Younghwan Choo

20.7 An RF-PA supply modulator achieving 83% efficiency and −136dBm/Hz noise for LTE-40MHz and GSM 35dBm applications

Ji-Seon Paek, Yong-Sik Youn, Jeong-Hyun Choi et al. · 2016 · 35 citations

Engineering, Radio Frequency, Power Electronics Converter +16

15.1 An 88%-Efficiency Supply Modulator Achieving 1.08μs/V Fast Transition and 100MHz Envelope-Tracking Bandwidth for 5G New Radio RF Power Amplifier

Ji-Seon Paek, Dongsu Kim, Jun‐Suk Bang et al. · 2019 · 35 citations

Low-power Electronics, Envelope Tracking, Electrical Engineering +14

A − 137 dBm/Hz Noise, 82% Efficiency AC-Coupled Hybrid Supply Modulator With Integrated Buck-Boost Converter

Ji-Seon Paek, Seung‐Chul Lee, Yong-Sik Youn et al. · IEEE Journal of Solid-State Circuits · 2016 · 33 citations

Electrical Engineering, Dbm/hz Noise, Engineering +14

A Fully Integrated Multi-Phase Buck Converter With On-Chip Capacitor Dynamic Re-Allocation and Fine-Grained Phase-Shedding Techniques

Jeong‐Hyun Cho, Dong-Kyu Kim, Hong-Hyun Bae et al. · IEEE Journal of Solid-State Circuits · 2022 · 25 citations

Electrical Engineering, Engineering, Power Ic +10

Design of Boosted Supply Modulator With Reverse Current Protection for Wide Battery Range in Envelope Tracking Operation

Ji-Seon Paek, Dongsu Kim, Younghwan Choo et al. · IEEE Transactions on Microwave Theory and Techniques · 2018 · 22 citations

Reverse Current Protection, Envelope Tracking Operation, Electrical Engineering +7