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Paper Abstract and Keywords
Presentation 2012-07-20 15:15
A radio-transmitter-design method for extremely small wireless sensor nodes
Kenichi Matsunaga, Shoichi Oshima, Mitsuru Harada (NTT) RCS2012-92
Abstract (in Japanese) (See Japanese page) 
(in English) This paper describes a design method for the wireless transmitter that enables wireless devices to be made much smaller and to be much more efficient. The problem with the small devices is the frequency mismatch between the small antenna and circuits that degrades efficiency, which is the ratio of the power fed to the antenna to total power consumption. By using feedback from the antenna to the circuits, we made automatic-frequency-adjusting oscillator and solved the problem. We simulated this transmitter architecture, and found the efficiency to be 24%. This result means the wireless circuit transmits 100 bits every 13 seconds.
Keyword (in Japanese) (See Japanese page) 
(in English) sensor node / miniaturization / feedback / antenna / oscillator / CMOS / wireless transmitter /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 132, RCS2012-92, pp. 103-108, July 2012.
Paper # RCS2012-92 
Date of Issue 2012-07-12 (RCS) 
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 RCS2012-92

Conference Information
Committee RCS NS USN  
Conference Date 2012-07-19 - 2012-07-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Iwate Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Fixed/Wireless Network, Hand Over, Relay, Distributed MIMO, Mobile Ad-hoc Network, Ubiquitous Sensor Network, etc. 
Paper Information
Registration To RCS 
Conference Code 2012-07-RCS-NS-USN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A radio-transmitter-design method for extremely small wireless sensor nodes 
Sub Title (in English)  
Keyword(1) sensor node  
Keyword(2) miniaturization  
Keyword(3) feedback  
Keyword(4) antenna  
Keyword(5) oscillator  
Keyword(6) CMOS  
Keyword(7) wireless transmitter  
Keyword(8)  
1st Author's Name Kenichi Matsunaga  
1st Author's Affiliation NTT Microsystem Integration Laboratories (NTT)
2nd Author's Name Shoichi Oshima  
2nd Author's Affiliation NTT Microsystem Integration Laboratories (NTT)
3rd Author's Name Mitsuru Harada  
3rd Author's Affiliation NTT Microsystem Integration Laboratories (NTT)
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Speaker Author-1 
Date Time 2012-07-20 15:15:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2012-92 
Volume (vol) vol.112 
Number (no) no.132 
Page pp.103-108 
#Pages 6 
Date of Issue 2012-07-12 (RCS) 

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