高速电压随动电源的发展及面临的挑战

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Abstract In 3G communication system, the input radio frequency signal to the power amplifier characterizes of high bandwidth and non-constant envelope. Under this condition, constant amplitude power supply to the power amplifier will lead to significant power loss. Therefore, in order to enhance efficient operation, high speed envelope tracking power supply will be used in the future. In this paper, the concept and application backgrounds of high speed envelope tracking power supply are introduced. Meanwhile based on the classification and generalization of all the existent schemes, the advantages, application areas and the shortages when directly used in high speed envelope tracking occasions are discussed. Finally, it is pointed out that the proper system structure, the design of high frequency and high efficiency driving circuit, and the considerations on parasitic effects are the most important challenges in the proposed area.

Key words： 3G communication system power amplifier envelope elimination and restoration technique envelope tracking technique

Received: 11 December 2009 Published: 07 March 2014

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TM464

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	Xi Huan
	Xiong Xiaoling
	Ruan Xinbo

Cite this article:

Xi Huan,Xiong Xiaoling,Ruan Xinbo. Development and Design Challenges of High Speed Envelope Tracking Power Supply[J]. Transactions of China Electrotechnical Society, 2011, 26(9): 151-159.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I9/151

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