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Paper Abstract and Keywords
Presentation 2004-10-01 10:30
Equivalent Inductance of Power-Distribution Planes in Multilayer PCBs and Capacitor Allocation to Reduce EMI
Takashi Harada, Naoki Kobayashi (NEC)
Abstract (in Japanese) (See Japanese page) 
(in English) The dependence of voltage disturbances between the power-distribution planes to allocation of a capacitor nearby the via is investigated. Power-distribution plane voltages in multi-layer printed circuit boards (PCBs) are one of the main sources of electro-magnetic interference (EMI). Via penetrating through the power and ground planes gives a rise to the voltage disturbance between these two planes. Voltage reduction effectiveness to allocate a decoupling capacitor is evaluated quantitatively by using an equivalent circuit model. Calculated results have showed the optimized capacitor allocation. A simple analytical formulation has also been introduced about the relation between the space of the power-distribution planes and the distance from the via to the decoupling capacitor in order to determine disturbances of power distribution planes within certain thresholds. Design rule for allocations of decoupling capacitors is also described.
Keyword (in Japanese) (See Japanese page) 
(in English) Multilayer PCB / Power-distribution planes / Decoupling capacitor / / / / /  
Reference Info. IEICE Tech. Rep., vol. 104, no. 328, EMCJ2004-58, pp. 17-21, Oct. 2004.
Paper # EMCJ2004-58 
Date of Issue 2004-09-24 (EMCJ) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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Conference Information
Committee EMCJ  
Conference Date 2004-10-01 - 2004-10-01 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To EMCJ 
Conference Code 2004-10-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Equivalent Inductance of Power-Distribution Planes in Multilayer PCBs and Capacitor Allocation to Reduce EMI 
Sub Title (in English)  
Keyword(1) Multilayer PCB  
Keyword(2) Power-distribution planes  
Keyword(3) Decoupling capacitor  
1st Author's Name Takashi Harada  
1st Author's Affiliation NEC Corporation (NEC)
2nd Author's Name Naoki Kobayashi  
2nd Author's Affiliation NEC Corporation (NEC)
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Date Time 2004-10-01 10:30:00 
Presentation Time 25 
Registration for EMCJ 
Paper # IEICE-EMCJ2004-58 
Volume (vol) IEICE-104 
Number (no) no.328 
Page pp.17-21 
#Pages IEICE-5 
Date of Issue IEICE-EMCJ-2004-09-24 

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