首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Fast, simultaneous optimization of power amplifier input power and load impedance for power-added efficiency and adjacent-channel power ratio using the power smith tube
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Fast, simultaneous optimization of power amplifier input power and load impedance for power-added efficiency and adjacent-channel power ratio using the power smith tube

机译:使用功率史密斯管快速,同时优化功率放大器的输入功率和负载阻抗,以提高功率效率和邻道功率比

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摘要

Reconfigurable adaptive amplifiers are expected to be a critical component of future adaptive and cognitive radar transmitters. This paper details an algorithm to simultaneously optimize input power and load reflection coefficient of a power amplifier device to obtain the largest power-added efficiency (PAE) possible under a predefined constraint on adjacent-channel power ratio (ACPR). The vector-based search relies on estimation of the PAE and ACPR gradients in the three-dimensional power Smith tube. Accurate convergence to the optimum impedance in the Smith chart is demonstrated in simulation and measurement search experiments requiring between 20 and 60 experimental queries. This paper presents a fast search to jointly optimize the input power level and load impedance. This method is feasible for future implementation in real-time reconfigurable power amplifiers.
机译:可重构自适应放大器有望成为未来自适应和认知雷达发射机的关键组成部分。本文详细介绍了一种算法,该算法可同时优化功率放大器设备的输入功率和负载反射系数,以在预定义的相邻信道功率比(ACPR)约束下获得最大的功率附加效率(PAE)。基于矢量的搜索依赖于三维功率史密斯管中PAE和ACPR梯度的估计。在需要20到60个实验查询的仿真和测量搜索实验中,证明了Smith图表中到最佳阻抗的准确收敛。本文提出了一种快速搜索,以共同优化输入功率水平和负载阻抗。这种方法对于将来在实时可重配置功率放大器中的实现是可行的。

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