Conference
[C16] Hafiz Usman Mahmood, Keun-Mok Kim, Dinh Thinh Tran, Jinglong Xu, Abdul Qahir, Jinho Ko, Jusung Kim, Sang-Gug Lee, and Kyung-Sik Choi, "A 24% Efficient, 15.36 dBm Output Power, Multi-Standard Digital Polar Transmitter with 7-bit Phase Interpolator- based BFSK Modulator and 23 dB Sidelobe Suppressed PA for Low-Power Wide Area Networks," 2024 IEEE Asian Solid-State Circuits Conference (A-SSCC) (Accepted)
[C15] Youngin Kim, Laurenz Kulmer, Killian Keller, Jeongsoo Park, Basem Abdelaziz Abdelmagid, Kyung-Sik Choi, Dongwon Lee, Yuqi Liu, Juerg Leuthold, and Hua Wang, “A Co-Integrated Optical Phased Array, Mach-Zehnder Modulator and Mm-Wave Driver for Free-Space Communication,” 2024 Custom Integrated Circuits Conference (CICC), Denver, CO, USA, 2024, pp. 1-2
[C14] Dongwon Lee†, Kyung-Sik Choi†, Fuze Jiang†, Hangxing Liu, Doohwan Jung, Ying Kong, Marco Saif, Zhikai Huang, Jing Wang, and Hua Wang, “Fully Integrated CMOS Ferrofluidic Biomolecular Processing Platform with On-Chip Droplet-Based Manipulation, Multiplexing, and Sensing,” 2024 IEEE International Solid- State Circuits Conference - (ISSCC) (†Co-first Author)
[C13] Akzhol Baktiyar, Young-Nam Lee, Min Jae Jung, Sang-Gug Lee, and Kyung-Sik Choi, “Reduction of Electrochemical Impedance Spectroscopy Measurement Time for Lithium-ion Batteries based on Compressive Sensing,” IECON 2023 – 49th Annual Conference of the IEEE Industrial Electronics Society
[C12] Min Jae Jung, Akzhol Baktiyar, Young-Nam Lee, Sang-Gug Lee, Tae-Kyu Kang, Soo-Youn Park, Juhyun Song, and Kyung-Sik Choi, “Experimental Analysis for Fast Lithium Plating Detection in Voltage Relaxation Profile of Lithium-Ion Batteries,” IECON 2023 – 49th Annual Conference of the IEEE Industrial Electronics Society
[C11] Young-Nam Lee, Min Jae Jung, Seong-Won Jo, Gul Rahim, Sang-Gug Lee, and Kyung-Sik Choi, "Fast-settling Onboard Electrochemical Impedance Spectroscopy System Adopting Two-stage Hilbert Transform," IECON 2023 – 49th Annual Conference of the IEEE Industrial Electronics Society
[C10] Dongwon Lee, Jeongsoo Park, Kyung-Sik Choi, Yuqi, Liu, and Hua Wang, “A 137-GHz Ultra-Wide Bandwidth High-Linearity CMOS Distributed Amplifier for High-Speed Communication,” 2023 IEEE European Solid- State Circuits Conference (ESSCIRC)
[C9] Min Jae Jung, Young-Nam Lee, Juhyun Song, Sang-Gug Lee, and Kyung-Sik Choi, “Experimental Analysis of Measurement Time Reduction in Electrochemical Impedance Spectroscopy using the Distributed of Relaxation Time,” 2023 IEEE Energy Conversion Congress & Expo (ECCE)
[C8] Young-Nam Lee, Kyung-Sik Choi, Seong-Won Jo, Gul Rahim, Kyeongha Kwon, and Sang-Gug Lee, “Fast-settling Onboard Electrochemical Impedance Spectroscopy System Adopting Quasi-linear-phase Band-pass Filter,” 2023 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), Kuala Lumpur, Malaysia, 2023, pp. 1-6, doi: 10.1109/I2MTC53148.2023.10176024
[C7] Keun-Mok Kim, Kyung-Sik Choi, Hyunki Jung, Byeonghun Yun, Subin Kim, Wonkab Oh, Eui-Soo Lee, Sujin Park, Eui-Rim Jeong, Jinho Ko, and Sang-Gug Lee, “24.7 An LPWAN Radio with a Reconfigurable Data/Duty-Cycled-Wake-up Receiver,” 2022 IEEE International Solid- State Circuits Conference - (ISSCC), 2022, pp. 404-406, doi: 10.1109/ISSCC42614.2022.9731641
[C6] Keun-Mok Kim, Hyun-Gi Seok, Jeong-Il Seo, Kyung-Sik Choi, Sang-Gug Lee, “0.6V 8.1/0.2μW Ultra-Low-Power Logarithmic Power Detectors Employing Subthreshold MOS Transistors,” 2021 IEEE Asian Solid-State Circuits Conference (A-SSCC), 2021, pp. 1-3, doi: 10.1109/A-SSCC53895.2021.9634830
[C5] Byeonghun Yun, Dae-Woong Park, Kyung-Sik Choi, Ho-Jin Song, Sang-Gug Lee, “245/243GHz, 9.2/10.5dBm Saturated Output Power, 4.6/2.8% PAE, and 28/26dB Gain Power Amplifiers in 65nm CMOS Adopting 2- and 4-Way Power Combining,” 2021 IEEE Asian Solid-State Circuits Conference (A-SSCC), 2021, pp. 1-3, doi: 10.1109/A-SSCC53895.2021.9634180
[C4] Kyung-Sik Choi, Jinho Ko, and Sang-Gug Lee, “A Single-Supply Single-Core Inverse Class-D Digital Power Amplifier with Enhanced Power Back-Off Efficiency Adopting Output Power Scaling Technique,” 2021 Symposium on VLSI Circuits, 2021, pp. 1-2, doi: 10.23919/VLSICircuits52068.2021.9492341
[C3] Kyung-Sik Choi, Keun-Mok Kim, Jinho Ko, and Sang-Gug Lee, “A 5 dBm 30.6% Efficiency 915 MHz Transmitter with 210 μW ULP PLL Employing Frequency Tripler and Digitally Controlled Duty/Phase Calibration Buffer,” 2020 IEEE Asian Solid- State Circuits Conference (ASSCC), Hiroshima, Japan, 2020, pp. 1-4, doi: 10.1109/A-SSCC48613.2020.9336141
[C2] Kyung-Sik Choi, Dzuhri Radityo Utomo, Keun-Mok Kim, Byeonghun Yun, Sang-Gug Lee, and In-Young Lee, “29.7 A 490GHz 32mW Fully Integrated CMOS Receiver Adopting Dual-Locking FLL,” 2020 IEEE International Solid- State Circuits Conference - (ISSCC), San Francisco, CA, USA, 2020, pp. 452-454, doi: 10.1109/ISSCC19947.2020.9062916
[C1] Keun-Mok Kim, Eui-Rim Jeong, Kyung-Sik Choi, Subin Kim, Byeonghun Yun, Hyunki Jung, Wonkab Oh, Jinho Ko, and Sang-Gug Lee, “A 915 MHz, 499 μW, –99 dBm, and 100 kbps BFSK Direct Conversion Receiver,” ESSCIRC 2019 - IEEE 45th European Solid- State Circuits Conference (ESSCIRC), Cracow, Poland, 2019, pp. 209-212, doi: 10.1109/ESSCIRC.2019.8902859