Toshitaka YAMAKAWA


Design and Experiments of a Novel Low-Ripple Cockcroft-Walton AC-to-DC Converter for a Coil-Coupled Passive RFID Tag
Toshitaka YAMAKAWA Takahiro INOUE Akio TSUNEDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/02/01
Vol. E91-A  No. 2  pp. 513-520
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
RFIDwireless power feedingAC-DC converterdiode charge pump
 Summary | Full Text:PDF

Design of a CMOS Heartbeat Spike-Pulse Detection Circuit Integrable in an RFID Tag for Heart Rate Signal Sensing
Toshitaka YAMAKAWA Takahiro INOUE Masayuki HARADA Akio TSUNEDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/06/01
Vol. E90-C  No. 6  pp. 1336-1343
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
RFIDCMOSheartbeatswitched capacitor
 Summary | Full Text:PDF

A Realization of a Common-Source FG-MOSFET with a Simple Electronic Vth Adjustment Almost Irrelevant to the Amount of the Pre-stored Charge on the Floating Gate
Takahiro INOUE Eizo ICHIHARA Toshitaka YAMAKAWA Akio TSUNEDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/03/01
Vol. E87-A  No. 3  pp. 753-756
Type of Manuscript:  LETTER
Category: Analog Signal Processing
Keyword: 
floating-gate MOSFETthreshold voltageVth adjustment
 Summary | Full Text:PDF