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Paper Abstract and Keywords
Presentation 2025-07-18 15:50
Monitoring of RF-EMF Levels Using Car-mount Measurements around Major Cities in Japan
Kaoru Esaki, Kazuhiro Tobita, Miwa Ikuyo, Masao Taki, Teruo Onishi (NICT) EMCJ2025-38
Abstract (in Japanese) (See Japanese page) 
(in English) We have been conducting research to quantitatively understand the actual situation of RF-EMF exposure in daily life and to consider how risk communication should be conducted. It was reported that we measured the area within a radius of 100 km around Tokyo Nihonbashi in FY2021, and confirmed that the E-field strength from mobile phone base stations is positively proportional to the population density. In this manuscript, the results of measurements in six major cities (Sapporo, Sendai, Tokyo, Nagoya, Osaka, and Fukuoka) and their surrounding areas in FY2022, and in nine regional cities (mainly government-designated cities) and central Tokyo in FY2023, expanding the measurement area nationwide are reported. As our previous results, it is confirmed that the E-field strength tends to be higher in the center of each city and lower in the suburbs and mountainous areas, and that there is a positive proportional relationship between the E-field strength and population density.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile base stations / Broadcast / Vehicle / RF-EMF level / Electric field strength / Population density / Radio protection guidelines /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 121, EMCJ2025-38, pp. 7-10, July 2025.
Paper # EMCJ2025-38 
Date of Issue 2025-07-11 (EMCJ) 
ISSN 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)
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Conference Information
Committee EMD EMCJ WPT  
Conference Date 2025-07-18 - 2025-07-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2025-07-EMD-EMCJ-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Monitoring of RF-EMF Levels Using Car-mount Measurements around Major Cities in Japan 
Sub Title (in English)  
Keyword(1) Mobile base stations  
Keyword(2) Broadcast  
Keyword(3) Vehicle  
Keyword(4) RF-EMF level  
Keyword(5) Electric field strength  
Keyword(6) Population density  
Keyword(7) Radio protection guidelines  
Keyword(8)  
1st Author's Name Kaoru Esaki  
1st Author's Affiliation National Institute of Information and Communications Technology (NICT)
2nd Author's Name Kazuhiro Tobita  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Miwa Ikuyo  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
4th Author's Name Masao Taki  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
5th Author's Name Teruo Onishi  
5th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2025-07-18 15:50:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2025-38 
Volume (vol) vol.125 
Number (no) no.121 
Page pp.7-10 
#Pages 4 
Date of Issue 2025-07-11 (EMCJ) 

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