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Paper Abstract and Keywords
Presentation 2007-03-09 14:25
Estimation of Radio-frequency Radiating Source Power from Unintentional Devices such as Information Technology Equipment:2nd report
Shoetsu Miura (EMF) EMCJ2006-124
Abstract (in Japanese) (See Japanese page) 
(in English) EMF and its health effects is one of modern topics. Not only RTE intentional equipment but also ITE unintentional equipment is requesting the exposure assessment. For high frequency band, we can declare that comply with ICNIRP basic restriction, as RF emitting power is less than 20mW. EN50371 was published and acting in Europe. Similar standard is now proposed as New Work Item Proposal in IEC TC106. Assessment protocol for emitting power for unintentional equipment such as ITE is not fixed yet. This paper reports our study and finding on this topic.
Measurement around the ITE is not easy way. One approach is estimating the emitting power based on the field strength data or limit value in far field in the meaning of EMI requirement. This first approach was confirmed that cumulative RF power calculated by far field data is equal to emitting source power of unintentional apparatus. Also as second approach, near filed strength both electric field and magnetic field was estimated based on the EMI requirement, and find these field strength is very low, such as 1% of reference level of ICNIRP. Both approaches are useful protocol for manufacturer of ITE. One point left as pending, emission up and down wards from apparatus that not measured in EMI requirement though.
Keyword (in Japanese) (See Japanese page) 
(in English) Unintentional Radiation / ITE / Emitting power / Far field / Near field / / /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 579, EMCJ2006-124, pp. 49-54, March 2007.
Paper # EMCJ2006-124 
Date of Issue 2007-03-02 (EMCJ) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 EMCJ  
Conference Date 2007-03-09 - 2007-03-09 
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 2007-03-EMCJ 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Estimation of Radio-frequency Radiating Source Power from Unintentional Devices such as Information Technology Equipment:2nd report 
Sub Title (in English)  
Keyword(1) Unintentional Radiation  
Keyword(2) ITE  
Keyword(3) Emitting power  
Keyword(4) Far field  
Keyword(5) Near field  
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1st Author's Name Shoetsu Miura  
1st Author's Affiliation EMF com. JEITA (EMF)
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Speaker Author-1 
Date Time 2007-03-09 14:25:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2006-124 
Volume (vol) vol.106 
Number (no) no.579 
Page pp.49-54 
#Pages 6 
Date of Issue 2007-03-02 (EMCJ) 

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