前馈功放线性化技术的研究

Research on the Linearization Technique of Feed-Forward Power Amplifier

将前馈功放线性化的过补偿方法与传统方法相比,过补偿前馈方法不但缩小了电路的尺寸,降低了成本, 而且提高了整个功放系统的效率,是一种较具吸引力的方法。仿真结果表明,它对三阶交调失真的抑制也比传统方法提 高9dB以上。

A overcompensated feedforward approach and a conventional feedforward approach to power amplifier linearization is investigated contrastively;The overcompensated feedforward approach is attractive because it can not only help to save size and cost,but also improve the efficiency of power amplifier system;The suppression of third intermodulation are 9dB more than conventional approach.