I am Keisuke Kawahara, an Assistant Professor at Institute of Science Tokyo (formerly Tokyo Institute of Technology), Japan. My interests include high-speed electornic and photonic integrated circuit design.
0.78-pJ/bit optical transmitter for multi-terabit co-packaged optics enabled by electronics-photonic co-design. 📄IEEE JSTQE (🔓) 📄OECC PDP
Achieving record low-power Si slow-light modulator by optimizing the electrode impedance. 📄Optica (🔓) 📄OFC
World's first demonstration of bandwidth tripling of digital-to-analog converters. 📄IEEE T-MTT 📄IEEE RWS
Imbalance correction and bandwidth extension are simultaneously achieved by an active feedback technique. 📄IEEE TCAS-I 📄IEEE MWSCAS
Coupled inductors halve the chip footprint of a differential distributed amplifier. 📄IEICE TREL (🔓) 📄IEEE ISCAS
The trimless temperature sensor is based on an open-source design rule and is freely reusable. GitHub Repository
The class-AB CMOS operational amplifier consumes only 7.7 µA and provides a slew rate of 1 V/µs for a 1-nF load. Slides for 2021 and 2020