A novel two‐dimensional crest factor reduction (2D‐CFR) is proposed to improve the dual‐band concurrent performance of power amplifiers (PAs). The concurrent performance of target PA can be improved significantly when the power for peak detection conforms to the concurrent characteristic. Peak detection and clipping operation are presented based on concurrent output capacity of PAs, which can be efficiently described by introducing two design parameters. Measured results show that the drain efficiency is improved from 34.2% to 36.6% with the proposed 2D‐CFR when compared with the conventional 2D‐CFR while maintaining similar error vector magnitude and ACPRs, which indicates a significant performance improvement.

中文翻译：

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基于功率放大器并发输出容量的二维波峰因数降低方法

提出了一种新颖的二维波峰因数降低（2D-CFR），以提高功率放大器（PA）的双频并发性能。当峰值检测功率符合并发特征时，可以显着提高目标PA的并发性能。基于PA的并发输出容量，提出了峰值检测和限幅操作，可以通过引入两个设计参数来有效地描述峰值检测和限幅操作。测量结果表明，与传统的2D-CFR相比，建议的2D-CFR的漏极效率从34.2％提高到36.6％，同时保持了相似的误差矢量幅度和ACPR，这表明性能有了显着提高。