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Quadrature SwitchedFloated Capacitor Power Amplifier With Reconfigurable Self-Coup
提出一种具有深度回退效率增强的正交开关/浮动电容功率放大器（SFCPA），通过可重构自耦合消除变压器（RSCCT）实现阻抗提升。
30.3-dBm饱和输出功率，36.6%/32.9%/29.1%/23.7%/18.6%/13.2%系统效率（SE），-31.9 dB EVM（256-QAM），-35.9 dB EVM（1024-QAM）
功率放大器深度回退效率正交开关浮动电容可重构自耦合
▸正交开关/浮动电容功率放大器（SFCPA）
▸可重构自耦合消除变压器（RSCCT）
▸IQ单元共享的瓦特级正交数字功率放大器（DPA）
Abstract
This article presents a quadrature switched/floated
capacitor power amplifier (SFCPA) with deep back-off effi-
ciency enhancement. The SFCPA is introduced to decrease
the dynamic power consumption at power back-off (PBO),
which could improve the system efficiency (SE). The recon-
figurable self-coupling canceling transformer (RSCCT) with
enhanced tuning range of turn ratio is used to achieve
impedance boosting for further improved efficiency at deep PBO.
Based on the proposed SFCPA, a watt-level quadr