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Paper Abstract and Keywords
Presentation 2012-08-03 14:00
[Invited Talk] High Efficient, Fast Load Tacking, Low EMI Wireless Power Delivery Circuits for Non-contact Memory Card
Hiroki Ishikuro, Ryota Shinoda, Kazutoshi Tomita, Yuya Hasegawa (Keio Univ.) SDM2012-84 ICD2012-52
Abstract (in Japanese) (See Japanese page) 
(in English) Watt-class wireless power delivery system for SD card size large volume memory card was developed. Fast load tracking technique is essential because the small size memory card can not contain a battery and the load changes rapidly depending on the operation mode of the memory card. Delta-sigma modulated sub-harmonic switching technique was proposed to realize a high efficient and high-speed power control with low electro-magnetic interference (EMI). Test chips were designed and fabricated using 0.18mm-CMOS with high voltage (32V) LDMOS option and power delivery of 0.5W/chip was achieved. The transmitting power was able to be controlled over one order of magnitude while keeping high efficiency. 3.3% load regulation was achieved and reduction of unwanted spurious emission by 8dB was confirmed by the delta-sigma modulation of control signal of switching frequency.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless power delivery / electromagnetic induction / sub-harmonic / memory card / low EMI / fast load tracking / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 170, ICD2012-52, pp. 115-120, Aug. 2012.
Paper # ICD2012-52 
Date of Issue 2012-07-26 (SDM, ICD) 
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)
Download PDF SDM2012-84 ICD2012-52

Conference Information
Committee ICD SDM  
Conference Date 2012-08-02 - 2012-08-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Sapporo Center for Gender Equality, Sapporo, Hokkaido 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Low-power, low-voltage device and circuit technology 
Paper Information
Registration To ICD 
Conference Code 2012-08-ICD-SDM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) High Efficient, Fast Load Tacking, Low EMI Wireless Power Delivery Circuits for Non-contact Memory Card 
Sub Title (in English)  
Keyword(1) Wireless power delivery  
Keyword(2) electromagnetic induction  
Keyword(3) sub-harmonic  
Keyword(4) memory card  
Keyword(5) low EMI  
Keyword(6) fast load tracking  
Keyword(7)  
Keyword(8)  
1st Author's Name Hiroki Ishikuro  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Ryota Shinoda  
2nd Author's Affiliation Keio University (Keio Univ.)
3rd Author's Name Kazutoshi Tomita  
3rd Author's Affiliation Keio University (Keio Univ.)
4th Author's Name Yuya Hasegawa  
4th Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2012-08-03 14:00:00 
Presentation Time 40 minutes 
Registration for ICD 
Paper # SDM2012-84, ICD2012-52 
Volume (vol) vol.112 
Number (no) no.169(SDM), no.170(ICD) 
Page pp.115-120 
#Pages 6 
Date of Issue 2012-07-26 (SDM, ICD) 

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