sparc Lab

Welcome to signal processing on analog & rf communication (sparc) lab 

Latest News

• [2025.08] Aulya​ ​Sholehah​ ​Wataawa​ ​Sau (M.S. candidate)'s paper, "Phase Manipulation VCO Employing Current Harmonic Cancellation Achieving 5 dB Phase Noise Reduction at 1/f^3 Region", is accepted and will be presented at APCCAS​ ​2025. Congrats to Aulya!

• [2025.08] Two papers from our group is accepted to ASSCC 2025, one of the premiere solid-state circuits conference. The papers (see the details below) are the representative outcome of our completed projects "Development of Cryogenic CMOS Interconnect Electronics for Large-Scale and Reliable Quantum Computer" (한국연구재단, 기초연구실) and "0.2-1GHz Wide-area Transceiver SoC Achieving Sub-10uW Wake-up Receive Mode" (민군협력진흥원, 민군겸용기술개발사업). 

• [2025.08] Hyeon-Sik Ahn (Ph.D. candidate)'s paper, "A 4-to-7GHz, 52.3dB SFDR, and 48K Noise Temperature Cryo-CMOS Based Noise-Canceling Receiver for Superconducting Multi-Qubits Read-Out", is accepted and will be presented at ASSCC​ ​2025. Congrats to Hyeon-Sik!

• [2025.08] Dinh Thinh Tran (Ph.D. candidate)'s paper, "Multi-Band​ ​LPWAN​ ​Transceiver​ ​with​ ​Two-Step​ ​Wake-Up​ ​Receiver​ ​and​ ​Switched-Capacitor​ ​PA-Based​ ​Transmitter​ ​Achieving​ ​-125​ ​dBm​ ​Sensitivity,​ ​6.7​ ​μW​ ​at​ ​1​ ​s​ ​Wake-Up​ ​Latency,​ ​and​ ​1​ ​Mbps​ ​BFSK​ ​Modulation", is accepted and will be presented at ASSCC​ ​2025. Congrats to Thinh! 

• [2025.07] Akram Muhamad Rafli (M.S. graduate)'s paper, "Differential Injection Locked Frequency Divider with Dual Darlington Pairs for Wideband ÷4 Frequency Division in CMOS ", has been accepted to the IEEE ACCESS (IF=3.6). Congrats to Akram!  [Link] 

• [2025.06] Prof. Kim will be serving as a TPC (Technical Program Committee, RF & Wireless division) and OC (Organizing Committee, Treasurer) for SSCS flagship conference ASSCC-2025 [Link]​ 

• [2025.05] Our joint research work with Prof. Cho at SKKU will be presented at ESSERC​ ​2025 ("A 9-72V Input to 1-2.2V Output Single-Inductor Multi-Path Multi-Stage Hybrid DC-DC Converter Achieving 87.8% Peak Efficiency with 110m-Ohms DCR Inductor")​.

• [2025.05] Our joint research work with Prof. Nam at Seoul-Tech will be presented at ISVLSI​ ​2025 ("MASH​ ​Digital​ ​Delta-Sigma​ ​Modulators​ ​for​ ​the​ ​CMOS​ ​Qubit​ ​Controller")​. 

• [2025.05] Our joint research work with Prof. Lee at Hanbat National University has been accepted to the Electronics (IF=2.6) ("A Triple-Band Doherty Amplifier for Mobile Applications"). [Link]

• [2025.05] Muhammad Fakhri Maludin (Ph.D. candidate)'s paper, "Wide Range and Tunable Pulse Generator in CMOS 45nm Technology for Pulse Radar Array", has been accepted to the IEEE Transactions on Instruments and Measurements (TIM, IF=5.6). Congrats to Fakhri!  [Link] 

• [2025.05] Muhammad Fakhri Maludin (Ph.D. candidate)'s patent, "다중위상 지연고정루프와 고정밀 NOR 게이트 기반 펄스생성기 및 펄스생성방법", is granted (KR-10-2812353). Congrats to Fakhri! 

• [2025.04] Seunghyun Baek (undergraduate researcher)'s paper on low-power mixer for superconducting qubit has been accepted to the IEIE J. Semiconductor Technology and Science (JSTS) . Congrats to Baek! [Link]  

• [2025.03] Hapsah Aulya Azzahra (M.S. graduate)'s paper, "15.4–17 GHz–, 187.4 dBc/Hz FoM VCO With Current Reused Coupled Oscillator and Improved Noise Circulation", has been accepted to the IEEE Transactions on Circuits and Systems - I (TCAS-I, IF=5.2). Congrats to Hapsah!  [Link]  

• [2025.03] Our lab has moved to Ewha Womans University (EWHA) [Link]

NOTICES

• Openings: We are currently seeking self-motivated researchers at the level of Post-doctoral / Doctoral / Master degree. Interested candidates should send their CV and/or portfolio to  jusungkim@ewha.ac.kr.

• Introduction material (presentation) for SPARC Lab. (last update: 2025 May) [Link]