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| Presentation | 2012-03-15 11:20 Experimental study on multi-point wireless energy transmission at 950MHz band Daiki Maehara, Kei Sakaguchi, Kiyomichi Araki (Tokyo Tech.), Takehiro Miyamoto, Minoru Furukawa, Tadashi Shirato (DENGYO)  AP2011-201 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Wireless energy transmission at 950MHz band has been applied to many applications including RFID (Radio Frequency IDentification) systems. However, the problem of restricted transmit power defined by radio reg- ulation and the standing-wave occured in indoor propagational environments limit the coverage of wireless energy transmission. On the other hand, limited sensor node life-time has long been an issue in wireless sensor networks. In this study, we proposed multi-point wireless energy transmission with carrier-shift diversity to achieve wider coverage of wireless energy transmission via wireless grid. We conduct an experiment to show the benefits of the proposed scheme in terms of extending coverage. In this experiment, we employ RFID Reader/Writers to perform wireless energy transmission, an IC tag antenna to receive energy, and a phase shifter to perform carrier offset. Experimental results show that the coverage of single-point and multi-point wireless energy transmission without carrier-shift diversity are both 96%. On the other hand, the coverage of proposed wireless energy transmission achieves 100% to activate sensors with consumed power of -10dBm. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | wireless energy transmission / wireless sensor networks / indoor environment / passive RFID / 950MHz / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 487, AP2011-201, pp. 13-17, March 2012. | |
| Paper # | AP2011-201 | |
| Date of Issue | 2012-03-08 (AP) | |
| 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 | AP2011-201 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2012-03-15 - 2012-03-16 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Chuo public hall (Atami City) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2012-03-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Experimental study on multi-point wireless energy transmission at 950MHz band |
| Sub Title (in English) | |
| Keyword(1) | wireless energy transmission |
| Keyword(2) | wireless sensor networks |
| Keyword(3) | indoor environment |
| Keyword(4) | passive RFID |
| Keyword(5) | 950MHz |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Daiki Maehara |
| 1st Author's Affiliation | Tokyo Institute of technology (Tokyo Tech.) |
| 2nd Author's Name | Kei Sakaguchi |
| 2nd Author's Affiliation | Tokyo Institute of technology (Tokyo Tech.) |
| 3rd Author's Name | Kiyomichi Araki |
| 3rd Author's Affiliation | Tokyo Institute of technology (Tokyo Tech.) |
| 4th Author's Name | Takehiro Miyamoto |
| 4th Author's Affiliation | Nihon Dengyo Kosaku Co.,Ltd. (DENGYO) |
| 5th Author's Name | Minoru Furukawa |
| 5th Author's Affiliation | Nihon Dengyo Kosaku Co.,Ltd. (DENGYO) |
| 6th Author's Name | Tadashi Shirato |
| 6th Author's Affiliation | Nihon Dengyo Kosaku Co.,Ltd. (DENGYO) |
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| Speaker | Author-1 |
| Date Time | 2012-03-15 11:20:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2011-201 |
| Volume (vol) | vol.111 |
| Number (no) | no.487 |
| Page | pp.13-17 |
| #Pages | 5 |
| Date of Issue | 2012-03-08 (AP) |
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