54 GHz CMOS LNAs with 3.6 dB NF and 28.2 dB gain using transformer feedback Gm-boosting technique. - Shita Guo; Tianzuo Xi; Ping Gui; Jing Zhang; Wooyeol Choi 001; Kenneth K. O; Yanli Fan; Daquan Huang; Richard Gu; Mark Morgan (A-SSCC, 2014)

85-to-127 GHz CMOS transmitter for rotational spectroscopy. - Navneet Sharma; Jing Zhang; Qian Zhong; Wooyeol Choi 001; James P. McMillan; Christopher F. Neese; Frank C. De Lucia; Kenneth K. O (CICC, 2014)

High-Efficiency Power Amplifier Using an Active Second-Harmonic Injection Technique Under Optimized Third-Harmonic Termination. - Mincheol Seo; Hwiseob Lee; Jehyeon Gu; Hyungchul Kim; Junghyun Ham; Wooyeol Choi 001; Yanghun Yun; Kenneth K. O; Youngoo Yang (IEEE Trans. Circuits Syst. II Express Briefs, 2014)

410-GHz CMOS imager using a 4th sub-harmonic mixer with effective NEP of 0.3 fW/Hz0.5 at 1-kHz noise bandwidth. - Wooyeol Choi 001; Zeshan Ahmad; Amit Jha; Ja-Yol Lee; Insoo Kim; Kenneth K. O (VLSIC, 2015)

85-to-127 GHz CMOS Signal Generation Using a Quadrature VCO With Passive Coupling and Broadband Harmonic Combining for Rotational Spectroscopy. - Jing Zhang; Navneet Sharma; Wooyeol Choi 001; Dongha Shim; Qian Zhong; Kenneth K. O (IEEE J. Solid State Circuits, 2015)

25.2 A 210-to-305GHz CMOS receiver for rotational spectroscopy. - Qian Zhong; Wooyeol Choi 001; Christopher Miller 005; Rashaunda Henderson; Kenneth K. O (ISSCC, 2016)

CMOS terahertz receivers. - Qian Zhong; Wooyeol Choi 001; Dae Yeon Kim; Zeshan Ahmad; Rui Xu 008; Yaming Zhang; Ruonan Han 001; Sandeep Kshattry; Navneet Sharma; Z.-Y. Chen; Dongha Shim; Swaminathan Sankaran; et al. (CICC, 2018)

300-GHz CMOS QPSK transmitter for 30-Gbps dielectric waveguide communication. - Qian Zhong; Zhiyu Chen; Navneet Sharma; Sandeep Kshattry; Wooyeol Choi 001; Kenneth K. O (CICC, 2018)

Terahertz RF Front-End Employing Even-Order Subharmonic MOS Symmetric Varactor Mixers in 65-NM CMOS for Hydration Measurements at 560 GHz. - Qian Zhong; Wooyeol Choi 001; Kenneth K. O (VLSI Circuits, 2018)

426-GHz Imaging Pixel Integrating a Transmitter and a Coherent Receiver with an Area of 380×47μm2 in 65-nm CMOS. - Yukun Zhu; Pranith R. Byreddy; Kenneth K. O; Wooyeol Choi 001 (VLSI Circuits, 2019)

Opening Terahertz for Everyday Applications. - Kenneth K. O; Wooyeol Choi 001; Qian Zhong; Navneet Sharma; Yaming Zhang; Ruonan Han 001; Zeshan Ahmad; Dae Yeon Kim; Sandeep Kshattry; Ivan R. Medvedev; David John Lary; Hyun-Joo Nam; et al. (IEEE Commun. Mag., 2019)

287-GHz CMOS Transceiver Pixel Array in a QFN Package for Active Imaging. - Pranith R. Byreddy; Yukun Zhu; Harshpreet S. Bakshi; Kenneth K. O; Wooyeol Choi 001 (A-SSCC, 2020)

A Wideband 180-GHz Phase-Lacked-Loop Based MSK Receiver. - Shenggang Dong; Ibukunoluwa Momson; Sandeep Kshattry; Pavan Yelleswarapu; Wooyeol Choi 001; Kenneth K. O (CICC, 2020)

315-GHz Self-Synchronizing Minimum Shift Keying Receiver in 65-nm CMOS. - Ibukunoluwa Momson; Shenggang Dong; Pavan Yelleswarapu; Wooyeol Choi 001; Kenneth K. O (VLSI Circuits, 2020)

270-to-300GHz Double-Balanced Parametric Upconverter Using Asymmetric MOS Varactors and a Power-Splitting- Transformer Hybrid in 65nm CMOS. - Zhiyu Chen; Wooyeol Choi 001; Kenneth K. O (ISSCC, 2021)

A 10-Gb/s 180-GHz Phase-Locked-Loop Minimum Shift Keying Receiver. - Shenggang Dong; Ibukunoluwa Momson; Sandeep Kshattry; Pavan Yelleswarapu; Wooyeol Choi 001; Kenneth K. O (IEEE J. Solid State Circuits, 2021)

Terahertz Even-Order Subharmonic Mixer Using Symmetric MOS Varactors. - Qian Zhong; Wooyeol Choi 001; Kenneth K. O (IEEE J. Solid State Circuits, 2021)

Propeller Effects on mmWave UAV Channels: A Statistical and Empirical Modeling Study. - Halil Said Cankurtaran; Amit Kachroo; Wooyeol Choi 001; John F. O'Hara; Serhan Yarkan; Khalid A. Qaraqe; Mazen Omar Hasna; Sabit Ekin (BlackSeaCom, 2022)

A 430GHz CMOS Concurrent Transceiver Pixel Array for High Angular Resolution Reflection-Mode Active Imaging. - Yukun Zhu; Pranith R. Byreddy; Shenggang Dong; Kenneth K. O; Wooyeol Choi 001 (ISSCC, 2022)

Towards a Hybrid RF/Optical Lunar Communication System (LunarComm). - Waseem Raza; Ethan Abele; John F. O'Hara; Behnaz Sadr; Peter G. LoPresti; Ali Imran 001; Wooyeol Choi 001; Ickhyun Song; Serhat Altunc; Obadiah Kegege; Sabit Ekin (CoRR, 2022)

300-GHz Double-Balanced Up-Converter Using Asymmetric MOS Varactors in 65-nm CMOS. - Zhiyu Chen; Wooyeol Choi 001; Kenneth K. O (IEEE J. Solid State Circuits, 2022)

Toward a Hybrid RF/Optical Lunar Communication System (LunarComm). - Waseem Raza; Ethan Abele; John F. O'Hara; Behnaz Sadr; Peter G. LoPresti; Ali Imran 001; Wooyeol Choi 001; Ickhyun Song; Serhat Altunc; Obadiah Kegege; Sabit Ekin (IEEE Netw., 2022)

10-GSymbols/s Supply Modulated 250-GHz SiGe HBT Transmitter RF Front-End with 6.8-dBm Peak Modulated Power. - Haidong Guo; Suprovo Ghosh; Frank Zhang; Suhwan Lee; Wooyeol Choi 001; Shenggang Dong; O. Kenneth (BCICTS, 2024)

Research Experiences for Teachers on Chip Design. - John Hu; James Stine; Wooyeol Choi 001; Erin Dyke (ISCAS, 2024)

380-GHz Third Harmonic Signal Generation Using Differentially Pumped Varactors in a CMOS Voltage Controlled Oscillator. - Zhe Chen 021; Hongcheng Dong; Zhiyu Chen; Wooyeol Choi 001; Jixin Chen; Kenneth K. O; Wei Hong 002 (IEEE Trans. Circuits Syst. I Regul. Pap., 2025)

10-GSymbols/s Supply-Modulated APSKC SiGe HBT Transmitter RF Front End for Operation at 250 GHz With 6.8-dBm Peak Modulated Power. - Haidong Guo; Suprovo Ghosh; Frank Zhang; Suhwan Lee; Wooyeol Choi 001; Shenggang Dong; Ibukunoluwa Momson; Karl Strecker; Kenneth K. O (IEEE J. Solid State Circuits, 2025)