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A Passive Wireless Crack Sensor Based on Patch Antenna with Overlapping Sub-Patch

Monolithic patch antennas for deformation measurements are designed to be stressed. To avoid the issues of incomplete strain transfer ratio and insufficient bonding strength of stressed antennas, this paper presents a passive wireless crack sensor based on an unstressed patch antenna. The rectangula...

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Detalles Bibliográficos
Autores principales: Xue, Songtao, Yi, Zhuoran, Xie, Liyu, Wan, Guochun, Ding, Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6806618/
https://www.ncbi.nlm.nih.gov/pubmed/31591304
http://dx.doi.org/10.3390/s19194327
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author Xue, Songtao
Yi, Zhuoran
Xie, Liyu
Wan, Guochun
Ding, Tao
author_facet Xue, Songtao
Yi, Zhuoran
Xie, Liyu
Wan, Guochun
Ding, Tao
author_sort Xue, Songtao
collection PubMed
description Monolithic patch antennas for deformation measurements are designed to be stressed. To avoid the issues of incomplete strain transfer ratio and insufficient bonding strength of stressed antennas, this paper presents a passive wireless crack sensor based on an unstressed patch antenna. The rectangular radiation patch of the proposed sensor is partially covered by a radiation sub-patch, and the overlapped length between them will induce the resonate frequency shift representing the crack width. First, the cavity model theory is adopted to show how the resonant frequencies of the crack sensor are related to the overlapped length between the patch antenna and the sub-patch. This phenomenon is further verified by numerical simulation using the Ansoft high-frequency structure simulator (HFSS), and results show a sensitivity of 120.24 MHz/mm on average within an effective measuring range of 1.5 mm. One prototype of proposed sensor was fabricated. The experiments validated that the resonant frequency shifts are linearly proportional to the applied crack width, and the resolution is suitable for crack width measuring.
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spelling pubmed-68066182019-11-07 A Passive Wireless Crack Sensor Based on Patch Antenna with Overlapping Sub-Patch Xue, Songtao Yi, Zhuoran Xie, Liyu Wan, Guochun Ding, Tao Sensors (Basel) Article Monolithic patch antennas for deformation measurements are designed to be stressed. To avoid the issues of incomplete strain transfer ratio and insufficient bonding strength of stressed antennas, this paper presents a passive wireless crack sensor based on an unstressed patch antenna. The rectangular radiation patch of the proposed sensor is partially covered by a radiation sub-patch, and the overlapped length between them will induce the resonate frequency shift representing the crack width. First, the cavity model theory is adopted to show how the resonant frequencies of the crack sensor are related to the overlapped length between the patch antenna and the sub-patch. This phenomenon is further verified by numerical simulation using the Ansoft high-frequency structure simulator (HFSS), and results show a sensitivity of 120.24 MHz/mm on average within an effective measuring range of 1.5 mm. One prototype of proposed sensor was fabricated. The experiments validated that the resonant frequency shifts are linearly proportional to the applied crack width, and the resolution is suitable for crack width measuring. MDPI 2019-10-07 /pmc/articles/PMC6806618/ /pubmed/31591304 http://dx.doi.org/10.3390/s19194327 Text en © 2019 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/).
spellingShingle Article
Xue, Songtao
Yi, Zhuoran
Xie, Liyu
Wan, Guochun
Ding, Tao
A Passive Wireless Crack Sensor Based on Patch Antenna with Overlapping Sub-Patch
title A Passive Wireless Crack Sensor Based on Patch Antenna with Overlapping Sub-Patch
title_full A Passive Wireless Crack Sensor Based on Patch Antenna with Overlapping Sub-Patch
title_fullStr A Passive Wireless Crack Sensor Based on Patch Antenna with Overlapping Sub-Patch
title_full_unstemmed A Passive Wireless Crack Sensor Based on Patch Antenna with Overlapping Sub-Patch
title_short A Passive Wireless Crack Sensor Based on Patch Antenna with Overlapping Sub-Patch
title_sort passive wireless crack sensor based on patch antenna with overlapping sub-patch
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6806618/
https://www.ncbi.nlm.nih.gov/pubmed/31591304
http://dx.doi.org/10.3390/s19194327
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