Loading...
A cross-coupled 3 × /4× step-up AC-DC converters for RFID tags
Author(s)
Date Issued
July 30, 2010
Type
Conference Paper
Abstract
Due to the threshold voltage drop caused by diode-switches, conventional AC-DC converters for RFID tags cannot be applied to mobile applications which require higher voltages. To make matters worse, the power efficiency decreases by the influence of threshold voltage. To solve these problems, two types of cross-coupled AC-DC converters for RFID tags are proposed in this paper: the 3× step-up converter and the 4× step-up converter. By using negative step-up converters and cross-coupled connection of CMOS switches, the proposed converters are able not only to offer higher output voltages but also to improve power efficiency. The characteristics of the proposed converters are clarified by theoretical analyses. Furthermore, the SPICE simulation and the experiment showed the validity of theoretical formulas and circuit design.
Citation
Ecti Con 2010 the 2010 Ecti International Conference on Electrical Engineering Electronics Computer Telecommunications and Information Technology, 1221-1225, 2010