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Takayasu Sakurai
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2020 – today
- 2024
- [j101]Thatree Mamee
, Zaiqi Lou
, Katsuhiro Hata
, Makoto Takamiya
, Takayasu Sakurai, Shinichi Nishizawa
, Wataru Saito
:
Estimating of IGBT Bond Wire Lift-Off Trend Using Convolutional Neural Network (CNN). IEEE Access 12: 96936-96945 (2024) - 2022
- [j100]Hao Qiu
, Takayasu Sakurai, Makoto Takamiya
:
A 6.78-MHz Multiple-Transmitter Wireless Power Transfer System With Efficiency Maximization by Adaptive Magnetic Field Adder IC. IEEE J. Solid State Circuits 57(8): 2390-2403 (2022) - [j99]Yu-Shan Cheng
, Daiki Yamaguchi
, Tomoyuki Mannen
, Keiji Wada
, Toru Sai
, Koutaro Miyazaki, Makoto Takamiya
, Takayasu Sakurai:
High-Speed Searching of Optimum Switching Pattern for Digital Active Gate Drive to Adapt to Various Load Conditions. IEEE Trans. Ind. Electron. 69(5): 5185-5194 (2022) - 2021
- [j98]Hao Qiu
, Yuntao Jiang, Yi Shi, Takayasu Sakurai, Makoto Takamiya
:
Analysis and Mitigation of Coupling-Dependent Data Flipping in Wireless Power and Data Transfer System. IEEE Trans. Circuits Syst. I Regul. Pap. 68(12): 5182-5193 (2021)
2010 – 2019
- 2019
- [j97]Teruki Someya
, A. K. M. Mahfuzul Islam
, Takayasu Sakurai, Makoto Takamiya:
An 11-nW CMOS Temperature-to-Digital Converter Utilizing Sub-Threshold Current at Sub-Thermal Drain Voltage. IEEE J. Solid State Circuits 54(3): 613-622 (2019) - [j96]Teruki Someya
, Kenichi Matsunaga, Hiroki Morimura, Takayasu Sakurai, Makoto Takamiya:
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. 66-I(3): 1270-1279 (2019) - [c123]Tsukasa Kagaya, Koutaro Miyazaki, Makoto Takamiya, Takayasu Sakurai:
A 500-Mbps Digital Isolator Circuits using Counter-Pulse Immune Receiver Scheme for Power Electronics. ICICDT 2019: 1-4 - [c122]Koutaro Miyazaki, Yang Lo, A. K. M. Mahfuzul Islam
, Katsuhiro Hata, Makoto Takamiya, Takayasu Sakurai:
CNN-based Approach for Estimating Degradation of Power Devices by Gate Waveform Monitoring. ICICDT 2019: 1-4 - [c121]Yu-Shan Cheng, Daiki Yamaguchi
, Tomoyuki Mannen, Keiji Wada, Toru Sai, Koutaro Miyazaki, Makoto Takamiya, Takayasu Sakurai:
Digital Active Gate Drive with Optimal Switching Patterns to Adapt to Sinusoidal Output Current in a Full Bridge Inverter Circuit. IECON 2019: 1684-1689 - [c120]Hao Qiu, Takayasu Sakurai, Makoto Takamiya:
Coupling-Dependent Data Flipping in Wireless Power and Data Transfer System. ISCAS 2019: 1-5 - 2018
- [j95]Toru Sai
, Yoshitaka Yamauchi
, Hajime Kando, Tatsuya Funaki, Takayasu Sakurai, Makoto Takamiya:
2/3 and 1/2 Reconfigurable Switched Capacitor DC-DC Converter With 92.9% Efficiency at 62 mW/mm2 Using Driver Amplitude Doubler. IEEE Trans. Circuits Syst. II Express Briefs 65-II(11): 1654-1658 (2018) - [j94]Chung-Shiang Wu
, Makoto Takamiya, Takayasu Sakurai:
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. 26(6): 1139-1150 (2018) - [c119]Teruki Someya, Islam A. K. M. Mahfuzul
, Takayasu Sakurai, Makoto Takamiya:
A 13nW temperature-to-digital converter utilizing sub-threshold MOSFET operation at sub-thermal drain voltage. CICC 2018: 1-4 - 2017
- [j93]Islam A. K. M. Mahfuzul
, Masamune Hamamatsu, Tomoyuki Yokota, Sunghoon Lee
, Wakako Yukita, Makoto Takamiya, Takao Someya, Takayasu Sakurai:
Programmable Neuron Array Based on a 2-Transistor Multiplier Using Organic Floating-Gate for Intelligent Sensors. IEEE J. Emerg. Sel. Topics Circuits Syst. 7(1): 81-91 (2017) - [j92]Teruki Someya, Hiroshi Fuketa, Kenichi Matsunaga, Hiroki Morimura, Takayasu Sakurai, Makoto Takamiya:
Design and Analysis of Ultra-Low Power Glitch-Free Programmable Voltage Detector Based on Multiple Voltage Copier. IEICE Trans. Electron. 100-C(4): 349-358 (2017) - [j91]Shunta Iguchi
, Takayasu Sakurai, Makoto Takamiya:
A Low-Power CMOS Crystal Oscillator Using a Stacked-Amplifier Architecture. IEEE J. Solid State Circuits 52(11): 3006-3017 (2017) - [c118]Chung-Shiang Wu, Makoto Takamiya, Takayasu Sakurai:
Buck converter with higher than 87% efficiency over 500nA to 20mA load current range for IoT sensor nodes by Clocked Hysteresis Control. CICC 2017: 1-4 - [c117]Yoshitaka Yamauchi
, Toru Sai, Takayasu Sakurai, Makoto Takamiya:
Modeling of 3-level buck converters in discontinuous conduction mode for stand-by mode power supply. ISCAS 2017: 1-4 - 2016
- [j90]Shunta Iguchi, Hiroshi Fuketa, Takayasu Sakurai, Makoto Takamiya:
Variation-Tolerant Quick-Start-Up CMOS Crystal Oscillator With Chirp Injection and Negative Resistance Booster. IEEE J. Solid State Circuits 51(2): 496-508 (2016) - [c116]Teruki Someya, Kenichi Matsunaga, Hiroki Morimura, Takayasu Sakurai, Makoto Takamiya:
56-Level programmable voltage detector in steps of 50mV for battery management. A-SSCC 2016: 49-52 - [c115]Shunta Iguchi, Takayasu Sakurai, Makoto Takamiya:
5.7 A 39.25MHz 278dB-FOM 19µW LDO-free stacked-amplifier crystal oscillator (SAXO) operating at I/O voltage. ISSCC 2016: 100-101 - 2015
- [j89]Shunta Iguchi, Pyungwoo Yeon, Hiroshi Fuketa, Koichi Ishida, Takayasu Sakurai, Makoto Takamiya:
Wireless Power Transfer With Zero-Phase-Difference Capacitance Control. IEEE Trans. Circuits Syst. I Regul. Pap. 62-I(4): 938-947 (2015) - [c114]Dan Luo, Hiroshi Fuketa, Kenichi Matsunaga, Hiroki Morimura, Makoto Takamiya, Takayasu Sakurai:
Analysis to optimize sensitivity of RF energy harvester with voltage boost circuit. ECCTD 2015: 1-4 - [c113]Teruki Someya, Hiroshi Fuketa, Kenichi Matsunaga, Hiroki Morimura, Takayasu Sakurai, Makoto Takamiya:
248pW, 0.11mV/°C glitch-free programmable voltage detector with multiple voltage duplicator for energy harvesting. ESSCIRC 2015: 249-252 - [c112]Yoshitaka Yamauchi
, Yuki Yanagihara, Hiroshi Fuketa, Takayasu Sakurai, Makoto Takamiya:
Optimal design to maximize efficiency of single-inductor multiple-output buck converters in discontinuous conduction mode for IoT applications. ICICDT 2015: 1-4 - [c111]Hiroshi Fuketa, Masamune Hamamatsu, Tomoyuki Yokota, Wakako Yukita, Teruki Someya, Tsuyoshi Sekitani, Makoto Takamiya, Takao Someya, Takayasu Sakurai:
16.4 Energy-autonomous fever alarm armband integrating fully flexible solar cells, piezoelectric speaker, temperature detector, and 12V organic complementary FET circuits. ISSCC 2015: 1-3 - 2014
- [j88]Hiroshi Fuketa, Masahiro Nomura, Makoto Takamiya, Takayasu Sakurai:
Intermittent Resonant Clocking Enabling Power Reduction at Any Clock Frequency for Near/Sub-Threshold Logic Circuits. IEEE J. Solid State Circuits 49(2): 536-544 (2014) - [j87]Xin Zhang, Po-Hung Chen, Yasuyuki Okuma, Koichi Ishida, Yoshikatsu Ryu, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya:
A 0.6 V Input CCM/DCM Operating Digital Buck Converter in 40 nm CMOS. IEEE J. Solid State Circuits 49(11): 2377-2386 (2014) - [j86]Hiroshi Fuketa, Kazuaki Yoshioka, Yasuhiro Shinozuka, Koichi Ishida, Tomoyuki Yokota, Naoji Matsuhisa, Yusuke Inoue, Masaki Sekino, Tsuyoshi Sekitani, Makoto Takamiya, Takao Someya, Takayasu Sakurai:
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. 8(6): 824-833 (2014) - [j85]Shunta Iguchi, Akira Saito, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya:
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. 61-I(10): 2978-2986 (2014) - [c110]Hiroshi Fuketa, Youichi Momiyama, Atsushi Okamoto, Tsuyoshi Sakata, Makoto Takamiya, Takayasu Sakurai:
An 85-mV input, 50-µs startup fully integrated voltage multiplier with passive clock boost using on-chip transformers for energy harvesting. ESSCIRC 2014: 263-266 - [c109]Hiroshi Fuketa, Kazuaki Yoshioka, Tomoyuki Yokota, Wakako Yukita, Mari Koizumi, Masaki Sekino, Tsuyoshi Sekitani, Makoto Takamiya, Takao Someya, Takayasu Sakurai:
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 2014: 490-491 - [c108]Makoto Takamiya, Hiroshi Fuketa, Koichi Ishida, Tomoyuki Yokota, Tsuyoshi Sekitani, Takao Someya, Takayasu Sakurai:
Flexible, large-area, and distributed organic electronics closely contacted with skin for healthcare applications. MWSCAS 2014: 829-832 - [c107]Shunta Iguchi, Hiroshi Fuketa, Takayasu Sakurai, Makoto Takamiya:
92% start-up time reduction by variation-tolerant chirp injection (CI) and negative resistance booster (NRB) in 39MHz crystal oscillator. VLSIC 2014: 1-2 - 2013
- [j84]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:
Insole Pedometer With Piezoelectric Energy Harvester and 2 V Organic Circuits. IEEE J. Solid State Circuits 48(1): 255-264 (2013) - [j83]Shinji Miyano, Shinichi Moriwaki, Yasue Yamamoto, Atsushi Kawasumi, Toshikazu Suzuki, Takayasu Sakurai, Hirofumi Shinohara:
Highly Energy-Efficient SRAM With Hierarchical Bit Line Charge-Sharing Method Using Non-Selected Bit Line Charges. IEEE J. Solid State Circuits 48(4): 924-931 (2013) - [j82]Hiroshi Fuketa, Ryo Takahashi, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai:
Increase of Crosstalk Noise Due to Imbalanced Threshold Voltage Between nMOS and pMOS in Subthreshold Logic Circuits. IEEE J. Solid State Circuits 48(8): 1986-1994 (2013) - [j81]Hiroshi Fuketa, Koji Hirairi, Tadashi Yasufuku, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai:
Minimizing Energy of Integer Unit by Higher Voltage Flip-Flop: VDDmin-Aware Dual Supply Voltage Technique. IEEE Trans. Very Large Scale Integr. Syst. 21(6): 1175-1179 (2013) - [c106]Hiroshi Fuketa, Ryo Takahashi, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai:
Variation-aware subthreshold logic circuit design. ASICON 2013: 1-4 - [c105]Shunta Iguchi, Akira Saito, Kentaro Honda, Yun Fei Zheng, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya:
315MHz OOK transceiver with 38-µW receiver and 36-µW transmitter in 40-nm CMOS. ASP-DAC 2013: 93-94 - [c104]Xin Zhang, Po-Hung Chen, Yoshikatsu Ryu, Koichi Ishida, Yasuyuki Okuma, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya:
A low voltage buck DC-DC converter using on-chip gate boost technique in 40nm CMOS. ASP-DAC 2013: 109-110 - [c103]Tsuyoshi Sekitani, Tomoyuki Yokota, Makoto Takamiya, Takayasu Sakurai, Takao Someya:
Electrical artificial skin using ultraflexible organic transistor. DAC 2013: 125:1-125:3 - [c102]Yasuhiro Shinozuka, Hiroshi Fuketa, Koichi Ishida, Futoshi Furuta, Kenichi Osada, Kenichi Takeda, Makoto Takamiya, Takayasu Sakurai:
Reducing IR drop in 3D integration to less than 1/4 using Buck Converter on Top die (BCT) scheme. ISQED 2013: 210-215 - [c101]Hiroshi Fuketa, Kazuaki Yoshioka, Yasuhiro Shinozuka, Koichi Ishida, Tomoyuki Yokota, Naoji Matsuhisa, Yusuke Inoue, Masaki Sekino, Tsuyoshi Sekitani, Makoto Takamiya, Takao Someya, Takayasu Sakurai:
1µm-thickness 64-channel surface electromyogram measurement sheet with 2V organic transistors for prosthetic hand control. ISSCC 2013: 104-105 - [c100]Hiroshi Fuketa, Masahiro Nomura, Makoto Takamiya, Takayasu Sakurai:
Intermittent resonant clocking enabling power reduction at any clock frequency for 0.37V 980kHz near-threshold logic circuits. ISSCC 2013: 436-437 - [c99]Hiroshi Fuketa, Koichi Ishida, Tsuyoshi Sekitani, Makoto Takamiya, Takao Someya, Takayasu Sakurai:
Large-area and flexible sensors with organic transistors. IWASI 2013: 87-90 - 2012
- [j80]Lechang Liu, Takayasu Sakurai, Makoto Takamiya:
A 315 MHz Power-Gated Ultra Low Power Transceiver in 40 nm CMOS for Wireless Sensor Network. IEICE Trans. Electron. 95-C(6): 1035-1041 (2012) - [j79]Naoki Masunaga, Koichi Ishida, Takayasu Sakurai, Makoto Takamiya:
EMI Camera LSI (EMcam) with On-Chip Loop Antenna Matrix to Measure EMI Noise Spectrum and Distribution. IEICE Trans. Electron. 95-C(6): 1059-1066 (2012) - [j78]Koichi Ishida, Tsung-Ching Huang, Kentaro Honda, Tsuyoshi Sekitani, Hiroyoshi Nakajima, Hiroki Maeda, Makoto Takamiya, Takao Someya, Takayasu Sakurai:
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 47(1): 301-309 (2012) - [j77]Po-Hung Chen, Koichi Ishida, Katsuyuki Ikeuchi, Xin Zhang, Kentaro Honda, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai:
Startup Techniques for 95 mV Step-Up Converter by Capacitor Pass-On Scheme and VTH-Tuned Oscillator With Fixed Charge Programming. IEEE J. Solid State Circuits 47(5): 1252-1260 (2012) - [j76]Po-Hung Chen, Xin Zhang, Koichi Ishida, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai:
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 47(11): 2554-2562 (2012) - [j75]Xin Zhang, Yu Pu, Koichi Ishida, Yoshikatsu Ryu, Yasuyuki Okuma, Po-Hung Chen, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya:
A 1-V-Input Switched-Capacitor Voltage Converter With Voltage-Reference-Free Pulse-Density Modulation. IEEE Trans. Circuits Syst. II Express Briefs 59-II(6): 361-365 (2012) - [j74]Ryo Takahashi, Hidehiro Takata, Tadashi Yasufuku, Hiroshi Fuketa, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai:
Large Within-Die Gate Delay Variations in Sub-Threshold Logic Circuits at Low Temperature. IEEE Trans. Circuits Syst. II Express Briefs 59-II(12): 918-921 (2012) - [j73]Xin Zhang, Koichi Ishida, Hiroshi Fuketa, Makoto Takamiya, Takayasu Sakurai:
On-Chip Measurement System for Within-Die Delay Variation of Individual Standard Cells in 65-nm CMOS. IEEE Trans. Very Large Scale Integr. Syst. 20(10): 1876-1880 (2012) - [c98]Po-Hung Chen, Koichi Ishida, Xin Zhang, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai:
A 120-mV input, fully integrated dual-mode charge pump in 65-nm CMOS for thermoelectric energy harvester. ASP-DAC 2012: 469-470 - [c97]Hiroshi Fuketa, Ryo Takahashi, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai:
Increase of crosstalk noise due to imbalanced threshold voltage between NMOS and PMOS in sub-threshold logic circuits. CICC 2012: 1-4 - [c96]Shunta Iguchi, Akira Saito, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya:
2.1 Times increase of drain efficiency by dual supply voltage scheme in 315MHz class-F Power amplifier at output power of -20dBm. ESSCIRC 2012: 345-348 - [c95]Akira Saito, Yun Fei Zheng, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya:
0.35V, 4.1μW, 39MHz crystal oscillator in 40nm CMOS. ISLPED 2012: 333-338 - [c94]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:
24% Power reduction by post-fabrication dual supply voltage control of 64 voltage domains in VDDmin limited ultra low voltage logic circuits. ISQED 2012: 586-591 - [c93]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:
Insole pedometer with piezoelectric energy harvester and 2V organic digital and analog circuits. ISSCC 2012: 308-310 - [c92]Koji Hirairi, Yasuyuki Okuma, Hiroshi Fuketa, Tadashi Yasufuku, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai:
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 2012: 486-488 - [c91]Takayasu Sakurai:
Ambient electronics and ultra-low power LSI design. VLSI-DAT 2012: 1-31 - [c90]Akira Saito, Kentaro Honda, Yun Fei Zheng, Shunta Iguchi, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya:
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 2012: 38-39 - [c89]Shinichi Moriwaki, Yasuhiro Yamamoto, Atsushi Kawasumi, Toshikazu Suzuki, Shinji Miyano, Takayasu Sakurai, Hirofumi Shinohara:
A 13.8pJ/Access/Mbit SRAM with charge collector circuits for effective use of non-selected bit line charges. VLSIC 2012: 60-61 - [c88]Xin Zhang, Po-Hung Chen, Yoshikatsu Ryu, Koichi Ishida, Yasuyuki Okuma, Kazunori Watanabe, Takayasu Sakurai, Makoto Takamiya:
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 2012: 194-195 - 2011
- [j72]Po-Hung Chen, Koichi Ishida, Xin Zhang, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai:
0.18-V Input Charge Pump with Forward Body Bias to Startup Boost Converter for Energy Harvesting Applications. IEICE Trans. Electron. 94-C(4): 598-604 (2011) - [j71]Yasuyuki Okuma, Koichi Ishida, Yoshikatsu Ryu, Xin Zhang, Po-Hung Chen, Kazunori Watanabe, Makoto Takamiya, Takayasu Sakurai:
0.5-V Input Digital Low-Dropout Regulator (LDO) with 98.7% Current Efficiency in 65 nm CMOS. IEICE Trans. Electron. 94-C(6): 938-944 (2011) - [j70]Xin Zhang, Yu Pu, Koichi Ishida, Yoshikatsu Ryu, Yasuyuki Okuma, Po-Hung Chen, Takayasu Sakurai, Makoto Takamiya:
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. 94-C(6): 953-959 (2011) - [j69]Lechang Liu, Takayasu Sakurai, Makoto Takamiya:
0.6 V Voltage Shifter and Clocked Comparator for Sampling Correlation-Based Impulse Radio UWB Receiver. IEICE Trans. Electron. 94-C(6): 985-991 (2011) - [j68]Katsuyuki Ikeuchi, Hideki Kusamitsu, Mutsuo Daito, Gil-Su Kim, Makoto Takamiya, Takayasu Sakurai:
1 Gb/s, 50 µm × 50 µm Pads on Board Wireless Connector Based on Track-and-Charge Scheme Allowing Contacted Signaling. IEICE Trans. Electron. 94-C(6): 992-998 (2011) - [j67]Tadashi Yasufuku, Yasumi Nakamura, Piao Zhe, Makoto Takamiya, Takayasu Sakurai:
Power Supply Voltage Dependence of Within-Die Delay Variation of Regular Manual Layout and Irregular Place-and-Route Layout. IEICE Trans. Electron. 94-C(6): 1072-1075 (2011) - [j66]Koichi Ishida, Naoki Masunaga, Ryo Takahashi, Tsuyoshi Sekitani, Shigeki Shino, Ute Zschieschang, Hagen Klauk, Makoto Takamiya, Takao Someya, Takayasu Sakurai:
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 46(1): 285-292 (2011) - [j65]Lechang Liu, Takayasu Sakurai, Makoto Takamiya:
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 46(6): 1349-1359 (2011) - [j64]Koichi Ishida, Tadashi Yasufuku, Shinji Miyamoto, Hiroto Nakai, Makoto Takamiya, Takayasu Sakurai, Ken Takeuchi:
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 46(6): 1478-1487 (2011) - [j63]Mutsuo Daito, Yoshiro Nakata, Satoshi Sasaki, Hiroyuki Gomyo, Hideki Kusamitsu, Yoshio Komoto, Kunihiko Iizuka, Katsuyuki Ikeuchi, Gil-Su Kim, Makoto Takamiya, Takayasu Sakurai:
Capacitively Coupled Non-Contact Probing Circuits for Membrane-Based Wafer-Level Simultaneous Testing. IEEE J. Solid State Circuits 46(10): 2386-2395 (2011) - [j62]Yu Pu, Xin Zhang, Katsuyuki Ikeuchi, Atsushi Muramatsu, Atsushi Kawasumi, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai:
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 58-II(5): 294-298 (2011) - [c87]Katsuyuki Ikeuchi, Makoto Takamiya, Takayasu Sakurai:
Through Silicon Capacitive Coupling (TSCC) interface for 3D stacked dies. 3DIC 2011: 1-5 - [c86]Xin Zhang, Koichi Ishida, Makoto Takamiya, Takayasu Sakurai:
An on-chip characterizing system for within-die delay variation measurement of individual standard cells in 65-nm CMOS. ASP-DAC 2011: 109-110 - [c85]Po-Hung Chen, Koichi Ishida, Xin Zhang, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai:
A 80-mV input, fast startup dual-mode boost converter with charge-pumped pulse generator for energy harvesting. A-SSCC 2011: 33-36 - [c84]Shinichi Moriwaki, Atsushi Kawasumi, Toshikazu Suzuki, Takayasu Sakurai, Shinji Miyano:
0.4V SRAM with bit line swing suppression charge share hierarchical bit line scheme. CICC 2011: 1-4 - [c83]Hiroshi Fuketa, Satoshi Iida, Tadashi Yasufuku, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai:
A closed-form expression for estimating minimum operating voltage (VDDmin) of CMOS logic gates. DAC 2011: 984-989 - [c82]Atsushi Muramatsu, Tadashi Yasufuku, Masahiro Nomura, Makoto Takamiya, Hirofumi Shinohara, Takayasu Sakurai:
12% Power reduction by within-functional-block fine-grained adaptive dual supply voltage control in logic circuits with 42 voltage domains. ESSCIRC 2011: 191-194 - [c81]Tadashi Yasufuku, Satoshi Iida, Hiroshi Fuketa, Koji Hirairi, Masahiro Nomura, Makoto Takamiya, Takayasu Sakurai:
Investigation of determinant factors of minimum operating voltage of logic gates in 65-nm CMOS. ISLPED 2011: 21-26 - [c80]Takayasu Sakurai:
Designing ultra-low voltage logic. ISLPED 2011: 57-58 - [c79]Hiroshi Fuketa, Koji Hirairi, Tadashi Yasufuku, Makoto Takamiya, Masahiro Nomura, Hirofumi Shinohara, Takayasu Sakurai:
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. ISLPED 2011: 163-168 - [c78]Kentaro Honda, Katsuyuki Ikeuchi, Masahiro Nomura, Makoto Takamiya, Takayasu Sakurai:
Reduction of minimum operating voltage (VDDmin) of CMOS logic circuits with post-fabrication automatically selective charge injection. ISLPED 2011: 175-180 - [c77]Jan M. Rabaey, Hugo De Man, Mark Horowitz, Takayasu Sakurai, Jack Sun, Dan Dobberpuhl, Kiyoo Itoh, Philippe Magarshack, Asad A. Abidi, Hermann Eul:
Beyond the horizon: The next 10x reduction in power - Challenges and solutions. ISSCC 2011: 31 - [c76]Po-Hung Chen, Koichi Ishida, Katsuyuki Ikeuchi, Xin Zhang, Kentaro Honda, Yasuyuki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai:
A 95mV-startup step-up converter with Vth-tuned oscillator by fixed-charge programming and capacitor pass-on scheme. ISSCC 2011: 216-218 - [c75]Koichi Ishida, Tsung-Ching Huang, Kentaro Honda, Tsuyoshi Sekitani, Hiroyoshi Nakajima, Hiroki Maeda, Makoto Takamiya, Takao Someya, Takayasu Sakurai:
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 2011: 218-220 - 2010
- [j61]Tadashi Yasufuku, Koichi Ishida, Shinji Miyamoto, Hiroto Nakai, Makoto Takamiya, Takayasu Sakurai, Ken Takeuchi:
Inductor and TSV Design of 20-V Boost Converter for Low Power 3D Solid State Drive with NAND Flash Memories. IEICE Trans. Electron. 93-C(3): 317-323 (2010) - [j60]Tadashi Yasufuku, Taro Niiyama, Piao Zhe, Koichi Ishida, Masami Murakata, Makoto Takamiya, Takayasu Sakurai:
Difficulty of Power Supply Voltage Scaling in Large Scale Subthreshold Logic Circuits. IEICE Trans. Electron. 93-C(3): 332-339 (2010) - [j59]Lechang Liu, Zhiwei Zhou, Takayasu Sakurai, Makoto Takamiya:
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. 93-C(6): 796-802 (2010) - [j58]Mitsuko Saito, Yasufumi Sugimori, Yoshinori Kohama, Yoichi Yoshida, Noriyuki Miura, Hiroki Ishikuro, Takayasu Sakurai, Tadahiro Kuroda:
2 Gb/s 15 pJ/b/chip Inductive-Coupling Programmable Bus for NAND Flash Memory Stacking. IEEE J. Solid State Circuits 45(1): 134-141 (2010) - [j57]Koichi Ishida, Naoki Masunaga, Zhiwei Zhou, Tadashi Yasufuku, Tsuyoshi Sekitani, Ute Zschieschang, Hagen Klauk, Makoto Takamiya, Takao Someya, Takayasu Sakurai:
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 45(1): 249-259 (2010) - [j56]Youngsoo Shin, Jun Seomun, Kyu-Myung Choi, Takayasu Sakurai:
Power gating: Circuits, design methodologies, and best practice for standard-cell VLSI designs. ACM Trans. Design Autom. Electr. Syst. 15(4): 28:1-28:37 (2010) - [c74]Koichi Ishida, Koichi Takemura, Kazuhiro Baba, Makoto Takamiya, Takayasu Sakurai:
3D stacked buck converter with 15μm thick spiral inductor on silicon interposer for fine-grain power-supply voltage control in SiP's. 3DIC 2010: 1-4 - [c73]Gil-Su Kim, Katsuyuki Ikeuchi, Mutsuo Daito, Makoto Takamiya, Takayasu Sakurai:
A high-speed, low-power capacitive-coupling transceiver for wireless wafer-level testing systems. 3DIC 2010: 1-4 - [c72]Po-Hung Chen, Koichi Ishida, Xin Zhang, Yasuaki Okuma, Yoshikatsu Ryu, Makoto Takamiya, Takayasu Sakurai:
0.18-V input charge pump with forward body biasing in startup circuit using 65nm CMOS. CICC 2010: 1-4 - [c71]Naoki Masunaga, Koichi Ishida, Makoto Takamiya, Takayasu Sakurai:
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 2010: 1-4 - [c70]Yasuyuki Okuma, Koichi Ishida, Yoshikatsu Ryu, Xin Zhang, Po-Hung Chen, Kazunori Watanabe, Makoto Takamiya, Takayasu Sakurai:
0.5-V input digital LDO with 98.7% current efficiency and 2.7-µA quiescent current in 65nm CMOS. CICC 2010: 1-4 - [c69]Makoto Takamiya, Koichi Ishida, Tsuyoshi Sekitani, Takao Someya, Takayasu Sakurai:
Design of large area electronics with organic transistors. ICCAD 2010: 500-503 - [c68]Yu Pu, Xin Zhang, Jim Huang, Atsushi Muramatsu, Masahiro Nomura, Koji Hirairi, Hidehiro Takata, Taro Sakurabayashi, Shinji Miyano, Makoto Takamiya, Takayasu Sakurai:
Misleading energy and performance claims in sub/near threshold digital systems. ICCAD 2010: 625-631 - [c67]