کنفرانس مهندسی برق ایران

صفحه اصلی / سی امین کنفرانس بین المللی مهندسی برق

Design of a High-Efficiency RF Energy Harvesting System

نویسندگان :

Saeed Abbasi FallahPour¹ Shokrollah Karimian² ٍEsfandiar Mehrshahi³

1- دانشگاه شهید بهشتی 2- دانشگاه شهید بهشتی 3- دانشگاه شهیدبهشتی

کلمات کلیدی :

Energy Harvesting،Power conversion efficiency،RF-DC power converter،Matching Impedance،Diplexer،multi-ton

چکیده :

In this paper, a multi-tone RF energy harvesting system (RFEHS) is designed to operate at ISM bands of 915MHz and 2.45GHz. Thanks to its duplexed input design configuration, the RFEHS offers 40.53% efficiency at minimal output impedance value of 5.7kΩ. To mimic real applications of the proposed design, wideband input RF is applied at –20dBm power level to the multi-tone RFEHS, which results into 2.33V output voltage at a load impedance of 3.98kΩ. This is more than four times better than a similar single-tone system with the same load impedance. Therefore, the approach can be extended to multiband systems to offer yet more output voltage and higher efficiencies at multiple frequencies as well.

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