IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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A unified DLL-controlled active rectifier in 6.78 MHz resonant-coupling wireless power receivers for space-limited portable and wearable applications
Hee-am ShinYoung-Jae Min
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2018 Volume 15 Issue 12 Pages 20180399

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Abstract

An active rectifier in 6.78 MHz resonant-coupling wireless power receivers for space-limited portable and wearable applications is presented. To improve the power efficiency and reduce the die area, a fully NMOS transistor-based active rectifier with a unified delay-locked loop (DLL) controller is proposed. The proposed rectifier has been implemented in a 0.35 µm CMOS technology with a die area of 0.612 mm2. The measured peak and minimum power efficiency within the power range of 80 mw to 440 mW are 91.8% and 69.6%, respectively.

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© 2018 by The Institute of Electronics, Information and Communication Engineers
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