Kiichi Niitsu

ORCID

Publication Activity (10 Years)

Years Active: 2006-2024
Publications (10 Years): 69

Top Venues

BioCAS

ASP-DAC

ICECS

IEICE Trans. Electron.

Publications

Kiichi Niitsu, Koki Fukushima, Yuichi Hiraoka, Hidenori Urawa, Yutaka Ozawa, Yuya Osaki, Masaya Kaneko, Jin Nakamura, Hideo Yoshikawa
80mW Direct-Conversion Receiver. LASCAS (2024)
Akiyoshi Tanaka, Guowei Chen, Kiichi Niitsu
1.75-nW Biofuel Cell-Input Biosensing/Data-Storing System with 5.5-GHz Wireless Backscatter Data-Readout in 65-nm CMOS for Self-Powered Smart Contact Lenses. BioCAS (2023)
Guowei Chen, Akiyoshi Tanaka, Kiichi Niitsu
65-nm CMOS Biofuel-Cell-Modulated Biosensing System Featuring an FSK-PIM-Combined 2.4 GHz Transmitter for Continuous Glucose Monitoring Contact Lenses. ISCAS (2023)
Guowei Chen, Xinyang Yu, Yue Wang, Tran Minh Quan, Naofumi Matsuyama, Takuya Tsujimura, Kiichi Niitsu
Ambient Light-Driven Solar Cell-Powered Biofuel Cell-Input Biosensing System with LED Driving for Stand-Alone RF-Less Continuous Glucose Monitoring Contact Lens. ASP-DAC (2022)
Akiyoshi Tanaka, Guowei Chen, Kiichi Niitsu
A 4.5-mW 22-nm CMOS Label-Free Frequency-Shift 3 × 3 × 2 3-D Biosensor Array Using Vertically Stacked 60-GHz LC Oscillators. IEEE Trans. Circuits Syst. II Express Briefs 69 (10) (2022)
Xujiaming Chen, Guowei Chen, Xinyang Yu, Yue Wang, Kiichi Niitsu
A 52.3% Peak Efficiency 22nm CMOS Low-Power Light-Adaptive Self-Oscillating Voltage Doubler Using Scalable Dynamic Leakage-Suppression Logic. LASCAS (2022)
Guowei Chen, Kiichi Niitsu
A Solar-Cell-Assisted, 99% Biofuel Cell Area Reduced, Biofuel-Cell-Powered Wireless Biosensing System in 65nm CMOS for Continuous Glucose Monitoring Contact Lenses. IEICE Trans. Electron. (7) (2022)
Duong Nghiep Huy, Guowei Chen, Kiichi Niitsu
22nm CMOS pW Standby Power Flip-Flops with/without Security using Dynamic Leakage Suppression Logic. LASCAS (2022)
Shinichi Ito, Akiyoshi Tanaka, Guowei Chen, Xujiaming Chen, Kiichi Niitsu
A 0.00023 mm² 1.2V 0.48mW 18GHz Passive-Less Digital Wireless Transmitter with On-Chip Antenna in 22nm Bulk CMOS. MWSCAS (2022)
Akiyoshi Tanaka, Guowei Chen, Kiichi Niitsu
A 4.8-mW Label-free Frequency-shift 3×3×2 3D Biosensor Array with Vertically-stacked 60-GHz LC Oscillators in 22-nm CMOS. MWSCAS (2022)
Guowei Chen, Xujiaming Chen, Kiichi Niitsu
Slope ADC-Based Supply Voltage Monitor for Biofuel-Cell-Powered Supply-Sensing Systems in 180-nm CMOS. IEICE Trans. Electron. (10) (2022)
Sora Kato, Guowei Chen, Kiichi Niitsu
An Ultra-Low Power 22 nm Self-Oscillating Voltage Doubler With Dynamic Leakage-Suppression Logic. LASCAS (2022)
Guowei Chen, Xinyang Yu, Yue Wang, Tran Minh Quan, Naofumi Matsuyama, Takuya Tsujimura, Md. Zahidul Islam, Kiichi Niitsu
0.31 V/0.39 V 28 nW/144 nW 65 nm CMOS Solar Cell-Powered Biofuel Cell-Input Biosensing System with PIM/PDM LED Driving for Stand-Alone RF-Less Continuous Glucose Monitoring Contact Lens. ESSCIRC (2021)
Yue Wang, Guowei Chen, Xinyang Yu, Xujiaming Chen, Kiichi Niitsu
A 22nm CMOS 0.2V 13.3nW 16T SRAM Using Dynamic Leakage Suppression and Half-Selected Free Technique. APCCAS (2021)
Akiyoshi Tanaka, Guowei Chen, Kiichi Niitsu
A 4.8mW 22nm CMOS Fully-Integrated 60-GHz $3\times 3\times 2$ 3D Frequency-Shift Biosensor Array Using Vertically-Stacked LC Oscillators. ICECS (2021)
Akiyoshi Tanaka, Guowei Chen, Sitong Ye, Kiichi Niitsu
Fully-Passive mHBC Tag Using Intermediate Interference Modulation in 65nm CMOS. ICECS (2021)
Guowei Chen, Xinyang Yu, Yue Wang, Tran Minh Quan, Naofumi Matsuyama, Takuya Tsujimura, Md. Zahidul Islam, Kiichi Niitsu
0.31 V/0.39 V 28 nW/144 nW 65 nm CMOS Solar Cell-Powered Biofuel Cell-Input Biosensing System with PIM/PDM LED Driving for Stand-Alone RF-Less Continuous Glucose Monitoring Contact Lens. ESSDERC (2021)
Guowei Chen, Cong Dang Bui, Xinyang Yu, Md. Zahidul Islam, Atsuki Kobayashi, Kiichi Niitsu
A 72-nW 440-mV Time Register Using Stacked-NMOS-Switched Gated Delay Cell in Biomedical Applications. APCCAS (2020)
Shunya Murakami, Takuya Tsujimura, Guowei Chen, Md. Zahidul Islam, Kiichi Niitsu
Widely Tunable CMOS-Based Biosensor With an Active-Inductor-Based VCO for Detecting CTCs and Exosomes. ICECS (2020)
Atsuki Kobayashi, Kiichi Niitsu
Low-Voltage Gate-Leakage-Based Timer Using an Amplifier-Less Replica-Bias Switching Technique in 55-nm DDC CMOS. IEEE Open J. Circuits Syst. 1 (2020)
Kosuke Uchiyama, Guowei Chen, Kiichi Niitsu
Design of Fully-Integrated Self-Powered FM Transmitter Using On-Chip Photodiodes in 65-nm CMOS. ICECS (2020)
Sitong Ye, Atsuki Kobayashi, Guowei Chen, Kiichi Niitsu
Simulation Study of Full Passive Magnetic Human Body Communication in 65-nm CMOS Technology for Temperature Sensing Application. ICECS (2020)
Takuya Tsujimura, Shunya Murakami, Guowei Chen, Kiichi Niitsu
Design of 33 GHz 65-nm-CMOS Small-Formfactor Direct-Conversion Receiver for Non-Invasive Continuous Glucose Monitoring. ICECS (2020)
Kenya Hayashi, Shigeki Arata, Ge Xu, Shunya Murakami, Cong Dang Bui, Atsuki Kobayashi, Kiichi Niitsu
0.165V 0.27nW Fully-Integrated Supply-Modulated OOK Transmitter in 65nm CMOS for Glasses-Free, Self-Powered, and Fuel-Cell-Embedded Continuous Glucose Monitoring Contact Lens. IEICE Trans. Electron. (7) (2019)
Taiki Nakanishi, Shunya Murakami, Atsuki Kobayashi, Md. Zahidul Islam, Kiichi Niitsu
A 40-GHz Fully-Integrated CMOS-Based Biosensor Circuit with an On-Chip Vector Network Analyzer for Circulating Tumor Cells Analysis. NORCAS (2019)
Taiki Nakanishi, Maya Matsunaga, Shunya Murakami, Atsuki Kobayashi, Kiichi Niitsu
A 65-nm CMOS fully-integrated circulating tumor cell and exosome analyzer using an on-chip vector network analyzer and a transmission-line-based detection window. ASP-DAC (2019)
Kiichi Niitsu, Yuuki Yamaji, Atsuki Kobayashi, Kazuo Nakazato
A low-voltage CMOS electrophoresis IC using electroless gold plating for small-form-factor biomolecule manipulation. ASP-DAC (2019)
Tran Minh Quan, Takuyoshi Doike, Cong Dang Bui, Kenya Hayashi, Shigeki Arata, Atsuki Kobayashi, Md. Zahidul Islam, Kiichi Niitsu
AI-Based Edge-Intelligent Hypoglycemia Prediction System Using Alternate Learning and Inference Method for Blood Glucose Level Data with Low-periodicity. AICAS (2019)
Atsuki Kobayashi, Yuya Nishio, Kenya Hayashi, Shigeki Arata, Kiichi Niitsu
Design of gate-leakage-based timer using an amplifier-less replica-bias switching technique in 55-nm DDC CMOS. ASP-DAC (2019)
Shunya Murakami, Taiki Nakanishi, Atsuki Kobayashi, Md. Zahidul Islam, Kiichi Niitsu
LC-Voltage-Controlled-Oscillator-Based Biosensor in 180-nm CMOS Process Targeting β-Dispersion for Detecting Exosomes. APCCAS (2019)
Kenya Hayashi, Shigeki Arata, Ge Xu, Shunya Murakami, Cong Dang Bui, Takuyoshi Doike, Maya Matsunaga, Atsuki Kobayashi, Kiichi Niitsu
0.165V 270pW fully-integrated supply-modulated OOK transmitter in 65nm CMOS for glasses-free, self-powered, and fuel-cell-embedded continuous glucose monitoring contact lens. ASP-DAC (2019)
Kiichi Niitsu, Taichi Sakabe, Mariko Miyachi, Yoshinori Yamanoi, Hiroshi Nishihara, Tatsuya Tomo, Kazuo Nakazato
2D optical imaging using photosystem I photosensor platform with 32x32 CMOS biosensor array. ASP-DAC (2019)
Kenya Hayashi, Shigeki Arata, Ge Xu, Shunya Murakami, Cong Dang Bui, Atsuki Kobayashi, Kiichi Niitsu
Load-Modulated Transmitter and LC-Oscillator-Based Receiver in 65nm CMOS for Energy-Budget-Unbalanced Application. IEICE Trans. Electron. (7) (2019)
Kiichi Niitsu, Taiki Nakanishi, Shunya Murakami, Maya Matsunaga, Atsuki Kobayashi, Karim Nissar Mohammad, Jun Ito, Naoya Ozawa, Tetsunari Hase, Hiromasa Tanaka, Mitsuo Sato, Hiroki Kondo, Kenji Ishikawa, Hidefumi Odaka, Yoshinori Hasegawa, Masaru Hori, Kazuo Nakazato
A 65-nm CMOS Fully Integrated Analysis Platform Using an On-Chip Vector Network Analyzer and a Transmission-Line-Based Detection Window for Analyzing Circulating Tumor Cell and Exosome. IEEE Trans. Biomed. Circuits Syst. 13 (2) (2019)
Kiichi Niitsu, Osamu Kobayashi, Takahiro J. Yamaguchi, Haruo Kobayashi
Design and theoretical analysis of a clock jitter reduction circuit using gated phase blending between self-delayed clock edges. IEICE Electron. Express 16 (13) (2019)
Atsuki Kobayashi, Kenya Hayashi, Shigeki Arata, Shunya Murakami, Ge Xu, Md. Zahidul Islam, Kiichi Niitsu
A 2.1-nW Burst-Pulse-Counting Supply Voltage Monitor for Biofuel-Cell-Combined Biosensing Systems in 180-nm CMOS. BioCAS (2019)
Shunya Murakami, Taiki Nakanishi, Atsuki Kobayashi, Md. Zahidul Islam, Kiichi Niitsu
Verification of Inductive-Coupling-Based CMOS Biosensor Focusing on Dielectric Loss of β-Dispersion for Detecting Exosomes Through Electromagnetic Simulation. ICECS (2019)
Atsuki Kobayashi, Kenya Hayashi, Shigeki Arata, Shunya Murakami, Ge Xu, Kiichi Niitsu
A 65-nm CMOS 1.4-nW Self-Controlled Dual-Oscillator-Based Supply Voltage Monitor for Biofuel-Cell-Combined Biosensing Systems. ISCAS (2019)
Yuya Nishio, Atsuki Kobayashi, Kiichi Niitsu
Design and Calibration of a Small-Footprint, Low-Frequency, and Low-Power Gate Leakage Timer Using Differential Leakage Technique. IEICE Trans. Electron. (4) (2019)
Atsuki Kobayashi, Kenya Hayashi, Shigeki Arata, Shunya Murakami, Ge Xu, Kiichi Niitsu
Design of a Self-Controlled Dual-Oscillator-Based Supply Voltage Monitor for Biofuel-Cell-Combined Biosensing Systems in 65-nm CMOS and 55-nm DDC CMOS. IEEE Trans. Biomed. Circuits Syst. 13 (6) (2019)
Maya Matsunaga, Taiki Nakanishi, Atsuki Kobayashi, Kiichi Niitsu
A three-dimensional millimeter-wave frequency-shift based CMOS biosensor using vertically stacked spiral inductors in LC oscillators. ASP-DAC (2019)
Atsuki Kobayashi, Kenya Hayashi, Shigeki Arata, Shunya Murakami, Cong Dang Bui, Tran Minh Quan, Md. Zahidul Islam, Kiichi Niitsu
A Solar-Cell-Assisted, 99.66% Biofuel Cell Area Reduced, Biofuel-Cell-Powered Wireless Biosensing System in 65-nm CMOS for Continuous Glucose Monitoring Contact Lenses. ICECS (2019)
Ge Xu, Kenya Hayashi, Shigeki Arata, Shunya Murakami, Cong Dang Bui, Atsuki Kobayashi, Kiichi Niitsu
A BER-Modulated Inductive-Coupling Transceiver Using Dynamic Intermediate Interference Control Technique for Low-Power Communication. APCCAS (2018)
Kiichi Niitsu, Taichi Sakabe, Mariko Miyachi, Yoshinori Yamanoi, Hiroshi Nishihara, Tatsuya Tomo, Kazuo Nakazato
Demonstration of 2D Optical Imaging Using Photosystem I Photosensor Platform with 3232 CMOS Biosensor Array. NEWCAS (2018)
Kenya Hayashi, Shigeki Arata, Ge Xu, Shunya Murakami, Cong Dang Bui, Atsuki Kobayashi, Kiichi Niitsu
Live Demonstration: 385 × 385 μm2 0.165V 270pW Fully-Integrated Supply-Modulated OOK Tx in 65nm CMOS for Glasses-Free, Self-Powered, and Fuel-Cell-Embedded Continuous Glucose Monitoring Contact Lens. BioCAS (2018)
Yuya Nishio, Atsuki Kobayashi, Kiichi Niitsu
A Constant-Power Inductive-Coupling Transmitter Using Auxiliary Driving Technique in 65nm SOTB CMOS for Low-Power Supply-Sensing Biosensing Platform toward Healthcare IoTs. APCCAS (2018)
Kenya Hayashi, Shigeki Arata, Ge Xu, Shunya Murakami, Cong Dang Bui, Takuyoshi Doike, Maya Matsunaga, Atsuki Kobayashi, Kiichi Niitsu
A 385μm × 385μm 0.165 V 0.27 nW Fully-Integrated Supply-Modulated OOK CMOS TX in 65nm CMOS for Glasses-Free, Self-Powered, and Fuel-Cell-Embedded Continuous Glucose Monitoring Contact Lens. BioCAS (2018)
Atsuki Kobayashi, Yuya Nishio, Kenya Hayashi, Kazuo Nakazato, Kiichi Niitsu
A 350-mV, under-200-ppm allan deviation floor gate-leakage-based timer using an amplifier-less replica-bias switching technique in 55-nm DDC CMOS. CICC (2018)
Takuyoshi Doike, Kenya Hayashi, Shigeki Arata, Karim Nissar Mohammad, Atsuki Kobayashi, Kiichi Niitsu
A Blood Glucose Level Prediction System Using Machine Learning Based on Recurrent Neural Network for Hypoglycemia Prevention. NEWCAS (2018)
Kenya Hayashi, Shigeki Arata, Shunya Murakami, Yuya Nishio, Atsuki Kobayashi, Kiichi Niitsu
A 6.1-nA Fully Integrated CMOS Supply Modulated OOK Transmitter in 55-nm DDC CMOS for Glasses-Free, Self-Powered, and Fuel-Cell-Embedded Continuous Glucose Monitoring Contact Lens. IEEE Trans. Circuits Syst. II Express Briefs (10) (2018)
Kiichi Niitsu, Atsuki Kobayashi, Yuya Nishio, Kenya Hayashi, Kei Ikeda, Takashi Ando, Yudai Ogawa, Hiroyuki Kai, Matsuhiko Nishizawa, Kazuo Nakazato
A Self-Powered Supply-Sensing Biosensor Platform Using Bio Fuel Cell and Low-Voltage, Low-Cost CMOS Supply-Controlled Ring Oscillator With Inductive-Coupling Transmitter for Healthcare IoT. IEEE Trans. Circuits Syst. I Regul. Pap. (9) (2018)
Eizo Ushijima, Satoshi Fujimoto, Kiichi Niitsu, Kazuo Nakazato
Application of magnetic arrangement of microbeads for CMOS biosensor array sensitivity. BioCAS (2017)
Taiki Nakanishi, Maya Matsunaga, Atsuki Kobayashi, Kazuo Nakazato, Kiichi Niitsu
A fully-integrated circulating tumor cell analyzer using an on-chip vector network analyzer and a transmission-line-based detection window in 65-nm CMOS. BioCAS (2017)
Kei Ikeda, Atsuki Kobayashi, Kazuo Nakazato, Kiichi Niitsu
A scalable time-domain biosensor array using logarithmic cyclic time-attenuation-based TDC for high-resolution and large-scale bio-imaging. ASP-DAC (2017)
Kei Ikeda, Atsuki Kobayashi, Kiichi Niitsu
A scalable time-domain biosensor array using a capacitor-less CMATC and logarithmic cyclic time-attenuation-based TDC with discharge acceleration for high-spatial-resolution bio-imaging. ICECS (2017)
Yuya Nishio, Atsuki Kobayashi, Kiichi Niitsu
, 0.11Hz, 4.5pW gate leakage timer using differential leakage technique in 55nm DDC CMOS for small-footprint, low-frequency and low-power timing generation. ICECS (2017)
Kohei Gamo, Kazuo Nakazato, Kiichi Niitsu
A Current-Integration-Based CMOS Amperometric Sensor with 1024 × 1024 Bacteria-Sized Microelectrode Array for High-Sensitivity Bacteria Counting. IEICE Trans. Electron. (6) (2017)
Yuuki Yamaji, Kazuo Nakazato, Kiichi Niitsu
Sub-1-V CMOS-Based Electrophoresis Using Electroless Gold Plating for Small-Form-Factor Biomolecule Manipulation. IEICE Trans. Electron. (6) (2017)
Maya Matsunaga, Taiki Nakanishi, Atsuki Kobayashi, Kazuo Nakazato, Kiichi Niitsu
Three-dimensional millimeter-wave frequency-shift-based CMOS biosensor using vertically stacked LC oscillators. NORCAS (2017)
Atsuki Kobayashi, Kei Ikeda, Yudai Ogawa, Matsuhiko Nishizawa, Kazuo Nakazato, Kiichi Niitsu
Design of an energy-autonomous bio-sensing system using a biofuel cell and 0.19V 53μW integrated supply-sensing sensor with a supply-insensitive temperature sensor and inductive-coupling transmitter. ASP-DAC (2017)
Kei Ikeda, Atsuki Kobayashi, Kazuo Nakazato, Kiichi Niitsu
Design and Analysis of Scalability in Current-Mode Analog-to-Time Converter for an Energy-Efficient and High-Resolution CMOS Biosensor Array. IEICE Trans. Electron. (6) (2017)
Kohei Gamo, Kazuo Nakazato, Kiichi Niitsu
A current-integration-based CMOS amperometric sensor with 1.2 μm × 2.05 μm electroless-plated microelectrode array for high-sensitivity bacteria counting. ASP-DAC (2017)
Atsuki Kobayashi, Kei Ikeda, Yudai Ogawa, Hiroyuki Kai, Matsuhiko Nishizawa, Kazuo Nakazato, Kiichi Niitsu
Design and Experimental Verification of a 0.19 V 53 μW 65 nm CMOS Integrated Supply-Sensing Sensor With a Supply-Insensitive Temperature Sensor and an Inductive-Coupling Transmitter for a Self-Powered Bio-sensing System Using a Biofuel Cell. IEEE Trans. Biomed. Circuits Syst. 11 (6) (2017)
Kiichi Niitsu, Tsuyoshi Kuno, Masayuki Takihi, Kazuo Nakazato
Well-Shaped Microelectrode Array Structure for High-Density CMOS Amperometric Electrochemical Sensor Array. IEICE Trans. Electron. (6) (2016)
Atsuki Kobayashi, Kei Ikeda, Yudai Ogawa, Matsuhiko Nishizawa, Kazuo Nakazato, Kiichi Niitsu
An energy-autonomous bio-sensing system using a biofuel cell and 0.19V 53μW 65nm-CMOS integrated supply-sensing sensor with a supply-insensitive temperature sensor and inductive-coupling transmitter. BioCAS (2016)
Kiichi Niitsu, Atsuki Kobayashi, Yudai Ogawa, Matsuhiko Nishizawa, Kazuo Nakazato
Design of an energy-autonomous, disposable, supply-sensing biosensor using bio fuel cell and 0.23-V 0.25-µm zero-Vth all-digital CMOS supply-controlled ring oscillator with inductive transmitter. ASP-DAC (2016)
Kei Ikeda, Atsuki Kobayashi, Kazuo Nakazato, Kiichi Niitsu
Live demonstration: Current-mode analog-to-time converter for a large scale CMOS biosensor array. BioCAS (2016)
Kohei Gamo, Kazuo Nakazato, Kiichi Niitsu
Live demonstration: Noise-immune current-integration-based CMOS amperometric sensor platform with 1.2 μm × 2.05μm electroless-plated microelectrode array for robust bacteria counting. BioCAS (2016)
Kei Ikeda, Atsuki Kobayashi, Kazuo Nakazato, Kiichi Niitsu
A current-mode analog-to-time converter with short-pulse output capability using local intra-cell activation for high-speed time-domain biosensor array. NORCAS (2016)
Kiichi Niitsu, Atsuki Kobayashi, Yudai Ogawa, Matsuhiko Nishizawa, Kazuo Nakazato
An energy-autonomous, disposable, big-data-based supply-sensing biosensor using bio fuel cell and 0.23-V 0.25-μm Zero-Vth all-digital CMOS supply-controlled ring oscillator with inductive transmitter. BioCAS (2015)
Kiichi Niitsu, Shoko Ota, Kohei Gamo, Hiroki Kondo, Masaru Hori, Kazuo Nakazato
Development of Microelectrode Arrays Using Electroless Plating for CMOS-Based Direct Counting of Bacterial and HeLa Cells. IEEE Trans. Biomed. Circuits Syst. 9 (5) (2015)
Kohei Gamo, Kiichi Niitsu, Kazuo Nakazato
Noise-immune current-integration-based CMOS amperometric sensor platform with 1.2 μm × 2.05 μm electroless-plated microelectrode array for robust bacteria counting. BioCAS (2015)
Kiichi Niitsu, Yusuke Osawa, Naohiro Harigai, Daiki Hirabayashi, Osamu Kobayashi, Takahiro J. Yamaguchi, Haruo Kobayashi
A CMOS PWM Transceiver Using Self-Referenced Edge Detection. IEEE Trans. Very Large Scale Integr. Syst. 23 (6) (2015)
Miho Arai, Isao Shimizu, Haruo Kobayashi, Keita Kurihara, Shu Sasaki, Shohei Shibuya, Kiichi Niitsu, Kazuyoshi Kubo
Finite aperture time effects in sampling circuit. ASICON (2015)
Hayato Komori, Kiichi Niitsu, Junko Tanaka, Yu Ishige, Masao Kamahori, Kazuo Nakazato
An extended-gate CMOS sensor array with enzyme-immobilized microbeads for redox-potential glucose detection. BioCAS (2014)
Kiichi Niitsu, Naohiro Harigai, Takahiro J. Yamaguchi, Haruo Kobayashi
A low-offset cascaded time amplifier with reconfigurable inter-stage connection. IEICE Electron. Express 11 (10) (2014)
Shoko Ota, Kiichi Niitsu, Hiroki Kondo, Masaru Hori, Kazuo Nakazato
Live demonstration: A CMOS sensor platform with 1.2 µm × 2.05 µm electroless-plated 1024 × 1024 microelectrode array for high-sensitivity rapid direct bacteria counting. BioCAS (2014)
Hayato Komori, Kiichi Niitsu, Junko Tanaka, Yu Ishige, Masao Kamahori, Kazuo Nakazato
Live demonstration: An extended-gate CMOS sensor array with enzyme-immobilized microbeads for redox-potential glucose detection. BioCAS (2014)
Shoko Ota, Kiichi Niitsu, Hiroki Kondo, Masaru Hori, Kazuo Nakazato
A CMOS sensor platform with 1.2 µm × 2.05 µm electroless-plated 1024 × 1024 microelectrode array for high-sensitivity rapid direct bacteria counting. BioCAS (2014)
Masayuki Takihi, Kiichi Niitsu, Kazuo Nakazato
Charge-conserved analog-to-time converter for a large-scale CMOS biosensor array. ISCAS (2014)
Kiichi Niitsu, Naohiro Harigai, Haruo Kobayashi
Design methodology for determining the number of stages in a cascaded time amplifier to minimize area consumption. IEICE Electron. Express 10 (11) (2013)
Kiichi Niitsu, Naohiro Harigai, Takahiro J. Yamaguchi, Haruo Kobayashi
A Feed-Forward Time Amplifier Using a Phase Detector and Variable Delay Lines. IEICE Trans. Electron. (6) (2013)
Keisuke Kato, Fumitaka Abe, Kazuyuki Wakabayashi, Chuan Gao, Takafumi Yamada, Haruo Kobayashi, Osamu Kobayashi, Kiichi Niitsu
Two-Tone Signal Generation for ADC Testing. IEICE Trans. Electron. (6) (2013)
Satoshi Uemori, Masamichi Ishii, Haruo Kobayashi, Daiki Hirabayashi, Yuta Arakawa, Yuta Doi, Osamu Kobayashi, Tatsuji Matsuura, Kiichi Niitsu, Yuji Yano, Tatsuhiro Gake, Takahiro J. Yamaguchi, Nobukazu Takai
Multi-bit Sigma-Delta TDC Architecture with Improved Linearity. J. Electron. Test. 29 (6) (2013)
Kiichi Niitsu, Naohiro Harigai, Daiki Hirabayashi, Daiki Oki, Masato Sakurai, Osamu Kobayashi, Takahiro J. Yamaguchi, Haruo Kobayashi
Design of a clock jitter reduction circuit using gated phase blending between self-delayed clock edges. ASP-DAC (2013)
Yasunori Kobori, Qiulin Zhu, Murong Li, Feng Zhao, Zachary Nosker, Shu Wu, Shaiful N. Mohyar, Masanori Onozawa, Haruo Kobayashi, Nobukazu Takai, Kiichi Niitsu, Takahiro Odaguchi, Isao Nakanishi, Kenji Nemoto, Jun-Ichi Matsuda, Asahi Kasei
Single inductor dual output DC-DC converter design with exclusive control. APCCAS (2012)
Kiichi Niitsu, Shusuke Kawai, Noriyuki Miura, Hiroki Ishikuro, Tadahiro Kuroda
A 65fJ/b Inter-Chip Inductive-Coupling Data Transceivers Using Charge-Recycling Technique for Low-Power Inter-Chip Communication in 3-D System Integration. IEEE Trans. Very Large Scale Integr. Syst. 20 (7) (2012)
Kiichi Niitsu, Masato Sakurai, Naohiro Harigai, Takahiro J. Yamaguchi, Haruo Kobayashi
CMOS Circuits to Measure Timing Jitter Using a Self-Referenced Clock and a Cascaded Time Difference Amplifier With Duty-Cycle Compensation. IEEE J. Solid State Circuits 47 (11) (2012)
Takahiro J. Yamaguchi, Kunihiro Asada, Kiichi Niitsu, Mohamed Abbas, Satoshi Komatsu, Haruo Kobayashi, Jose A. Moreira
A New Procedure for Measuring High-Accuracy Probability Density Functions. Asian Test Symposium (2012)
Keisuke Kato, Fumitaka Abe, Kazuyuki Wakabayashi, Chuan Gao, Takafumi Yamada, Haruo Kobayashi, Osamu Kobayashi, Kiichi Niitsu
Two-Tone Signal Generation for Communication Application ADC Testing. Asian Test Symposium (2012)
Kiichi Niitsu, Masato Sakurai, Naohiro Harigai, Daiki Hirabayashi, Takahiro J. Yamaguchi, Haruo Kobayashi
A reference-free on-chip timing jitter measurement circuit using self-referenced clock and a cascaded time difference amplifier in 65nm CMOS. ASP-DAC (2012)
Kazuyuki Wakabayashi, Keisuke Kato, Takafumi Yamada, Osamu Kobayashi, Haruo Kobayashi, Fumitaka Abe, Kiichi Niitsu
Low-Distortion Sinewave Generation Method Using Arbitrary Waveform Generator. J. Electron. Test. 28 (5) (2012)
Hong Gao, Lin Xing, Yasunori Kobori, Feng Zhao, Haruo Kobayashi, Shyunsuke Miwa, Atsushi Motozawa, Zachary Nosker, Kiichi Niitsu, Nobukazu Takai, Takahiro Odaguchi, Isao Nakanishi, Kenji Nemoto, Jun-Ichi Matsuda
DC-DC converter with continuous-time feed-forward Sigma-Delta modulator control. APCCAS (2012)
Satoshi Uemori, Masamichi Ishii, Haruo Kobayashi, Yuta Doi, Osamu Kobayashi, Tatsuji Matsuura, Kiichi Niitsu, Yuta Arakawa, Daiki Hirabayashi, Yuji Yano, Tatsuhiro Gake, Nobukazu Takai, Takahiro J. Yamaguchi
Multi-bit sigma-delta TDC architecture with self-calibration. APCCAS (2012)
Kiichi Niitsu, Takahiro J. Yamaguchi, Masahiro Ishida, Haruo Kobayashi
Post-Silicon Jitter Measurements. Asian Test Symposium (2012)
Guanglei Jin, Hao Chen, Chuan Gao, Yunpeng Zhang, Haruo Kobayashi, Nobukazu Takai, Kiichi Niitsu, Khayrollah Hadidi
Digitally-controlled Gm-C bandpass filter. APCCAS (2012)
Kiichi Niitsu, Naohiro Harigai, Daiki Hirabayashi, Daiki Oki, Masato Sakurai, Osamu Kobayashi, Takahiro J. Yamaguchi, Haruo Kobayashi
A clock jitter reduction circuit using gated phase blending between self-delayed clock edges. VLSIC (2012)
Kiichi Niitsu, Vishwesh V. Kulkarni, Shinmo Kang, Hiroki Ishikuro, Tadahiro Kuroda
A 14-GHz AC-Coupled Clock Distribution Scheme With Phase Averaging Technique Using Single LC-VCO and Distributed Phase Interpolators. IEEE Trans. Very Large Scale Integr. Syst. 19 (11) (2011)
Masato Sakurai, Kiichi Niitsu, Naohiro Harigai, Daiki Hirabayashi, Daiki Oki, Takahiro J. Yamaguchi, Haruo Kobayashi
Analysis of jitter accumulation in interleaved phase frequency detectors for high-accuracy on-chip jitter measurements. ISOCC (2011)
Tomohiko Ogawa, Haruo Kobayashi, Satoshi Uemori, Yohei Tan, Satoshi Ito, Nobukazu Takai, Takahiro J. Yamaguchi, Kiichi Niitsu
Design for Testability That Reduces Linearity Testing Time of SAR ADCs. IEICE Trans. Electron. (6) (2011)

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Kiichi Niitsu