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A Modified Canonical Piecewise-Linear Function-Based Behavioral Model for Wideband Power Amplifiers

机译:改进的基于典范分段线性函数的宽带功率放大器行为模型

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摘要

A modified canonical piecewise-linear function (CPWL)-based model is proposed for characterizing wideband power amplifiers. The model has a similar structure of the decomposed vector rotation (DVR) model but without DVR operations, in which the first-order basis function can be replaced by a second-order function by analysis. The model has lower complexity than the DVR model and the model parameter scan be estimated by least-square method. Experimental results show that the proposed model nearly gives the same normalized mean square error performance as the DVR model when a wideband Doherty power amplifier is excited by a 5-carrier long-term evolution advanced (LTE-A) signal of 100 MHz bandwidth.
机译:提出了一种基于修正的典型分段线性函数(CPWL)的模型,用于表征宽带功率放大器。该模型具有与分解矢量旋转(DVR)模型相似的结构,但没有DVR操作,通过分析,一阶基函数可以由二阶函数代替。该模型比DVR模型具有更低的复杂度,并且通过最小二乘法估计模型参数。实验结果表明,当宽带Doherty功率放大器被100 MHz带宽的5载波长期演进高级(LTE-A)信号激励时,该模型几乎具有与DVR模型相同的归一化均方误差性能。

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