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Presentation 2021-03-05 10:05
A Study of Uncertainty Evaluations for SAR Probe Calibration in Frequency Band of 5G Sub-6
Yuto Shimizu, Tomoaki Nagaoka, Nozomu Ishii, Kanako Wake, Soichi Watanabe (NICT) EMCJ2020-75
Abstract (in Japanese) (See Japanese page) 
(in English) Nowadays, the fifth generation wireless mobile system (5G), which was released in 2020, mainly uses a frequency band from 3.6 to 4.9 GHz called sub-6. Wireless devices used near a human body are required to assess human exposure to EMF from those devices. The specific absorption rate (SAR) is used for an assessment of a human exposure to EMF from cellular phones in frequency band form 700 MHz to 6 GHz. The SAR probe which is one of the electric field sensor is used for SAR measurement, but before measurement, probe calibration should be performed to relate the received electric field to the output voltage of the SAR probe. In addition, the uncertainty evaluation is necessary to guarantee the calibration result. We had performed the SAR probe calibration and the uncertainty evaluation in the frequency band from 700 MHz to 3.5 GHz used for fourth generation wireless mobile system (4G). In this study, we evaluated the probe calibration uncertainty in the frequency band of 5G sub-6. Additionally, we found dominant uncertainty sources of the probe calibration and compared the uncertainty budget of 5G sub-6 with that of 4G.
Keyword (in Japanese) (See Japanese page) 
(in English) human exposure assessment / SAR measurement / probe calibration / uncertainty evaluation / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 420, EMCJ2020-75, pp. 17-21, March 2021.
Paper # EMCJ2020-75 
Date of Issue 2021-02-26 (EMCJ) 
ISSN Online edition: ISSN 2432-6380
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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 EMCJ MICT  
Conference Date 2021-03-05 - 2021-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2021-03-EMCJ-MICT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Uncertainty Evaluations for SAR Probe Calibration in Frequency Band of 5G Sub-6 
Sub Title (in English)  
Keyword(1) human exposure assessment  
Keyword(2) SAR measurement  
Keyword(3) probe calibration  
Keyword(4) uncertainty evaluation  
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1st Author's Name Yuto Shimizu  
1st Author's Affiliation NICT (NICT)
2nd Author's Name Tomoaki Nagaoka  
2nd Author's Affiliation NICT (NICT)
3rd Author's Name Nozomu Ishii  
3rd Author's Affiliation NICT (NICT)
4th Author's Name Kanako Wake  
4th Author's Affiliation NICT (NICT)
5th Author's Name Soichi Watanabe  
5th Author's Affiliation NICT (NICT)
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Speaker Author-1 
Date Time 2021-03-05 10:05:00 
Presentation Time 20 minutes 
Registration for EMCJ 
Paper # EMCJ2020-75 
Volume (vol) vol.120 
Number (no) no.420 
Page pp.17-21 
#Pages
Date of Issue 2021-02-26 (EMCJ) 


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