⚡ 本页包含 AI 生成的分析内容，仅供参考
本文提出了一种内在线性的宽带数字极性功率放大器（PA），通过非线性尺寸、过驱动电压控制和多相RF时钟技术，实现了AM-AM和AM-PM校正，解决了数字PA线性度与带宽的权衡问题。
Mohsen Hashemi1, Yiyu Shen1, Mohammadreza Mehrpoo1, Mustafa Acar2, René van Leuken1, Morteza S. Alavi1, Leonardus de Vreede1 Delft University of Technology, Delft, The Netherlands Ampleon, Nijmegen, The Netherlands 1 2 To fully benefit from the progress of CMOS technologies, it is desirable to completely digitize the TX, replacing its final stage with a digitally controlled PA (DPA). The DPA consists of arrays of small sub-PAs that are digitally controlled to modulate the output amplitude, thus operating as an RF-DAC [1-6]. DPAs are normally designed in a switched mode (Classes E/D/D-1, etc.) to achieve high efficiency while using high sampling rate to attenuate and push the spectral images to higher frequencies. However, they suffer from high nonlinearity in their AM-code-word (ACW) to AM and ACW-to-PM conversion. To correct for such nonlinearities, digital pre-distortion (DPD) of the input signal is often used [1-3],
Nonlinear Sizing, Overdrive-Voltage Control, and, Multiphase RF Clocking