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Paper Abstract and Keywords
Presentation 2007-07-26 16:05
A 356-µW, 433-MHz, Rail-to-Rail Voltage Amplifier with Carrier Sensing Function for Wireless Sensor Networks
Hyeokjong Lee, Shinji Mikami, Takashi Takeuchi, Masumi Ichien, Hiroshi Kawaguchi, Chikara Ohta, Masahiko Yoshimoto (Kobe Univ.) ICD2007-50 Link to ES Tech. Rep. Archives: ICD2007-50
Abstract (in Japanese) (See Japanese page) 
(in English) We describe a low-power voltage amplifier that is suitable for RF (radio frequency) receivers in a WSN (wireless sensor network). Since a sensor node has a strict energy budget in a WSN, it often enters itself into a standby mode when no communication is required, and hence a standby power have to be suppressed as well as an active power in order to maximize a lifetime of a WSN. For this sake, it is effective to reduce an RF block’s power in a sensor node because it is the major power-consuming block. We propose a simple rail-to-rail voltage amplifier with low-standby-power and low-active-power capabilities that is suitable to a subsequent digital interface. The target frequency is set to 433 MHz,and the voltage gain achieves 26 dB. The standby and active powers are 24 nW and 356 µW,which are lower than the conventional inverter-type voltage amplifier by 86% and 46%,respectively. The proposed amplifier features a carrier sensing function in addition to the low-power operation since it has a minimum input amplitude to be amplified. By using this function,we can set a carrier sensing level as a threshold level,which is important to avoid collisions and interferences in a WSN that cause needless communications.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless sensor network / voltage amplifier / carrier sense / on-off keying / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 163, ICD2007-50, pp. 77-82, July 2007.
Paper #  
Date of Issue 2007-07-19 (ICD) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ICD2007-50 Link to ES Tech. Rep. Archives: ICD2007-50

Conference Information
Committee ICD ITE-IST  
Conference Date 2007-07-26 - 2007-07-27 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ITE-IST 
Conference Code 2007-07-ICD-ITE-IST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A 356-µW, 433-MHz, Rail-to-Rail Voltage Amplifier with Carrier Sensing Function for Wireless Sensor Networks 
Sub Title (in English)  
Keyword(1) Wireless sensor network  
Keyword(2) voltage amplifier  
Keyword(3) carrier sense  
Keyword(4) on-off keying  
1st Author's Name Hyeokjong Lee  
1st Author's Affiliation Kobe University (Kobe Univ.)
2nd Author's Name Shinji Mikami  
2nd Author's Affiliation Kobe University (Kobe Univ.)
3rd Author's Name Takashi Takeuchi  
3rd Author's Affiliation Kobe University (Kobe Univ.)
4th Author's Name Masumi Ichien  
4th Author's Affiliation Kobe University (Kobe Univ.)
5th Author's Name Hiroshi Kawaguchi  
5th Author's Affiliation Kobe University (Kobe Univ.)
6th Author's Name Chikara Ohta  
6th Author's Affiliation Kobe University (Kobe Univ.)
7th Author's Name Masahiko Yoshimoto  
7th Author's Affiliation Kobe University (Kobe Univ.)
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Date Time 2007-07-26 16:05:00 
Presentation Time 25 
Registration for ITE-IST 
Paper # IEICE-ICD2007-50 
Volume (vol) IEICE-107 
Number (no) no.163 
Page pp.77-82 
#Pages IEICE-6 
Date of Issue IEICE-ICD-2007-07-19 

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