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Compact high efficiency circularly polarized rectenna based on artificial magnetic conductor

Li, Lin, Yang, Xue-Xia, Zhu, Geliang, Luo, Qi, Gao, Steven (2019) Compact high efficiency circularly polarized rectenna based on artificial magnetic conductor. International Journal of Microwave and Wireless Technologies, . ISSN 1759-0787. (doi:10.1017/S1759078719000448) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
https://doi.org/10.1017/S1759078719000448

Abstract

A compact circularly polarized (CP) rectenna with low profile and high efficiency based on the artificial magnetic conductor (AMC) is proposed in this paper. The receiving CP antenna is a coplanar stripline fed dual rhombic loop with an AMC reflector. The proposed AMC reflector not only improves the antenna gain to 9.8 dBi but also decreases the profile to 0.1 λ0. The AMC reflector also makes the antenna have a harmonic suppression function so the low pass filter between the rectifying circuit and the antenna could be omitted and the rectenna has a compact structure. According to the measured results, the rectenna has the highest conversion efficiency of 76% on the load of 240 Ω with the received power of 117.5 mW. When the linearly polarized transmitting antenna is rotated, the conversion efficiency of the CP rectenna maintains a constant high conversion efficiency of 74%. The compact structure and CP operation of the rectenna made it a good candidate of the wireless battery for some electronic devices and far-distance microwave power transmission.

Item Type: Article
DOI/Identification number: 10.1017/S1759078719000448
Uncontrolled keywords: Artificial magnetic conductor (AMC), circular polarization, conversion efficiency, coplanar stripline (CPS), rectennas
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Depositing User: Steven Gao
Date Deposited: 03 Jul 2019 14:16 UTC
Last Modified: 03 Jul 2019 14:21 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/75170 (The current URI for this page, for reference purposes)
Gao, Steven: https://orcid.org/0000-0002-7402-9223
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