⚡ 本页包含 AI 生成的分析内容，仅供参考
本文提出了一种名为“时空波束赋形功率放大器”的直接数字幅度和相位波束赋形功率放大器，用于解决毫米波发射机在传输高峰均比信号时回退效率低以及传统移相器效率低、体积大的问题。该设计通过时空联合处理将波束赋形和功率回退优化结合，提升了24GHz相控阵系统的性能。
mm-Wave transmitters face challenges such as degraded back-off efficiency and the use of low-efficiency and bulky phase shifters when transmitting high-order constellations with a typical peak-to-average power ratio (PAPR) of 7 to 9.5dB for 5G systems and beyond. Traditional methods address beamforming and power back-off (PBO) separately, with baseband beamforming leading to high system complexity and RF beamforming experiencing significant mismatch and insertion loss. We propose a direct-digital amplitudeand-phase-beamforming power amplifier, known as the Spatial-Temporal Beamforming Power Amplifier (ST-BPA), which integrates both phase shifting and power back-off operation. This approach can be combined with techniques such as Doherty, envelope
Yutian Zhao1, Yiyang Song1, Weiyan Gu1, Shiyuan Yu1, Zhehao Yu2, Yuxiang Han1,
Xinen Zhu3, Xuyang Lu1 Shanghai Jiao Tong University, Shanghai, China University of Pennsylvania, Philadelphia, PA 3 SGR Semiconductors, Shanghai, China 1 2