A design of high efficiency class-E power amplifier for wireless power transfer system

2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI:10.1109/IMWS2.2011.6027207

Hyung-Gu Park, Joonsung Park, Younggun Pu, Seung-ok Lim, Yeon-Kuk Moon, Sun-Hee Kim, Kangyoon Lee

引用次数: 8

Abstract

In this paper, class-E power amplifier (PA) with automatic power control loop and load compensation circuit is presented. The transmitted power is controlled by adjusting the signal applied to the gate of the power control transistor. In addition, a parallel capacitor is also controlled to enhance the efficiency and compensate for the load variation. This chip is implemented in a 0.35 µm BCD technology, and provides the output power control range of 10–30.2 dBm. The maximum power efficiency of the power amplifier is 71.5 %.

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一种用于无线电力传输系统的高效e类功率放大器设计

介绍了一种具有自动功率控制回路和负载补偿电路的e类功率放大器。通过调节施加到功率控制晶体管栅极的信号来控制发射功率。此外，还控制了并联电容器，以提高效率并补偿负载变化。该芯片采用0.35µm BCD技术实现，输出功率控制范围为10-30.2 dBm。该功率放大器的最大功率效率为71.5%。

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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来源期刊

2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals

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