A Technique of Memory Effects Reduction and Model Simplification for RF Power Amplifier

In this paper,a systematic methodology for characterizing a radio frequency power amplifier with minimized memory effects is investigated.A 10W peak power amplifier is designed and appropriately biased for memory effects reduction.The memory length of the designed power amplifier is estimated accurately by using the "false nearest neighbors" principles and experimentally verified.Based on the above techniques,the designed power amplifier can be characterized by a very simple model with high accuracy.Experimental results show that the normalized mean square error better than-48dB is achieved when a Hammerstein model with only 7 complex coefficients is adopted.