Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/87956
Title: Effects of cement paste enhanced with iron-based magnetic particles on an embedded small resonator antenna
Authors: Sum, Yee Loon
Rheinheimer, Vanessa
Soong, Boon Hee
Monteiro, Paulo J. M.
Keywords: Antenna
Magnetic Particles
Issue Date: 2017
Source: Sum, Y. L., Rheinheimer, V., Soong, B. H., & Monteiro, P. J. M. (2017). Effects of cement paste enhanced with iron-based magnetic particles on an embedded small resonator antenna. Scientific Reports, 7, 15185-.
Series/Report no.: Scientific Reports
Abstract: Small resonator antennas, such as metaresonator antennas, have narrow bandwidths, which limits their effective range of frequencies. When they are used as embedded antennas in building materials, their performance is affected more than other types of antennas, as typical building materials have a shielding effectiveness (SE) of 80 dB to 100 dB. Adding magnetic and/or metallic particles to cement mixes changes the properties of the concrete, which can improve the performance of antennas. Specifically, enhancing a cement paste with iron-based magnetic particles improves the bandwidth and S11 of embedded antennas. This report investigates the impact of two different iron-based magnetic particle sizes (micro- and nanosized particles) to determine the effects that they have on the S11 and S21 characteristics of the metaresonator antenna array embedded in enhanced cement pastes. Results show that compared to cement paste only sample, cement paste with micro-sized iron-based magnetic particles had the greatest improvement of performance of a metaresonator antenna array in terms of a small shift in the resonance frequency and an increase of bandwidth. Particularly for a cement paste enhanced with micro-sized iron (III) oxide particles, the S21 curve was improved over the cement paste only sample by as much as 10 dB.
URI: https://hdl.handle.net/10356/87956
http://hdl.handle.net/10220/45582
ISSN: 2045-2322
DOI: http://dx.doi.org/10.1038/s41598-017-15289-6
Rights: © 2017 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Te images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
metadata.item.grantfulltext: open
metadata.item.fulltext: With Fulltext
Appears in Collections:EEE Journal Articles

Google ScholarTM

Check

Altmetric

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.