Matching network elimination in broadband rectennas for high-efficiency wireless power transfer and energy harvesting

Song, Chaoyun and Huang, Yi and Zhou, Jiafeng and Carter, Paul and Yuan, Sheng and Xu, Qian and Fei, Zhouxiang (2017) Matching network elimination in broadband rectennas for high-efficiency wireless power transfer and energy harvesting. IEEE Transactions on Industrial Electronics, 64 (5). pp. 3950-3961. ISSN 0278-0046 (https://doi.org/10.1109/TIE.2016.2645505)

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Abstract

Impedance matching networks for nonlinear devices such as amplifiers and rectifiers are normally very challenging to design, particularly for broadband and multiband devices. A novel design concept for a broadband high-efficiency rectenna without using matching networks is presented in this paper for the first time. An off-center-fed dipole antenna with relatively high input impedance over a wide frequency band is proposed. The antenna impedance can be tuned to the desired value and directly provides a complex conjugate match to the impedance of a rectifier. The received RF power by the antenna can be delivered to the rectifier efficiently without using impedance matching networks; thus, the proposed rectenna is of a simple structure, low cost, and compact size. In addition, the rectenna can work well under different operating conditions and using different types of rectifying diodes. A rectenna has been designed and made based on this concept. The measured results show that the rectenna is of high power conversion efficiency (more than 60%) in two wide bands, which are 0.9-1.1 and 1.8-2.5 GHz, for mobile, Wi-Fi, and ISM bands. Moreover, by using different diodes, the rectenna can maintain its wide bandwidth and high efficiency over a wide range of input power levels (from 0 to 23 dBm) and load values (from 200 to 2000 Ω). It is, therefore, suitable for high-efficiency wireless power transfer or energy harvesting applications. The proposed rectenna is general and simple in structure without the need for a matching network hence is of great significance for many applications.

  • Item type:Article
    ID code:71963
    Dates:
    Date
    Event
    10 April 2017
    Published
    28 December 2016
    Published Online
    3 December 2016
    Accepted
    Notes:© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:02 Apr 2020 10:44
    Last modified:25 Apr 2024 01:14
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/71963
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