Power Amplifier Linearization Using Cancellation-Based Feed Forward Methods and Systems,申请号US201213716564-传众专利搜索

Power Amplifier Linearization Using Cancellation-Based Feed Forward Methods and Systems

申请公布号：US2013106509(A1)

申请号：US201213716564

申请日期：2012.12.17

申请公布日期：2013.05.02

申请人：

CHEN WEI;HAHN WILHELM STEFFEN;INTERSIL AMERICAS INC.

发明人：CHEN WEI;HAHN WILHELM STEFFEN

分类号：H03F1/32

主分类号：H03F1/32

摘要：Linearizers can improve the linearity of power amplifiers by canceling or reducing amplitude of non-linearity components, (e.g., IM3, IM5, IM7, IM9, etc.) generated by the power amplifier. The linearizers can obtain samples of signals output by the power amplifier and process the samples to produce a canceling signal that is applied onto or into an output of the power amplifier. The canceling signal is generated such that when applied to the output of the power amplifier, the canceling signal cancels or reduces at least a portion of the non-linearity components produced by the power amplifier. A controller can improve the correction of the non-linearity components by executing one or more tuning algorithms and adjusting settings of the linearizer based on the results of the algorithm(s).