Koji Obata

Publication Activity (10 Years)

Years Active: 2006-2016
Publications (10 Years): 3

Top Topics

Image Enhancement

Delta Sigma Modulators

Top Venues

IEEE J. Solid State Circuits

IEICE Trans. Fundam. Electron. Commun. Comput. Sci.

Publications

Koji Obata, Kazuo Matsukawa, Takuji Miki, Yusuke Tsukamoto, Koji Sushihara
A 97.99 dB SNDR, 2 kHz BW, 37.1 µW noise-shaping SAR ADC with dynamic element matching and modulation dither effect. VLSI Circuits (2016)
Takuji Miki, Takashi Morie, Kazuo Matsukawa, Yoji Bando, Takeshi Okumoto, Koji Obata, Shiro Sakiyama, Shiro Dosho
A 4.2 mW 50 MS/s 13 bit CMOS SAR ADC With SNR and SFDR Enhancement Techniques. IEEE J. Solid State Circuits 50 (6) (2015)
Jan Genoe, Koji Obata, Marc Ameys, Kris Myny, Tung Huei Ke, Manoj Nag, Soeren Steudel, Sarah Schols, Joris Maas, Ashutosh Tripathi, Jan-Laurens P. J. van der Steen, Tim Ellis, Gerwin H. Gelinck, Paul Heremans
Integrated Line Driver for Digital Pulse-Width Modulation Driven AMOLED Displays on Flex. IEEE J. Solid State Circuits 50 (1) (2015)
Jan Genoe, Koji Obata, Marc Ameys, Kris Myny, Tung Huei Ke, Manoj Nag, Soeren Steudel, Sarah Schols, Joris Maas, Ashutosh Tripathi, Jan-Laurens P. J. van der Steen, Tim J. Ellis, Gerwin H. Gelinck, Paul Heremans
30.2 Digital PWM-driven AMOLED display on flex reducing static power consumption. ISSCC (2014)
Kris Myny, Steve Smout, Maarten Rockele, Ajay Bhoolokam, Tung Huei Ke, Soeren Steudel, Koji Obata, B. M. Marín-Santibáñez, Duy-Vu Pham, Arne Hoppe, Aashini Gulati, F. Rodríguez González, Brian Cobb, Gerwin H. Gelinck, Jan Genoe, Wim Dehaene, Paul Heremans
ROM memory. ISSCC (2014)
Takashi Morie, Takuji Miki, Kazuo Matsukawa, Yoji Bando, Takeshi Okumoto, Koji Obata, Shiro Sakiyama, Shiro Dosho
A 71dB-SNDR 50MS/s 4.2mW CMOS SAR ADC by SNR enhancement techniques utilizing noise. ISSCC (2013)
Koji Obata, Kazuo Matsukawa, Yosuke Mitani, Masao Takayama, Yusuke Tokunaga, Shiro Sakiyama, Shiro Dosho
A Low Distortion 3rd-Order Continuous-Time Delta-Sigma Modulator for a Worldwide Digital TV-Receiver. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (2) (2012)
Kazuo Matsukawa, Koji Obata, Yosuke Mitani, Shiro Dosho
A 10 MHz BW 50 fJ/conv. continuous time ΔΣ modulator with high-order single opamp integrator using optimization-based design method. VLSIC (2012)
Masamitsu Tanaka, Koji Obata, Yuki Ito, Shota Takeshima, Motoki Sato, Kazuyoshi Takagi, Naofumi Takagi, Hiroyuki Akaike, Akira Fujimaki
Automated Passive-Transmission-Line Routing Tool for Single-Flux-Quantum Circuits Based on A* Algorithm. IEICE Trans. Electron. (4) (2010)
Kazuo Matsukawa, Yosuke Mitani, Masao Takayama, Koji Obata, Shiro Dosho, Akira Matsuzawa
A Fifth-Order Continuous-Time Delta-Sigma Modulator With Single-Opamp Resonator. IEEE J. Solid State Circuits 45 (4) (2010)
Kazuo Matsukawa, Yosuke Mitani, Masao Takayama, Koji Obata, Yusuke Tokunaga, Shiro Sakiyama, Shiro Dosho
-order Continuous Time Delta-Sigma Modulator with an Ultimate Low Power Tuning System for a Worldwide Digital TV-Receiver. CICC (2010)
Kazuo Matsukawa, Takashi Morie, Yusuke Tokunaga, Shiro Sakiyama, Yosuke Mitani, Masao Takayama, Takuji Miki, Akinori Matsumoto, Koji Obata, Shiro Dosho
Design methods for pipeline & delta-sigma A-to-D converters with convex optimization. ASP-DAC (2009)
Koji Obata, Kazuyoshi Takagi, Naofumi Takagi
A Clock Scheduling Algorithm for High-Throughput RSFQ Digital Circuits. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (12) (2008)
Koji Obata, Kazuyoshi Takagi, Naofumi Takagi
Logic Synthesis Method for Dual-Rail RSFQ Digital Circuits Using Root-Shared Binary Decision Diagrams. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2007)
Koji Obata, Kazuyoshi Takagi, Naofumi Takagi
A Method of Sequential Circuit Synthesis Using One-Hot Encoding for Single-Flux-Quantum Digital Circuits. IEICE Trans. Electron. (12) (2007)
Shigeru Yamashita, Katsunori Tanaka, Hideyuki Takada, Koji Obata, Kazuyoshi Takagi
A transduction-based framework to synthesize RSFQ circuits. ASP-DAC (2006)