Young-Hwan Choo

11 papers Journal 3Unranked 8
YearRankTypeTitle / Venue / Authors
2024 — conf
31.3 A 950ns 0.5-to-5.5V 5G NR RF PA Supply Modulator with Floating Capacitor Control for Symbol Power Tracking.
ISSCC
Ik-hwan Kim, Jeong-Il Seo, Young-Hwan Choo, Seungchan Park, Jae-Yeol Han, WooSik Kim, Sung-Youb Jung, Taehyuk Ko, Dongsu Kim, Jongwoo Lee, Sungung Kwak
2023 — conf
5G NR RF PA Supply Modulator Supporting 179ns 0.5-to-5.5V Symbol Power Tracking and Envelope Tracking.
VLSI Technology and Circuits
Jun-Suk Bang, Dongsu Kim, Young-Hwan Choo, Ik-hwan Kim, Seungchan Park, Jeongkwang Lee, Sang-Han Lee, Young-Ho Jung, Jae-Young Ko, Sung-Youb Jung, Jae-Yeol Han, WooSik Kim, Ji-Seon Paek, Jongwoo Lee
2022 — conf
2-Tx Digital Envelope-Tracking Supply Modulator Achieving 200MHz Channel Bandwidth and 93.6% Efficiency for 2G/3G/LTE/NR RF Power Amplifiers.
ISSCC
Jun-Suk Bang, Dong-Su Kim, Jeongkwang Lee, Sung-Youb Jung, Young-Hwan Choo, Seungchan Park, Young-Ho Jung, Jae-Young Ko, Takahiro Norniyama, Jongbeom Baek, Jae-Yeol Han, Sang-Han Lee, Ik-hwan Kim, Ji-Seon Paek, Jongwoo Lee, Thomas Byunghak Cho
2022 — conf
A 1.23W/mm
ISSCC
Jeong-Hyun Cho, Dong-Kyu Kim, Hong-Hyun Bae, Yong-Jin Lee, Seok-Tae Koh, Young-Hwan Choo, Ji-Seon Paek, Hyun-Sik Kim
2022 J jnl
A Fully Integrated Multi-Phase Buck Converter With On-Chip Capacitor Dynamic Re-Allocation and Fine-Grained Phase-Shedding Techniques.
IEEE J. Solid State Circuits
Jeong-Hyun Cho, Dong-Kyu Kim, Hong-Hyun Bae, Yong-Jin Lee, Seok-Tae Koh, Young-Hwan Choo, Ji-Seon Paek, Hyun-Sik Kim
2022 J jnl
Efficient RF-PA Two-Chip Supply Modulator Architecture for 4G LTE and 5G NR Dual-Connectivity RF Front End.
IEEE J. Solid State Circuits
Ji-Seon Paek, Dong-Su Kim, Jae-Yeol Han, Young-Hwan Choo, Jun-Suk Bang, Seungchan Park, Jongbeom Baek, Takahiro Nomiyama, Ik-hwan Kim, Jongwoo Lee
2021 — conf
Efficient RF-PA Two-Chip Supply Modulator Architecture for 4G LTE and 5G NR Dual-Connectivity RF Front-End.
VLSI Circuits
Ji-Seon Paek, Dongsu Kim, Jae-Yeol Han, Young-Hwan Choo, Jongwoo Lee
2019 — conf
An 88%-Efficiency Supply Modulator Achieving 1.08μs/V Fast Transition and 100MHz Envelope-Tracking Bandwidth for 5G New Radio RF Power Amplifier.
ISSCC
Ji-Seon Paek, Dong-Su Kim, Jun-Suk Bang, Jongbeom Baek, Jeong-Hyun Choi, Takahiro Nomiyama, Jae-Yeol Han, Young-Hwan Choo, Yong-Sik Youn, Euiyoung Park, Sung-Jun Lee, Ik-hwan Kim, Jongwoo Lee, Thomas Byunghak Cho, Inyup Kang
2018 — conf
A 2TX supply modulator for envelope-tracking power amplifier supporting intra- and inter-band uplink carrier aggregation and power class-2 high-power user equipment.
ISSCC
Takahiro Nomiyama, Yong-Sik Youn, Young-Hwan Choo, Dong-Su Kim, Jae-Yeol Han, Jun-Hee Jung, Jongbeom Baek, Sung-Jun Lee, Euiyoung Park, Jeong-Hyun Choi, Ji-Seon Paek, Jongwoo Lee, Thomas Byunghak Cho, Inyup Kang
2016 — conf
20.7 An RF-PA supply modulator achieving 83% efficiency and -136dBm/Hz noise for LTE-40MHz and GSM 35dBm applications.
ISSCC
Ji-Seon Paek, Yong-Sik Youn, Jeong-Hyun Choi, Dong-Su Kim, Jun-Hee Jung, Young-Hwan Choo, Sung-Jun Lee, Seung-Chul Lee, Thomas Byunghak Cho, Inyup Kang
2016 J jnl
A - 137 dBm/Hz Noise, 82% Efficiency AC-Coupled Hybrid Supply Modulator With Integrated Buck-Boost Converter.
IEEE J. Solid State Circuits
Ji-Seon Paek, Seung-Chul Lee, Yong-Sik Youn, Dong-Su Kim, Jeong-Hyun Choi, Jun-Hee Jung, Young-Hwan Choo, Sung-Jun Lee, Jae-Yeol Han, Thomas Byunghak Cho