【摘要】 重点介绍了几种主要的功率放大器的自适应预失真技术,包括基带预失真、中频预失真及射频预失真技术,以及几种自适应预失真工作函数的产生方法,并利用多项式产生工作函数的方法对功率放大器进行预失真调整,使其线性度得到明显改善。更多还原

【Abstract】 In this paper, three major methods of adaptive predistortion linearization (base-band predistortion, IF predistortion and RF predistortion) are presented, along with three methods of producing work-functions .An adaptive predistortion lineariser using polynomial functions is simulated in ADS 2002. The result demonstrates that the linearity of the amplifier is improved explicitly.更多还原