Publications

2026

A Sampling PLL with Boosted Phase Detection Gain Achieving 52 fs RMS Jitter and 110.4 MHz Lock-in Range

IEEE Solid-State Circuits Letters (SSC-L), Accepted for publication

H. An, C. An, S. Kim, and H. Yoon*

A Neuromorphic Image Sensor with In-Sensor Spiking Neural Network Computing

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS, Accepted for publication

J. Hwang, J. Kim, J. Kang, K. Hong, H. Yoon, and S. Kim*

A Framework of Automated LC-VCO Design with Physical Layout Based on Reinforcement Learning

IEEE Computer-Aided Design of Integrated Circuits and Systems (TCAD), Accepted for publication

S. Kim, H. Lee, S. Hong, H. Yoon*, and T. Song*

A Low-Reference-Spur Injection-Locked Clock Multiplier Using Sub-Sampling Frequency Tracking Loop and Injection Pulse Timing Calibrator

IEEE Journal of Solid-State Circuits (JSSC), Accepted for publication

H. Nam, H. An, C. An, S. Kim, and H. Yoon*

A Dual-Slope Sampling PLL with Boosted Phase Detection Gain and Wide Lock-in Range Achieving 52 Fs RMS Jitter

IEEE International Solid-State Circuits Conference (ISSCC) SRP session

H. An, C. An, S. Kim, and H. Yoon*

A −53.7 dB PSRR, Fast-Transient Output-Capacitor-less Digital-Assisted Analog LDO Using Seamless Digital-to-Analog Transfer Technique

IEEE Journal of Solid-State Circuits (JSSC), Accepted for publication

C. An, H. An, H. Nam, and H. Yoon*

A Multibit ReRAM Computing-in-Memory Processor with Adaptive Decision Level Nonlinear ADC for Ultra-low-energy Keyword Spotting in Mobile Devices

IEEE Transactions on Circuits and Systems I: Regular Papers (TCAS-I), Accepted for publication

D. Kim, H. Jeong, S. Kim, H. Yoon*, and K. J. Lee*

2025

An area-efficient, DTC-Less fractional-N Sampling PLL Achieving 140 fs RMS Jitter and −66.3 dBc Fractional Spur

IEEE Asian Solid-State Circuits Conference, Nov. 2025

H. An, H. Nam, C. An, and H. Yoon*

A Mixture-Gas Multisensor Interface with On-chip Classification and On-Edge Regression

IEEE Sensors Journal, vol. 25, no. 16, pp. 31435-31446, 15 Aug. 2025

Y. Kim, J. Cho, Y. Pyeon, H. Kim, S. Lee, J. Kwak, H. Yoon, Y. Lee, and J. Kim

A 6.2b-ENOB 2.5GS/s Flash-and-VCO Based Subranging ADC Using a Residue Shifting Technique

IEEE Solid-State Circuits Letters (SSC-L),  vol. 8, pp. 177-180, 2025

S. Kim=, J. Lee=, Y. Cho, J. Kim, J. Choi*, and H. Yoon* (=Equal-Credited Author)

A Low-Jitter and Wide-Frequency-Range D-Band Frequency Synthesizer with a Subsampling PLL and a Harmonic Boosting Frequency Multiplier

IEEE Journal of Solid-State Circuits (JSSC), vol.60, no. 5, pp. 1632-1643, May 2025.

S. Jung, J. Kim, J. Bang, S. Lee, H. Yoon*, and J. Choi*

An Area-Efficient CMOS Cross-Coupled LC-VCO Using Nested Intertwined Tail Inductors

IEEE Transactions on Circuits and Systems II: Express Briefs (TCAS-II), vol. 72, no. 1, pp. 143-147, Jan. 2025

H. An, H. Nam, S. Kim, Y. Lim, and H. Yoon*

2021

An 82fsRMS-Jitter and 22.5mW-Power, 102GHz W-Band PLL Using a Power-Gating Injection-Locked Frequency Multiplier-Based Phase Detector in 65nm CMOS

IEEE International Solid-State Circuit Conference (ISSCC), Feb. 2021

S. Yoo=, S. Park=, S. Choi=, Y. Cho, H. Yoon, C. Hwang, and J. Choi (=Equal-Credited Author)

2020

A 170MHz-Lock-In-Range and -253dB-FOMJIT, 12-14.5GHz Subsampling PLL with 150µW Frequency-Disturbance-Correcting Loop Using a Low-Power Unevenly Spaced Edge Generator

IEEE International Solid-State Circuit Conference (ISSCC), Feb. 2020

Y. Lim=, J. Kim=, Y. Jo, J. Bang, S. Yoo, H. Park, H. Yoon, and J. Choi (=Equal-Credited Author)

2019

An Ultra-Low-Jitter, mmW-Band Frequency Synthesizer Based on Digital Subsampling PLL Using Optimally-Spaced Voltage Comparators

IEEE Journal of Solid-State Circuits (JSSC), vol.54, no. 12, pp. 3466-3477, Dec. 2019.

J. Kim, Y. Lim, H. Yoon, Y. Lee, Y. Cho, T. Seong, and J. Choi

A Low-Jitter Injection-Locked Multi-Frequency Generator Using Digitally-Controlled Oscillators and Time-Interleaved Calibration

IEEE Journal of Solid-State Circuits (JSSC), vol.54, no. 6, pp. 1564-1574, Jun. 2019.

H. Yoon, S. Park, and J. Choi

A 76fsrms Jitter and −40dBc Integrated-Phase-Noise 28-to-31GHz Frequency Synthesizer Based on Digital Sub-Sampling PLL Using Optimally Spaced Voltage Comparators and Background Loop-Gain Optimization

IEEE International Solid-State Circuit Conference (ISSCC), Feb. 2019

J. Kim=, H. Yoon=, Y. Lim*, Y. Lee, Y. Cho, T. Seong, and J. Choi (=Equal-Credited Author)

2018

Fractional-N Frequency Synthesizer Supporting Multiple Frequency Bands for Backward-Compatible 5G Using a Frequency Doubler and Injection-Locked Frequency Multipliers

IEEE International Solid-State Circuit Conference (ISSCC), Feb. 2018

H. Yoon, J. Kim, S. Park, Y. Lim, Y. Lee, J. Bang, K. Lim, and J. Choi

A Low-Integrated-Phase-Noise 27-30-GHz Injection-Locked Frequency Multiplier With an Ultra-Low-Power Frequency-Tracking Loop for mm-Wave-Band 5G Transceivers

IEEE Journal of Solid-State Circuits (JSSC), vol.53, no. 2, pp. 375-388, Feb. 2018.

S. Yoo, S. Choi, J. Kim, H. Yoon, Y. Lee and J. Choi

Injection-locked frequency multiplier with a continuous frequency-tracking loop for 5G transceivers

IEEE Asia and South Pacific Design Automation Conference (ASP-DAC), 2018

S Yoo, S. Choi, J. Kim, H. Yoon, Y. Lee and J. Choi

2017

An Ultra-Low Phase Noise All-Digital Multi-Frequency Generator Using Injection-Locked DCOs and Time-Interleaved Calibration

IEEE Asian Solid-State Circuits (ASSCC), Nov. 2017

S. Park, H. Yoon, and J. Choi

A PVT-Robust 29GHz Injection-Locked Frequency Multiplier with a 600μW Frequency-Tracking Loop for mm-Band 5G Transceivers

IEEE International Solid-State Circuit Conference (ISSCC), Feb. 2017

S. Yoo, S. Choi, J. Kim, H. Yoon, Y. Lee, and J. Choi

2016

A PVT-Robust Low Reference Spur Injection-Locked Clock Multiplier Using a Voltage-Domain Period-Calibrating Loop

 IEEE VLSI Symposium, Jun. 2016

Y. Lee, H. Yoon, M. Kim, and J. Choi

A 0.56 – 2.92 GHz Wideband and Low Phase Noise Quadrature LO-Generator Using a Single LC-VCO for 2 – 4G Multi-Standard Cellular Transceivers

IEEE Journal of Solid-State Circuits (JSSC), vol.51, no. 3, pp. 614-625, Mar. 2016

H. Yoon, Y. Lee, Y. Lim, G. Tak, H. Kim, Y. Ho, and J. Choi

2014

A Wideband Dual-Mode LC-VCO With a Switchable Gate-Biased Active Core

IEEE Transactions on Circuits and Systems II: Express Briefs (TCAS-II), vol. 61, no. 5, pp. 289-293, May 2014

H. Yoon, Y. Lee, and J. Choi