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Communication

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

1
College of Information and Communication Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Korea
2
Electrical Environment Research Center, Korea Electrotechnology Research Institute, Changwon-si 51543, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Federico Alimenti
Sensors 2021, 21(5), 1608; https://doi.org/10.3390/s21051608
Received: 13 January 2021 / Revised: 22 February 2021 / Accepted: 23 February 2021 / Published: 25 February 2021
(This article belongs to the Section Electronic Sensors)
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%. View Full-Text
Keywords: wireless power transmission; RF synchronous rectifier; class-F power amplifier; GaN HEMT device; time reversal duality; independent harmonic tuning circuit wireless power transmission; RF synchronous rectifier; class-F power amplifier; GaN HEMT device; time reversal duality; independent harmonic tuning circuit
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MDPI and ACS Style

Na, J.; Yi, S.-H.; Shin, J.; Koo, H.; Bae, J.; Hwang, K.-C.; Lee, K.-Y.; Yang, Y. 2.4 GHz GaN HEMT Class-F Synchronous Rectifier Using an Independent Second Harmonic Tuning Circuit. Sensors 2021, 21, 1608. https://doi.org/10.3390/s21051608

AMA Style

Na J, Yi S-H, Shin J, Koo H, Bae J, Hwang K-C, Lee K-Y, Yang Y. 2.4 GHz GaN HEMT Class-F Synchronous Rectifier Using an Independent Second Harmonic Tuning Circuit. Sensors. 2021; 21(5):1608. https://doi.org/10.3390/s21051608

Chicago/Turabian Style

Na, Jongyun, Sang-Hwa Yi, Jaekyung Shin, Hyungmo Koo, Jongseok Bae, Keum-Cheol Hwang, Kang-Yoon Lee, and Youngoo Yang. 2021. "2.4 GHz GaN HEMT Class-F Synchronous Rectifier Using an Independent Second Harmonic Tuning Circuit" Sensors 21, no. 5: 1608. https://doi.org/10.3390/s21051608

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