In this work, dynamic load modulation of high power amplifiers using avaractor-based tunable matching network is presented. The feasibility ofdynamic tuning and efficiency enhancement of this technique is demonstratedusing a modular design approach for two existing high efficiency poweramplifiers (PA), a 7-W class-E, and a 10-W class-J power amplifier PA at 1 GHz.For this purpose and for each of the PAs, a simple quasi-static inverse modelis developed allowing an efficiency-optimized control of the PA and thevaractor-based tunable matching network. Modulated measurements using a singlecarrier WCDMA signal with 11.3 dB peak-to-average ratio (PAR) indicate about 10to 14 percentage units improvements in the average power-added efficiency (PAE)for the complete architecture.
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机译：在这项工作中，提出了基于基于变容二极管的可调匹配网络的高功率放大器的动态负载调制。通过使用模块化设计方法针对两个现有的高效功率放大器（PA），1 GHz的7W E类功率放大器和10 W J类功率放大器PA演示了该技术进行动态调谐和提高效率的可行性。为此，针对每个功率放大器，开发了一个简单的准静态逆模型，可以对功率放大器和基于变容二极管的可调匹配网络进行效率优化控制。使用具有11.3 dB峰均比（PAR）的单载波WCDMA信号进行的调制测量表明，整个体系结构的平均功率附加效率（PAE）大约提高了10％至14％。
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