负载失配下功率放大器效率提高的可调失相

2012 IEEE/MTT-S International Microwave Symposium Digest Pub Date : 2012-06-17 DOI:10.1109/MWSYM.2012.6259701

César Sánchéz-Perez, D. Sardin, M. Roberg, J. de Mingo, Z. Popovic

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引用次数: 5

摘要

射频高功率放大器中的负载失配会导致放大器效率降低或失效。本文采用带可调谐非隔离组合器的分相结构代替阻抗调谐来降低对负载变化的灵敏度。在2.14GHz的两个GaN类AB放大器上的实验结果表明，在很宽的阻抗范围内保持50%以上的效率是可能的，同时将输出功率保持在20W左右的几个dB内。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Tunable outphasing for power amplifier efficiency improvement under load mismatch

Load mismatch in RF high power amplifier leads to efficiency reduction or amplifier failure. Instead of impedance tuning, in this paper an outphasing architecture with a tunable non-isolated combiner is used to reduce sensitivity to load variations. Experimental results with two GaN class AB amplifiers at 2.14GHz show it is possible to maintain the efficiency above 50% over a wide range of impedances, while maintaining the output power within a few dB around 20W.

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2012 IEEE/MTT-S International Microwave Symposium Digest

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