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Behavioral Modeling of Power Amplifiers for Wireless Applications

机译:无线应用功率放大器的行为建模

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摘要

In this paper, an improved empirical behavioral model for radio-frequency power amplifiers (RF-PAs) is presented. The model was implemented in a commercial nonlinear microwave simulator. It belongs to the category of bandpass PA models, which exhibits memory effects due to the low frequency dependence of bias and temperature. Additionally, it facilitates accurate and efficient system level simulations of RF-PA large-signal behaviors such as self-bias, AM-AM, AM-PM, gain expansion effects, and intermodulation distortion (IMD) sweet-spots. The model was validated using measurement data obtained from a commercial CDMA PA at 1.88 GHz.
机译:本文提出了一种改进的射频功率放大器(RF-PA)的经验行为模型。该模型是在商用非线性微波模拟器中实现的。它属于带通PA模型的类别,由于偏置和温度的低频相关性,因此具有记忆效应。此外,它有助于对RF-PA大信号行为(如自偏置,AM-AM,AM-PM,增益扩展效应和互调失真(IMD)最佳点)进行准确,高效的系统级仿真。使用从1.88 GHz的商用CDMA PA获得的测量数据验证了该模型。

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