中文摘要：

为了更加准确地表征功放的记忆效应，提出了一种新的动态x参数功放模型。该模型是对动态x参数模型的一种改进，利用FF（feed—forward）模型技术提取出表征功放记忆效应的核函数，并将其用于代替x参数表达式中的非线性函数。x参数表达式中的静态部分仍采用PHD（polyharmonic distortion）模型的非线性函数，并将动态部分进行合理的简化。相比传统的动态戈参数建模方案，所提模型不仅仿真精度高，而且仿真速度快。经仿真测试NPT1004功放的数据，利用所提出的新的动态x参数模型对功放建模，结果证明了本模型仿真功放的ACPR（adjacentchannel powerratio）的误差减小了3dB，从而验证了该模型的可行性，对今后利用动态x参数对功放的建模具有参考价值。

英文摘要：

This paper presented a new dynamic X parameter amplifier model, in order to more accurately characterize the memory effects of the power amplifier. The model was an improvement on the dynamic X parameter model. It used FF model- ing techniques to extract the kernel function which was used to represent the memory effects of power amplifier, and replaced the nonlinear expressions in X parameter by the kernel function. The static part of X parameter expressions still used PHD model, and the dynamic part was simplified reasonably. Compared to traditional dynamic X parametric modeling program, the proposed model achieves not only high simulation accuracy, but also fast simulation speed. This paper used the new dynamic X parameter model presented to build model for power amplifier, and simulated and tested NPT1004 power amplifier data. The result shows that this model amplifier ACPR error is reduced 3 dB. It verifies the feasibility of the program, and the dynamic X parameter amplifier model has important reference value on modeling for power amplifier.