Boosted gate MOS (BGMOS): device/circuit cooperation scheme to achieve leakage-free giga-scale integration. - Takashi Inukai; Makoto Takamiya; Kouichi Nose; Hiroshi Kawaguchi 001; Toshiro Hiramoto; Takayasu Sakurai (CICC, 2000)

A 6.7-fF/μm2 bias-independent gate capacitor (BIGCAP) with digital CMOS process and its application to the loop filter of a differential PLL. - Makoto Takamiya; Masayuki Mizuno (IEEE J. Solid State Circuits, 2005)

Chip-to-Chip Inductive Wireless Power Transmission System for SiP Applications. - Kohei Onizuka; Hiroshi Kawaguchi 001; Makoto Takamiya; Tadahiro Kuroda; Takayasu Sakurai (CICC, 2006)

An Organic FET SRAM for Braille Sheet Display with Back Gate to Increase Static Noise Margin. - Makoto Takamiya; Tsuyoshi Sekitani; Yusaku Kato; Hiroshi Kawaguchi 001; Teruki Someya; Takayasu Sakurai (ISSCC, 2006)

$V_rm DD$-Hopping Accelerators for On-Chip Power Supply Circuit to Achieve Nanosecond-Order Transient Time. - Kohei Onizuka; Hiroshi Kawaguchi 001; Makoto Takamiya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2006)

A Wide Range Spatial Frequency Analysis of Intra-Die Variations with 4-mm 4000 × 1 Transistor Arrays in 90nm CMOS. - David Levacq; Takuya Minakawa; Makoto Takamiya; Takayasu Sakurai (CICC, 2007)

Half VDD Clock-Swing Flip-Flop with Reduced Contention for up to 60% Power Saving in Clock Distribution. - David Levacq; Muhammad Yazid; Hiroshi Kawaguchi 001; Makoto Takamiya; Takayasu Sakurai (ESSCIRC, 2007)

Design Solutions for a Multi-Object Wireless Power Transmission Sheet Based on Plastic Switches. - Makoto Takamiya; Tsuyoshi Sekitani; Yoshio Miyamoto; Yoshiaki Noguchi; Hiroshi Kawaguchi 001; Takao Someya; Takayasu Sakurai (ISSCC, 2007)

An Outside-Rail Opamp Design Relaxing Low-Voltage Constraint on Future Scaled Transistors. - Koichi Ishida; Atit Tamtrakarn; Hiroki Ishikuro; Makoto Takamiya; Takayasu Sakurai (IEICE Trans. Electron., 2007)

Stacked-Chip Implementation of On-Chip Buck Converter for Distributed Power Supply System in SiPs. - Kohei Onizuka; Kenichi Inagaki; Hiroshi Kawaguchi 001; Makoto Takamiya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2007)

An Organic FET SRAM With Back Gate to Increase Static Noise Margin and Its Application to Braille Sheet Display. - Makoto Takamiya; Tsuyoshi Sekitani; Yusaku Kato; Hiroshi Kawaguchi 001; Takao Someya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2007)

Session 3 - Power management. - Gordon Lee; Makoto Takamiya (CICC, 2008)

1/5 power reduction by global optimization based on fine-grained body biasing. - Yasumi Nakamura; David Levacq; Limin Xiao; Takuya Minakawa; Taro Niiyama; Makoto Takamiya; Takayasu Sakurai (CICC, 2008)

Expected vectorless Teacher-Student Swap (TSS) test method with dual power supply voltages for 0.3V homogeneous multi-core LSI's. - Taro Niiyama; Koichi Ishida; Makoto Takamiya; Takayasu Sakurai (CICC, 2008)

Experimental assessment of logic circuit performance variability with regular fabrics at 90nm technology node. - Sungdae Choi; Katsuyuki Ikeuchi; Hyunkyung Kim; Kenichi Inagaki; Masami Murakata; Nobuyuki Nishiguchi; Makoto Takamiya; Takayasu Sakurai (ESSCIRC, 2008)

Increasing minimum operating voltage (VDDmin) with number of CMOS logic gates and experimental verification with up to 1Mega-stage ring oscillators. - Taro Niiyama; Piao Zhe; Koichi Ishida; Masami Murakata; Makoto Takamiya; Takayasu Sakurai (ISLPED, 2008)

Dependence of Minimum Operating Voltage (VDDmin) on Block Size of 90-nm CMOS Ring Oscillators and its Implications in Low Power DFM. - Taro Niiyama; Piao Zhe; Koichi Ishida; Masami Murakata; Makoto Takamiya; Takayasu Sakurai (ISQED, 2008)

A 107pJ/b 100kb/s 0.18μm Capacitive-Coupling Transceiver for Printable Communication Sheet. - Lechang Liu; Makoto Takamiya; Tsuyoshi Sekitani; Yoshiaki Noguchi; Shintaro Nakano; Koichiro Zaitsu; Tadahiro Kuroda; Takao Someya; Takayasu Sakurai (ISSCC, 2008)

Backgate Bias Accelerator for sub-100 ns Sleep-to-Active Modes Transition Time. - David Levacq; Makoto Takamiya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2008)

A capacitive coupling interface with high sensitivity for wireless wafer testing. - Gil-Su Kim; Makoto Takamiya; Takayasu Sakurai (3DIC, 2009)

Effect of resistance of TSV's on performance of boost converter for low power 3D SSD with NAND flash memories. - Tadashi Yasufuku; Koichi Ishida; Shinji Miyamoto; Hiroto Nakai; Makoto Takamiya; Takayasu Sakurai; Ken Takeuchi (3DIC, 2009)

A 100Mbps, 0.19mW asynchronous threshold detector with DC power-free pulse discrimination for impulse UWB receiver. - Lechang Liu; Yoshio Miyamoto; Zhiwei Zhou; Kosuke Sakaida; Jisun Ryu; Koichi Ishida; Makoto Takamiya; Takayasu Sakurai (ASP-DAC, 2009)

Switched Resonant Clocking (SRC) scheme enabling dynamic frequency scaling and low-speed test. - Katsuyuki Ikeuchi; Kosuke Sakaida; Koichi Ishida; Takayasu Sakurai; Makoto Takamiya (CICC, 2009)

Inductor design of 20-V boost converter for low power 3D solid state drive with NAND flash memories. - Tadashi Yasufuku; Koichi Ishida; Shinji Miyamoto; Hiroto Nakai; Makoto Takamiya; Takayasu Sakurai; Ken Takeuchi (ISLPED, 2009)

A stretchable EMI measurement sheet with 8×8 coil array, 2V organic CMOS decoder, and -70dBm EMI detection circuits in 0.18¼m CMOS. - Koichi Ishida; Naoki Masunaga; Zhiwei Zhou; Tadashi Yasufuku; Tsuyoshi Sekitani; Ute Zschieschang; Hagen Klauk; Makoto Takamiya; Takao Someya; Takayasu Sakurai (ISSCC, 2009)

A 1.8V 30nJ adaptive program-voltage (20V) generator for 3D-integrated NAND flash SSD. - Koichi Ishida; Tadashi Yasufuku; Shinji Miyamoto; Hiroto Nakai; Makoto Takamiya; Takayasu Sakurai; Ken Takeuchi (ISSCC, 2009)

A 100 Mbps, 4.1 pJ/bit Threshold Detection-Based Impulse Radio UWB Transceiver in 90 nm CMOS. - Lechang Liu; Yoshio Miyamoto; Zhiwei Zhou; Kosuke Sakaida; Jisun Ryu; Koichi Ishida; Makoto Takamiya; Takayasu Sakurai (IEICE Trans. Electron., 2009)

An On-Chip Noise Canceller with High Voltage Supply Lines for Nanosecond-Range Power Supply Noise. - Yasumi Nakamura; Makoto Takamiya; Takayasu Sakurai (IEICE Trans. Electron., 2009)

Low Power VLSI Circuit Design with Fine-Grain Voltage Engineering. - Makoto Takamiya; Takayasu Sakurai (IPSJ Trans. Syst. LSI Des. Methodol., 2009)

A 25-mV-Sensitivity 2-Gb/s Optimum-Logic-Threshold Capacitive-Coupling Receiver for Wireless Wafer Probing Systems. - Gil-Su Kim; Makoto Takamiya; Takayasu Sakurai (IEEE Trans. Circuits Syst. II Express Briefs, 2009)

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. - Lechang Liu; Makoto Takamiya; Tsuyoshi Sekitani; Yoshiaki Noguchi; Shintaro Nakano; Koichiro Zaitsu; Tadahiro Kuroda; Takao Someya; Takayasu Sakurai (IEEE Trans. Circuits Syst. I Regul. Pap., 2009)

3D stacked buck converter with 15μm thick spiral inductor on silicon interposer for fine-grain power-supply voltage control in SiP's. - Koichi Ishida; Koichi Takemura; Kazuhiro Baba; Makoto Takamiya; Takayasu Sakurai (3DIC, 2010)

A high-speed, low-power capacitive-coupling transceiver for wireless wafer-level testing systems. - Gil-Su Kim; Katsuyuki Ikeuchi; Mutsuo Daito; Makoto Takamiya; Takayasu Sakurai (3DIC, 2010)

0.18-V input charge pump with forward body biasing in startup circuit using 65nm CMOS. - Po-Hung Chen; Koichi Ishida; Xin Zhang 025; Yasuaki Okuma; Yoshikatsu Ryu; Makoto Takamiya; Takayasu Sakurai (CICC, 2010)

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. - Naoki Masunaga; Koichi Ishida; Makoto Takamiya; Takayasu Sakurai (CICC, 2010)

0.5-V input digital LDO with 98.7% current efficiency and 2.7-µA quiescent current in 65nm CMOS. - Yasuyuki Okuma; Koichi Ishida; Yoshikatsu Ryu; Xin Zhang 025; Po-Hung Chen; Kazunori Watanabe; Makoto Takamiya; Takayasu Sakurai (CICC, 2010)

Misleading energy and performance claims in sub/near threshold digital systems. - Yu Pu; Xin Zhang 025; Jim Huang; Atsushi Muramatsu; Masahiro Nomura; Koji Hirairi; Hidehiro Takata; Taro Sakurabayashi; Shinji Miyano; Makoto Takamiya; Takayasu Sakurai (ICCAD, 2010)

Design of large area electronics with organic transistors. - Makoto Takamiya; Koichi Ishida; Tsuyoshi Sekitani; Takao Someya; Takayasu Sakurai (ICCAD, 2010)

User Customizable Logic Paper (UCLP) with organic sea-of-transmission-gates (SOTG) architecture and ink-jet printed interconnects. - Koichi Ishida; Naoki Masunaga; Ryo Takahashi; Tsuyoshi Sekitani; Shigeki Shino; Ute Zschieschang; Hagen Klauk; Makoto Takamiya; Takao Someya; Takayasu Sakurai (ISSCC, 2010)

A 1.76 mW, 100 Mbps Impulse Radio UWB Receiver with Multiple Sampling Correlators Eliminating Need for Phase Synchronization in 65-nm CMOS. - Lechang Liu; Zhiwei Zhou; Takayasu Sakurai; Makoto Takamiya (IEICE Trans. Electron., 2010)

Inductor and TSV Design of 20-V Boost Converter for Low Power 3D Solid State Drive with NAND Flash Memories. - Tadashi Yasufuku; Koichi Ishida; Shinji Miyamoto; Hiroto Nakai; Makoto Takamiya; Takayasu Sakurai; Ken Takeuchi (IEICE Trans. Electron., 2010)

Difficulty of Power Supply Voltage Scaling in Large Scale Subthreshold Logic Circuits. - Tadashi Yasufuku; Taro Niiyama; Piao Zhe; Koichi Ishida; Masami Murakata; Makoto Takamiya; Takayasu Sakurai (IEICE Trans. Electron., 2010)

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. - Koichi Ishida; Naoki Masunaga; Zhiwei Zhou; Tadashi Yasufuku; Tsuyoshi Sekitani; Ute Zschieschang; Hagen Klauk; Makoto Takamiya; Takao Someya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2010)

Through Silicon Capacitive Coupling (TSCC) interface for 3D stacked dies. - Katsuyuki Ikeuchi; Makoto Takamiya; Takayasu Sakurai (3DIC, 2011)

An on-chip characterizing system for within-die delay variation measurement of individual standard cells in 65-nm CMOS. - Xin Zhang 025; Koichi Ishida; Makoto Takamiya; Takayasu Sakurai (ASP-DAC, 2011)

A 80-mV input, fast startup dual-mode boost converter with charge-pumped pulse generator for energy harvesting. - Po-Hung Chen; Koichi Ishida; Xin Zhang 025; Yasuyuki Okuma; Yoshikatsu Ryu; Makoto Takamiya; Takayasu Sakurai (A-SSCC, 2011)

A closed-form expression for estimating minimum operating voltage (VDDmin) of CMOS logic gates. - Hiroshi Fuketa; Satoshi Iida; Tadashi Yasufuku; Makoto Takamiya; Masahiro Nomura; Hirofumi Shinohara; Takayasu Sakurai (DAC, 2011)

12% Power reduction by within-functional-block fine-grained adaptive dual supply voltage control in logic circuits with 42 voltage domains. - Atsushi Muramatsu; Tadashi Yasufuku; Masahiro Nomura; Makoto Takamiya; Hirofumi Shinohara; Takayasu Sakurai (ESSCIRC, 2011)

12.7-times energy efficiency increase of 16-bit integer unit by power supply voltage (VDD) scaling from 1.2v to 310mv enabled by contention-less flip-flops (CLFF) and separated VDD between flip-flops and combinational logics. - Hiroshi Fuketa; Koji Hirairi; Tadashi Yasufuku; Makoto Takamiya; Masahiro Nomura; Hirofumi Shinohara; Takayasu Sakurai (ISLPED, 2011)

Reduction of minimum operating voltage (VDDmin) of CMOS logic circuits with post-fabrication automatically selective charge injection. - Kentaro Honda; Katsuyuki Ikeuchi; Masahiro Nomura; Makoto Takamiya; Takayasu Sakurai (ISLPED, 2011)

Investigation of determinant factors of minimum operating voltage of logic gates in 65-nm CMOS. - Tadashi Yasufuku; Satoshi Iida; Hiroshi Fuketa; Koji Hirairi; Masahiro Nomura; Makoto Takamiya; Takayasu Sakurai (ISLPED, 2011)

A 95mV-startup step-up converter with Vth-tuned oscillator by fixed-charge programming and capacitor pass-on scheme. - Po-Hung Chen; Koichi Ishida; Katsuyuki Ikeuchi; Xin Zhang 025; Kentaro Honda; Yasuyuki Okuma; Yoshikatsu Ryu; Makoto Takamiya; Takayasu Sakurai (ISSCC, 2011)

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. - Koichi Ishida; Tsung-Ching Huang; Kentaro Honda; Tsuyoshi Sekitani; Hiroyoshi Nakajima; Hiroki Maeda; Makoto Takamiya; Takao Someya; Takayasu Sakurai (ISSCC, 2011)

0.18-V Input Charge Pump with Forward Body Bias to Startup Boost Converter for Energy Harvesting Applications. - Po-Hung Chen; Koichi Ishida; Xin Zhang 025; Yasuyuki Okuma; Yoshikatsu Ryu; Makoto Takamiya; Takayasu Sakurai (IEICE Trans. Electron., 2011)

1 Gb/s, 50 µm × 50 µm Pads on Board Wireless Connector Based on Track-and-Charge Scheme Allowing Contacted Signaling. - Katsuyuki Ikeuchi; Hideki Kusamitsu; Mutsuo Daito; Gil-Su Kim; Makoto Takamiya; Takayasu Sakurai (IEICE Trans. Electron., 2011)

0.6 V Voltage Shifter and Clocked Comparator for Sampling Correlation-Based Impulse Radio UWB Receiver. - Lechang Liu; Takayasu Sakurai; Makoto Takamiya (IEICE Trans. Electron., 2011)

0.5-V Input Digital Low-Dropout Regulator (LDO) with 98.7% Current Efficiency in 65 nm CMOS. - Yasuyuki Okuma; Koichi Ishida; Yoshikatsu Ryu; Xin Zhang 025; Po-Hung Chen; Kazunori Watanabe; Makoto Takamiya; Takayasu Sakurai (IEICE Trans. Electron., 2011)

Power Supply Voltage Dependence of Within-Die Delay Variation of Regular Manual Layout and Irregular Place-and-Route Layout. - Tadashi Yasufuku; Yasumi Nakamura; Piao Zhe; Makoto Takamiya; Takayasu Sakurai (IEICE Trans. Electron., 2011)

A Variable Output Voltage Switched-Capacitor DC-DC Converter with Pulse Density and Width Modulation (PDWM) for 57% Ripple Reduction at Low Output Voltage. - Xin Zhang 025; Yu Pu; Koichi Ishida; Yoshikatsu Ryu; Yasuyuki Okuma; Po-Hung Chen; Takayasu Sakurai; Makoto Takamiya (IEICE Trans. Electron., 2011)

Capacitively Coupled Non-Contact Probing Circuits for Membrane-Based Wafer-Level Simultaneous Testing. - Mutsuo Daito; Yoshiro Nakata; Satoshi Sasaki; Hiroyuki Gomyo; Hideki Kusamitsu; Yoshio Komoto; Kunihiko Iizuka; Katsuyuki Ikeuchi; Gil-Su Kim; Makoto Takamiya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2011)

User Customizable Logic Paper (UCLP) With Sea-Of Transmission-Gates (SOTG) of 2-V Organic CMOS and Ink-Jet Printed Interconnects. - Koichi Ishida; Naoki Masunaga; Ryo Takahashi; Tsuyoshi Sekitani; Shigeki Shino; Ute Zschieschang; Hagen Klauk; Makoto Takamiya; Takao Someya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2011)

1.8 V Low-Transient-Energy Adaptive Program-Voltage Generator Based on Boost Converter for 3D-Integrated NAND Flash SSD. - Koichi Ishida; Tadashi Yasufuku; Shinji Miyamoto; Hiroto Nakai; Makoto Takamiya; Takayasu Sakurai; Ken Takeuchi (IEEE J. Solid State Circuits, 2011)

A Charge-Domain Auto- and Cross-Correlation Based Data Synchronization Scheme With Power- and Area-Efficient PLL for Impulse Radio UWB Receiver. - Lechang Liu; Takayasu Sakurai; Makoto Takamiya (IEEE J. Solid State Circuits, 2011)

Post-Silicon Clock Deskew Employing Hot-Carrier Injection Trimming With On-Chip Skew Monitoring and Auto-Stressing Scheme for Sub/Near Threshold Digital Circuits. - Yu Pu; Xin Zhang 025; Katsuyuki Ikeuchi; Atsushi Muramatsu; Atsushi Kawasumi; Makoto Takamiya; Masahiro Nomura; Hirofumi Shinohara; Takayasu Sakurai (IEEE Trans. Circuits Syst. II Express Briefs, 2011)

A 120-mV input, fully integrated dual-mode charge pump in 65-nm CMOS for thermoelectric energy harvester. - Po-Hung Chen; Koichi Ishida; Xin Zhang 025; Yasuyuki Okuma; Yoshikatsu Ryu; Makoto Takamiya; Takayasu Sakurai (ASP-DAC, 2012)

Increase of crosstalk noise due to imbalanced threshold voltage between NMOS and PMOS in sub-threshold logic circuits. - Hiroshi Fuketa; Ryo Takahashi; Makoto Takamiya; Masahiro Nomura; Hirofumi Shinohara; Takayasu Sakurai (CICC, 2012)

2.1 Times increase of drain efficiency by dual supply voltage scheme in 315MHz class-F Power amplifier at output power of -20dBm. - Shunta Iguchi; Akira Saito; Kazunori Watanabe; Takayasu Sakurai; Makoto Takamiya (ESSCIRC, 2012)

0.35V, 4.1μW, 39MHz crystal oscillator in 40nm CMOS. - Akira Saito; Yun Fei Zheng; Kazunori Watanabe; Takayasu Sakurai; Makoto Takamiya (ISLPED, 2012)

24% Power reduction by post-fabrication dual supply voltage control of 64 voltage domains in VDDmin limited ultra low voltage logic circuits. - 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 (ISQED, 2012)

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. - Koji Hirairi; Yasuyuki Okuma; Hiroshi Fuketa; Tadashi Yasufuku; Makoto Takamiya; Masahiro Nomura; Hirofumi Shinohara; Takayasu Sakurai (ISSCC, 2012)

Insole pedometer with piezoelectric energy harvester and 2V organic digital and analog circuits. - 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; et al. (ISSCC, 2012)

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. - Akira Saito; Kentaro Honda; Yun Fei Zheng; Shunta Iguchi; Kazunori Watanabe; Takayasu Sakurai; Makoto Takamiya (VLSIC, 2012)

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. - Xin Zhang 025; Po-Hung Chen; Yoshikatsu Ryu; Koichi Ishida; Yasuyuki Okuma; Kazunori Watanabe; Takayasu Sakurai; Makoto Takamiya (VLSIC, 2012)

A 315 MHz Power-Gated Ultra Low Power Transceiver in 40 nm CMOS for Wireless Sensor Network. - Lechang Liu; Takayasu Sakurai; Makoto Takamiya (IEICE Trans. Electron., 2012)

EMI Camera LSI (EMcam) with On-Chip Loop Antenna Matrix to Measure EMI Noise Spectrum and Distribution. - Naoki Masunaga; Koichi Ishida; Takayasu Sakurai; Makoto Takamiya (IEICE Trans. Electron., 2012)

Startup Techniques for 95 mV Step-Up Converter by Capacitor Pass-On Scheme and VTH-Tuned Oscillator With Fixed Charge Programming. - Po-Hung Chen; Koichi Ishida; Katsuyuki Ikeuchi; Xin Zhang 025; Kentaro Honda; Yasuyuki Okuma; Yoshikatsu Ryu; Makoto Takamiya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2012)

An 80 mV Startup Dual-Mode Boost Converter by Charge-Pumped Pulse Generator and Threshold Voltage Tuned Oscillator With Hot Carrier Injection. - Po-Hung Chen; Xin Zhang 025; Koichi Ishida; Yasuyuki Okuma; Yoshikatsu Ryu; Makoto Takamiya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2012)

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. - Koichi Ishida; Tsung-Ching Huang; Kentaro Honda; Tsuyoshi Sekitani; Hiroyoshi Nakajima; Hiroki Maeda; Makoto Takamiya; Takao Someya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2012)

Large Within-Die Gate Delay Variations in Sub-Threshold Logic Circuits at Low Temperature. - Ryo Takahashi; Hidehiro Takata; Tadashi Yasufuku; Hiroshi Fuketa; Makoto Takamiya; Masahiro Nomura; Hirofumi Shinohara; Takayasu Sakurai (IEEE Trans. Circuits Syst. II Express Briefs, 2012)

A 1-V-Input Switched-Capacitor Voltage Converter With Voltage-Reference-Free Pulse-Density Modulation. - Xin Zhang 025; Yu Pu; Koichi Ishida; Yoshikatsu Ryu; Yasuyuki Okuma; Po-Hung Chen; Kazunori Watanabe; Takayasu Sakurai; Makoto Takamiya (IEEE Trans. Circuits Syst. II Express Briefs, 2012)

On-Chip Measurement System for Within-Die Delay Variation of Individual Standard Cells in 65-nm CMOS. - Xin Zhang 025; Koichi Ishida; Hiroshi Fuketa; Makoto Takamiya; Takayasu Sakurai (IEEE Trans. Very Large Scale Integr. Syst., 2012)

Variation-aware subthreshold logic circuit design. - Hiroshi Fuketa; Ryo Takahashi; Makoto Takamiya; Masahiro Nomura; Hirofumi Shinohara; Takayasu Sakurai (ASICON, 2013)

315MHz OOK transceiver with 38-µW receiver and 36-µW transmitter in 40-nm CMOS. - Shunta Iguchi; Akira Saito; Kentaro Honda; Yun Fei Zheng; Kazunori Watanabe; Takayasu Sakurai; Makoto Takamiya (ASP-DAC, 2013)

A low voltage buck DC-DC converter using on-chip gate boost technique in 40nm CMOS. - Xin Zhang 025; Po-Hung Chen; Yoshikatsu Ryu; Koichi Ishida; Yasuyuki Okuma; Kazunori Watanabe; Takayasu Sakurai; Makoto Takamiya (ASP-DAC, 2013)

A 40-nm 8T SRAM with selective source line control of read bitlines and address preset structure. - Shusuke Yoshimoto; Shinji Miyano; Makoto Takamiya; Hirofumi Shinohara; Hiroshi Kawaguchi 001; Masahiko Yoshimoto (CICC, 2013)

Electrical artificial skin using ultraflexible organic transistor. - Tsuyoshi Sekitani; Tomoyuki Yokota; Makoto Takamiya; Takayasu Sakurai; Takao Someya (DAC, 2013)

Reducing IR drop in 3D integration to less than 1/4 using Buck Converter on Top die (BCT) scheme. - Yasuhiro Shinozuka; Hiroshi Fuketa; Koichi Ishida; Futoshi Furuta; Kenichi Osada; Kenichi Takeda; Makoto Takamiya; Takayasu Sakurai (ISQED, 2013)

Intermittent resonant clocking enabling power reduction at any clock frequency for 0.37V 980kHz near-threshold logic circuits. - Hiroshi Fuketa; Masahiro Nomura; Makoto Takamiya; Takayasu Sakurai (ISSCC, 2013)

1µm-thickness 64-channel surface electromyogram measurement sheet with 2V organic transistors for prosthetic hand control. - Hiroshi Fuketa; Kazuaki Yoshioka; Yasuhiro Shinozuka; Koichi Ishida; Tomoyuki Yokota; Naoji Matsuhisa; Yusuke Inoue 002; Masaki Sekino; Tsuyoshi Sekitani; Makoto Takamiya; Takao Someya; Takayasu Sakurai (ISSCC, 2013)

Large-area and flexible sensors with organic transistors. - Hiroshi Fuketa; Koichi Ishida; Tsuyoshi Sekitani; Makoto Takamiya; Takao Someya; Takayasu Sakurai (IWASI, 2013)

Increase of Crosstalk Noise Due to Imbalanced Threshold Voltage Between nMOS and pMOS in Subthreshold Logic Circuits. - Hiroshi Fuketa; Ryo Takahashi; Makoto Takamiya; Masahiro Nomura; Hirofumi Shinohara; Takayasu Sakurai (IEEE J. Solid State Circuits, 2013)

Insole Pedometer With Piezoelectric Energy Harvester and 2 V Organic 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; et al. (IEEE J. Solid State Circuits, 2013)

Minimizing Energy of Integer Unit by Higher Voltage Flip-Flop: VDDmin-Aware Dual Supply Voltage Technique. - Hiroshi Fuketa; Koji Hirairi; Tadashi Yasufuku; Makoto Takamiya; Masahiro Nomura; Hirofumi Shinohara; Takayasu Sakurai (IEEE Trans. Very Large Scale Integr. Syst., 2013)

An 85-mV input, 50-µs startup fully integrated voltage multiplier with passive clock boost using on-chip transformers for energy harvesting. - Hiroshi Fuketa; Youichi Momiyama; Atsushi Okamoto; Tsuyoshi Sakata; Makoto Takamiya; Takayasu Sakurai (ESSCIRC, 2014)

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. - Hiroshi Fuketa; Kazuaki Yoshioka; Tomoyuki Yokota; Wakako Yukita; Mari Koizumi; Masaki Sekino; Tsuyoshi Sekitani; Makoto Takamiya; Takao Someya; Takayasu Sakurai (ISSCC, 2014)

Flexible, large-area, and distributed organic electronics closely contacted with skin for healthcare applications. - Makoto Takamiya; Hiroshi Fuketa; Koichi Ishida; Tomoyuki Yokota; Tsuyoshi Sekitani; Takao Someya; Takayasu Sakurai (MWSCAS, 2014)

92% start-up time reduction by variation-tolerant chirp injection (CI) and negative resistance booster (NRB) in 39MHz crystal oscillator. - Shunta Iguchi; Hiroshi Fuketa; Takayasu Sakurai; Makoto Takamiya (VLSIC, 2014)

Intermittent Resonant Clocking Enabling Power Reduction at Any Clock Frequency for Near/Sub-Threshold Logic Circuits. - Hiroshi Fuketa; Masahiro Nomura; Makoto Takamiya; Takayasu Sakurai (IEEE J. Solid State Circuits, 2014)

A 0.6 V Input CCM/DCM Operating Digital Buck Converter in 40 nm CMOS. - Xin Zhang 025; Po-Hung Chen; Yasuyuki Okuma; Koichi Ishida; Yoshikatsu Ryu; Kazunori Watanabe; Takayasu Sakurai; Makoto Takamiya (IEEE J. Solid State Circuits, 2014)

1 µm-Thickness Ultra-Flexible and High Electrode-Density Surface Electromyogram Measurement Sheet With 2 V Organic Transistors for Prosthetic Hand Control. - Hiroshi Fuketa; Kazuaki Yoshioka; Yasuhiro Shinozuka; Koichi Ishida; Tomoyuki Yokota; Naoji Matsuhisa; Yusuke Inoue 002; Masaki Sekino; Tsuyoshi Sekitani; Makoto Takamiya; Takao Someya; Takayasu Sakurai (IEEE Trans. Biomed. Circuits Syst., 2014)

Design Method of Class-F Power Amplifier With Output Power of -20 dBm and Efficient Dual Supply Voltage Transmitter. - Shunta Iguchi; Akira Saito; Kazunori Watanabe; Takayasu Sakurai; Makoto Takamiya (IEEE Trans. Circuits Syst. I Regul. Pap., 2014)

Analysis to optimize sensitivity of RF energy harvester with voltage boost circuit. - Dan Luo; Hiroshi Fuketa; Kenichi Matsunaga; Hiroki Morimura; Makoto Takamiya; Takayasu Sakurai (ECCTD, 2015)

248pW, 0.11mV/°C glitch-free programmable voltage detector with multiple voltage duplicator for energy harvesting. - Teruki Someya; Hiroshi Fuketa; Kenichi Matsunaga; Hiroki Morimura; Takayasu Sakurai; Makoto Takamiya (ESSCIRC, 2015)

Optimal design to maximize efficiency of single-inductor multiple-output buck converters in discontinuous conduction mode for IoT applications. - Yoshitaka Yamauchi; Yuki Yanagihara; Hiroshi Fuketa; Takayasu Sakurai; Makoto Takamiya (ICICDT, 2015)

16.4 Energy-autonomous fever alarm armband integrating fully flexible solar cells, piezoelectric speaker, temperature detector, and 12V organic complementary FET circuits. - Hiroshi Fuketa; Masamune Hamamatsu; Tomoyuki Yokota; Wakako Yukita; Teruki Someya; Tsuyoshi Sekitani; Makoto Takamiya; Takao Someya; Takayasu Sakurai (ISSCC, 2015)

F4: Building the Internet of Everything (IoE): Low-power techniques at the circuit and system levels. - Marian Verhelst; Dennis Sylvester; Makoto Takamiya; Mike Clinton; Kathy Wilcox; Koichi Nose (ISSCC, 2015)

Energy efficient design and energy harvesting for energy autonomous systems. - Makoto Takamiya (VLSI-DAT, 2015)

Jussi Ryynänen Introduction to the December Special Issue on the 2015 IEEE International Solid-State Circuits Conference. - Makoto Takamiya; Jieh-Tsorng Wu; Jussi Ryynänen; Kenichi Okada 001; Jaeha Kim (IEEE J. Solid State Circuits, 2015)

Wireless Power Transfer With Zero-Phase-Difference Capacitance Control. - Shunta Iguchi; Pyungwoo Yeon; Hiroshi Fuketa; Koichi Ishida; Takayasu Sakurai; Makoto Takamiya (IEEE Trans. Circuits Syst. I Regul. Pap., 2015)

56-Level programmable voltage detector in steps of 50mV for battery management. - Teruki Someya; Kenichi Matsunaga; Hiroki Morimura; Takayasu Sakurai; Makoto Takamiya (A-SSCC, 2016)

Interventional placement of thin coil shaped implants powered wirelessly for monitoring vital signals and controlling abnormal activities by electro-stimulation. - Hidetoshi Ohta; Masanobu Honda; Makoto Takamiya (EMBC, 2016)

5.7 A 39.25MHz 278dB-FOM 19µW LDO-free stacked-amplifier crystal oscillator (SAXO) operating at I/O voltage. - Shunta Iguchi; Takayasu Sakurai; Makoto Takamiya (ISSCC, 2016)

Variation-Tolerant Quick-Start-Up CMOS Crystal Oscillator With Chirp Injection and Negative Resistance Booster. - Shunta Iguchi; Hiroshi Fuketa; Takayasu Sakurai; Makoto Takamiya (IEEE J. Solid State Circuits, 2016)

Buck converter with higher than 87% efficiency over 500nA to 20mA load current range for IoT sensor nodes by Clocked Hysteresis Control. - Chung-Shiang Wu; Makoto Takamiya; Takayasu Sakurai (CICC, 2017)

Modeling of 3-level buck converters in discontinuous conduction mode for stand-by mode power supply. - Yoshitaka Yamauchi; Toru Sai; Takayasu Sakurai; Makoto Takamiya (ISCAS, 2017)

F1: Integrated voltage regulators for SoC and emerging IoT systems. - Makoto Takamiya; Yogesh K. Ramadass; Keith A. Bowman; Gerard Villar Pique; Shuichi Nagai; Dennis Sylvester (ISSCC, 2017)

Programmable Neuron Array Based on a 2-Transistor Multiplier Using Organic Floating-Gate for Intelligent Sensors. - Islam A. K. M. Mahfuzul; Masamune Hamamatsu; Tomoyuki Yokota; Sunghoon Lee; Wakako Yukita; Makoto Takamiya; Takao Someya; Takayasu Sakurai (IEEE J. Emerg. Sel. Topics Circuits Syst., 2017)

Design and Analysis of Ultra-Low Power Glitch-Free Programmable Voltage Detector Based on Multiple Voltage Copier. - Teruki Someya; Hiroshi Fuketa; Kenichi Matsunaga; Hiroki Morimura; Takayasu Sakurai; Makoto Takamiya (IEICE Trans. Electron., 2017)

Luciola: A Millimeter-Scale Light-Emitting Particle Moving in Mid-Air Based On Acoustic Levitation and Wireless Powering. - Yuki Uno; Hao Qiu; Toru Sai; Shunta Iguchi; Yota Mizutani; Takayuki Hoshi; Yoshihiro Kawahara; Yasuaki Kakehi; Makoto Takamiya (Proc. ACM Interact. Mob. Wearable Ubiquitous Technol., 2017)

A Low-Power CMOS Crystal Oscillator Using a Stacked-Amplifier Architecture. - Shunta Iguchi; Takayasu Sakurai; Makoto Takamiya (IEEE J. Solid State Circuits, 2017)

A 13nW temperature-to-digital converter utilizing sub-threshold MOSFET operation at sub-thermal drain voltage. - Teruki Someya; Islam A. K. M. Mahfuzul; Takayasu Sakurai; Makoto Takamiya (CICC, 2018)

Session 27 overview: Power-converter techniques: Power management subcommittee. - Makoto Takamiya; Yen Hsun Hsu; Axel Thomsen (ISSCC, 2018)

Luciola: a light-emitting particle moving in mid-air based on ultrasonic levitation and wireless powering. - Hao Qiu; Yuki Uno; Toru Sai; Shunta Iguchi; Yota Mizutani; Takayuki Hoshi; Yoshihiro Kawahara; Yasuaki Kakehi; Makoto Takamiya (SIGGRAPH ASIA Emerging Technologies, 2018)

2/3 and 1/2 Reconfigurable Switched Capacitor DC-DC Converter With 92.9% Efficiency at 62 mW/mm2 Using Driver Amplitude Doubler. - Toru Sai; Yoshitaka Yamauchi; Hajime Kando; Tatsuya Funaki; Takayasu Sakurai; Makoto Takamiya (IEEE Trans. Circuits Syst. II Express Briefs, 2018)

Clocked Hysteresis Control Scheme With Power-Law Frequency Scaling in Buck Converter to Improve Light-Load Efficiency for IoT Sensor Nodes. - Chung-Shiang Wu; Makoto Takamiya; Takayasu Sakurai (IEEE Trans. Very Large Scale Integr. Syst., 2018)

A 500-Mbps Digital Isolator Circuits using Counter-Pulse Immune Receiver Scheme for Power Electronics. - Tsukasa Kagaya; Koutaro Miyazaki; Makoto Takamiya; Takayasu Sakurai (ICICDT, 2019)

CNN-based Approach for Estimating Degradation of Power Devices by Gate Waveform Monitoring. - Koutaro Miyazaki; Yang Lo; A. K. M. Mahfuzul Islam; Katsuhiro Hata; Makoto Takamiya; Takayasu Sakurai (ICICDT, 2019)

Digital Active Gate Drive with Optimal Switching Patterns to Adapt to Sinusoidal Output Current in a Full Bridge Inverter Circuit. - Yu-Shan Cheng; Daiki Yamaguchi; Tomoyuki Mannen; Keiji Wada; Toru Sai; Koutaro Miyazaki; Makoto Takamiya; Takayasu Sakurai (IECON, 2019)

Coupling-Dependent Data Flipping in Wireless Power and Data Transfer System. - Hao Qiu; Takayasu Sakurai; Makoto Takamiya (ISCAS, 2019)

An 11-nW CMOS Temperature-to-Digital Converter Utilizing Sub-Threshold Current at Sub-Thermal Drain Voltage. - Teruki Someya; A. K. M. Mahfuzul Islam; Takayasu Sakurai; Makoto Takamiya (IEEE J. Solid State Circuits, 2019)

A 0.90-4.39-V Detection Voltage Range, 56-Level Programmable Voltage Detector Using Fine Voltage-Step Subtraction for Battery Management. - Teruki Someya; Kenichi Matsunaga; Hiroki Morimura; Takayasu Sakurai; Makoto Takamiya (IEEE Trans. Circuits Syst. I Regul. Pap., 2019)

An Untethered 216-mg Insect-Sized Jumping Robot with Wireless Power Transmission. - Riccy Kurniawan; Tamaki Fukudome; Hao Qiu; Makoto Takamiya; Yoshihiro Kawahara; Jinkyu Yang; Ryuma Niiyama (IROS, 2020)

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. - Hao Qiu; Toru Sai; Makoto Takamiya (VLSI Circuits, 2020)

Single-Inductor Dual-Input Dual-Output Battery-PV Hybrid System With 2-D Adaptive On-Time Control for Internet of Things. - Hui-Hsuan Lee; Chi-Wei Liu; Makoto Takamiya; Po-Hung Chen (IEEE Trans. Circuits Syst. I Regul. Pap., 2020)

A 6.78 MHz Wireless Power Transfer System for Simultaneous Charging of Multiple Receivers with Maximum Efficiency using Adaptive Magnetic Field Distributor IC. - Hao Qiu; Makoto Takamiya (VLSI Circuits, 2021)

A multi-path switched-capacitor-inductor hybrid DC-DC converter with reduced inductor loss and extended voltage conversion range. - Qiaobo Ma; Xiongjie Zhang; Yang Jiang 002; Katsuhiro Hata; Makoto Takamiya; Man-Kay Law; Pui-In Mak; Rui Paulo Martins (IEICE Electron. Express, 2021)

Structure-Reconfigurable Power Amplifier (SR-PA) and 0X/1X Regulating Rectifier for Adaptive Power Control in Wireless Power Transfer System. - Fu-Bin Yang; Jonathan Fuh; Yu-Hsien Li; Makoto Takamiya; Po-Hung Chen (IEEE J. Solid State Circuits, 2021)

Analysis and Mitigation of Coupling-Dependent Data Flipping in Wireless Power and Data Transfer System. - Hao Qiu; Yuntao Jiang; Yi Shi; Takayasu Sakurai; Makoto Takamiya (IEEE Trans. Circuits Syst. I Regul. Pap., 2021)

A 6.78-MHz Multiple-Transmitter Wireless Power Transfer System With Efficiency Maximization by Adaptive Magnetic Field Adder IC. - Hao Qiu; Takayasu Sakurai; Makoto Takamiya (IEEE J. Solid State Circuits, 2022)

High-Speed Searching of Optimum Switching Pattern for Digital Active Gate Drive to Adapt to Various Load Conditions. - Yu-Shan Cheng; Daiki Yamaguchi; Tomoyuki Mannen; Keiji Wada; Toru Sai; Koutaro Miyazaki; Makoto Takamiya; Takayasu Sakurai (IEEE Trans. Ind. Electron., 2022)

Foreword. - Makoto Takamiya (IEICE Trans. Electron., 2022)

Transmitter IC Enabling Magnetic Field Shaping for High-Efficiency Wireless Charging of Multiple Receivers. - Hao Qiu; Xusheng Zhang; Junji Chen; Yi Shi; Makoto Takamiya (ASICON, 2023)

Digital Gate ICs for Driving and Sensing Power Devices to Achieve Low-Loss, Low-Noise, and Highly Reliable Power Electronic Systems. - Dibo Zhang; Kohei Horii; Katsuhiro Hata; Makoto Takamiya (CICC, 2023)

IGBT Power Module Design for Suppressing Gate Voltage Spike at Digital Gate Control. - Zaiqi Lou; Thatree Mamee; Katsuhiro Hata; Makoto Takamiya; Shinichi Nishizawa; Wataru Saito (IEEE Access, 2023)

Integrated Imager and 3.22 μs/Kernel-Latency All-Digital In-Imager Global-Parallel Binary Convolutional Neural Network Accelerator for Image Processing. - Ruizhi Wang; Cheng-Hsuan Wu; Makoto Takamiya (IEEE Access, 2023)

Floating-Domain Integrated GaN Driver Techniques for DC-DC Converters: A Review. - Xuchu Mu; Guangshu Zhao; Anyang Zhao; Yang Jiang 002; Man-Kay Law; Makoto Takamiya; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Circuits Syst. I Regul. Pap., 2023)

A 10.5 W, 93% Efficient Dual-Path Hybrid (DPH)-Based DC-DC Converter Incorporating a Continuous-Current-Input Switched-Capacitor Stage and Enhanced IL Reduction for 12 V/24 V Inputs. - Qiaobo Ma; Xiongjie Zhang; Anyang Zhao; Huihua Li; Yang Jiang 002; Man-Kay Law; Makoto Takamiya; Rui Paulo Martins; Pui-In Mak (IEEE Trans. Circuits Syst. I Regul. Pap., 2023)

A 6.78-MHz Wireless Power Transfer System With Dual-Output Resonant Current-Mode Regulating Rectifier and Transmission Power Regulation. - Dao-Han Yao; Tzu-Ning Liu; Makoto Takamiya; Po-Hung Chen (IEEE Trans. Circuits Syst. I Regul. Pap., 2023)

Estimating of IGBT Bond Wire Lift-Off Trend Using Convolutional Neural Network (CNN). - Thatree Mamee; Zaiqi Lou; Katsuhiro Hata; Makoto Takamiya; Takayasu Sakurai; Shinichi Nishizawa; Wataru Saito (IEEE Access, 2024)

Ultrahigh framerate vision chip featuring central-based edge detection processed by all-digital in-imager global-parallel processing architecture. - Ruizhi Wang; Yaogan Liang; Makoto Takamiya (IEICE Electron. Express, 2024)

A 6.78-MHz Coupling Coefficient Sensorless Wireless Power Transfer System Charging Multiple Receivers With Efficiency Maximization by Adaptive Magnetic Field Distributor IC. - Hao Qiu; Xusheng Zhang; Junji Chen; Makoto Takamiya; Yi Shi (IEEE Trans. Circuits Syst. I Regul. Pap., 2024)