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International Journal of Antennas and Propagation
Volume 2018, Article ID 3241581, 7 pages
https://doi.org/10.1155/2018/3241581
Research Article

Low-Cost Printed Flexible Antenna by Using an Office Printer for Conformal Applications

1Wireless Communication Centre, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
2Department of Electrical Engineering, Faculty of Engineering, Islamic University of Madinah, Al-Madinah, Saudi Arabia
3Department of Electrical Engineering, Mu’tah University, Mu’tah, Jordan
4Charles Sturt University, Bathurst, NSW, Australia
5Faculty of Engineering, Multimedia University, Cyberjaya, Malaysia

Correspondence should be addressed to Hassan Tariq Chattha; moc.liamtoh@34ahttahc

Received 24 August 2017; Revised 17 November 2017; Accepted 6 December 2017; Published 14 February 2018

Academic Editor: Xuejun Lu

Copyright © 2018 Kashif Nisar Paracha et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A low-cost inkjet printing method for antenna fabrication on a polyethylene terephthalate (PET) substrate is presented in this paper. An office inkjet printer is used to have desired patterns of silver nanoparticle ink on the PET substrate without any postprocessing. Silver nanoparticle ink cures instantly as soon as it is ejected from the printer on a chemically treated PET substrate. The thickness of the silver nanoparticle layer was measured to be 300 nm with a sheet resistance of as low as 0.3 Ω/sq and a conductivity around 1.11 × 107 S/m with single layer deposition. A coplanar waveguide- (CPW-) fed Z-shape planar antenna on the PET substrate achieved the measured radiation efficiency of 62% and the IEEE gain of 1.44 dBi at 2.45 GHz. The printed antenna is also tested in bending conditions to ascertain its performance for the Internet of things (IoT) conformal applications for the future 5G network.