9.8 A 50W 98%-Efficiency High-Power Wireless-Charging System with an Acoustic Noise-Reduced Ask Modulation Technique and Internal Hybrid Voltage-/Current-Mode ASK Demodulation. - Seongjin Oh; Hansol Kim; Hyunsu Kim; Gyeongho Namgoong; Woojin Park; Sangbeom Heo; Jaekyu Kim; Sungwoo Moon; Hyoung-Seok Oh; Hwayeal Yu (ISSCC, 2025)