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Paper Abstract and Keywords
Presentation 2013-05-10 09:30
A Fundamental Study on Estimation of 3 m Test-range from Near-field Electromagnetic Wave Measurement
Masataka Midori, Hiroshi Kurihara (TDK), Takahiro Aoyagi (Tokyo Inst. of Tech.) EMCJ2013-11
Abstract (in Japanese) (See Japanese page) 
(in English) We have investigated the estimation of 3 m and 10 m test-range electromagnetic field by measuring the near-field of radiating electromagnetic wave from EUT on the lower frequency range below 1GHz. In this technical report, we have studied fundamentally the estimation of 3 m test-range height pattern from the near-field, which the tangential electromagnetic waves on the surface of 1 m square surrounding the dipole antenna placed on the ground plane are measured by using the electric and magnetic probe. The analysis frequency range is from 300 MHz to 500 MHz (the dipole antenna element is tuned 400 MHz), and the polarization is fixed horizontal. On the other hand, the reference of 3 m test-range height pattern used NEC2 (Numerical Electric Code) calculation one. The 3 m test-range electric field strength is calculated according to Field Equivalence Principle through replacing the electromagnetic field vectors with the electromagnetic sources vectors. The ground plane is hypothesized the infinite conductive plane, and the image receiving point is formed against the real receiving point on the ground plane. The 3 m test-range electric field strength is calculated by adding the each estimated electric field vector both the real and image receiving point. And then the 3 m test-range height pattern is obtained by using the correction value with each height which is involved antenna factor, mutual coupling, etc. As the results, the estimation of 3 m test-rang height pattern is in agreement with NEC2 calculation one. It is within ±2 dB, except null points. The estimation results on the condition of ground plane demonstrated the effectiveness of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) Near-field / Field Equivalence Principle / Far-field Estimation / 3 m Test-range / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 25, EMCJ2013-11, pp. 7-12, May 2013.
Paper # EMCJ2013-11 
Date of Issue 2013-05-03 (EMCJ) 
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 EMCJ  
Conference Date 2013-05-10 - 2013-05-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Tech 
Topics (in Japanese) (See Japanese page) 
Topics (in English) EMC 
Paper Information
Registration To EMCJ 
Conference Code 2013-05-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Fundamental Study on Estimation of 3 m Test-range from Near-field Electromagnetic Wave Measurement 
Sub Title (in English)  
Keyword(1) Near-field  
Keyword(2) Field Equivalence Principle  
Keyword(3) Far-field Estimation  
Keyword(4) 3 m Test-range  
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Keyword(6)  
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1st Author's Name Masataka Midori  
1st Author's Affiliation TDK Corporation (TDK)
2nd Author's Name Hiroshi Kurihara  
2nd Author's Affiliation TDK Corporation (TDK)
3rd Author's Name Takahiro Aoyagi  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
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Speaker Author-1 
Date Time 2013-05-10 09:30:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2013-11 
Volume (vol) vol.113 
Number (no) no.25 
Page pp.7-12 
#Pages 6 
Date of Issue 2013-05-03 (EMCJ) 

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