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Comparison of Technologies for APT and ET Applications

机译:APT和ET应用技术的比较

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Average power tracking (APT) and envelope tracking (ET) power amplifiers require high efficiency across a range of supply voltages. The performance of these amplifiers is usually characterized by a so-called "waterfall curve" [1-3]. While circuit design choices can certainly be a factor in this roll-off of PAE with decreasing supply voltage, it is also necessary to evaluate device technologies to understand the trade-offs and opportunities they present for these applications. For technology development, it is advantageous to see if "simpler" measurements, such as RF-Knee[4] correlate to these waterfall measurements since they are easier to collect. We demonstrate the correlation of simpler measurements to the waterfall measurements and also compare the performance of different HBT material designs and other technologies.
机译:平均功率跟踪(APT)和包络跟踪(ET)功率放大器要求在一定范围的电源电压下具有高效率。这些放大器的性能通常以所谓的“瀑布曲线” [1-3]为特征。虽然电路设计的选择当然可以是电源电压降低而导致PAE下降的一个因素,但也有必要评估器件技术,以了解它们在这些应用中的权衡和机会。对于技术开发,有利的是查看“简单”的测量值(例如RF-Knee [4])是否与这些瀑布测量值相关,因为它们更易于收集。我们展示了更简单的测量与瀑布测量的相关性,还比较了不同HBT材料设计和其他技术的性能。

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