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Dual-Band Rectifier Using Coupled Inductor for Wireless Power Transfer Receivers
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- Authors
- Dongmin Kim, Jongyoon Chae, Ki-Bum Park, Gun-Woo Moon
- Issue Date
- 2025-05
- Citation
- IEEE Transactions on Power Electronics, v.40, no.5, pp.7488-7499
- ISSN
- 0885-8993
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- This article proposes a dual-band wireless power receiver capable of both kHz-band and MHz-band wireless charging. The proposed rectifier automatically switches between two charging modes depending on the frequency band of the input signal. It operates as a class D rectifier at low-frequency band input and a class E rectifier at high-frequency band input. This mode change requires no active elements, additional sensing circuits, or external control signals. Therefore, the proposed circuit can be utilized as a low-cost, high-power-density dual-band wireless power receiver. The proposed circuit is verified through a prototype supporting 45 W low-frequency charging and 20 W high-frequency charging.
- KSP Keywords
- Active Element, Control Signal, External control, High Power density, High frequency(HF), Low frequency, Low-cost, Mode change, Wireless Power Receiver, Wireless power transfer, charging mode