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Paper Abstract and Keywords
Presentation 2018-05-18 14:35
[Invited Talk] Assessment methods for radio protection with respect to advanced wireless systems
Teruo Onishi (NTT DOCOMO) MWP2018-1
Abstract (in Japanese) (See Japanese page) 
(in English) Currently research and development as well as standardization on the 5th mobile communication system (5G) have been actively conducted all over the world. Frequency bands above 6 GHz for 5G are considered in addition to those used for current mobile systems. From exposure assessment point of view, the power density should be used above 6 GHz as a measurement index while the Specific Absorption Rate (SAR) has been used for near-field exposure up to 6 GHz. Basically, the power density can be obtained by measuring the electric field in the far-field. However, since it is expected that mobile devices that operate above 6 GHz will be used in close proximity to the human body, exposure assessment methods focusing on near-field exposure should be investigated. Wireless Power Transfer (WPT) systems for mobile phones, portable devices, home appliances, and electric vehicles (EV) have been paid attention. Especially WPT systems for mobile phones and EVs have been standardized by some international bodies such International Electrotechnical Commission (IEC), respectively. The transmitted power in WPT systems is much higher than that emitted by conventional wireless devices, e.g., several kW for EV even though the employed frequency ranges are much lower, i.e., below 10 MHz. An exposure assessment at frequency range from several tens of kHz to tens of GHz has become more importants. In this paper, standardization activities with respect to evaluation of human exposure conducted by the IEC are introduced.
Keyword (in Japanese) (See Japanese page) 
(in English) Evaluation of human exposure / 5th generation communication system (5G) / Wireless Power Transfer (WPT) / International Electrotechnical Commission (IEC) / Specific Absorption Rate (SAR) / Power density / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 43, MWP2018-1, pp. 1-6, May 2018.
Paper # MWP2018-1 
Date of Issue 2018-05-11 (MWP) 
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)
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Conference Information
Committee MWP  
Conference Date 2018-05-18 - 2018-05-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile communication systems, MWP, etc. 
Paper Information
Registration To MWP 
Conference Code 2018-05-MWP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Assessment methods for radio protection with respect to advanced wireless systems 
Sub Title (in English)  
Keyword(1) Evaluation of human exposure  
Keyword(2) 5th generation communication system (5G)  
Keyword(3) Wireless Power Transfer (WPT)  
Keyword(4) International Electrotechnical Commission (IEC)  
Keyword(5) Specific Absorption Rate (SAR)  
Keyword(6) Power density  
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Keyword(8)  
1st Author's Name Teruo Onishi  
1st Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
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Speaker Author-1 
Date Time 2018-05-18 14:35:00 
Presentation Time 35 minutes 
Registration for MWP 
Paper # MWP2018-1 
Volume (vol) vol.118 
Number (no) no.43 
Page pp.1-6 
#Pages 6 
Date of Issue 2018-05-11 (MWP) 

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