Makoto Takamiya

154 papers A* 2A 9C 3Journal 69Unranked 71
YearRankTypeTitle / Venue / Authors
2025 J jnl
Serial-Stacked Single-Inductor Dual-Source Triple-Output Energy Harvesting Interface With 2D-MPPT for Battery-Free IoT Devices.
IEEE Trans. Circuits Syst. I Regul. Pap.
Yen-Yun Huang, Makoto Takamiya, Po-Hung Chen
2024 J jnl
A 6.78-MHz Coupling Coefficient Sensorless Wireless Power Transfer System Charging Multiple Receivers With Efficiency Maximization by Adaptive Magnetic Field Distributor IC.
IEEE Trans. Circuits Syst. I Regul. Pap.
Hao Qiu, Xusheng Zhang, Junji Chen, Makoto Takamiya, Yi Shi
2024 J jnl
Estimating of IGBT Bond Wire Lift-Off Trend Using Convolutional Neural Network (CNN).
IEEE Access
Thatree Mamee, Zaiqi Lou, Katsuhiro Hata, Makoto Takamiya, Takayasu Sakurai, Shinichi Nishizawa, Wataru Saito
2024 J jnl
Ultrahigh framerate vision chip featuring central-based edge detection processed by all-digital in-imager global-parallel processing architecture.
IEICE Electron. Express
Ruizhi Wang, Yaogan Liang, Makoto Takamiya
2023 J jnl
A 10.5 W, 93% Efficient Dual-Path Hybrid (DPH)-Based DC-DC Converter Incorporating a Continuous-Current-Input Switched-Capacitor Stage and Enhanced I
IEEE Trans. Circuits Syst. I Regul. Pap.
Qiaobo Ma, Xiongjie Zhang, Anyang Zhao, Huihua Li, Yang Jiang, Man-Kay Law, Makoto Takamiya, Rui Paulo Martins, Pui-In Mak
2023 J jnl
A 6.78-MHz Wireless Power Transfer System With Dual-Output Resonant Current-Mode Regulating Rectifier and Transmission Power Regulation.
IEEE Trans. Circuits Syst. I Regul. Pap.
Dao-Han Yao, Tzu-Ning Liu, Makoto Takamiya, Po-Hung Chen
2023 — conf
Digital Gate ICs for Driving and Sensing Power Devices to Achieve Low-Loss, Low-Noise, and Highly Reliable Power Electronic Systems.
CICC
Dibo Zhang, Kohei Horii, Katsuhiro Hata, Makoto Takamiya
2023 J jnl
Floating-Domain Integrated GaN Driver Techniques for DC-DC Converters: A Review.
IEEE Trans. Circuits Syst. I Regul. Pap.
Xuchu Mu, Guangshu Zhao, Anyang Zhao, Yang Jiang, Man-Kay Law, Makoto Takamiya, Pui-In Mak, Rui Paulo Martins
2023 J jnl
IGBT Power Module Design for Suppressing Gate Voltage Spike at Digital Gate Control.
IEEE Access
Zaiqi Lou, Thatree Mamee, Katsuhiro Hata, Makoto Takamiya, Shinichi Nishizawa, Wataru Saito
2023 J jnl
Integrated Imager and 3.22 μs/Kernel-Latency All-Digital In-Imager Global-Parallel Binary Convolutional Neural Network Accelerator for Image Processing.
IEEE Access
Ruizhi Wang, Cheng-Hsuan Wu, Makoto Takamiya
2023 — conf
Transmitter IC Enabling Magnetic Field Shaping for High-Efficiency Wireless Charging of Multiple Receivers.
ASICON
Hao Qiu, Xusheng Zhang, Junji Chen, Yi Shi, Makoto Takamiya
2022 J jnl
A 6.78-MHz Multiple-Transmitter Wireless Power Transfer System With Efficiency Maximization by Adaptive Magnetic Field Adder IC.
IEEE J. Solid State Circuits
Hao Qiu, Takayasu Sakurai, Makoto Takamiya
2022 J jnl
Foreword.
IEICE Trans. Electron.
Makoto Takamiya
2022 J jnl
High-Speed Searching of Optimum Switching Pattern for Digital Active Gate Drive to Adapt to Various Load Conditions.
IEEE Trans. Ind. Electron.
Yu-Shan Cheng, Daiki Yamaguchi, Tomoyuki Mannen, Keiji Wada, Toru Sai, Koutaro Miyazaki, Makoto Takamiya, Takayasu Sakurai
2021 — conf
A 6.78 MHz Wireless Power Transfer System for Simultaneous Charging of Multiple Receivers with Maximum Efficiency using Adaptive Magnetic Field Distributor IC.
VLSI Circuits
Hao Qiu, Makoto Takamiya
2021 J jnl
A multi-path switched-capacitor-inductor hybrid DC-DC converter with reduced inductor loss and extended voltage conversion range.
IEICE Electron. Express
Qiaobo Ma, Xiongjie Zhang, Yang Jiang, Katsuhiro Hata, Makoto Takamiya, Man-Kay Law, Pui-In Mak, Rui Paulo Martins
2021 J jnl
Analysis and Mitigation of Coupling-Dependent Data Flipping in Wireless Power and Data Transfer System.
IEEE Trans. Circuits Syst. I Regul. Pap.
Hao Qiu, Yuntao Jiang, Yi Shi, Takayasu Sakurai, Makoto Takamiya
2021 J jnl
Structure-Reconfigurable Power Amplifier (SR-PA) and 0X/1X Regulating Rectifier for Adaptive Power Control in Wireless Power Transfer System.
IEEE J. Solid State Circuits
Fu-Bin Yang, Jonathan Fuh, Yu-Hsien Li, Makoto Takamiya, Po-Hung Chen
2020 — conf
A 6.78 MHz Wireless Power Transfer System Enabling Perpendicular Wireless Powering with Efficiency Increase from 0.02% to 48.2% by Adaptive Magnetic Field Adder IC Integrating Shared Coupling Coefficient Sensor.
VLSI Circuits
Hao Qiu, Toru Sai, Makoto Takamiya
2020 A conf
An Untethered 216-mg Insect-Sized Jumping Robot with Wireless Power Transmission.
IROS
Riccy Kurniawan, Tamaki Fukudome, Hao Qiu, Makoto Takamiya, Yoshihiro Kawahara, Jinkyu Yang, Ryuma Niiyama
2020 J jnl
Single-Inductor Dual-Input Dual-Output Battery-PV Hybrid System With 2-D Adaptive On-Time Control for Internet of Things.
IEEE Trans. Circuits Syst. I Regul. Pap.
Hui-Hsuan Lee, Chi-Wei Liu, Makoto Takamiya, Po-Hung Chen
2019 J jnl
A 0.90-4.39-V Detection Voltage Range, 56-Level Programmable Voltage Detector Using Fine Voltage-Step Subtraction for Battery Management.
IEEE Trans. Circuits Syst. I Regul. Pap.
Teruki Someya, Kenichi Matsunaga, Hiroki Morimura, Takayasu Sakurai, Makoto Takamiya
2019 — conf
A 500-Mbps Digital Isolator Circuits using Counter-Pulse Immune Receiver Scheme for Power Electronics.
ICICDT
Tsukasa Kagaya, Koutaro Miyazaki, Makoto Takamiya, Takayasu Sakurai
2019 J jnl
An 11-nW CMOS Temperature-to-Digital Converter Utilizing Sub-Threshold Current at Sub-Thermal Drain Voltage.
IEEE J. Solid State Circuits
Teruki Someya, A. K. M. Mahfuzul Islam, Takayasu Sakurai, Makoto Takamiya
2019 — conf
CNN-based Approach for Estimating Degradation of Power Devices by Gate Waveform Monitoring.
ICICDT
Koutaro Miyazaki, Yang Lo, A. K. M. Mahfuzul Islam, Katsuhiro Hata, Makoto Takamiya, Takayasu Sakurai
2019 C conf
Coupling-Dependent Data Flipping in Wireless Power and Data Transfer System.
ISCAS
Hao Qiu, Takayasu Sakurai, Makoto Takamiya
2019 C conf
Digital Active Gate Drive with Optimal Switching Patterns to Adapt to Sinusoidal Output Current in a Full Bridge Inverter Circuit.
IECON
Yu-Shan Cheng, Daiki Yamaguchi, Tomoyuki Mannen, Keiji Wada, Toru Sai, Koutaro Miyazaki, Makoto Takamiya, Takayasu Sakurai
2018 J jnl
2/3 and 1/2 Reconfigurable Switched Capacitor DC-DC Converter With 92.9% Efficiency at 62 mW/mm
IEEE Trans. Circuits Syst. II Express Briefs
Toru Sai, Yoshitaka Yamauchi, Hajime Kando, Tatsuya Funaki, Takayasu Sakurai, Makoto Takamiya
2018 — conf
A 13nW temperature-to-digital converter utilizing sub-threshold MOSFET operation at sub-thermal drain voltage.
CICC
Teruki Someya, Islam A. K. M. Mahfuzul, Takayasu Sakurai, Makoto Takamiya
2018 J jnl
Clocked Hysteresis Control Scheme With Power-Law Frequency Scaling in Buck Converter to Improve Light-Load Efficiency for IoT Sensor Nodes.
IEEE Trans. Very Large Scale Integr. Syst.
Chung-Shiang Wu, Makoto Takamiya, Takayasu Sakurai
2018 — conf
Luciola: a light-emitting particle moving in mid-air based on ultrasonic levitation and wireless powering.
SIGGRAPH ASIA Emerging Technologies
Hao Qiu, Yuki Uno, Toru Sai, Shunta Iguchi, Yota Mizutani, Takayuki Hoshi, Yoshihiro Kawahara, Yasuaki Kakehi, Makoto Takamiya
2018 — conf
Session 27 overview: Power-converter techniques: Power management subcommittee.
ISSCC
Makoto Takamiya, Yen Hsun Hsu, Axel Thomsen
2017 J jnl
A Low-Power CMOS Crystal Oscillator Using a Stacked-Amplifier Architecture.
IEEE J. Solid State Circuits
Shunta Iguchi, Takayasu Sakurai, Makoto Takamiya
2017 — conf
Buck converter with higher than 87% efficiency over 500nA to 20mA load current range for IoT sensor nodes by Clocked Hysteresis Control.
CICC
Chung-Shiang Wu, Makoto Takamiya, Takayasu Sakurai
2017 J jnl
Design and Analysis of Ultra-Low Power Glitch-Free Programmable Voltage Detector Based on Multiple Voltage Copier.
IEICE Trans. Electron.
Teruki Someya, Hiroshi Fuketa, Kenichi Matsunaga, Hiroki Morimura, Takayasu Sakurai, Makoto Takamiya
2017 — conf
F1: Integrated voltage regulators for SoC and emerging IoT systems.
ISSCC
Makoto Takamiya, Yogesh K. Ramadass, Keith A. Bowman, Gerard Villar Pique, Shuichi Nagai, Dennis Sylvester
2017 J jnl
Luciola: A Millimeter-Scale Light-Emitting Particle Moving in Mid-Air Based On Acoustic Levitation and Wireless Powering.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.
Yuki Uno, Hao Qiu, Toru Sai, Shunta Iguchi, Yota Mizutani, Takayuki Hoshi, Yoshihiro Kawahara, Yasuaki Kakehi, Makoto Takamiya
2017 C conf
Modeling of 3-level buck converters in discontinuous conduction mode for stand-by mode power supply.
ISCAS
Yoshitaka Yamauchi, Toru Sai, Takayasu Sakurai, Makoto Takamiya
2017 J jnl
Programmable Neuron Array Based on a 2-Transistor Multiplier Using Organic Floating-Gate for Intelligent Sensors.
IEEE J. Emerg. Sel. Topics Circuits Syst.
Islam A. K. M. Mahfuzul, Masamune Hamamatsu, Tomoyuki Yokota, Sunghoon Lee, Wakako Yukita, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2016 — conf
5.7 A 39.25MHz 278dB-FOM 19µW LDO-free stacked-amplifier crystal oscillator (SAXO) operating at I/O voltage.
ISSCC
Shunta Iguchi, Takayasu Sakurai, Makoto Takamiya
2016 — conf
56-Level programmable voltage detector in steps of 50mV for battery management.
A-SSCC
Teruki Someya, Kenichi Matsunaga, Hiroki Morimura, Takayasu Sakurai, Makoto Takamiya
2016 — conf
Interventional placement of thin coil shaped implants powered wirelessly for monitoring vital signals and controlling abnormal activities by electro-stimulation.
EMBC
Hidetoshi Ohta, Masanobu Honda, Makoto Takamiya
2016 J jnl
Variation-Tolerant Quick-Start-Up CMOS Crystal Oscillator With Chirp Injection and Negative Resistance Booster.
IEEE J. Solid State Circuits
Shunta Iguchi, Hiroshi Fuketa, Takayasu Sakurai, Makoto Takamiya
2015 — conf
16.4 Energy-autonomous fever alarm armband integrating fully flexible solar cells, piezoelectric speaker, temperature detector, and 12V organic complementary FET circuits.
ISSCC
Hiroshi Fuketa, Masamune Hamamatsu, Tomoyuki Yokota, Wakako Yukita, Teruki Someya, Tsuyoshi Sekitani, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2015 — conf
248pW, 0.11mV/°C glitch-free programmable voltage detector with multiple voltage duplicator for energy harvesting.
ESSCIRC
Teruki Someya, Hiroshi Fuketa, Kenichi Matsunaga, Hiroki Morimura, Takayasu Sakurai, Makoto Takamiya
2015 — conf
Analysis to optimize sensitivity of RF energy harvester with voltage boost circuit.
ECCTD
Dan Luo, Hiroshi Fuketa, Kenichi Matsunaga, Hiroki Morimura, Makoto Takamiya, Takayasu Sakurai
2015 — conf
Energy efficient design and energy harvesting for energy autonomous systems.
VLSI-DAT
Makoto Takamiya
2015 — conf
F4: Building the Internet of Everything (IoE): Low-power techniques at the circuit and system levels.
ISSCC
Marian Verhelst, Dennis Sylvester, Makoto Takamiya, Mike Clinton, Kathy Wilcox, Koichi Nose
2015 J jnl
Jussi Ryynänen Introduction to the December Special Issue on the 2015 IEEE International Solid-State Circuits Conference.
IEEE J. Solid State Circuits
Makoto Takamiya, Jieh-Tsorng Wu, Jussi Ryynänen, Kenichi Okada, Jaeha Kim
2015 — conf
Optimal design to maximize efficiency of single-inductor multiple-output buck converters in discontinuous conduction mode for IoT applications.
ICICDT
Yoshitaka Yamauchi, Yuki Yanagihara, Hiroshi Fuketa, Takayasu Sakurai, Makoto Takamiya
2015 J jnl
Wireless Power Transfer With Zero-Phase-Difference Capacitance Control.
IEEE Trans. Circuits Syst. I Regul. Pap.
Shunta Iguchi, Pyungwoo Yeon, Hiroshi Fuketa, Koichi Ishida, Takayasu Sakurai, Makoto Takamiya
2014 J jnl
1 µm-Thickness Ultra-Flexible and High Electrode-Density Surface Electromyogram Measurement Sheet With 2 V Organic Transistors for Prosthetic Hand Control.
IEEE Trans. Biomed. Circuits Syst.
Hiroshi Fuketa, Kazuaki Yoshioka, Yasuhiro Shinozuka, Koichi Ishida, Tomoyuki Yokota, Naoji Matsuhisa, Yusuke Inoue, Masaki Sekino, Tsuyoshi Sekitani, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2014 — conf
30.3 Organic-transistor-based 2kV ESD-tolerant flexible wet sensor sheet for biomedical applications with wireless power and data transmission using 13.56MHz magnetic resonance.
ISSCC
Hiroshi Fuketa, Kazuaki Yoshioka, Tomoyuki Yokota, Wakako Yukita, Mari Koizumi, Masaki Sekino, Tsuyoshi Sekitani, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2014 — conf
92% start-up time reduction by variation-tolerant chirp injection (CI) and negative resistance booster (NRB) in 39MHz crystal oscillator.
VLSIC
Shunta Iguchi, Hiroshi Fuketa, Takayasu Sakurai, Makoto Takamiya
2014 J jnl
A 0.6 V Input CCM/DCM Operating Digital Buck Converter in 40 nm CMOS.
IEEE J. Solid State Circuits
Xin Zhang, Po-Hung Chen, Yasuyuki Okuma, Koichi Ishida, Yoshikatsu Ryu, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya
2014 — conf
An 85-mV input, 50-µs startup fully integrated voltage multiplier with passive clock boost using on-chip transformers for energy harvesting.
ESSCIRC
Hiroshi Fuketa, Youichi Momiyama, Atsushi Okamoto, Tsuyoshi Sakata, Makoto Takamiya, Takayasu Sakurai
2014 J jnl
Design Method of Class-F Power Amplifier With Output Power of -20 dBm and Efficient Dual Supply Voltage Transmitter.
IEEE Trans. Circuits Syst. I Regul. Pap.
Shunta Iguchi, Akira Saito, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya
2014 — conf
Flexible, large-area, and distributed organic electronics closely contacted with skin for healthcare applications.
MWSCAS
Makoto Takamiya, Hiroshi Fuketa, Koichi Ishida, Tomoyuki Yokota, Tsuyoshi Sekitani, Takao Someya, Takayasu Sakurai
2014 J jnl
Intermittent Resonant Clocking Enabling Power Reduction at Any Clock Frequency for Near/Sub-Threshold Logic Circuits.
IEEE J. Solid State Circuits
Hiroshi Fuketa, Masahiro Nomura, Makoto Takamiya, Takayasu Sakurai
2013 — conf
1µm-thickness 64-channel surface electromyogram measurement sheet with 2V organic transistors for prosthetic hand control.
ISSCC
Hiroshi Fuketa, Kazuaki Yoshioka, Yasuhiro Shinozuka, Koichi Ishida, Tomoyuki Yokota, Naoji Matsuhisa, Yusuke Inoue, Masaki Sekino, Tsuyoshi Sekitani, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2013 — conf
315MHz OOK transceiver with 38-µW receiver and 36-µW transmitter in 40-nm CMOS.
ASP-DAC
Shunta Iguchi, Akira Saito, Kentaro Honda, Yun Fei Zheng, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya
2013 — conf
A 40-nm 8T SRAM with selective source line control of read bitlines and address preset structure.
CICC
Shusuke Yoshimoto, Shinji Miyano, Makoto Takamiya, Hirofumi Shinohara, Hiroshi Kawaguchi, Masahiko Yoshimoto
2013 — conf
A low voltage buck DC-DC converter using on-chip gate boost technique in 40nm CMOS.
ASP-DAC
Xin Zhang, Po-Hung Chen, Yoshikatsu Ryu, Koichi Ishida, Yasuyuki Okuma, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya
2013 A* conf
Electrical artificial skin using ultraflexible organic transistor.
DAC
Tsuyoshi Sekitani, Tomoyuki Yokota, Makoto Takamiya, Takayasu Sakurai, Takao Someya
2013 J jnl
Increase of Crosstalk Noise Due to Imbalanced Threshold Voltage Between nMOS and pMOS in Subthreshold Logic Circuits.
IEEE J. Solid State Circuits
Hiroshi Fuketa, Ryo Takahashi, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai
2013 J jnl
Insole Pedometer With Piezoelectric Energy Harvester and 2 V Organic Circuits.
IEEE J. Solid State Circuits
Koichi Ishida, Tsung-Ching Huang, Kentaro Honda, Yasuhiro Shinozuka, Hiroshi Fuketa, Tomoyuki Yokota, Ute Zschieschang, Hagen Klauk, Gregory Tortissier, Tsuyoshi Sekitani, Hiroshi Toshiyoshi, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2013 — conf
Intermittent resonant clocking enabling power reduction at any clock frequency for 0.37V 980kHz near-threshold logic circuits.
ISSCC
Hiroshi Fuketa, Masahiro Nomura, Makoto Takamiya, Takayasu Sakurai
2013 — conf
Large-area and flexible sensors with organic transistors.
IWASI
Hiroshi Fuketa, Koichi Ishida, Tsuyoshi Sekitani, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2013 J jnl
Minimizing Energy of Integer Unit by Higher Voltage Flip-Flop: V
IEEE Trans. Very Large Scale Integr. Syst.
Hiroshi Fuketa, Koji Hirairi, Tadashi Yasufuku, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai
2013 — conf
Reducing IR drop in 3D integration to less than 1/4 using Buck Converter on Top die (BCT) scheme.
ISQED
Yasuhiro Shinozuka, Hiroshi Fuketa, Koichi Ishida, Futoshi Furuta, Kenichi Osada, Kenichi Takeda, Makoto Takamiya, Takayasu Sakurai
2013 — conf
Variation-aware subthreshold logic circuit design.
ASICON
Hiroshi Fuketa, Ryo Takahashi, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai
2012 A conf
0.35V, 4.1μW, 39MHz crystal oscillator in 40nm CMOS.
ISLPED
Akira Saito, Yun Fei Zheng, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya
2012 — conf
13% Power reduction in 16b integer unit in 40nm CMOS by adaptive power supply voltage control with parity-based error prediction and detection (PEPD) and fully integrated digital LDO.
ISSCC
Koji Hirairi, Yasuyuki Okuma, Hiroshi Fuketa, Tadashi Yasufuku, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai
2012 — conf
2.1 Times increase of drain efficiency by dual supply voltage scheme in 315MHz class-F Power amplifier at output power of -20dBm.
ESSCIRC
Shunta Iguchi, Akira Saito, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya
2012 — conf
24% Power reduction by post-fabrication dual supply voltage control of 64 voltage domains in V
ISQED
Tadashi Yasufuku, Koji Hirairi, Yu Pu, Yun Fei Zheng, Ryo Takahashi, Masato Sasaki, Hiroshi Fuketa, Atsushi Muramatsu, Masahiro Nomura, Hirofumi Shinohara, Makoto Takamiya, Takayasu Sakurai
2012 — conf
A 0.45-V input on-chip gate boosted (OGB) buck converter in 40-nm CMOS with more than 90% efficiency in load range from 2µW to 50µW.
VLSIC
Xin Zhang, Po-Hung Chen, Yoshikatsu Ryu, Koichi Ishida, Yasuyuki Okuma, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya
2012 J jnl
A 1-V-Input Switched-Capacitor Voltage Converter With Voltage-Reference-Free Pulse-Density Modulation.
IEEE Trans. Circuits Syst. II Express Briefs
Xin Zhang, Yu Pu, Koichi Ishida, Yoshikatsu Ryu, Yasuyuki Okuma, Po-Hung Chen, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya
2012 J jnl
A 100-V AC Energy Meter Integrating 20-V Organic CMOS Digital and Analog Circuits With a Floating Gate for Process Variation Compensation and a 100-V Organic pMOS Rectifier.
IEEE J. Solid State Circuits
Koichi Ishida, Tsung-Ching Huang, Kentaro Honda, Tsuyoshi Sekitani, Hiroyoshi Nakajima, Hiroki Maeda, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2012 — conf
A 120-mV input, fully integrated dual-mode charge pump in 65-nm CMOS for thermoelectric energy harvester.
ASP-DAC
Po-Hung Chen, Koichi Ishida, Xin Zhang, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai
2012 J jnl
A 315 MHz Power-Gated Ultra Low Power Transceiver in 40 nm CMOS for Wireless Sensor Network.
IEICE Trans. Electron.
Lechang Liu, Takayasu Sakurai, Makoto Takamiya
2012 J jnl
An 80 mV Startup Dual-Mode Boost Converter by Charge-Pumped Pulse Generator and Threshold Voltage Tuned Oscillator With Hot Carrier Injection.
IEEE J. Solid State Circuits
Po-Hung Chen, Xin Zhang, Koichi Ishida, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai
2012 — conf
An all 0.5V, 1Mbps, 315MHz OOK transceiver with 38-µW career-frequency-free intermittent sampling receiver and 52-µW class-F transmitter in 40-nm CMOS.
VLSIC
Akira Saito, Kentaro Honda, Yun Fei Zheng, Shunta Iguchi, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya
2012 J jnl
EMI Camera LSI (EMcam) with On-Chip Loop Antenna Matrix to Measure EMI Noise Spectrum and Distribution.
IEICE Trans. Electron.
Naoki Masunaga, Koichi Ishida, Takayasu Sakurai, Makoto Takamiya
2012 — conf
Increase of crosstalk noise due to imbalanced threshold voltage between NMOS and PMOS in sub-threshold logic circuits.
CICC
Hiroshi Fuketa, Ryo Takahashi, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai
2012 — conf
Insole pedometer with piezoelectric energy harvester and 2V organic digital and analog circuits.
ISSCC
Koichi Ishida, Tsung-Ching Huang, Kentaro Honda, Yasuhiro Shinozuka, Hiroshi Fuketa, Tomoyuki Yokota, Ute Zschieschang, Hagen Klauk, Gregory Tortissier, Tsuyoshi Sekitani, Makoto Takamiya, Hiroshi Toshiyoshi, Takao Someya, Takayasu Sakurai
2012 J jnl
Large Within-Die Gate Delay Variations in Sub-Threshold Logic Circuits at Low Temperature.
IEEE Trans. Circuits Syst. II Express Briefs
Ryo Takahashi, Hidehiro Takata, Tadashi Yasufuku, Hiroshi Fuketa, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai
2012 J jnl
On-Chip Measurement System for Within-Die Delay Variation of Individual Standard Cells in 65-nm CMOS.
IEEE Trans. Very Large Scale Integr. Syst.
Xin Zhang, Koichi Ishida, Hiroshi Fuketa, Makoto Takamiya, Takayasu Sakurai
2012 J jnl
Startup Techniques for 95 mV Step-Up Converter by Capacitor Pass-On Scheme and V
IEEE J. Solid State Circuits
Po-Hung Chen, Koichi Ishida, Katsuyuki Ikeuchi, Xin Zhang, Kentaro Honda, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai
2011 J jnl
0.18-V Input Charge Pump with Forward Body Bias to Startup Boost Converter for Energy Harvesting Applications.
IEICE Trans. Electron.
Po-Hung Chen, Koichi Ishida, Xin Zhang, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai
2011 J jnl
0.5-V Input Digital Low-Dropout Regulator (LDO) with 98.7% Current Efficiency in 65 nm CMOS.
IEICE Trans. Electron.
Yasuyuki Okuma, Koichi Ishida, Yoshikatsu Ryu, Xin Zhang, Po-Hung Chen, Kazunori Watanabe, Makoto Takamiya, Takayasu Sakurai
2011 J jnl
0.6 V Voltage Shifter and Clocked Comparator for Sampling Correlation-Based Impulse Radio UWB Receiver.
IEICE Trans. Electron.
Lechang Liu, Takayasu Sakurai, Makoto Takamiya
2011 J jnl
1 Gb/s, 50 µm × 50 µm Pads on Board Wireless Connector Based on Track-and-Charge Scheme Allowing Contacted Signaling.
IEICE Trans. Electron.
Katsuyuki Ikeuchi, Hideki Kusamitsu, Mutsuo Daito, Gil-Su Kim, Makoto Takamiya, Takayasu Sakurai
2011 J jnl
1.8 V Low-Transient-Energy Adaptive Program-Voltage Generator Based on Boost Converter for 3D-Integrated NAND Flash SSD.
IEEE J. Solid State Circuits
Koichi Ishida, Tadashi Yasufuku, Shinji Miyamoto, Hiroto Nakai, Makoto Takamiya, Takayasu Sakurai, Ken Takeuchi
2011 — conf
100V AC power meter system-on-a-film (SoF) integrating 20V organic CMOS digital and analog circuits with floating gate for process-variation compensation and 100V organic PMOS rectifier.
ISSCC
Koichi Ishida, Tsung-Ching Huang, Kentaro Honda, Tsuyoshi Sekitani, Hiroyoshi Nakajima, Hiroki Maeda, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2011 — conf
12% Power reduction by within-functional-block fine-grained adaptive dual supply voltage control in logic circuits with 42 voltage domains.
ESSCIRC
Atsushi Muramatsu, Tadashi Yasufuku, Masahiro Nomura, Makoto Takamiya, Hirofumi Shinohara, Takayasu Sakurai
2011 A conf
12.7-times energy efficiency increase of 16-bit integer unit by power supply voltage (V
ISLPED
Hiroshi Fuketa, Koji Hirairi, Tadashi Yasufuku, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai
2011 — conf
A 80-mV input, fast startup dual-mode boost converter with charge-pumped pulse generator for energy harvesting.
A-SSCC
Po-Hung Chen, Koichi Ishida, Xin Zhang, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai
2011 — conf
A 95mV-startup step-up converter with Vth-tuned oscillator by fixed-charge programming and capacitor pass-on scheme.
ISSCC
Po-Hung Chen, Koichi Ishida, Katsuyuki Ikeuchi, Xin Zhang, Kentaro Honda, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai
2011 J jnl
A Charge-Domain Auto- and Cross-Correlation Based Data Synchronization Scheme With Power- and Area-Efficient PLL for Impulse Radio UWB Receiver.
IEEE J. Solid State Circuits
Lechang Liu, Takayasu Sakurai, Makoto Takamiya
2011 J jnl
A Variable Output Voltage Switched-Capacitor DC-DC Converter with Pulse Density and Width Modulation (PDWM) for 57% Ripple Reduction at Low Output Voltage.
IEICE Trans. Electron.
Xin Zhang, Yu Pu, Koichi Ishida, Yoshikatsu Ryu, Yasuyuki Okuma, Po-Hung Chen, Takayasu Sakurai, Makoto Takamiya
2011 A* conf
A closed-form expression for estimating minimum operating voltage (V
DAC
Hiroshi Fuketa, Satoshi Iida, Tadashi Yasufuku, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai
2011 — conf
An on-chip characterizing system for within-die delay variation measurement of individual standard cells in 65-nm CMOS.
ASP-DAC
Xin Zhang, Koichi Ishida, Makoto Takamiya, Takayasu Sakurai
2011 J jnl
Capacitively Coupled Non-Contact Probing Circuits for Membrane-Based Wafer-Level Simultaneous Testing.
IEEE J. Solid State Circuits
Mutsuo Daito, Yoshiro Nakata, Satoshi Sasaki, Hiroyuki Gomyo, Hideki Kusamitsu, Yoshio Komoto, Kunihiko Iizuka, Katsuyuki Ikeuchi, Gil-Su Kim, Makoto Takamiya, Takayasu Sakurai
2011 A conf
Investigation of determinant factors of minimum operating voltage of logic gates in 65-nm CMOS.
ISLPED
Tadashi Yasufuku, Satoshi Iida, Hiroshi Fuketa, Koji Hirairi, Masahiro Nomura, Makoto Takamiya, Takayasu Sakurai
2011 J jnl
Post-Silicon Clock Deskew Employing Hot-Carrier Injection Trimming With On-Chip Skew Monitoring and Auto-Stressing Scheme for Sub/Near Threshold Digital Circuits.
IEEE Trans. Circuits Syst. II Express Briefs
Yu Pu, Xin Zhang, Katsuyuki Ikeuchi, Atsushi Muramatsu, Atsushi Kawasumi, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai
2011 J jnl
Power Supply Voltage Dependence of Within-Die Delay Variation of Regular Manual Layout and Irregular Place-and-Route Layout.
IEICE Trans. Electron.
Tadashi Yasufuku, Yasumi Nakamura, Piao Zhe, Makoto Takamiya, Takayasu Sakurai
2011 A conf
Reduction of minimum operating voltage (V
ISLPED
Kentaro Honda, Katsuyuki Ikeuchi, Masahiro Nomura, Makoto Takamiya, Takayasu Sakurai
2011 — conf
Through Silicon Capacitive Coupling (TSCC) interface for 3D stacked dies.
3DIC
Katsuyuki Ikeuchi, Makoto Takamiya, Takayasu Sakurai
2011 J jnl
User Customizable Logic Paper (UCLP) With Sea-Of Transmission-Gates (SOTG) of 2-V Organic CMOS and Ink-Jet Printed Interconnects.
IEEE J. Solid State Circuits
Koichi Ishida, Naoki Masunaga, Ryo Takahashi, Tsuyoshi Sekitani, Shigeki Shino, Ute Zschieschang, Hagen Klauk, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2010 — conf
0.18-V input charge pump with forward body biasing in startup circuit using 65nm CMOS.
CICC
Po-Hung Chen, Koichi Ishida, Xin Zhang, Yasuaki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai
2010 — conf
0.5-V input digital LDO with 98.7% current efficiency and 2.7-µA quiescent current in 65nm CMOS.
CICC
Yasuyuki Okuma, Koichi Ishida, Yoshikatsu Ryu, Xin Zhang, Po-Hung Chen, Kazunori Watanabe, Makoto Takamiya, Takayasu Sakurai
2010 — conf
3D stacked buck converter with 15μm thick spiral inductor on silicon interposer for fine-grain power-supply voltage control in SiP's.
3DIC
Koichi Ishida, Koichi Takemura, Kazuhiro Baba, Makoto Takamiya, Takayasu Sakurai
2010 J jnl
A 1.76 mW, 100 Mbps Impulse Radio UWB Receiver with Multiple Sampling Correlators Eliminating Need for Phase Synchronization in 65-nm CMOS.
IEICE Trans. Electron.
Lechang Liu, Zhiwei Zhou, Takayasu Sakurai, Makoto Takamiya
2010 — conf
A high-speed, low-power capacitive-coupling transceiver for wireless wafer-level testing systems.
3DIC
Gil-Su Kim, Katsuyuki Ikeuchi, Mutsuo Daito, Makoto Takamiya, Takayasu Sakurai
2010 — conf
Capacitively coupled non-contact probing circuits for membrane-based wafer-level simultaneous testing.
ISSCC
Mutsuo Daito, Yoshiro Nakata, Satoshi Sasaki, Hiroyuki Gomyo, Hideki Kusamitsu, Yoshio Komoto, Kunihiko Iizuka, Katsuyuki Ikeuchi, Gil-Su Kim, Makoto Takamiya, Takayasu Sakurai
2010 A conf
Design of large area electronics with organic transistors.
ICCAD
Makoto Takamiya, Koichi Ishida, Tsuyoshi Sekitani, Takao Someya, Takayasu Sakurai
2010 J jnl
Difficulty of Power Supply Voltage Scaling in Large Scale Subthreshold Logic Circuits.
IEICE Trans. Electron.
Tadashi Yasufuku, Taro Niiyama, Piao Zhe, Koichi Ishida, Masami Murakata, Makoto Takamiya, Takayasu Sakurai
2010 — conf
EMI Camera LSI (EMcam) with 12 × 4 on-chip loop antenna matrix in 65-nm CMOS to measure EMI noise distribution with 60-µm spatial precision.
CICC
Naoki Masunaga, Koichi Ishida, Makoto Takamiya, Takayasu Sakurai
2010 J jnl
Inductor and TSV Design of 20-V Boost Converter for Low Power 3D Solid State Drive with NAND Flash Memories.
IEICE Trans. Electron.
Tadashi Yasufuku, Koichi Ishida, Shinji Miyamoto, Hiroto Nakai, Makoto Takamiya, Takayasu Sakurai, Ken Takeuchi
2010 A conf
Misleading energy and performance claims in sub/near threshold digital systems.
ICCAD
Yu Pu, Xin Zhang, Jim Huang, Atsushi Muramatsu, Masahiro Nomura, Koji Hirairi, Hidehiro Takata, Taro Sakurabayashi, Shinji Miyano, Makoto Takamiya, Takayasu Sakurai
2010 J jnl
Stretchable EMI Measurement Sheet With 8 ˟ 8 Coil Array, 2 V Organic CMOS Decoder, and 0.18 μ m Silicon CMOS LSIs for Electric and Magnetic Field Detection.
IEEE J. Solid State Circuits
Koichi Ishida, Naoki Masunaga, Zhiwei Zhou, Tadashi Yasufuku, Tsuyoshi Sekitani, Ute Zschieschang, Hagen Klauk, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2010 — conf
User Customizable Logic Paper (UCLP) with organic sea-of-transmission-gates (SOTG) architecture and ink-jet printed interconnects.
ISSCC
Koichi Ishida, Naoki Masunaga, Ryo Takahashi, Tsuyoshi Sekitani, Shigeki Shino, Ute Zschieschang, Hagen Klauk, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2009 — conf
A 1.8V 30nJ adaptive program-voltage (20V) generator for 3D-integrated NAND flash SSD.
ISSCC
Koichi Ishida, Tadashi Yasufuku, Shinji Miyamoto, Hiroto Nakai, Makoto Takamiya, Takayasu Sakurai, Ken Takeuchi
2009 J jnl
A 100 Mbps, 4.1 pJ/bit Threshold Detection-Based Impulse Radio UWB Transceiver in 90 nm CMOS.
IEICE Trans. Electron.
Lechang Liu, Yoshio Miyamoto, Zhiwei Zhou, Kosuke Sakaida, Jisun Ryu, Koichi Ishida, Makoto Takamiya, Takayasu Sakurai
2009 — conf
A 100Mbps, 0.19mW asynchronous threshold detector with DC power-free pulse discrimination for impulse UWB receiver.
ASP-DAC
Lechang Liu, Yoshio Miyamoto, Zhiwei Zhou, Kosuke Sakaida, Jisun Ryu, Koichi Ishida, Makoto Takamiya, Takayasu Sakurai
2009 J jnl
A 107-pJ/bit 100-kb/s 0.18- muhboxm Capacitive-Coupling Transceiver With Data Edge Signaling and DC Power-Free Pulse Detector for Printable Communication Sheet.
IEEE Trans. Circuits Syst. I Regul. Pap.
Lechang Liu, Makoto Takamiya, Tsuyoshi Sekitani, Yoshiaki Noguchi, Shintaro Nakano, Koichiro Zaitsu, Tadahiro Kuroda, Takao Someya, Takayasu Sakurai
2009 J jnl
A 25-mV-Sensitivity 2-Gb/s Optimum-Logic-Threshold Capacitive-Coupling Receiver for Wireless Wafer Probing Systems.
IEEE Trans. Circuits Syst. II Express Briefs
Gil-Su Kim, Makoto Takamiya, Takayasu Sakurai
2009 — conf
A capacitive coupling interface with high sensitivity for wireless wafer testing.
3DIC
Gil-Su Kim, Makoto Takamiya, Takayasu Sakurai
2009 — conf
A stretchable EMI measurement sheet with 8×8 coil array, 2V organic CMOS decoder, and -70dBm EMI detection circuits in 0.18¼m CMOS.
ISSCC
Koichi Ishida, Naoki Masunaga, Zhiwei Zhou, Tadashi Yasufuku, Tsuyoshi Sekitani, Ute Zschieschang, Hagen Klauk, Makoto Takamiya, Takao Someya, Takayasu Sakurai
2009 J jnl
An On-Chip Noise Canceller with High Voltage Supply Lines for Nanosecond-Range Power Supply Noise.
IEICE Trans. Electron.
Yasumi Nakamura, Makoto Takamiya, Takayasu Sakurai
2009 — conf
Effect of resistance of TSV's on performance of boost converter for low power 3D SSD with NAND flash memories.
3DIC
Tadashi Yasufuku, Koichi Ishida, Shinji Miyamoto, Hiroto Nakai, Makoto Takamiya, Takayasu Sakurai, Ken Takeuchi
2009 A conf
Inductor design of 20-V boost converter for low power 3D solid state drive with NAND flash memories.
ISLPED
Tadashi Yasufuku, Koichi Ishida, Shinji Miyamoto, Hiroto Nakai, Makoto Takamiya, Takayasu Sakurai, Ken Takeuchi
2009 J jnl
Low Power VLSI Circuit Design with Fine-Grain Voltage Engineering.
Inf. Media Technol.
Makoto Takamiya, Takayasu Sakurai
2009 J jnl
Low Power VLSI Circuit Design with Fine-Grain Voltage Engineering.
IPSJ Trans. Syst. LSI Des. Methodol.
Makoto Takamiya, Takayasu Sakurai
2009 — conf
Switched Resonant Clocking (SRC) scheme enabling dynamic frequency scaling and low-speed test.
CICC
Katsuyuki Ikeuchi, Kosuke Sakaida, Koichi Ishida, Takayasu Sakurai, Makoto Takamiya
2008 — conf
1/5 power reduction by global optimization based on fine-grained body biasing.
CICC
Yasumi Nakamura, David Levacq, Limin Xiao, Takuya Minakawa, Taro Niiyama, Makoto Takamiya, Takayasu Sakurai
2008 — conf
A 107pJ/b 100kb/s 0.18μm Capacitive-Coupling Transceiver for Printable Communication Sheet.
ISSCC
Lechang Liu, Makoto Takamiya, Tsuyoshi Sekitani, Yoshiaki Noguchi, Shintaro Nakano, Koichiro Zaitsu, Tadahiro Kuroda, Takao Someya, Takayasu Sakurai
2008 J jnl
Backgate Bias Accelerator for sub-100 ns Sleep-to-Active Modes Transition Time.
IEEE J. Solid State Circuits
David Levacq, Makoto Takamiya, Takayasu Sakurai
2008 — conf
Dependence of Minimum Operating Voltage (VDDmin) on Block Size of 90-nm CMOS Ring Oscillators and its Implications in Low Power DFM.
ISQED
Taro Niiyama, Piao Zhe, Koichi Ishida, Masami Murakata, Makoto Takamiya, Takayasu Sakurai
2008 — conf
Expected vectorless Teacher-Student Swap (TSS) test method with dual power supply voltages for 0.3V homogeneous multi-core LSI's.
CICC
Taro Niiyama, Koichi Ishida, Makoto Takamiya, Takayasu Sakurai
2008 — conf
Experimental assessment of logic circuit performance variability with regular fabrics at 90nm technology node.
ESSCIRC
Sungdae Choi, Katsuyuki Ikeuchi, Hyunkyung Kim, Kenichi Inagaki, Masami Murakata, Nobuyuki Nishiguchi, Makoto Takamiya, Takayasu Sakurai
2008 A conf
Increasing minimum operating voltage (V
ISLPED
Taro Niiyama, Piao Zhe, Koichi Ishida, Masami Murakata, Makoto Takamiya, Takayasu Sakurai
2008 — conf
Session 3 - Power management.
CICC
Gordon Lee, Makoto Takamiya
2007 — conf
A Wide Range Spatial Frequency Analysis of Intra-Die Variations with 4-mm 4000 × 1 Transistor Arrays in 90nm CMOS.
CICC
David Levacq, Takuya Minakawa, Makoto Takamiya, Takayasu Sakurai
2007 J jnl
An Organic FET SRAM With Back Gate to Increase Static Noise Margin and Its Application to Braille Sheet Display.
IEEE J. Solid State Circuits
Makoto Takamiya, Tsuyoshi Sekitani, Yusaku Kato, Hiroshi Kawaguchi, Takao Someya, Takayasu Sakurai
2007 J jnl
An Outside-Rail Opamp Design Relaxing Low-Voltage Constraint on Future Scaled Transistors.
IEICE Trans. Electron.
Koichi Ishida, Atit Tamtrakarn, Hiroki Ishikuro, Makoto Takamiya, Takayasu Sakurai
2007 — conf
Design Solutions for a Multi-Object Wireless Power Transmission Sheet Based on Plastic Switches.
ISSCC
Makoto Takamiya, Tsuyoshi Sekitani, Yoshio Miyamoto, Yoshiaki Noguchi, Hiroshi Kawaguchi, Takao Someya, Takayasu Sakurai
2007 — conf
Half VDD Clock-Swing Flip-Flop with Reduced Contention for up to 60% Power Saving in Clock Distribution.
ESSCIRC
David Levacq, Muhammad Yazid, Hiroshi Kawaguchi, Makoto Takamiya, Takayasu Sakurai
2007 J jnl
Stacked-Chip Implementation of On-Chip Buck Converter for Distributed Power Supply System in SiPs.
IEEE J. Solid State Circuits
Kohei Onizuka, Kenichi Inagaki, Hiroshi Kawaguchi, Makoto Takamiya, Takayasu Sakurai
2006 J jnl
$V_rm DD$-Hopping Accelerators for On-Chip Power Supply Circuit to Achieve Nanosecond-Order Transient Time.
IEEE J. Solid State Circuits
Kohei Onizuka, Hiroshi Kawaguchi, Makoto Takamiya, Takayasu Sakurai
2006 — conf
An Organic FET SRAM for Braille Sheet Display with Back Gate to Increase Static Noise Margin.
ISSCC
Makoto Takamiya, Tsuyoshi Sekitani, Yusaku Kato, Hiroshi Kawaguchi, Teruki Someya, Takayasu Sakurai
2006 — conf
Chip-to-Chip Inductive Wireless Power Transmission System for SiP Applications.
CICC
Kohei Onizuka, Hiroshi Kawaguchi, Makoto Takamiya, Tadahiro Kuroda, Takayasu Sakurai
2005 J jnl
A 6.7-fF/μm
IEEE J. Solid State Circuits
Makoto Takamiya, Masayuki Mizuno
2000 — conf
Boosted gate MOS (BGMOS): device/circuit cooperation scheme to achieve leakage-free giga-scale integration.
CICC
Takashi Inukai, Makoto Takamiya, Kouichi Nose, Hiroshi Kawaguchi, Toshiro Hiramoto, Takayasu Sakurai