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)