A Compact Rectenna Design With Wide Input Power Range for Wireless Power Transfer

Ping Lu; Chaoyun Song; Ka Ma Huang

doi:10.1109/TPEL.2019.2963422

A Compact Rectenna Design With Wide Input Power Range for Wireless Power Transfer

Ping Lu, Chaoyun Song, Ka Ma Huang

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

107 Downloads (Pure)

Abstract

A compact rectenna with a wide input power range is proposed for wireless power transfer (WPT). Two different diodes, having distinct operating powers, i.e., high-input-power diode and low-input-power diode, are introduced to the rectenna design for extending the operating input power range. A mid-inductor is placed in the rectifying circuit to isolate the radio frequency (RF) signal from dc power, thereby delivering the rectified dc power to the load. Also, with the aid of mid-inductor, the fundamental RF signal and harmonic signals could flow back to the two rectifying diodes for achieving higher conversion efficiency via the means of harmonic signal re-rectification. Owing to the mid-inductor, the sub-rectifier circuit can be avoided, and a compact structure can therefore be realized. Over 50% measured conversion efficiency, η _c can be achieved in a very wide input power range of 35 dB (-10 to 25 dBm). The proposed rectenna can be widely used in WPT systems with unpredictable and variable RF energy levels.

Original language	English
Pages (from-to)	6705-6710
Number of pages	6
Journal	IEEE Transactions on Power Electronics
Volume	35
Issue number	7
Early online date	1 Jan 2020
DOIs	https://doi.org/10.1109/TPEL.2019.2963422
Publication status	Published - 1 Jul 2020

Keywords

Compact rectenna
harmonic recycling
wide input power range
wireless power transfer

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TPEL.2019.2963422

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A Compact Rectenna Design With Wide Input Power Range for Wireless Power Transfer

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Keywords

ASJC Scopus subject areas

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