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Paper Abstract and Keywords
Presentation 2007-12-10 10:20
Advanced Low Power Long Distance RF-Tag Systems by Using Modulated Subcarrier Wave
Hitoshi Kitayoshi, Kunio Sawaya (Tohoku Univ.) SIS2007-47
Abstract (in Japanese) (See Japanese page) 
(in English) Novel semi-passive sensor RF-tags for a low power consumption and a long reading range are proposed. Tags are composed of a sensor, a wearable cavity-backed slot antenna, a resonant short stub circuit for boosting the rectified DC voltage and a pulse key detector for the wake up operation. Subcarrier multilevel phase shift keying (MPSK) is employed for continuous data communications and distance measurement, is proposed. Experimental study of fabricated semi-passive RF-tags, i.e., tags for distance measurement, tri-axial acceleration sensor and electrocardiographic monitor, is presented, in which 35 m range response can be achieved in the 3mW/MHz ARIB STD-T81 reader at 2.45 GHz band. Current requirements of battery in these tags are 10uA (20sps), 633uA (350sps) and 583uA (350sps), respectively, which are much smaller than conventional active RF-tags.
Keyword (in Japanese) (See Japanese page) 
(in English) RF-tag / low power consumption / wearable antenna / subcarrier MPSK / voltage step up circuit by resonant stub / pulse key detector / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 373, SIS2007-47, pp. 13-18, Dec. 2007.
Paper # SIS2007-47 
Date of Issue 2007-12-03 (SIS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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Conference Information
Committee SIS  
Conference Date 2007-12-10 - 2007-12-11 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To SIS 
Conference Code 2007-12-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Advanced Low Power Long Distance RF-Tag Systems by Using Modulated Subcarrier Wave 
Sub Title (in English)  
Keyword(1) RF-tag  
Keyword(2) low power consumption  
Keyword(3) wearable antenna  
Keyword(4) subcarrier MPSK  
Keyword(5) voltage step up circuit by resonant stub  
Keyword(6) pulse key detector  
Keyword(7)  
Keyword(8)  
1st Author's Name Hitoshi Kitayoshi  
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2nd Author's Name Kunio Sawaya  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker
Date Time 2007-12-10 10:20:00 
Presentation Time 40 
Registration for SIS 
Paper # IEICE-SIS2007-47 
Volume (vol) IEICE-107 
Number (no) no.373 
Page pp.13-18 
#Pages IEICE-6 
Date of Issue IEICE-SIS-2007-12-03 


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