Design of Broadband Doherty Power Amplifier Based on Misaligned Current Phase
Yinlong Hu,
Decheng Gan,
Weimin Shi
Abstract:A broadband Doherty power amplifier (DPA) always experiences an efficiency degradation between two efficiency peaks, especially at two side bands. In this study, the efficiency degradation was demonstrated to be caused caused by the in-phase power combining at the saturation power level. To solve this problem, current misalignment was introduced into the broadband DPA design. The carrier and peaking PA have different current phases when performing the power combination at the saturation power level. In this wo… Show more
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