Hybrid Filter Based Simultaneous Localization and Mapping for a Mobile Robot. - Kyung-Sik Choi; Bong-Keun Song; Suk-Gyu Lee (ISNN (3), 2009)

Enhanced Mapping of Multi-robot Using Distortion Reducing Filter Based SIFT. - Kyung-Sik Choi; Yoon-Gu Kim; Jinung An; Suk-Gyu Lee (ICSI (1), 2010)

Object Recognition of a Mobile Robot Based on SIFT with De-speckle Filtering. - Zhiguang Xu; Kyung-Sik Choi; Yanyan Dai; Suk-Gyu Lee (ICSI (2), 2010)

An Enhanced Formation of Multi-robot Based on A* Algorithm for Data Relay Transmission. - Zhiguang Xu; Kyung-Sik Choi; Yoon-Gu Kim; Jinung An; Suk-Gyu Lee (ICSI (2), 2011)

A 915 MHz, 499 μW, -99 dBm, and 100 kbps BFSK Direct Conversion Receiver. - Keun-Mok Kim; Eui-Rim Jeong; Kyung-Sik Choi; Subin Kim; Byeonghun Yun; Hyunki Jung; Wonkab Oh; Jinho Ko; Sang-Gug Lee 001 (ESSCIRC, 2019)

A 5 dBm 30.6% Efficiency 915 MHz Transmitter with 210 μW ULP PLL Employing Frequency Tripler and Digitally Controlled Duty/Phase Calibration Buffer. - Kyung-Sik Choi; Keun-Mok Kim; Jinho Ko; Sang-Gug Lee 001 (A-SSCC, 2020)

29.7 A 490GHz 32mW Fully Integrated CMOS Receiver Adopting Dual-Locking FLL. - Kyung-Sik Choi; Dzuhri Radityo Utomo; Keun-Mok Kim; Byeonghun Yun; Sang-Gug Lee 001; In-Young Lee (ISSCC, 2020)

0.6 V 8.1/0.2µW Ultra-Low-Power Logarithmic Power Detectors Employing Subthreshold MOS Transistors. - Keun-Mok Kim; Hyun-Gi Seok; Jeong-Il Seo; Kyung-Sik Choi; Sang-Gug Lee 001 (A-SSCC, 2021)

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. - Byeonghun Yun; Dae-Woong Park; Kyung-Sik Choi; Ho-Jin Song; Sang-Gug Lee 001 (A-SSCC, 2021)

A Single-Supply Single-Core Inverse Class-D Digital Power Amplifier with Enhanced Power Back-Off Efficiency Adopting Output Power Scaling Technique. - Kyung-Sik Choi; Jinho Ko; Sang-Gug Lee 001 (VLSI Circuits, 2021)

A Sub-nW Single-Supply 32-kHz Sub-Harmonic Pulse Injection Crystal Oscillator. - Keun-Mok Kim; Subin Kim; Kyung-Sik Choi; Hyunki Jung; Jinho Ko; Sang-Gug Lee 001 (IEEE J. Solid State Circuits, 2021)

A -123-dBm Sensitivity Split-Channel BFSK Reconfigurable Data/Wake-Up Receiver for Low-Power Wide-Area Networks. - Keun-Mok Kim; Hyun-Gi Seok; Oh-Yong Jung; Kyung-Sik Choi; Byeonghun Yun; Subin Kim; Wonkab Oh; Eui-Rim Jeong; Jinho Ko; Sang-Gug Lee 001 (IEEE J. Solid State Circuits, 2021)

A Low-Noise and Fast-Settling UHF RFID Receiver With Digitally Controlled Leakage Cancellation. - Subin Kim; Kyung-Sik Choi; Keun-Mok Kim; Jinho Ko; Jusung Kim; Sang-Gug Lee 001 (IEEE Trans. Circuits Syst. II Express Briefs, 2021)

An LPWAN Radio with a Reconfigurable Data/Duty-Cycled-Wake-Up Receiver. - Keun-Mok Kim; Kyung-Sik Choi; Hyunki Jung; Byeonghun Yun; Subin Kim; Wonkab Oh; Eui-Soo Lee; Sujin Park; Eui-Rim Jeong; Jinho Ko; Sang-Gug Lee 001 (ISSCC, 2022)

A 0.3-to-1-GHz IoT Transmitter Employing Pseudo-Randomized Phase Switching Modulator and Single-Supply Class-G Harmonic Rejection PA. - Kyung-Sik Choi; Jinho Ko; Keun-Mok Kim; Jusung Kim; Sang-Gug Lee 001 (IEEE J. Solid State Circuits, 2022)

A 915 MHz IoT Transmitter Employing Frequency Tripler and Digitally Controlled Duty-Cycle/Phase Calibration. - Kyung-Sik Choi; Keun-Mok Kim; Jinho Ko; Sang-Gug Lee 001 (IEEE J. Solid State Circuits, 2022)

A Fully Integrated 490-GHz CMOS Receiver Adopting Dual-Locking Receiver-Based FLL. - Kyung-Sik Choi; Keun-Mok Kim; Dzuhri Radityo Utomo; In-Young Lee; Sang-Gug Lee 001 (IEEE J. Solid State Circuits, 2022)

CMOS Fractional-N Frequency Synthesizer for UHF RFID Reader Applications With Transformer-Based ISF Manipulation VCO. - Hyunki Jung; Kyung-Sik Choi; Keun-Mok Kim; Daehoon Jo; Jaeheon Lee; Jusung Kim; Jinho Ko; Sang-Gug Lee 001 (IEEE Trans. Circuits Syst. II Express Briefs, 2022)

A 137-GHz Ultra-Wide Bandwidth High-Linearity CMOS Distributed Amplifier for High-Speed Communication. - Dongwon Lee 009; Jeongsoo Park 006; Kyung-Sik Choi; Yuqi Liu; Hua Wang 006 (ESSCIRC, 2023)

Fast-settling Onboard Electrochemical Impedance Spectroscopy System Adopting Quasi-linear-phase Band-pass Filter. - Young-Nam Lee; Kyung-Sik Choi; Seong-Won Jo; Gul Rahim; Kyeongha Kwon; Sang-Gug Lee 001 (I2MTC, 2023)

Reduction of Electrochemical Impedance Spectroscopy Measurement Time for Lithium-ion Batteries Based on Compressive Sensing. - Akzhol Baktiyar; Young-Nam Lee; Min Jae Jung; Sang-Gug Lee 001; Kyung-Sik Choi (IECON, 2023)

Experimental Analysis for Fast Lithium Plating Detection in Voltage Relaxation Profile of Lithium-Ion Batteries. - Min Jae Jung; Akzhol Baktiyar; Young-Nam Lee; Sang-Gug Lee 001; Taekyu Kang; Soo-Youn Park; Juhyun Song; Kyung-Sik Choi (IECON, 2023)

Fast-Settling Onboard Electrochemical Impedance Spectroscopy System Adopting Two-Stage Hilbert Transform. - Young-Nam Lee; Min Jae Jung; Seong-Won Jo; Gul Rahim; Sang-Gug Lee 001; Kyung-Sik Choi (IECON, 2023)

A -124-dBm Sensitivity Interference-Resilient Direct-Conversion Duty-Cycled Wake-Up Receiver Achieving 0.114 mW at 1.966-s Wake-Up Latency. - Keun-Mok Kim; Kyung-Sik Choi; Hyunki Jung; Byeonghun Yun; Jinglong Xu; Jinho Ko; Sang-Gug Lee 001 (IEEE J. Solid State Circuits, 2023)

A 250-GHz Wideband Direct-Conversion CMOS Receiver Adopting Baseband Equalized Low-Loss Resistive Passive Mixer. - Hyo-Ryeong Jeon; Byeonghun Yun; Ho-Keun Lee; Sang-Gug Lee 001; Kyung-Sik Choi (IEEE Trans. Circuits Syst. II Express Briefs, 2023)

A Multi-Functional CMOS Biosensor Array With On-Chip DEP-Assisted Sensing for Rapid Low-Concentration Analyte Detection and Close-Loop Particle Manipulation With No External Electrodes. - Dongwon Lee 009; Doohwan Jung; Fuze Jiang; Gregory Villiam Junek; Jongseok Park 001; Hangxing Liu; Ying Kong; Adam Y. Wang; Youngin Kim 001; Kyung-Sik Choi; Jing Wang 190; Hua Wang 006 (IEEE Trans. Biomed. Circuits Syst., 2023)

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. - Hafiz Usman Mahmood; Keun-Mok Kim; Thinh Tran-Dinh; Jinglong Xu; Abdul Qahir; Jinho Ko; Jusung Kim; Sang-Gug Lee 001; Kyung-Sik Choi (A-SSCC, 2024)

A Co-Integrated Optical Phased Array, Mach-Zehnder Modulator and Mm-Wave Driver for Free-Space Communication. - Youngin Kim 001; Laurenz Kulmer; Killian Keller; Jeongsoo Park 006; Basem Abdelaziz Abdelmagid; Kyung-Sik Choi; Dongwon Lee 009; Yuqi Liu; Juerg Leuthold; Hua Wang 006 (CICC, 2024)

AI-Assisted Design Automation of Circular and Asymmetric Inductor in CMOS Technology. - Jin-Won Hyun; Dana Kim; Kyung-Sik Choi; Jae-Won Nam (ISOCC, 2024)

17.6 Fully Integrated CMOS Ferrofluidic Biomolecular Processing Platform with On-Chip Droplet-Based Manipulation, Multiplexing and Sensing. - Dongwon Lee 009; Kyung-Sik Choi; Fuze Jiang; Hangxing Liu; Doohwan Jung; Ying Kong; Marco Saif; Zhikai Huang; Jing Wang 190; Hua Wang 006 (ISSCC, 2024)

High-Power 150/245-GHz Fundamental Oscillators With 12.1/-2.54-dBm Peak Output Power for Phased Array Transceivers. - Abdul Qahir; Dzuhri Radityo Utomo; Byeonghun Yun; Kyung-Sik Choi; Dae-Woong Park; Sang-Gug Lee 001 (IEEE J. Solid State Circuits, 2024)

Ultrawideband Distributed Amplifier With Positive Feedback and Intrastack Coupling. - Dongwon Lee 009; Kyung-Sik Choi; Yuqi Liu; Jeongsoo Park 006; Laurenz Kulmer; Tzu-Yuan Huang; Juerg Leuthold; Hua Wang 006 (IEEE J. Solid State Circuits, 2025)

High-Power 270-GHz Oscillator With Harmonic Output Power Optimization Using Series Resonance Feedback. - Abdul Qahir; Kyung-Sik Choi; Jong-Phil Hong; Sang-Gug Lee 001 (IEEE Trans. Circuits Syst. II Express Briefs, 2025)

A D-Band Concurrent 20-Beam MIMO Transmitter Array With a Four-Element Joint Static/Dynamic Beam-Multiplication Beamformer. - Kyung-Sik Choi; Basem Abdelaziz Abdelmagid; Yuqi Liu; Hua Wang 006 (IEEE J. Solid State Circuits, 2025)

A 150-GHz Single-to-Differential LNA Adopting Wideband Gmax-Cores Based on Single-Ended Compact Lumped L-C-L and Differential Coupled-Line Embedding Networks. - Hokeun Lee; Hyo-Ryeong Jeon; Sang-Gug Lee 001; Kyung-Sik Choi (IEEE J. Solid State Circuits, 2025)