所设计的射频2W线性功率放大器是基于负载线匹配原理，采用功率回退法技术。

The 2W linear RF Power Amplifier in this paper is designed in Feedback method, based on Loadline Theory.

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为此人们研究了许多功放的线性化方法如功率回退法、前馈法、负反馈法、LINC法和预失真法。

For this purpose, a lot of linearization methods have been investigated including back-off, feed-forward, feedback, LINC and pre-distortion.

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