Keum Cheol Hwang

A Design of a 92.4% Efficiency Triple Mode Control DC–DC Buck Converter With Low Power Retention Mode and Adaptive Zero Current Detector for IoT/Wearable Applications

Young‐Jun Park, Ju-Hyun Park, Hongjin Kim et al. · IEEE Transactions on Power Electronics · 2016 · 107 citations

Engineering, Computer Engineering, Electrical Engineering +15

Triple-Band Unidirectional Circularly Polarized Hexagonal Slot Antenna With Multiple L-Shaped Slits

Jong Gyun Baek, Keum Cheol Hwang · IEEE Transactions on Antennas and Propagation · 2013 · 91 citations

Engineering, Electrical Engineering, Antennas +16

Octave Bandwidth Doherty Power Amplifier Using Multiple Resonance Circuit for the Peaking Amplifier

Hyunuk Kang, Hwiseob Lee, Wooseok Lee et al. · IEEE Transactions on Circuits and Systems I Regular Papers · 2018 · 89 citations

Engineering, Electrical Engineering, Circuit Theory +16

Design of a High Efficiency DC–DC Buck Converter With Two-Step Digital PWM and Low Power Self-Tracking Zero Current Detector for IoT Applications

Sang-Yun Kim, Keum Cheol Hwang, Youngoo Yang et al. · IEEE Transactions on Power Electronics · 2017 · 79 citations

Engineering, Computer Engineering, Electrical Engineering +14

Circularly Polarized Spidron Fractal Dielectric Resonator Antenna

Amir Altaf, Youngoo Yang, Kang‐Yoon Lee et al. · IEEE Antennas and Wireless Propagation Letters · 2015 · 76 citations

Engineering, Electrical Engineering, Antennas +16