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Yongwoo Jo
School of Electrical  Engineering, KAIST
Ph.D., 2020 - Present

Contact Information
Email : yongwoo.jo@kaist.ac.kr
Education
Mar. 2018 - 2020
M.S. in Electrical and Computer Engineering
Ulsan National Institute of Science and Technology.
Mar. 2014 - Feb. 2018
B.S. in Electrical and Computer Engineering
Ulsan National Institute of Science and Technology.
 
 
 
International Conferences
Y. Shin=, J. Lee=, J. Kim=, Y. Jo, and J. Choi*, "A 76fsrms-Jitter and −65dBc-Fractional-Spur Fractional-N Sampling PLL Using a Nonlinearity-Replication Technique," IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2024. (= Equally-Credited Authors) (accepted for presentation)
Y. Jo, J. Kim, Y. Shin, H. Park, C. Hwang, Y. Lim, and J. Choi*, "A Wideband LO Generator for 5G FR1 Bands Using a Single LC-VCO-Based Subsampling PLL and a Ring-VCO-Based Fractional-Resolution Frequency Multiplier," IEEE J. Solid-State Circuits (JSSC), Early Access.
J. Kim, Y. Jo, T. Seong, H. Park, Y. Lim*, J. Choi*, "A 12.8–15.0-GHz Low-Jitter Fractional-N Subsampling PLL Using a Voltage-Domain Quantization-Error Cancellation," IEEE J. Solid-State Circuits (JSSC), Early Access.
Y. Jo=, J. Kim=, Y. Shin, C. Hwang, H. Park, and J. Choi*, "A 135fsrms-Jitter 0.6−7.7GHz LO Generator Using a Single LC-VCO-Based Subsampling PLL and a Ring-Oscillator-Based Sub-Integer-N Frequency Multiplier", IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2023. (= Equally-Credited Authors)
Y. Shin=, Y. Jo=, J. Kim, J. Lee, J. Kim, and J. Choi*, "A 900μW, 1–4GHz Input-Jitter-Filtering Digital-PLL-Based 25%-Duty-Cycle Quadrature-Clock Generator for Ultra-Low-Power Clock Distribution in High-Speed DRAM Interfaces", IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2023. (= Equally-Credited Authors)
J. Kim=, Y. Jo=, Y. Lim=, T. Seong, H. Park, S. Yoo, Y. Lee, S. Choi, J. Choi*, "A 104fsRMS-Jitter and −61dBc-Fractional Spur 15GHz Fractional-N Subsampling PLL Using a Voltage-Domain Quantization-Error Cancellation Technique," IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2021. (= Equally-Credited Authors)
Y. Lim=, J. Kim=, Y. Jo, J. Bang, S. Yoo, H. Park, H. Yoon and J. Choi*, "A 170MHz-Lock-In-Range and -253dB-FOMJIT, 12-14.5GHz Subsampling PLL with ...," IEEE International Solid-State Circuits Conference (ISSCC), accepted for presentation, Feb. 2020. (= Equally-Credited Authors)
S. Choi, S. Yoo, Y. Lee, Y. Jo, J. Lee, Y. Lim, and J. Choi, "153 fsRMS-Integrated-Jitter and 114-Multiplication Factor PVT-Robust 22.8 GHz Ring-LC-Hybrid Injection-Locked Clock Multiplier," IEEE Symposium on VLSI Circuits Dig., Jun. 2018, accepted for presentation
 
Journals

Y. Shin, Y. Jo, J. Kim, J. Lee, J. Kim, and J. Choi*, "A Digital-PLL-Based Quadrature Clock Generator for a Low-Power and Jitter-Filtering-Capable Clock Distribution Scheme in High-Speed DRAM Interfaces," IEEE J. Solid-State Circuits (JSSC), accepted for publication.

J. Kim, Y. Jo, T. Seong, H. Park, Y. Lim*, J. Choi*, "A 12.8–15.0-GHz Low-Jitter Fractional-N Subsampling PLL Using a Voltage-Domain Quantization-Error Cancellation," IEEE J. Solid-State Circuits (JSSC), Early Access.

Y. Lim, J. Kim, Y. Jo, J. Bang, and J. Choi*, "A Wide-Lock-In-Range and Low-Jitter 12–14.5 GHz SSPLL Using a Low-Power Frequency-Disturbance-Detecting and Correcting Loop," IEEE Journal of Solid-State Circuits, Oct. 2021

S. Choi, S. Yoo, Y. Lee, Y. Jo, J. Lee, Y. Lim, and J. Choi*, "An Ultra-Low-Jitter 22.8-GHz Ring-LC-Hybrid Injection-Locked Clock Multiplier with a Multiplication Factor of 114," IEEE Journal of Solid-State Circuits, Apr. 2018, invited from IEEE 2018 Symp. VLSI Circuits.

 
Y. Lim, J. Lee, S. Park, Y. Jo, and J. Choi*, "An External Capacitorless Low-Dropout Regulator with High PSR at All Frequencies from 10 kHz to 1 GHz Using an Adaptive Supply-Ripple Cancellation Technique," IEEE Journal of Solid-State Circuits, Sep. 2018
 
Awards & Honors
25th Korea Semiconductor Design Competition, Corporate Special Award, Oct. 2024.
30th Samsung Humantech Paper Award, Silver Award in Circuit Design, Feb. 2024.
24th Korea Semiconductor Design Competition, Minister Award, Nov. 2023.
2023 ISE Summer Annual Conference, Excellent Paper Award, Jul. 2023.
2023 IDEC Congress Chip Design Contest, Excellent Design Award, Jul. 2023.
22nd Korea Semiconductor Design Competition, Industry Special Award (Cadence Korea), Oct. 2021
21st Korea Semiconductor Design Competition, Industry Special Award (Silicon Works), Oct. 2020
19th Korea Semiconductor Design Competition, President of Semiconductor Association's Award, Oct. 2018
 
13th ASML Korea Semiconductor Scholarship, Oct. 2018
Academic Activities
Invited talk @ Samsung Semiconductor, San Jose, CA, USA, Hosted by Dr. Wanghua Wu, Feb. 2023
Patent
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