Transceiver Design Technology for Full Digital DS-UWB Applications. - Bong Hyuk Park; Seungsik Lee; Hui Dong Lee; Kyung-Ai Lee; Bon-Hyun Ku; Ji-Seon Paek; Songcheol Hong; Sangsung Choi (VTC Fall, 2006)

2.7 A hybrid supply modulator with 10dB ET operation dynamic range achieving a PAE of 42.6% at 27.0dBm PA output power. - Seung-Chul Lee; Ji-Seon Paek; Jun-Hee Jung; Yong-Sik Youn; Sung-Jun Lee; Min-Soo Cho; Jae-Jol Han; Jung-Hyun Choi; Yong-Whan Joo; Takahiro Nomiyama; Su-Ho Lee; Il-Young Sohn; et al. (ISSCC, 2015)

86.55% Peak efficiency envelope modulator for 1.5W 10MHz LTE PA without AC coupling capacitor. - Si-Duk Sung; Sung-Wan Hong; Jun-Suk Bang; Ji-Seon Paek; Seung-Chul Lee; Thomas Byunghak Cho; Gyu-Hyeong Cho (VLSIC, 2015)

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; Dong-Su Kim; Jun-Hee Jung; Young-Hwan Choo; Sung-Jun Lee; Seung-Chul Lee; Thomas Byunghak Cho; Inyup Kang (ISSCC, 2016)

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; Dong-Su Kim; Jeong-Hyun Choi; Jun-Hee Jung; Young-Hwan Choo; Sung-Jun Lee; Jae-Yeol Han; Thomas Byunghak Cho (IEEE J. Solid State Circuits, 2016)

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. - 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; et al. (ISSCC, 2018)

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; 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; et al. (ISSCC, 2019)

A 90ns/V Fast-Transition Symbol-Power-Tracking Buck Converter for 5G mm-Wave Phased-Array Transceiver. - Ji-Seon Paek; Takahiro Nomiyama; Jae-Yeol Han; Ik-Hwan Kim; Yumi Lee; Dongsu Kim; Euiyoung Park; Sung-Jun Lee; Jongwoo Lee; Thomas Byunghak Cho; Inyup Kang (ISSCC, 2019)

11.7 A Voltage-Tolerant Three-Level Buck-Boost DC-DC Converter with Continuous Transfer Current and Flying Capacitor Soft Charger Achieving 96.8% Power Efficiency and 0.87µs/V DVS Rate. - Jongbeom Baek; Takahiro Nomiyama; Seungchan Park; Young-Ho Jung; Dongsu Kim; Jae-Yeol Han; Jun-Suk Bang; Yumi Lee; Ik-Hwan Kim; Ji-Seon Paek; Jongwoo Lee; Thomas Byunghak Cho (ISSCC, 2020)

33.9 A Hybrid Switching Supply Modulator Achieving 130MHz Envelope-Tracking Bandwidth and 10W Output Power for 2G/3G/LTE/NR RF Power Amplifiers. - Dongsu Kim; Jun-Suk Bang; Jongbeom Baek; Seungchan Park; Young-Ho Jung; Jae-Yeol Han; Ik-Hwan Kim; Sung-Youb Jung; Takahiro Nomiyama; Ji-Seon Paek; Jongwoo Lee; Thomas Byunghak Cho (ISSCC, 2021)

Efficient RF-PA Two-Chip Supply Modulator Architecture for 4G LTE and 5G NR Dual-Connectivity RF Front-End. - Ji-Seon Paek; Dongsu Kim; Jae-Yeol Han; Young-Hwan Choo; Jongwoo Lee (VLSI Circuits, 2021)

A 5G New Radio SAW-less RF Transmitter with a 100MHz Envelope Tracking HPUE n77 Power Amplifier Module. - Ji-Seon Paek; Wan Kim; Seunghoon Kang; Jongwoo Lee; Seungchul Pyo; Yongki Cho; Daeseok Jang; Youngsik Hur (VLSI Circuits, 2021)

2-Tx Digital Envelope-Tracking Supply Modulator Achieving 200MHz Channel Bandwidth and 93.6% Efficiency for 2G/3G/LTE/NR RF Power Amplifiers. - 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; et al. (ISSCC, 2022)

A 1.23W/mm2 83.7%-Efficiency 400MHz 6-Phase Fully Integrated Buck Converter in 28nm CMOS with On-Chip Capacitor Dynamic Re-Allocation for Inter-Inductor Current Balancing and Fast DVS of 75mV/ns. - Jeong-Hyun Cho; Dong-Kyu Kim; Hong-Hyun Bae; Yong-Jin Lee; Seok-Tae Koh; Young-Hwan Choo; Ji-Seon Paek; Hyun-Sik Kim (ISSCC, 2022)

A 3nm GAAFET Analog Assisted Digital LDO with High Current Density for Dynamic Voltage Scaling Mobile Applications. - Seki Kim; Hyongmin Lee; Yongjin Lee; Dongha Lee 004; Byeongbae Lee; Jahoon Jin; Susie Kim; Miri Noh; Kwonwoo Kang; Sangho Kim; Takahiro Nomiyama; Ji-Seon Paek; et al. (VLSI Technology and Circuits, 2022)

Fully Integrated 2x2 MIMO Real Simultaneous Dual Band WiFi CMOS Power Amplifiers With a Single Inductor Multiple Output Supply Modulation Technique. - Ji-Seon Paek; Jeongkwang Lee; Wan Kim; Jun-Suk Bang; Jongwoo Lee (VLSI Technology and Circuits, 2022)

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; Yong-Jin Lee; Seok-Tae Koh; Young-Hwan Choo; Ji-Seon Paek; Hyun-Sik Kim (IEEE J. Solid State Circuits, 2022)

Efficient RF-PA Two-Chip Supply Modulator Architecture for 4G LTE and 5G NR Dual-Connectivity RF Front End. - 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 (IEEE J. Solid State Circuits, 2022)

A Fully Integrated IEEE 802.15.4/4z-Compliant 6.5-to-8GHz UWB System-on-Chip RF Transceiver Supporting Precision Positioning in a CMOS 28nm Process. - Wan Kim; Hyun-Gi Seok; Geunhaeng Lee; Sinyoung Kim; Jae-Keun Lee; Chanho Kim; Wonkang Kim; Wonjun Jung; Youngsea Cho; Seungyong Bae; Jongpil Cho; Hyeokju Na; et al. (ISSCC, 2023)

5G NR RF PA Supply Modulator Supporting 179ns 0.5-to-5.5V Symbol Power Tracking and Envelope Tracking. - 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; et al. (VLSI Technology and Circuits, 2023)

A Fully Integrated IEEE 802.15.4/4z-Compliant UWB System-on-Chip RF Transceiver Supporting Precision Positioning in a CMOS 28-nm Process. - Wan Kim; Hyun-Gi Seok; Geunhaeng Lee; Sinyoung Kim; Jae-Keun Lee; Chanho Kim; Wonkang Kim; Wonjun Jung; Youngsea Cho; Seungyong Bae; Jongpil Cho; Hyuokju Na; et al. (IEEE J. Solid State Circuits, 2023)