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. 2021 Jan 22;13(3):357. doi: 10.3390/polym13030357

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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The general structure of flexible microstrip patch antenna (a) Ground plane (b) Flexible substrate (c) Transmission line (d) Feed (e) Conductive patch.