Hyungmo Koo

12 papers Journal 12
YearRankTypeTitle / Venue / Authors
2023 J jnl
Broadband Virtual-Stub Doherty Power Amplifier Using Asymmetric Structure.
IEEE Access
Jaekyung Shin, Woojin Choi, Yifei Chen, Hyeongjin Jeon, Sooncheol Bae, Young Chan Choi, Hyunuk Kang, Hyungmo Koo, Young Yun Woo, Kang-Yoon Lee, Keum-Cheol Hwang, Youngoo Yang
2022 J jnl
Beamforming Algorithm Based on the Orthogonal Phase Bases With Trigonometric Estimation for Microwave Power Transfer Systems.
IEEE Access
Hyungmo Koo, Jaekyung Shin, Woojin Choi, Soohyun Bin, Hansik Oh, Hongjun Lim, Kang-Yoon Lee, Keum-Cheol Hwang, Youngoo Yang
2021 J jnl
2.4 GHz GaN HEMT Class-F Synchronous Rectifier Using an Independent Second Harmonic Tuning Circuit.
Sensors
Jongyun Na, Sang-Hwa Yi, Jaekyung Shin, Hyungmo Koo, Jongseok Bae, Keum-Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
2021 J jnl
5.8 GHz 4-Channel Beamforming Tx IC for Microwave Power Transfer.
IEEE Access
Jaekyung Shin, Jongseok Bae, Hyungmo Koo, Sooncheol Bae, Jongyun Na, Hansik Oh, Hyungjin Jeon, Hoseok Jung, Young Chan Choi, Seungmin Woo, Chan Mi Song, Keum-Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
2021 J jnl
Correction to "5.8 GHz 4-Channel Beamforming Tx IC for Microwave Power Transfer".
IEEE Access
Jaekyung Shin, Jongseok Bae, Hyungmo Koo, Sooncheol Bae, Jongyun Na, Hansik Oh, Hyungjin Jeon, Hoseok Jung, Young Chan Choi, Seungmin Woo, Chan Mi Song, Keum-Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
2021 J jnl
Dual-Mode Supply Modulator IC With an Adaptive Quiescent Current Controller for Its Linear Amplifier in LTE Mobile Power Amplifier.
IEEE Access
Hansik Oh, Jaekyung Shin, Woojin Choi, Yifei Chen, Hyeongjin Jeon, Young Chan Choi, Hyungmo Koo, Keum-Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
2021 J jnl
Mid-Range Wireless Power Transfer System for Various Types of Multiple Receivers Using Power Customized Resonator.
IEEE Access
Hansik Oh, Sungjae Oh, Hyungmo Koo, Woojin Choi, Jaekyung Shin, Keum-Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
2021 J jnl
Retroreflective Transceiver Array Using a Novel Calibration Method Based on Optimum Phase Searching.
IEEE Trans. Ind. Electron.
Hyungmo Koo, Jongseok Bae, Woojin Choi, Hansik Oh, Hongjun Lim, Jongmin Lee, Chan Mi Song, Kang-Yoon Lee, Keum-Cheol Hwang, Youngoo Yang
2020 J jnl
LUT-Based Focal Beamforming System Using 2-D Adaptive Sequential Searching Algorithm for Microwave Power Transfer.
IEEE Access
Jongseok Bae, Sang-Hwa Yi, Hyungmo Koo, Sungjae Oh, Hansik Oh, Woojin Choi, Jaekyung Shin, Chan Mi Song, Keum-Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
2019 J jnl
5.8 GHz High-Efficiency RF-DC Converter Based on Common-Ground Multiple-Stack Structure.
Sensors
Jongseok Bae, Sang-Hwa Yi, Woojin Choi, Hyungmo Koo, Keum-Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
2019 J jnl
High-Efficiency Stacked Power Amplifier IC With 23% Fractional Bandwidth for Average Power Tracking Application.
IEEE Access
Wooseok Lee, Kang-Yoon Lee, Youngoo Yang, Hyunuk Kang, Hwiseob Lee, Jongseok Bae, Sungjae Oh, Hansik Oh, Hyungmo Koo, Jangsup Yoon, Keum-Cheol Hwang
2019 J jnl
Octave Bandwidth Doherty Power Amplifier Using Multiple Resonance Circuit for the Peaking Amplifier.
IEEE Trans. Circuits Syst. I Regul. Pap.
Hyunuk Kang, Hwiseob Lee, Wooseok Lee, Hansik Oh, Wonseob Lim, Hyungmo Koo, Cheon-Seok Park, Keum-Cheol Hwang, Kang-Yoon Lee, Youngoo Yang