An 87% Efficient Wireless Powered System Using Adaptively Controlled Active Rectifier for Smart Electronics

This brief presents an efficient wireless powered system (WPS) for smart electronics, including battery charging. To enhance the performance of WPS, we have utilized an adaptively-controlled active rectifier matrix (AARM) that helps to regulate the output voltage over a wide-range load variation. In...

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Bibliographic Details
Published in:	2022 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) pp. 144 - 146
Main Authors:	Chandrarathna, Seneke Chamith, Qraiqea, Hamdi, Jana, Mohammad Sami, Lee, Jong-Wook
Format:	Conference Proceeding
Language:	English
Published:	IEEE 29-08-2022
Subjects:	active rectifier matrix adaptively-controlled Control systems Current measurement digital compensation High-voltage techniques Load management Radio frequency Rectifiers Wireless communication Wireless power
Online Access:	Get full text
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Summary:	This brief presents an efficient wireless powered system (WPS) for smart electronics, including battery charging. To enhance the performance of WPS, we have utilized an adaptively-controlled active rectifier matrix (AARM) that helps to regulate the output voltage over a wide-range load variation. In addition, we propose a digital compensation circuit that adjusts both turn-on and turn-off times to compensate for delays of the comparator when it turns off and on. The proposed WPS is implemented in a 0.18 \mum high-voltage Bipolar-CMOS-DMOS(BCD) process. The WPS can achieve 270 mW of the peak (a) power while flowing 135 mA of the load current. The measured peak conversion efficiency is S7% at 0. 89mW of the output power.
DOI:	10.1109/RFIT54256.2022.9882475