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所属单位：自动化学院

发表刊物：IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS

关键字：Envelope tracking (ET) multilevel converter power amplifier (PA) switched capacitor

摘要：Envelope tracking (ET) is one of the important techniques for greatly improving the efficiency of the power amplifier since it employs an ET power supply to provide a dynamic voltage that tracks the envelope of the radio frequency signal. In order to achieve a compact design of the ET power supply consisting of a multilevel converter and a linear amplifier, which are connected in series, this letter proposes a step-wave switched capacitor converter to realize the multilevel converter, which uses less magnetic components and is easier for integration. A prototype is fabricated and tested, aiming for a 5-MHz envelope signal tracking with maximum output power of 16.7 W. The experimental results verify the effectiveness of the proposed converter, and the efficiency of ET power supply is 73.6%.

ISSN号：0278-0046

是否译文：否

发表时间：2017-12-01

合写作者：Jin, Qian,任小永,Wang, Yazhou,冷阳

通讯作者：阮新波