Peter Toth and Hiroki Ishikuro, “A Differential-Ring-Oscillator with up to 35 dBc/Hz Phase Noise Improving Amplitude Feedback Loop for Ultra Low Power Systems,” 2019 26th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Nov., 2019

Yohsuke Shiiki and Hiroki Ishikuro, “A High Accuracy Opamp-less Interface Circuit for 2-D Cross-Point Resistive Sensor Array with Switch Resistance Calibration,” 2019 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), Nov., 2019

T. Tanaka, K. Tabuchi, K. Tatehora, Y. Shiiki, S. Nakagawa, T. Takahashi, R. Shimizu, H. Ishikuro, T. Kuroda, T. Yanagida, and K. Uchida,” Low-Power and ppm-Level Detection of Gas Molecules by Integrated Metal Nanosheets,” 2019 Symposium on VLSI Circuits, June, 2019

Yohsuke Shiiki, Hiroki Ishikuro, “Interface with Opamp Output-Impedance Calibration Technique for a Large Integrated 2-D Resistive Sensor Array,” 2019 IEEE International Symposium on Circuits and Systems (ISCAS), May 2019

Yusuke Inada, Toru Kawajiri, Ukyo Takeda, and Hiroki Ishikuro, “Arbitrary Magnetic Field Control Technique by Multi-Coil Transmitter Voltage Phase Shifting for Omni-Directional Free-Positioning Magnetic Resonance Wireless Power Delivery,” 48th European Microwave Conference (EuMC), pp.186-189, Sept. 2018.

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.