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Paper Abstract and Keywords
Presentation 2009-01-23 14:55
Reduction of Estimation Time for Distrubance Level Considering With Current and Magnetic-Current Source by Employing Majority decision
Masanori Kaneko, Nobuo Kuwabara (KIT), Yasuhiro Ishida (FITC) EMCJ2008-109
Abstract (in Japanese) (See Japanese page) 
(in English) The maximum value of radiated emission must be measured at a distance of 10m by the CISPR publications. However, the test facilities which can measure at a distance of 10m are too expensive. Therefore, methods have been studied to estimate radiated emissions at a distance of 10m from the measured data at a distance of 3m. The conventional estimation method considered with three components of current vectors and this need much estimation time. In this report, we propose the estimation method considering with current and magnetic-current sources, and this method can reduce the estimation time because the estimation parameters reduces from nine to five. The majority decision method was employed for reducing the estimation error by the local minimum solutions. The electric field at a distance of 10m was estimated to confirm the validity of the method. The imitated equipment was used instead of the EUT and the bi-log antenna was used as a receiving antenna. The output revels of the antenna at a distance of 3m were calculated by the method of moment, and they were used for the estimation. The estimating electric field strength at a distance of 10m was compared with the calculation results by the method of moment. The results indicated that the estimation time decreased two thirds, the deviation between the estimation value and the calculation value was 7 dB for the horizontal polarization and 10 dB for vertical polarization, and the method of majority decision did not improve the estimation accuracy.
Keyword (in Japanese) (See Japanese page) 
(in English) CISPR / Radiated emission / Far field estimation / Current source / Magnetic-current source / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 401, EMCJ2008-109, pp. 41-46, Jan. 2009.
Paper # EMCJ2008-109 
Date of Issue 2009-01-16 (EMCJ) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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Conference Information
Committee EMCJ  
Conference Date 2009-01-23 - 2009-01-23 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2009-01-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Reduction of Estimation Time for Distrubance Level Considering With Current and Magnetic-Current Source by Employing Majority decision 
Sub Title (in English)  
Keyword(1) CISPR  
Keyword(2) Radiated emission  
Keyword(3) Far field estimation  
Keyword(4) Current source  
Keyword(5) Magnetic-current source  
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1st Author's Name Masanori Kaneko  
1st Author's Affiliation Kyusyu Institute of Technology (KIT)
2nd Author's Name Nobuo Kuwabara  
2nd Author's Affiliation Kyusyu Institute of Technology (KIT)
3rd Author's Name Yasuhiro Ishida  
3rd Author's Affiliation Fukuoka Industrial Technology Center (FITC)
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Speaker Author-1 
Date Time 2009-01-23 14:55:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2008-109 
Volume (vol) vol.108 
Number (no) no.401 
Page pp.41-46 
#Pages
Date of Issue 2009-01-16 (EMCJ) 


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