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A 2.4-GHz CMOS Differential Class-DE Rectifier with Coupled Inductors
Hu, Tingxu1; Huang, Mo1; Lu, Yan1; Zhang, Xiu Yin2; Maloberti, Franco3; Martins, Rui1,4
2021-09-01
Source PublicationIEEE Transactions on Power Electronics
ISSN0885-8993
Volume36Issue:9Pages:9864-9875
Abstract

In this article, we present a 2.4-GHz differential class-DE synchronous rectifier. First, we investigate zero-voltage switching (ZVS), zero-current switching (ZCS), and impedance matching requirements for the single-ended class-DE rectifier. Then, we propose a differential topology that achieves near-optimum ZVS, ZCS, and impedance matching with a reduced number of LC networks. We use a coupled inductor structure to reduce the cost overhead of the differential topology and discuss its design considerations. To maintain the ZVS/ZCS operation within a wide input power range, we employ an adaptive bias circuit to adjust the gate bias voltages with the input power. Additionally, we discuss the imperfections caused by load variation. The chip, fabricated in a 65-nm CMOS process, measures the peak power conversion efficiency (PCE) of 68.5% at a 9-dBm input power with a 250-Ω load resistance. The measured input power range when PCE > 40% is 16 dB.

KeywordClass-de Rectifier Cmos Differential Rectifier Coupled Inductors Radio Frequency (Rf) Wireless Power Transfer (Wpt)
DOI10.1109/TPEL.2021.3061703
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000658410200020
Scopus ID2-s2.0-85101784063
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorHuang, Mo
Affiliation1.State Key Laboratory of Analog and Mixed-Signal Vlsi, Faculty of Science and Technology, Department of Electrical and Computer Engineering, Institute of Microelectronics, University of Macau, 999078, Macao
2.School of Electronic and Information Engineering, South China University of Technology, Guangzhou, 510641, China
3.Department of Electrical Computer and Biomedical Engineering, University of Pavia, Pavia, 27100, Italy
4.Instituto Superior Tcnico, Universidade de Lisboa, Lisbon, 1049-001, Portugal
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Hu, Tingxu,Huang, Mo,Lu, Yan,et al. A 2.4-GHz CMOS Differential Class-DE Rectifier with Coupled Inductors[J]. IEEE Transactions on Power Electronics,2021,36(9):9864-9875.
APA Hu, Tingxu,Huang, Mo,Lu, Yan,Zhang, Xiu Yin,Maloberti, Franco,&Martins, Rui.(2021).A 2.4-GHz CMOS Differential Class-DE Rectifier with Coupled Inductors.IEEE Transactions on Power Electronics,36(9),9864-9875.
MLA Hu, Tingxu,et al."A 2.4-GHz CMOS Differential Class-DE Rectifier with Coupled Inductors".IEEE Transactions on Power Electronics 36.9(2021):9864-9875.
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