A 0.00027 mm2 1.2V 0.089pJ/bit 10Gbps 41.6 GHz Standard-Cell-Based Passive-Less Wireless OOK Transmitter with On-Chip Antenna in 12nm FinFET. - Hiroaki Kitaike; Hironori Tagawa; Masaya Kaneko; Jin Nakamura; Shufan Xu; Ruilin Zhang; Kunyang Liu; Hiroki Wakatsuchi; Kyoya Takano; Hirofumi Shinohara; Kiichi Niitsu (NorCAS, 2024)

A 2 Hz, 1.2-2 V, 0.22-9 nW, 0.007 mm2 65 nm CMOS Multiple- Output Down-Converter-Less Clock Generator Using Stacked an Oscillator and Frequency Dividers for Scaling-Friendly IoTs. - You Wu; Kei Awano; Kento Okamura; Teruaki Ono; Kohei Sakamoto; Hiroaki Kitaike; Hironori Tagawa; Jin Nakamura; Masaya Kaneko; Yuta Kimura; Hiroaki Nakamura; Shufan Xu; et al. (NorCAS, 2024)

A 0.9-2.6pW 0.1-0.25V 22nm 2-bit Supply-to-Digital Converter Using Always-Activated Supply-Controlled Oscillator and Supply-Dependent-Activation Buffers for Bio-Fuel-Cell-Powered-and-Sensed Time-Stamped Bio-Recording. - Hiroaki Kitaike; Masaharu Inada; Mitsuru Terauchi; Hironori Tagawa; Ryosuke Nagai; Shufan Xu; Ruilin Zhang; Kunyang Liu; Kiichi Niitsu (VLSI Technology and Circuits, 2024)

Design of 0.9-2.6pW 0.1-0.25V 22nm 2-bit Supply-to-Digital Converter Using Always-Activated Supply-Controlled Oscillator and Supply-Dependent-Activation Buffers for Bio-Fuel-Cell-Powered-and-Sensed Time-Stamped Bio-Recording. - Hiroaki Kitaike; Hironori Tagawa; Shufan Xu; Ruilin Zhang; Kunyang Liu; Kiichi Niitsu (ASP-DAC, 2025)

A 22 nm CMOS 0.034 mm2 0.4 V 1.3 nW Frequency-Recording IC with 400-Bit Data-Storing Shift Registers Using Burst-Pulse Counting and Reference Pulse Generation for Stand-Alone Continuous Glucose Monitoring Contact Lenses. - Kei Awano; You Wu; Kento Okamura; Teruaki Ono; Kohei Sakamoto; Hiroaki Kitaike; Hironori Tagawa; Jin Nakamura; Masaya Kaneko; Yuta Kimura; Hiroaki Nakamura; Shufan Xu; et al. (LASCAS, 2025)

A 22 nm CMOS .000005 text{mm}^{2} 0.25 mathrm{V}$ 2.3pW ISFET Front-End Using Low-Gate-Leakage Thick-Gate-Oxide Transistors for Energy-Efficient Small-Formfactor pH Monitoring. - Hiroaki Kitaike; Ruilin Zhang; Hironori Tagawa; Kento Okamura; Kei Awano; You Wu; Teruaki Ono; Kohei Sakamoto; Jin Nakamura; Masaya Kaneko; Kunyang Liu; Shufan Xu; et al. (NewCAS, 2025)