Yuya Maekawa, Hiroki Ishikuro, “An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit ΔΣ DAC” presented at 2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS), Dubai, United Arab Emirates, 28 November 2021 – 01 December 2021
Yi Tan and Hiroki Ishikuro, “A Switched-Capacitor DC-DC Converter with > 77.3% Efficiency and 80 ns Active Transient Response in 40 μA – 4 mA Load Current Range,” IEEE 47th European Solid-State Circuits Conference (ESSCIRC), Sept. 13-17, 2021.
Yuya Fuketa, Kohei Tatehora, Yohsuke Shiiki, Shuya Nakagawa, and Hiroki Ishikuro, “A Fast Wake-Up and High Accuracy Sensor Interface by Synchronous Sampling with Power-Efficient Switching Regulator,” 2021 IEEE 64th International Midwest Symposium on Circuits and Systems (MWSCAS), Aug. 9-11, 2021.
Peter Toth and Hiroki Ishikuro, “An up to 35dBc/Hz Phase Noise Improving Design Methodology for Differential-Ring-Oscillators Applied in Ultra-Low Power Systems,” 26th Asia and South Pacific Design Automation Conference (ASP-DAC), pp. 9-10, Jan., 2021.
Yi Tan, Yohsuke Shiiki, and Hiroki Ishikuro, “Gate Voltage Optimization in Capacitive DC-DC Converters for Thermoelectric Energy Harvesting,” 26th Asia and South Pacific Design Automation Conference (ASP-DAC), pp. 11-12, Jan., 2021.
Peter Toth and Hiroki Ishikuro, “An 18 Bit Time-to-Digital Converter Design with Large Dynamic Range and Automated Multi-Cycle Concept,” 26th Asia and South Pacific Design Automation Conference (ASP-DAC), pp. 105-106, Jan., 2021.
Yuya Maekawa, Syuya Nakagawa, and Hiroki Ishikuro, “A Highly Linear Amp-Less Interface Circuit for Capacitive Sensors with ΔΣ C-DAC,” 2020 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), Dec., 2020
Shuya Nakagawa, Takumi Miyazaki, and Hiroki Ishikuro, “A High-Resolution Oscillator Based Resistance-to-Digital Converter with Non-Linearity Canceling Feedback by ΔΣ Modulated Variable Resistor,” 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Oct., 2020
K. Tatehora, Y. Shiiki, S. Nakagawa, T. Tanaka, K. Uchida, and H. Ishikuro, “A Wide Range and High Accuracy Sensor Interface with Switching Regulator for Coin-Cell Powered Tiny Wireless Sensor Node,” 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Oct., 2020
Yi Tan, Yohsuke Shiiki, and Hiroki Ishikuro, “A 0.12V Fully Integrated Charge Pump with Gate Voltage Optimization for Energy Harvesting Applications,” 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Oct., 2020
