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An 87% Efficient Wireless Powered System Using Adaptively Controlled Active Rectifier for Smart Electronics
DOI:10.1109/RFIT54256.2022.9882475.png)
Abstract
En 中文
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 mu m 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.
Keywords:
Wireless power
adaptively-controlled
active rectifier matrix
digital compensation
Journal
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Papers:
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