2025
M. Kim, P. Teeravichayangoan, D. Park, J. Shao, G. Seong, D. Seok and C. Kim, "A Homecare In-Bed Hardware System for Precise Real-Time ECG and HRV Monitoring With Layered Clothing", in Biosensors and Bioelectronics, Aug. 2025.
C. Oh, Y.-M. Kim, T. Lee, S.-M. Lee, J. Jung, H.-M. Bae, C. Kim and H. J. Lee, "Patch-Type Capacitive Micromachined Ultrasonic Transducer for Ultrasonic Power and Data Transfer", in Microsystems & Nanoengineering, Jun. 2025.
G.-H. Lee, Y. Lee, H. Seo, K. Jo, J. Yeo, S. Kim, J.-Y. Bae, C. Kim, C. Majidi, J. Kang, S.-K. Kang, S. Ryu and S. Park, "Meter-Scale Heterostructure Printing for High-Toughness Fiber Electrodes in Intelligent Digital Apparel", in Nature Communications, May 2025.
2024
J. Wang, R. Liu, Y. Tchoe, A. P. Buccino, A. Paul, D. Pre, A. D’Antonio-Chronowska, F. A. Kelly, A. G. Bang, C. Kim, S. Dayeh and G. Cauwenberghs, "Low-Power Fully Integrated 256-Channel Nanowire Electrode-on-Chip Neural Interface for Intracellular Electrophysiology", in IEEE Transactions on Biomedical Circuits and Systems, Jul. 2024.
H. Kim, Y. Park, C. Sung, J. Cho, S. Park and C. Kim, "DiTTO: A Distance Adaptive Over 100-mW Wireless Power Transfer System With 1.695-Mb/s Uplink Telemetry and a Shared Inductor Two-Output Regulating Rectification", in IEEE Journal of Solid-State Circuits, Mar. 2024.
2023
D. Cho, H. Cho, S. Oh, Y. Jung, S. Ha, C. Kim and M. Je, "A High-Efficiency Single-Mode Dual-Path Buck-Boost Converter With Reduced Inductor Current", in IEEE Journal of Solid-State Circuits, Jan. 2023.
2022
H. Kim, Y. Park and C. Kim, "A 13.56-MHz Wireless Power Transfer System With a Wide Operating Distance and Load Range for Biometric Smartcards", in IEEE Transactions on Power Electronics, Dec. 2022.
Y. Chang, J. Jang, J. Cho, J. Lee, Y. Son, S. Park and C. Kim, "Seamless Capacitive Body Channel Wireless Power Transmission Toward Freely Moving Multiple Animals in an Animal Cage", in IEEE Transactions on Biomedical Circuits and Systems, Aug. 2022.
M. Kim, S. Yoo and C. Kim, "Miniaturization for Wearable EEG Systems: Recording Hardware and Data Processing", in Biomedical Engineering Letters, Aug. 2022.
H. Cho, J.-H. Suh, C. Kim, S. Ha and M. Je, "An Intra-Body Power Transfer System With >1-mW Power Delivered to the Load and 3.3-V DC Output at 160-cm of On-Body Distance", in IEEE Transactions on Biomedical Circuits and Systems, Jul. 2022.
2021
Y. Park, S.-T. Koh, J. Lee, H. Kim, J. Choi, S. Ha, C. Kim and M. Je, "A Wireless Power and Data Transfer IC for Neural Prostheses Using a Single Inductive Link With Frequency-Splitting Characteristic", in IEEE Transactions on Biomedical Circuits and Systems, Dec. 2021.
A. Akinin, J. M. Ford, J. Wu, C. Kim, H. D. Thacker, P. P. Mercier and G. Cauwenberghs, "An Optically Addressed Nanowire-Based Retinal Prosthesis With Wireless Stimulation Waveform Control and Charge Telemetry", in IEEE Journal of Solid-State Circuits, Oct. 2021.
H. Heidari, N. Mcfarlane and C. Kim, "Guest Editorial Special Issue on Selected Papers From IEEE ISCAS 2020", IEEE Transactions on Biomedical Circuits and Systems, Aug. 2021.
J. Cho, G. Seong, Y. Chang and C. Kim, "Energy-Efficient Integrated Circuit Solutions Toward Miniaturized Closed-Loop Neural Interface Systems", in Frontiers in Neuroscience, May. 2021.
D. Seok, S. Lee, M. Kim, J. Cho and C. Kim, "Motion Artifact Removal Techniques for Wearable EEG and PPG Sensor Systems", in Frontiers in Electronics, May. 2021.
2020
J. Choi, S. Youn, J. Hwang, S. Ha, C. Kim and M. Je, "Energy-efficient high-voltage pulsers for ultrasound transducers", IEEE Transactions on Circuits and Systems II: Express Briefs, Nov. 2020.
H. Shin, J. Kim, D. Jang, D. Cho, Y. Jung, H. Cho, U. Lee, C. Kim, S. Ha and M. Je, "An energy-efficient three-stage amplifier achieving a high unity-gain bandwidth for large capacitive loads without using a compensation zero", IEEE Solid-State Circuits Letters, Nov. 2020.
~2019
C. Kim, J. Park, S. Ha, A. Akinin, R. Kubendran, P. Mercier and G. Cauwenberghs, "A 3 mm × 3 mm fully integrated wireless power receiver and neural interface system-on-chip", IEEE Transactions on Biomedical Circuits and Systems, Oct. 2019.
S. Joshi, C. Kim, C. M. Thomas and G. Cauwenberghs, "Digitally adaptive high-fidelity analog array signal processing resilient to capacitive multiplying DAC inter-stage gain error", IEEE Transactions on Circuits and Systems I: Regular Papers, Jul. 2019.
S. Ha, C. Kim, J. Park, G. Cauwenberghs and P. P. Mercier, "A fully integrated RF-powered energy-replenishing current-controlled stimulator", IEEE Transactions on Biomedical Circuits and Systems, Nov. 2018.
C. Kim, S. Joshi, H. Courellis, J. Wang, C. Miller and G. Cauwenberghs, "Sub-μVrms-Noise Sub-μW/Channel ADC-Direct Neural Recording With 200-mV/ms Transient Recovery Through Predictive Digital Autoranging", IEEE Journal of Solid-State Circuits, Oct. 2018.
C. Kim, C. Chae, Y. Yuk, C. Thomas, Y. Kim, J. Kwon, S. Ha, G. Cauwenberghs and G. Cho, "A 500-MHz Bandwidth 7.5-mVpp Ripple Power-Amplifier Supply Modulator for RF Polar Transmitters", IEEE Journal of Solid-State Circuits, Feb. 2018.
C. Kim, S. Ha, J. Park, A. Akinin, P. Mercier and G. Cauwenberghs, "A 144-MHz Fully Integrated Resonant Regulating Rectifier With Hybrid Pulse Modulation for mm-Sized Implants", IEEE Journal of Solid-State Circuits, Aug. 2017.
S. Joshi, C. Kim and G. Cauwenberghs, "A 6.5-µW/MHz Charge Buffer With 7-fF Input Capacitance in 65-nm CMOS for Noncontact Electropotential Sensing", IEEE Transactions on Circuits and Systems II: Express Briefs, Dec. 2016.
S. Ha, A. Akinin, J. Park, C. Kim, H. Wang, C. Maier, P. Mercier and G. Cauwenberghs, "Silicon-integrated high-density electrocortical interfaces", Proceedings of the IEEE, Aug. 2016.
C. Kim, S. Joshi, C. M. Thomas, S. Ha, L. E. Larson and G. Cauwenberghs, "A 1.3 mW 48 MHz 4 Channel MIMO Baseband Receiver With 65 dB Harmonic Rejection and 48.5 dB Spatial Signal Separation", IEEE Journal of Solid-State Circuits, Apr. 2016.
S. Ha, C. Kim, J. Park, S. Joshi and G. Cauwenberghs, "Energy Recycling Telemetry IC With Simultaneous 11.5 mW Power and 6.78 Mb/s Backward Data Delivery Over a Single 13.56 MHz Inductive Link", IEEE Journal of Solid-State Circuits, Sep. 2016.
S. Ha, C. Kim, Y. Chi, A. Akinin, C. Maier, A. Ueno and G. Cauwenberghs, "Integrated Circuits and Electrode Interfaces for Noninvasive Physiological Monitoring", IEEE Transactions on Biomedical Engineering, Feb. 2014.
Y. Yuk, S. Jung, C. Kim, H. Gwon, S. Choi and G. Cho, "PSR Enhancement Through Super Gain Boosting and Differential Feed-Forward Noise Cancellation in a 65-nm CMOS LDO Regulator," in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, Oct. 2014.
Y. Park, C. Kim and M. Je, "A Wireless Adiabatic Stimulator System with Current-Mode Power Reception and Stimulus Current Regulation Achieving Precise Charge Delivery and Electrode Scalability for Miniaturized Electroceuticals," 2025 IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, 2025.
Y. Park, P. D. Hung, D. Youn, D. Kwon, C. Kim and M. Je, "An Enhanced-Frequency-Splitting-Based Wireless Power and Data Transfer System Achieving 60.2% End-to-End Efficiency and 1 Mb/s Data Rate with a Sub-cm RX Coil for Miniaturized Implants," 2025 IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, 2025.
S. Yoo, G. Seong, J. Park and C. Kim, "Zero-Weight aware LSTM Architecture for Edge-Level EEG Classification," 2022 IEEE Biomedical Circuits and Systems Conference (BioCAS), Taipei, Taiwan, 2022.
P. D. Hung, H. Shin, Y. Park, N. K. Hoang, D. Cho, S. Ha, C. Kim and M. Je, "A 96.5%-Power-Efficiency Hybrid Buck-Boost Photovoltaic Energy Harvester Employing Adaptive FOCV MPPT Control for >98% MPPT Efficiency Across a 10,000× Dynamic Range," 2022 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits), Honolulu, HI, USA, 2022.
D Cho, H Cho, S Oh, Y Jung, S Ha, C Kim and M Je, "A Single-Mode Dual-Path Buck-Boost Converter with Reduced Inductor Current Across All Duty Cases Achieving 95.58% Efficiency at 1A in Boost Operation," 2022 IEEE Custom Integrated Circuits Conference (CICC), Newport Beach, CA, USA, 2022.
J. Wang, R. Liu, Y. Tchoe, A. P. Buccino, A. Paul, A. D'Antonio-Chronowska, K. A. Frazer, C. Kim, S. Dayeh and G. Cauwenberghs, "Low-Power 256-Channel Nanowire Electrode-on-Chip Neural Interface for Intracellular Electrophysiology," 2021 IEEE Biomedical Circuits and Systems Conference (BioCAS), Berlin, Germany, 2021.
D. Cho, H. Shin, H. Park, S. Oh, T. Lee, S. Ha, C. Kim and M. Je, "A Load-Current-Regulating OLED Lamp Driver Using a Hybrid Step-Up Converter with 93.21% Efficiency at a High Conversion Ratio of 4.1," ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference (ESSCIRC), Grenoble, France, 2021.
P. D. Hung, Y. Park, S. Kweon, T. Lee, H. Jeon, S. Koh, I. Cho, J. Yoon, I. Park, C. Kim, S. Ha and M. Je, "A Self-Powered Wireless Gas Sensor Node Based on Photovoltaic Energy Harvesting," 2021 Symposium on VLSI Circuits, Kyoto, Japan, 2021.
H. Shin, D. Jang, G. Kang, J. Kim, C. Kim, S. Ha and M. Je, "A 96.6%-Efficiency Continuous-Input-Current Hybrid Dual-Path Buck-Boost Converter with Single-Mode Operation and Non-Stopping Output Current Delivery," 2021 Symposium on VLSI Circuits, Kyoto, Japan, 2021.
Y. Park, S. Koh, J. Lee, H. Kim, J. Choi, S. Ha, C. Kim and M. Je, "33.7 A Frequency-Splitting-Based Wireless Power and Data Transfer IC for Neural Prostheses with Simultaneous 115mW Power and 2.5Mb/s Forward Data Delivery," 2021 IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, 2021.
J. Choi, Y. Park, J. Oh, J. Kim, J. Hwang, S. Ha, C. Kim and M. Je, "34.4 An Energy-Replenishing Ultrasound Pulser with 0.25CV2f Dynamic Power Consumption," 2021 IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, 2021.
A. Akinin, J. M. Ford, J. Wu, C. Kim, H. D. Thacker, P. P. Mercier and G. Cauwenberghs, "18.1 An Optically-Addressed Nanowire-Based Retinal Prosthesis with 73% RF-to-Stimulation Power Efficiency and 20nC-to-3μC Wireless Charge Telemetering," 2021 IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, 2021.
Y. Park, S. Koh, J. Lee, H. Kim, J. Choi, S. Ha, C. Kim and M. Je, "33.7 A Frequency-Splitting-Based Wireless Power and Data Transfer IC for Neural Prostheses with Simultaneous 115mW Power and 2.5Mb/s Forward Data Delivery," 2021 IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, 2021.
R. Kubendran, J. Park, R. Sharma, C. Kim, S. Joshi, G. Cauwenberghs and S. Ha, "A 4.2-pJ/Conv 10-b Asynchronous ADC with Hybrid Two-Tier Level-Crossing Event Coding," 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain, 2020.
H. Shin, J. Kim, D. Jang, D. Cho, Y. Jung, H. Cho, U. Lee, C. Kim, S. Ha and M. Je, "A 0.0046mm2 6.7μW Three-Stage Amplifier Capable of Driving 0.5-to-1.9nF Capacitive Load with >0.68MHz GBW without Compensation Zero," 2020 IEEE Symposium on VLSI Circuits, Honolulu, HI, USA, 2020.
J. Wang, A. Paul, D. Zhang, J. Wu, Y. Xu, Y. Zou, C. Kim and G. Cauwenberghs, "1024-Electrode Hybrid Voltage/Current-Clamp Neural Interface System-on-Chip with Dynamic Incremental-SAR Acquisition," 2020 IEEE Symposium on VLSI Circuits, Honolulu, HI, USA, 2020.
C. Kim, S. Joshi, H. Courellis, J. Wang, C. Miller and G. Cauwenberghs, "A 92dB dynamic range sub-μVrms-noise 0.8μW/ch neural-recording ADC array with predictive digital autoranging," 2018 IEEE International Solid-State Circuits Conference - (ISSCC), San Francisco, CA, USA, 2018.
J. Park, C. Kim, A. Akinin, S. Ha, G. Cauwenberghs and P. P. Mercier, "Wireless powering of mm-scale fully-on-chip neural interfaces," 2017 IEEE Biomedical Circuits and Systems Conference (BioCAS), Turin, Italy, 2017.
S. Joshi, C. Kim, S. Ha and G. Cauwenberghs, "From algorithms to devices: Enabling machine learning through ultra-low-power VLSI mixed-signal array processing," 2017 IEEE Custom Integrated Circuits Conference (CICC), Austin, TX, USA, 2017.
C. Kim, S. Ha, A. Akinin, J. Park, R. Kubendran, H. Wang, P. P. Mercier and G. Cauwenberghs, "Design of miniaturized wireless power receivers for mm-sized implants," 2017 IEEE Custom Integrated Circuits Conference (CICC), Austin, TX, USA, 2017.
S. Joshi, C. Kim, S. Ha, Y. M. Chi and G. Cauwenberghs, "21.7 2pJ/MAC 14b 8×8 linear transform mixed-signal spatial filter in 65nm CMOS with 84dB interference suppression," 2017 IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, 2017.
C. Kim, J. Park, A. Akinin, S. Ha, R. Kubendran, H. Wang, P. P. Mercier and G. Cauwenberghs, "A fully integrated 144 MHz wireless-power-receiver-on-chip with an adaptive buck-boost regulating rectifier and low-loss H-Tree signal distribution," 2016 IEEE Symposium on VLSI Circuits (VLSI-Circuits), Honolulu, HI, USA, 2016.
C. Kim, S. Joshi, C. Thomas, S. Ha, A. Akinin, L. Larson and G. Cauwenberghs, "A CMOS 4-channel MIMO baseband receiver with 65dB harmonic rejection over 48MHz and 50dB spatial signal separation over 3MHz at 1.3mW," 2015 Symposium on VLSI Circuits (VLSI Circuits), Kyoto, Japan, 2015.
S. Ha, A. Akinin, J. Park, C. Kim, H. Wang, C. Maier, G. Cauwenberghs and P. P. Mercier, "A 16-channel wireless neural interfacing SoC with RF-powered energy-replenishing adiabatic stimulation," 2015 Symposium on VLSI Circuits (VLSI Circuits), Kyoto, Japan, 2015.
C. Kim, S. Ha, J. Park, A. Akinin, P. P. Mercier and G. Cauwenberghs, "A 144MHz integrated resonant regulating rectifier with hybrid pulse modulation," 2015 Symposium on VLSI Circuits (VLSI Circuits), Kyoto, Japan, 2015.
J. Park, S. Ha, C. Kim, S. Joshi, T. Yu, W. Ma and G. Cauwenberghs, "A 12.6 mW 8.3 Mevents/s contrast detection 128×128 imager with 75 dB intra-scene DR asynchronous random-access digital readout," 2014 IEEE Biomedical Circuits and Systems Conference (BioCAS) Proceedings, Lausanne, Switzerland, 2014.
C. Kim, S. Ha, C. Thomas, S. Joshi, J. Park, L. Larson and G. Cauwenberghs, "A 7.86 mW +12.5 dBm in-band IIP3 8-to-320 MHz capacitive harmonic rejection mixer in 65nm CMOS," ESSCIRC 2014 - 40th European Solid State Circuits Conference (ESSCIRC), Venice Lido, Italy, 2014.
S. Ha, C. Kim, J. Park, S. Joshi and G. Cauwenberghs, "Energy-recycling integrated 6.78-Mbps data 6.3-mW power telemetry over a single 13.56-MHz inductive link," 2014 Symposium on VLSI Circuits Digest of Technical Papers, Honolulu, HI, USA, 2014.
Y. Yuk, S. Jung, B. Lee, S. Wang, C. Kim and G. Cho, "A CMOS LDO regulator with high PSR using Gain Boost-Up and Differential Feed Forward Noise Cancellation in 65nm process," 2012 Proceedings of the ESSCIRC (ESSCIRC), Bordeaux, France, 2012.
J. Lee, S. Jin, D. Kim, Y. Ku, C. Kim, B. Park, H. Kim, S. Ahn, J. Lee and S. Hong, "A low-power small-area open loop digital DLL for 2.2Gb/s/pin 2Gb DDR3 SDRAM," IEEE Asian Solid-State Circuits Conference 2011, Jeju, Korea (South), 2011.
C. Kim, C. Chae, Y. Yuk, Y. Kim, J. Kwon and G. Cho, "A 105db-gain 500mhz-bandwidth 0.1Ω-output-impedance amplifier for an amplitude modulator in 65nm cmos," 2010 IEEE International Solid-State Circuits Conference - (ISSCC), San Francisco, CA, USA, 2010.
T. Kwak, M. Lee, Y. Yuk, K. Lee, H. Park, C. Kim and G. Cho, "Hybrid switching amplifier using a novel two-quadrant wideband buffer for dynamic power supply applications," 2008 IEEE Power Electronics Specialists Conference, Rhodes, Greece, 2008.