A Novel Class-F 2.45/5.8 GHz Dual-Band Rectifier for Wireless Power Transmission

This letter proposes a high-efficiency dual-band class-F rectifier for wireless power transmission (WPT). The rectifier comprises a dual-band harmonic termination network, a dual-band matching network, a single Schottky diode, and a dc pass filter. A theoretical analysis of the harmonic termination...

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Bibliographic Details
Published in:IEEE microwave and wireless technology letters (Print) 2024-01, Vol.34 (1), p.1-4
Main Authors: Xiao, Siyi, Liu, Changjun, He, Haoming, Feng, Yuhao, Che, Wenquan
Format: Article
Language:English
Subjects:
Band theory
Class-F
Dual band
Frequency measurement
Harmonic analysis
Harmonic control
Impedance
Microwave filters
Power harmonic filters
rectifier
Rectifiers
Schottky diodes
Wireless power transmission
wireless power transmission (WPT)
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Summary:This letter proposes a high-efficiency dual-band class-F rectifier for wireless power transmission (WPT). The rectifier comprises a dual-band harmonic termination network, a dual-band matching network, a single Schottky diode, and a dc pass filter. A theoretical analysis of the harmonic termination network is performed to improve the rectifying efficiency. The network exhibits good class-F operation by controlling the second and third harmonics in dual bands. A rectifier operating at 2.45 and 5.8 GHz was designed, fabricated, and measured for validation. The measurements show maximum RF-dc conversion efficiencies of 74.9% and 61.9% with 200 and 500 ~\Omega loads at 2.45 and 5.8 GHz, respectively. The proposed rectifier achieves dual-band harmonic control with high efficiency.
ISSN:2771-957X
2771-9588
DOI:10.1109/LMWT.2023.3330322