采用独立二次谐波调谐电路的2.4GHz氮化镓高电子迁移率晶体管F类同步整流器。

2.4 GHz GaN HEMT Class-F Synchronous Rectifier Using an Independent Second Harmonic Tuning Circuit.

作者信息

Na Jongyun, Yi Sang-Hwa, Shin Jaekyung, Koo Hyungmo, Bae Jongseok, Hwang Keum Cheol, Lee Kang-Yoon, Yang Youngoo

机构信息

College of Information and Communication Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Korea.

Electrical Environment Research Center, Korea Electrotechnology Research Institute, Changwon-si 51543, Korea.

出版信息

Sensors (Basel). 2021 Feb 25;21(5):1608. doi: 10.3390/s21051608.

DOI:10.3390/s21051608

PMID:33668929

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7956501/

Abstract

This paper proposes a class-F synchronous rectifier using an independent second harmonic tuning circuit for the power receiver of 2.4 GHz wireless power transmission systems. The synchronous rectifier can be designed by inverting the RF output port to the RF input port of the pre-designed class-F power amplifier based on time reversal duality. The design of the class-F power amplifier deploys an independent second harmonic tuning circuit in the matching networks to individually optimize the impedances of the fundamental and the second harmonic. The synchronous rectifier at the 2.4 GHz frequency is designed and implemented using a 6 W gallium nitride high electron mobility transistor (GaN HEMT). Peak RF-dc conversion efficiency of the rectifier of 69.6% is achieved with a dc output power of about 7.8 W, while the peak drain efficiency of the class-F power amplifier is 72.8%.

摘要

本文提出了一种用于2.4GHz无线电力传输系统功率接收器的F类同步整流器，该整流器采用独立的二次谐波调谐电路。基于时间反转对偶性，通过将预设计的F类功率放大器的射频输出端口反转为射频输入端口，可设计出同步整流器。F类功率放大器的设计在匹配网络中部署了独立的二次谐波调谐电路，以分别优化基波和二次谐波的阻抗。使用6W氮化镓高电子迁移率晶体管（GaN HEMT）设计并实现了2.4GHz频率的同步整流器。整流器的峰值射频-直流转换效率达到69.6%，直流输出功率约为7.8W，而F类功率放大器的峰值漏极效率为72.8%。