Researchers

2023

Tanabe, S.; Tanzawa, T. Battery-Assisted Battery Charger with Maximum Power Point Tracking for Thermoelectric Generator: Concept and Experimental Proof. Electronics 2023, 12, 4102.
S. Tanabe, Y. Sakamoto, H. Uchida, T. Tanzawa, “A Hybrid Thermoelectric Generator – Battery Power Supply System Toward Replacement-Free Battery”, IEEE 11th International Conference on Power Electronics – ECCE Asia, pp. 1817 – 1822, May 2023.

2022


T. Hashimoto, A −31.7 dBm Sensitivity 0.011 mm2 CMOS On-Chip Rectifier for Microwave Wireless Power Transfer, Electronics , 12(6), 1400 (2023)
K. Nono, One-Dimensional Maximum Power Point Tracking Design of Switched-Capacitor Charge Pumps for Thermoelectric Energy Harvesting, Electronics, 12(5), 1203, 2023.
H. Makino, A 30% Power Reduction Circuit Design for NAND Flash by Utilizing 1.2V I/O Power Supply to Bitline Path, IEEE the 18th Asia Pacific Conference on Circuits and Systems (APCCAS), Nov. 2022.
T. Hashimoto, Design Space Exploration of Antenna Impedance and On-Chip Rectifier for Microwave Wireless Power Transfer, Electronics , 11/19, 3218 (2022)
T. Nomura, More Enhanced Swing Colpitts Oscillators: A Circuit Analysis, Electronics , 11/18, 2808 (2022)
T. Hashimoto, Antenna/On-Chip-Rectifier Co-Design Methodology for Micro-Watt Microwave Wireless Power Transfer, 65th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS 2022).
J. Kondo, Pre-Emphasis Pulse Design for Reducing Bit-Line Access Time in NAND Flash Memory, Electronics 11/13 1926 (2022)
Y. Demura, Design of Switched-Capacitor DC-DC Voltage-Down Converters Driven by Highly Resistive Energy Transducer, Electronics 11/12, 1874 (2022)

2021

J. Kondo, Pre-emphasis pulse design for ABL sensing of NAND, IEICE general conference, C-12-8, Mar. 2022. (In Japanese)
Y. Kanayama, Ramp-up performance limit of boost converters, IEICE general conference, C-12-23, Mar. 2022. (In Japanese)
R. Kotsubo, Modeling of Latched RF-DC Converters, IEICE general conference, C-12-19, Mar. 2022. (In Japanese)
Y. Kotoya, Regulator design for resonator-oscillator-rectifier booster, IEICE general conference, C-12-22, Mar. 2022. (In Japanese)
S. Tanabe, Modeling of Buck converter for TEG-Battery hybrid system, IEICE general conference, C-12-20, Mar. 2022. (In Japanese)
Y. Demura, Design of switched-capacitor DC-DC converters driven by transducers with high output impedance, IEICE general conference, C-12-21, Mar. 2022. (In Japanese)
Y. Tone, “An Optimum Structure of Scalable Capacitors in 3D Crosspoint Memory Technology”, Electronics 2021, 10(22), 2755; https://doi.org/10.3390/electronics10222755.
K. Nono, A Design of Charge Pump System with Maximum Power Point Tracking for Low Cost Thermoelectric Energy Harvesting, IEICE society conf., C-12-3, Sep. 2021. (In Japanese)
T. Hashimoto, An Optimum Design of Antenna and On-chip Rectifier for Micro-watt Microwave Wireless Power Transfer, IEICE society conf., C-2-19, Sep. 2021. (In Japanese)
H. Makino, A Low Power Design for NAND Flash with 1.2V I/O Power Supply, IEICE society conf., C-12-21, Sep. 2021. (In Japanese)
Y. Sakamoto, A Design of DC-DC Converter for Thermoelectric Energy Harvesting with Battery Backup, IEICE society conf., C-12-1, Sep. 2021.
T. Nomura, Self-oscillator-based DC-DC converter
Y. Ishida, “Design of interface circuits fabricated in 1V CMOS for electrostatic energy transducer with an open circuit voltage over 10V,” IEICE Technical Committee Conference on Integrated Circuits and Devices, Aug. 2021. (In Japanese)

Y. Sugiura, “Pre-Emphasis Pulse Design for Random-Access Memory,” Electronics 2021, 10(12), 1454; doi: 10.3390/electronics10121454
K. Koketsu, “Design of a Charge Pump Circuit and System with Input Impedance Modulation for a Flexible-Type Thermoelectric Generator with High-Output Impedance,” Electronics 2021, 10(10), 1212; doi: 10.3390/electronics10101212
Y. Ishida, “A Fully Integrated AC-DC Converter in 1 V CMOS for Electrostatic Vibration Energy Transducer with an Open Circuit Voltage of 10 V,” Electronics 2021, 10(10), 1185; DOI: 10.3390/electronics10101185
K. Matsuyama, “A Circuit Analysis of Pre-Emphasis Pulses for RC Delay Lines,” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E104-A, No. 6, pp. 912-926, Jun. 2021.

2020
Y. Tone, “A Design Guideline of Scalable Capacitors in 3D Cross-Point Memory”, IEICE general conference, C-12-31, Mar. 2021.
K. Nono, “A Design of Adaptive Charge Pumps with Minimum Circuit Area for Thermoelectric Energy Harvesting under Temperature Variations”, IEICE general conference, C-12-27, Mar. 2021.
T. Hashimoto, “A Study on the Fundamental Limit of Integrated Rectifiers for Low Cost Microwave Wireless Power Transfer”, IEICE general conference, C-2-6, Mar. 2021.
H. Makino, “A Study of Sensing Schemes for NAND Flash: Shielded Bit-Line vs. All Bit-Line”, IEICE general conference, C-12-32, Mar. 2021.
H. Kawauchi, “A Fully Integrated Clocked AC-DC Charge Pump for Magnetostrictive Vibration Energy Harvesting”, Electronics, 9(12), pp. 2194, 2020. doi:10.3390/electronics9122194.
J. Ye, “An Optimum Design of Clocked AC-DC Charge Pump Circuits for Vibration Energy Harvesting,” Electronics, 9(12), pp. 2031, 2020. doi.org/10.3390/electronics9122031.
Y. Sakamoto, “An Experimental Study of Power Converter System with Battery and Thermoelectric Energy Transducer Connected in Series,” IEICE society conf., C-12-9, Sep. 2020.
T. Nomura, “An optimum design of self-oscillator-based DC-DC converter”
K. Koketsu, “A Design of Cold Start Charge Pump for Flexible Thermoelectric Generator with High Output Impedance,” IEEE ICECS, Nov. 2020.
Y. Tabuchi, “Rectenna with Serially Connected Diodes for Micro-watt Energy Harvesting,” WPTC, Nov. 2020.
Y. Ishida, “A process- and temperature- tolerant fully integrated shunt regulator,” IEICE society conf., C-12-8, Sep. 2020.
K. Koketsu, “A Control Circuit Design of Power Converter with Time-Division Input Impedance Modulation for Energy Transducer with High Output Impedance,” IEICE Technical Committee Conference on Integrated Circuits and Devices, Aug. 2020. (In Japanese)
Y. Tabuchi, “Mapping of Optimum Circuit Topology for Micro-Watt Rectenna in Output Voltage-Current Plane,” IEICE society conf., C-2-11, Sep. 2020.
2019
A. Ballo, “Linear distribution of capacitance in Dickson charge pumps to reduce rise time,” International Journal of Circuit Theory & Applications, Jan. 2020. Link
Y. Sakamoto, “A Power Converter System for Energy Harvesting Toward Zero Net Battery Power,” IEICE general conference, C-12-20, Mar. 2020.
Y. Sugiura, Pre-Emphasis Pulse Design for Random Access Memory, IEICE general conference, C-12-12, Mar. 2020.
T. Nomura, “A Double Resonant Enhanced Swing Colpitts Oscillator for Extremely Low-Voltage DC/DC Boost Conversion,” IEICE general conference,  C-12-18, Mar. 2020.
J. Ye, “An Optimum Circuit Design of clocked AC-DC charge pumps,” IEICE general conference, C-12-19, Mar. 2020.
Y. Ishida, AC-DC converter design for electrostatic vibration energy harvesting
K. Koketsu, DC-DC converter design for thermoelectric generator
Y. Tabuchi, Rectenna design for wireless power transmission
Y. Yamazaki, “A Design Window for Device Parameters of Rectifying Diodes in 2.4 GHz Micro-watt RF Energy Harvesting,” IEEE APMC, Dec. 2019.
H. Kawauchi, “A 2V 3.8μW Fully-Integrated Clocked AC-DC Charge Pump with 0.5V 500Ω Vibration Energy Harvester,” IEEE APCCAS, 5098, Nov. 2019.
K. Matsuyama, “A Pre-Emphasis Pulse Generator Insensitive to Process Variation for Driving Large Memory and Panel Display Arrays with Minimal Delay Time,” IEEE APCCAS, 5097, Nov. 2019.
K. Matsuyama, “Design of Pre-Emphasis Pulses for Large Memory Arrays with Minimal Word-Line Delay Time”, IEEE ISCAS, B1L-H-4, May 2019.
S. Tokuda, “Toward a minimum-operating-voltage design of DC-DC charge pump circuits for energy harvesting”, IEEE ISCAS, C5L-K-5, May 2019.

2018
Y. Ishida, “A Design of AC-DC Converters Fully Integrated in Standard CMOS for Electrostatic Vibration Energy Harvesting,” IEICE general conference, C-12-3, Mar. 2019.
K. Koketsu, “An Optimum Design of Thermal Energy Transducers and Power Converters for Small Form-Factor Thermoelectric Energy Harvester,” IEICE general conference, C-12-4, Mar. 2019.
Y. Tabuchi, “An Optimum Design of Micro-watt RF Energy Harvesters with RF-DC and DC-DC Conversions,” IEICE general conference, C-2-11, Mar. 2019.
Y. Yamazaki, “A Sensitivity Analysis of Power Conversion Efficiency of Rectifying Diodes on Their Device Parameters for Microwatt RF Energy Harvesting,” IEICE general conference, C-2-12, Mar. 2019.
H. Kawauchi, A system design of clocked AC-DC converter for vibration energy harvesting, IEICE society conference, C-12-9, Sep. 2018.
K. Matsuyama, Formulation of minimal delay time with pre-emphasis pulses for dense parallel RC lines, IEICE society conference, C-12-5, Sep. 2018.

2017
H. Kawauchi, “A clocked AC-DC voltage multiplier for increasing the power conversion efficiency in vibration energy harvesting”, IEICE general conference, C-12-16, Mar. 2018.
Y. Kawakami, “An analysis on lower bounds of supply voltages for enhanced-swing Colpitts oscillators”, IEICE general conference, C-12-17, Mar. 2018.
S. Tokuda, “Toward a minimum-operating-voltage design of DC-DC charge pump circuits for energy harvesting”, IEICE general conference, C-12-18, Mar. 2018.
K. Matsuyama, “A closed-form expression for pre-emphasis pulses with minimal RC delay time”, IEICE general conference, C-12-35, Mar. 2018.

 

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