Keisuke OKUNO


A Fast Settling All Digital PLL Using Temperature Compensated Oscillator Tuning Word Estimation Algorithm
Keisuke OKUNO Shintaro IZUMI Kana MASAKI Hiroshi KAWAGUCHI Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/12/01
Vol. E98-A  No. 12  pp. 2592-2599
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Circuit Design
Keyword: 
ADPLLfast settlingdigital calibrationtiming error correctiontemperature compensation
 Summary | Full Text:PDF

Low-Jitter Design for Second-Order Time-to-Digital Converter Using Frequency Shift Oscillators
Keisuke OKUNO Toshihiro KONISHI Shintaro IZUMI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/07/01
Vol. E98-A  No. 7  pp. 1475-1481
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
TDCFSOjitterdesign methodology
 Summary | Full Text:PDF

An I/O-Sized ADC with Second-Order TDC and MOM Capacitor Voltage-to-Time Converter
Keisuke OKUNO Toshihiro KONISHI Shintaro IZUMI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/06/01
Vol. E98-C  No. 6  pp. 489-495
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
ADCI/O-sizeVTCMOM capacitance
 Summary | Full Text:PDF

A Second-Order All-Digital TDC with Low-Jitter Frequency Shift Oscillators and Dynamic Flipflops
Toshihiro KONISHI Keisuke OKUNO Shintaro IZUMI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/04/01
Vol. E96-C  No. 4  pp. 546-552
Type of Manuscript:  Special Section PAPER (Special Section on Solid-State Circuit Design—Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
ADCTDCoscillatordigital circuitadaptive LMS filtering
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An Opampless Second-Order MASH ΔΣ ADC with Using Gated Ring Oscillator Time-to-Digital Converter
Toshihiro KONISHI Keisuke OKUNO Shintaro IZUMI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/02/01
Vol. E96-A  No. 2  pp. 434-442
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
ADCTDCoscillatornoise-shapinglow-powersmall areaprocess scalable
 Summary | Full Text:PDF