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Paper Abstract and Keywords
Presentation 2021-07-02 14:45
EM-Field Visualization by Using a Half Wavelength LED Dipole Antenna
Masashi Nakatsugawa, Daiki Ikeno, Tamami Maruyama (NIT, Hakodate College), Yasuhiro Tamayama (Nagaoka Univ. of Technol.) WPT2021-6
Abstract (in Japanese) (See Japanese page) 
(in English) An EM-field measurement method by using a half wavelength LED dipole antenna was proposed. The LED in the antenna can be lit by the received DC power fed by rectifying RF signals. The LED's brightness depends on the DC power provided, suggesting use as an EM field strength indicator where the half wavelength LED dipole antenna is located. The EM field and wireless power transfer efficiency were simulated to investigate the half wavelength LED dipole antenna's potential. A prototyped measurement system for experiments was constructed. The received power with antenna directed x-direction was measured the largest among x-, y-, and z-directions. The corrected received power for x- and z-directions was compared using the simulated Poynting vector components. The results showed good agreement ensuring the effectiveness of using a half wavelength LED dipole antenna as a signal strength indicator to measure the EM field.
Keyword (in Japanese) (See Japanese page) 
(in English) dipole antenna / electromagnetic field / light emitting diode / field visualization / wireless power transfer / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 84, WPT2021-6, pp. 7-12, July 2021.
Paper # WPT2021-6 
Date of Issue 2021-06-25 (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)
Download PDF WPT2021-6

Conference Information
Committee EMCJ EMD WPT  
Conference Date 2021-07-02 - 2021-07-02 
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 2021-07-EMCJ-EMD-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) EM-Field Visualization by Using a Half Wavelength LED Dipole Antenna 
Sub Title (in English)  
Keyword(1) dipole antenna  
Keyword(2) electromagnetic field  
Keyword(3) light emitting diode  
Keyword(4) field visualization  
Keyword(5) wireless power transfer  
1st Author's Name Masashi Nakatsugawa  
1st Author's Affiliation National Institute of Technology, Hakodate College (NIT, Hakodate College)
2nd Author's Name Daiki Ikeno  
2nd Author's Affiliation National Institute of Technology, Hakodate College (NIT, Hakodate College)
3rd Author's Name Tamami Maruyama  
3rd Author's Affiliation National Institute of Technology, Hakodate College (NIT, Hakodate College)
4th Author's Name Yasuhiro Tamayama  
4th Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Technol.)
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Speaker Author-1 
Date Time 2021-07-02 14:45:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2021-6 
Volume (vol) vol.121 
Number (no) no.84 
Page pp.7-12 
Date of Issue 2021-06-25 (WPT) 

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