3D simulation and its feasibility is supported by experiment. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Wireless LAN / propagation loss in concrete wall / impedance matching layer / horn antenna / link budgets / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 342, MW2009-148, pp. 29-34, Dec. 2009. | |
| Paper # | MW2009-148 | |
| Date of Issue | 2009-12-10 (MW) | |
| 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 | MW2009-148 Link to ES Tech. Rep. Archives: MW2009-148 |
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| Conference Information | |
| Committee | MW |
| Conference Date | 2009-12-17 - 2009-12-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kanazawa Inst. of Tech. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave Technologies |
| Paper Information | |
| Registration To | MW |
| Conference Code | 2009-12-MW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Technique for Wireless LAN Connection through Building Concrete Wall at 2.4GHz |
| Sub Title (in English) | |
| Keyword(1) | Wireless LAN |
| Keyword(2) | propagation loss in concrete wall |
| Keyword(3) | impedance matching layer |
| Keyword(4) | horn antenna |
| Keyword(5) | link budgets |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shizuo Mizushina |
| 1st Author's Affiliation | Enegene Co. Ltd. (Enegene) |
| 2nd Author's Name | Atsushi Adachi |
| 2nd Author's Affiliation | Enegene Co. Ltd. (Enegene) |
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| Speaker | Author-1 |
| Date Time | 2009-12-17 15:20:00 |
| Presentation Time | 25 minutes |
| Registration for | MW |
| Paper # | MW2009-148 |
| Volume (vol) | vol.109 |
| Number (no) | no.342 |
| Page | pp.29-34 |
| #Pages | 6 |
| Date of Issue | 2009-12-10 (MW) |
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