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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Bias Smith Tube Optimization of Drain Voltage and Load Reflection Coefficient to Maximize Power-Added Efficiency Under ACPR Constraints for Radar Power Amplifiers
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Bias Smith Tube Optimization of Drain Voltage and Load Reflection Coefficient to Maximize Power-Added Efficiency Under ACPR Constraints for Radar Power Amplifiers

机译：偏置史密斯管的漏极电压和负载反射系数优化，以在ACPR约束下最大化雷达功率放大器的功率附加效率

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摘要

Reconfigurable transmitter power amplifiers will be necessary in future cognitive radar systems to allow adjustment in operating frequency, spectral output, and other desired operating characteristics while maintaining performance. Circuit optimization algorithms for tuning the amplifier load impedance and bias voltage in real time should maximize power-added efficiency while limiting the adjacent-channel power ratio (ACPR) in order to obtain spectral compliance. This paper presents a fast vector-based three-dimensional optimization for simultaneous bias adjustment and impedance matching for these goals using the bias Smith tube as the optimization space. Simulation and measurement results are presented for this optimization algorithm, and correspondence between the results is examined for several different starting locations in the bias Smith tube. This algorithm will allow simultaneous optimization of bias voltage and load impedance in real time in order to meet changing requirements.
机译：在未来的认知雷达系统中，可重配置的发射机功率放大器将是必需的，以允许在保持性能的同时调整工作频率，频谱输出和其他所需的工作特性。用于实时调整放大器负载阻抗和偏置电压的电路优化算法应在限制相邻信道功率比（ACPR）的同时最大化功率附加效率，以获得频谱一致性。本文介绍了一种基于矢量的快速三维优化，同时使用偏置史密斯管作为优化空间，可以同时实现偏置调整和阻抗匹配。给出了针对该优化算法的仿真和测量结果，并针对偏置史密斯管中的几个不同起始位置检查了结果之间的对应关系。该算法将允许实时同时优化偏置电压和负载阻抗，以满足不断变化的要求。

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