Power Amplifiers for WPT
Analog Circuits and Signal Processing（2018）
摘要
Two main choices of the power amplifier (PA) for wireless power transfer (WPT) are Class-D and Class-E PAs. In this chapter, process selection and power loss analysis for high efficiency PAs are discussed first, followed by the discussion on zero-voltage (or zero-current) switching techniques for switching loss reduction. Operation principles and design considerations of both Class-D and Class-E PAs are then discussed. Finally, comparisons are made between these two selections.
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关键词
Wireless power transfer, Power amplifier, Class-D, Class-E, Soft-switching, Zero voltage switching (ZVS), Zero-current switching (ZCS)
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