CIRC Lab: Journals • Conferences • Patents
Embedded Files
Journals
from 2022
Target Journals :
IEEE JSSC, IEEE TBioCAS,
IEEE TCAS-I, and IEEE TPE
[8] A Single-Stage Single-Coil Wireless Multi-Channel Adiabatic Supply Stimulation System for Multiple Source Current Steering Deep Brain Stimulation (under review)
IEEE Transactions on Biomedical Circuits and Systems (TBioCAS)
[Q1, IF:4.9, JCR:21.9%] – Top Journal in biomedical engineering field
Hyun-Su Lee, Kyeongho Eom, Joonghoon Kang, Hojae Chon, Taewoo Kim, Jaesoon Joo, Taekyung Kim, Young-Min Shon, and Hyung-Min Lee
🐭In vivo validation was conducted in collaboration with Samsung Medical Center.
[7] A Single-Input Multi-Output Resonant Regulating Rectifier Generating Three Outputs in a Half Cycle for Wirelessly Powered Biomedical Devices
IEEE Transactions on Circuits and Systems I (TCAS-I)
[Q1, IF:5.2, JCR:19.7%] – Top Journal in circuit field
Hyun-Su Lee, Kyeongho Eom, and Hyung-Min Lee
Jun. 2025. ✔Click
👁️Retinal prosthesis experiments were further conducted with the SIMO R3 IC.
🎉Selected as TCAS-I Highlight Paper
[6] A 13.56-MHz 93.5%-Efficiency Optimal On/Off Timing Tracking Active Rectifier with Digital Feedback-Based Adaptive Delay Control
IEEE Transactions on Biomedical Circuits and Systems (TBioCAS)
[Q1, IF:4.9, JCR:21.9%] – Top Journal in biomedical engineering field
Jisan Ahn, Hyun-Su Lee, Kyeongho Eom, Woojoong Jung, and Hyung-Min Lee
Jun. 2025. ✔Click
[5] A Power-Efficient Envelope-Detector-Less Amplitude-Shift-Keying Forward Telemetry for Wirelessly Powered Biomedical Devices
IEEE Transactions on Biomedical Circuits and Systems (TBioCAS)
[Q1, IF:4.9, JCR:21.9%] – Top Journal in biomedical engineering field
Hyun-Su Lee and Hyung-Min Lee
Apr. 2025. ✔Click
[4] A 92.7%-Efficiency 6.78-MHz Energy-Resuscitating Resonant Regulating Rectifier with Dual Outputs for Wirelessly Powered Devices
IEEE Journal of Solid-State Circuits (JSSC)
[Q1, IF:5.6, JCR:17.3%] – Top Journal in integrated circuit field
Hyun-Su Lee and Hyung-Min Lee
Oct. 2024. ✔Click
[3] A 13.56-MHz Wireless Power and Data Transfer System with Current-Modulated Energy-Reuse Back Telemetry and Energy-Adaptive Voltage Regulation
IEEE Journal of Solid-State Circuits (JSSC)
[Q1, IF:5.6, JCR:17.3%] – Top Journal in integrated circuit field
Minjae Kim, Hyun-Su Lee, Jisan Ahn, and Hyung-Min Lee
Feb. 2023. ✔Click
[2] A Load-Insensitive Hybrid LSK Back Telemetry System with Slope-Based Demodulation for Inductively Powered Biomedical Devices
IEEE Transactions on Biomedical Circuits and Systems (TBioCAS)
[Q1, IF:4.9, JCR:21.9%] – Top Journal in biomedical engineering field
Hyun-Su Lee, Jisan Ahn, Minil Kang, and Hyung-Min Lee
Aug. 2022. ✔Click
🎉Selected as Presidential Award of the Republic of Korea (only one in 2022)
[1] A Power-Efficient Resonant Current Mode Receiver with Wide Input Range over Breakdown Voltages Using Automated Maximum Efficiency Control
IEEE Transactions on Power Electronics (TPE)
[Q1, IF:6.5, JCR:11.8%] – Top Journal in power engineering field
Hyun-Su Lee, Jisan Ahn, Kyeongho Eom, Woojoong Jung, Seung-Ju Lee, Yeon-Woo Jeong, Se-Un Shin, and Hyung-Min Lee
Jul. 2022. ✔Click
CIRC Lab: Journals • Conferences • Patents
Conferences
from 2021
Target Conferences :
IEEE ISSCC, IEEE VLSI, IEEE CICC, IEEE ASSCC, IEEE ESSERC, and IEEE BioCAS
[7] A 90.7%-Efficiency Hybrid Optogenetic Stimulation System with Sub-Threshold Electrical Stimuli Achieving 70.6% Optical Energy Saving
IEEE International Solid-State Circuits Conference (ISSCC) at San Francisco, California, US
– Top Conference in integrated circuit field
Joonghoon Kang, Hyeonhee Roh, Kyeongho Eom, Hyun-Su Lee, Hohae Chon, Maesoon Im, and Hyung-Min Lee
Feb. 2026. ✔Click
[6] An 80×80μm2/Pixel 55.48dB-Wide-DR 400-Pixel Subretinal Prosthesis SoC with Power-Aware Light Adaptation and Charge-Recycling Local Dynamic Supply
IEEE International Solid-State Circuits Conference (ISSCC) at San Francisco, California, US
– Top Conference in integrated circuit field
Kyeongho Eom, Hyun-Su Lee, Minju Kim, Maesoon Im, and Hyung-Min Lee
Feb. 2026. ✔Click
[5] A 90.8%-Efficiency SIMO Resonant Regulating Rectifier Generating 3 Outputs in a Half Cycle with Distributed Multi-Phase Control for Wirelessly-Powered Implantable Devices
IEEE International Solid-State Circuits Conference (ISSCC) at San Francisco, California, US
– Top Conference in integrated circuit field
Hyun-Su Lee, Kyeongho Eom, and Hyung-Min Lee
Feb. 2024. ✔Click
[4] A 92.7%-Efficiency 6.78-MHz Dual-Output Energy-Resuscitating Resonant Regulating Rectifier for Wirelessly Powered Systems
IEEE Asian Solid-State Circuits Conference (ASSCC) at Haikou, Hainan, China
Hyun-Su Lee and Hyung-Min Lee
Nov. 2023. ✔Click
[3] A 93.5%-Efficiency 13.56-MHz-Bandwidth Optimal On/Off Tracking Active Rectifier with Fully Digital Feedback-Based Delay Control for Adaptive Efficiency Compensation
IEEE Symposium on VLSI Circuits (VLSI) at Kyoto, Japan
Jisan Ahn, Hyun-Su Lee, Kyeongho Eom, Woojoong Jung, and Hyung-Min Lee
Jun. 2023. ✔Click
[2] A Load-Insensitive Hybrid Back Telemetry System for Wirelessly-Powered Implantable Devices
IEEE Biomedical Circuits and Systems Conference (BioCAS) at Berlin, Germany (virtual conference)
Hyun-Su Lee, Minjae Kim, Jisan Ahn, and Hyung-Min Lee
Oct. 2021. ✔Click
[1] An Efficient Wireless Power and Data Transfer System with Current-Modulated Energy-Reuse Back Telemetry and Energy-Adaptive Dual-Input Voltage Regulation
IEEE Custom Integrated Circuits Conference (CICC) at Austin, Texas, US (virtual conference)
Minjae Kim, Hyun-Su Lee, and Hyung-Min Lee
Apr. 2021. ✔Click
CIRC Lab: Journals • Conferences • Patents
Patents
from 2021
Target Countries : Singapore, US, and South Korea
[6] Multi-Channel Adiabatic Supply Voltage Stimulator and Operation Method Thereof
Korean Patent: KR10-2025-0209767 filed on Dec. 24, 2025.
Hyung-Min Lee and Hyun-Su Lee
[5] Envelope-Detector-Less Forward Data Receiving Device
US Patent: US 19079164 filed on Mar. 13, 2025.
Korean Patent: KR10-2024-0052317 filed on Apr. 18, 2024.
Hyung-Min Lee and Hyun-Su Lee
[4] Hybrid Comparator Circuit Device
US Patent: US19039548 filed on Jan. 28, 2025.
Korean Patent: KR10-2024-0037826 filed on Mar. 19, 2024, and KR10-2915511 granted on Jan. 16, 2026.
Hyung-Min Lee and Hyun-Su Lee
[3] Single-Input Multi-Output Resonant Regulating Rectifier
US Patent: US19014105 filed on Jan. 8, 2025.
Korean Patent: KR10-2024-0032569 filed on Mar. 07, 2024.
Hyung-Min Lee and Hyun-Su Lee
[2] Resonant Regulating Rectifier
US Patent: US18909716 filed on Oct. 8, 2024.
Korean Patent: KR10-2023-0137743 filed on Oct. 16, 2023, and KR10-2818664 granted on Jun. 04, 2025.
Hyung-Min Lee and Hyun-Su Lee
[1] Back-Data Transmission Circuit Robust to Load Changes and Method Thereof
US Patent: US17825586 filed on May 26, 2022, and US11870277B2 granted on Jan. 9, 2024
Korean Patent: KR10-2021-0089783 filed on Jul. 08, 2021, and KR10-2492319 granted on Jan. 19, 2023.
Hyung-Min Lee and Hyun-Su Lee
CIRC Lab: Book and Chapters
Book
from 2026
Target Books : Wiley, Pearson, and Springer
[1] Energy-Management Integrated Circuit Design for Wireless Power and Data Transfer Applications
Springer
Byunghun Lee, Hyun-Su Lee, Junhyeok Lee, and Hyung-Min Lee
Feb. 2026. ✔Click
We will further expand the field
Final Goal of CIRC Lab
Until now, our work has focused on wireless power transfer, forward/ backward data telemetry, and neural stimulation. We are now taking a major step forward by integrating these functions—along with recording and processing—into a single fully integrated IC. Our goal goes beyond IC design and aims to enable groundbreaking biological discoveries worthy of publication in prestigious biomedical journals.
Swirling Green Rooftops at NTU
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