⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种用于幅度调制器的放大器，实现了105dB增益、500MHz带宽和0.1Ω输出阻抗，解决了混合开关幅度调制器中线性放大器带宽和输出阻抗的瓶颈问题。
modulation, where a constant-amplitude phase signal is amplified by an efficient switched-mode power amplifier (PA) and an envelope signal is modulated at the drain of the PA, has been proven to improve efficiency and linearity of the PA system. However, the amplitude modulator (AM) used in such modulation systems must have wide bandwidth, low switching ripple and high efficiency. Although several AM structures have been reported the hybrid switching amplitude modulator (HSAM) shows excellent performance [1-3]. The HSAM consists of a linear amplifier as a voltage source and a switching amplifier as a dependant current source. The linear amplifier using voltage feedback defines output voltage with high frequency information in a bandwidth-expanded envelope signal and the switching amplifier using current feedback dri
Chul Kim1,2, Chang-seok Chae1, Young-sub Yuk1, Yi-Gyeong Kim3,
Jong-Kee Kwon3, Gyu-Hyeong Cho1 1 KAIST, Daejeon, Korea Hynix Semiconductor, Gyeonggi, Korea 3 Electronics and Telecommunications Research Institute, Daejeon, Korea 2 Polar