Second Harmonic Exploitation for High-Efficiency Wireless Power Transfer Using Duplexing Rectenna

Sumin David Joseph; Yi Huang; Shawn S. H. Hsu; Ahmed Alieldin; Chaoyun Song

doi:10.1109/TMTT.2020.3039604

Second Harmonic Exploitation for High-Efficiency Wireless Power Transfer Using Duplexing Rectenna

Sumin David Joseph, Yi Huang, Shawn S. H. Hsu, Ahmed Alieldin, Chaoyun Song

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

13 Citations (Scopus)

56 Downloads (Pure)

Abstract

In this article, a novel duplexing rectenna with harmonic feedback capability is proposed for efficient wireless power transfer (WPT) applications. The proposed duplexing rectenna can harvest the incoming radio frequency (RF) energy efficiently and also make use of an inherent harmonic signal, which is sent back to the RF transmitter (Tx) for positioning in order to guide the radiation patterns from Tx antenna array for optimum WPT. A novel duplexing dipole antenna is designed based on the top loading and capacitive gap effects. It is used to receive RF power at fundamental frequency 0.915 GHz and transmit the second harmonic signals at 1.83 GHz as a feedback. Experimental validation of a complete WPT system with beam-scanning capability has been carried out. It is shown that the fabricated rectifier has realized a maximum RF-dc conversion efficiency of 71% (at 15-dBm input power) and a measured peak second harmonic power of -1 dBm. Thus, the proposed duplexing rectenna can form a closed-loop system by providing its location information for efficient WPT applications.

Original language	English
Pages (from-to)	482-494
Number of pages	13
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	69
Issue number	1
Early online date	10 Dec 2020
DOIs	https://doi.org/10.1109/TMTT.2020.3039604
Publication status	Published - Jan 2021

Keywords

Antenna
duplexing antenna
harmonic feedback
rectenna
rectifier
second harmonic
wireless power transfer (WPT).

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "Second Harmonic Exploitation for High-Efficiency Wireless Power Transfer Using Duplexing Rectenna",

abstract = "In this article, a novel duplexing rectenna with harmonic feedback capability is proposed for efficient wireless power transfer (WPT) applications. The proposed duplexing rectenna can harvest the incoming radio frequency (RF) energy efficiently and also make use of an inherent harmonic signal, which is sent back to the RF transmitter (Tx) for positioning in order to guide the radiation patterns from Tx antenna array for optimum WPT. A novel duplexing dipole antenna is designed based on the top loading and capacitive gap effects. It is used to receive RF power at fundamental frequency 0.915 GHz and transmit the second harmonic signals at 1.83 GHz as a feedback. Experimental validation of a complete WPT system with beam-scanning capability has been carried out. It is shown that the fabricated rectifier has realized a maximum RF-dc conversion efficiency of 71% (at 15-dBm input power) and a measured peak second harmonic power of -1 dBm. Thus, the proposed duplexing rectenna can form a closed-loop system by providing its location information for efficient WPT applications.",

keywords = "Antenna, duplexing antenna, harmonic feedback, rectenna, rectifier, second harmonic, wireless power transfer (WPT).",

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AU - Huang, Yi

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AU - Song, Chaoyun

PY - 2021/1

Y1 - 2021/1

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AB - In this article, a novel duplexing rectenna with harmonic feedback capability is proposed for efficient wireless power transfer (WPT) applications. The proposed duplexing rectenna can harvest the incoming radio frequency (RF) energy efficiently and also make use of an inherent harmonic signal, which is sent back to the RF transmitter (Tx) for positioning in order to guide the radiation patterns from Tx antenna array for optimum WPT. A novel duplexing dipole antenna is designed based on the top loading and capacitive gap effects. It is used to receive RF power at fundamental frequency 0.915 GHz and transmit the second harmonic signals at 1.83 GHz as a feedback. Experimental validation of a complete WPT system with beam-scanning capability has been carried out. It is shown that the fabricated rectifier has realized a maximum RF-dc conversion efficiency of 71% (at 15-dBm input power) and a measured peak second harmonic power of -1 dBm. Thus, the proposed duplexing rectenna can form a closed-loop system by providing its location information for efficient WPT applications.

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Second Harmonic Exploitation for High-Efficiency Wireless Power Transfer Using Duplexing Rectenna

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Keywords

ASJC Scopus subject areas

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