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Paper Abstract and Keywords
Presentation 2021-01-22 13:25
Temporal Variation of an Open Voltage Obtained by an AM Radio Broadcasting Rectenna
Takuya Komatsu, Keitaro Omura, Norimasa Nakashima (FIT) WPT2020-31
Abstract (in Japanese) (See Japanese page) 
(in English) The authors are conducting research on energy harvesting by using AM radio electromagnetic waves because our institution is close to AM radio stations. The MF wave used for AM radio is affected by the ionosphere whose state is different between the daytime and the nighttime. Therefore, it is considered that the output of an AM radio rectenna differs between daytime and nighttime. In this paper, we make a prototypes of a short coil and an open coil and install to the rectenna. In the experiment, the open voltage obtained with the rectenna is measured for 24 hours to consider the effect of the ionosphere. As a result, it is found that the ionosphere affects both coils and the difference due to temporal variation was larger for a short coil than for an open coil.
Keyword (in Japanese) (See Japanese page) 
(in English) Energy harvesting / Short coil / Open Coil / Open voltage / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 326, WPT2020-31, pp. 7-11, Jan. 2021.
Paper # WPT2020-31 
Date of Issue 2021-01-14 (WPT) 
ISSN Online edition: ISSN 2432-6380
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)
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Conference Information
Committee WPT AP  
Conference Date 2021-01-21 - 2021-01-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To WPT 
Conference Code 2021-01-WPT-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Temporal Variation of an Open Voltage Obtained by an AM Radio Broadcasting Rectenna 
Sub Title (in English)  
Keyword(1) Energy harvesting  
Keyword(2) Short coil  
Keyword(3) Open Coil  
Keyword(4) Open voltage  
1st Author's Name Takuya Komatsu  
1st Author's Affiliation Fukuoka Institute of Technology (FIT)
2nd Author's Name Keitaro Omura  
2nd Author's Affiliation Fukuoka Institute of Technology (FIT)
3rd Author's Name Norimasa Nakashima  
3rd Author's Affiliation Fukuoka Institute of Technology (FIT)
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Speaker Author-1 
Date Time 2021-01-22 13:25:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2020-31 
Volume (vol) vol.120 
Number (no) no.326 
Page pp.7-11 
Date of Issue 2021-01-14 (WPT) 

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