A 2.4 GHz Power Receiver Embedded With a Low-Power Transmitter and PCE of 53.8%, for Wireless Charging of IoT/Wearable Devices

Arash Hejazi,ByeongGi Jang,Reza E. Rad,Jong Wan Jo,Behnam S. Rikan,YoungGun Pu,Sang-Sun Yoo,Keum Cheol Hwang,Youngoo Yang,Kang-Yoon Lee

IEEE Transactions on Microwave Theory and Techniques（2021）

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摘要

This article presents a 2.4 GHz and high-efficiency wireless power receiver (Rx) integrated with a low-power transmitter (Tx) for wireless charging of the Internet-of-Things (IoT) or wearable devices. A single pole double throw (SPDT) circuit isolates the operation of the Rx from Tx, thereby offering the capability of sharing antenna between them. The Rx employs a high-efficiency radio frequency (...

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关键词

Threshold voltage,Radio frequency,Inductive charging,Impedance,Sensitivity,Phase locked loops,Batteries

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