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Article

Embroidered Textile Antennas: Influence of Moisture in Communication and Sensor Applications

Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, HR-10000 Zagreb, Croatia
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Author to whom correspondence should be addressed.
Academic Editors: Akram Alomainy, Slawomir J. Ambroziak, Patrick Van Torre and Antonio Lázaro
Sensors 2021, 21(12), 3988; https://doi.org/10.3390/s21123988
Received: 7 May 2021 / Revised: 2 June 2021 / Accepted: 6 June 2021 / Published: 9 June 2021
(This article belongs to the Special Issue Body-Centric Sensors for the Internet of Things)
Moisture causes detuning and increased losses in textile antennas, and it affects resonant and wideband textile antennas differently. In this work, we studied the effect of moisture on a resonant textile planar inverted-F antenna (PIFA) and a wideband textile monopole antenna. Both antennas were manufactured by embroidering conductive yarn in denim textile. The input reflection coefficient, antenna gain, and gain patterns were measured on both antennas for different moisture contents. The results show that wideband antennas are less affected by moisture in comparison with resonant antennas. For communications applications, large moisture content in the textile antenna should be avoided; therefore a flexible, textile-based waterproofing antenna cover was proposed, manufactured, and tested. On the other hand, the effect of antenna detuning by moisture can be used for moisture-sensing application. This concept was demonstrated on the resonant textile PIFA in transmission and reflection setups, showing that the reflection setup gives better results. View Full-Text
Keywords: textile antenna; embroidered antenna; patch antenna; PIFA; wideband planar monopole; moisture; waterproofing; moisture sensor textile antenna; embroidered antenna; patch antenna; PIFA; wideband planar monopole; moisture; waterproofing; moisture sensor
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MDPI and ACS Style

Bonefačić, D.; Bartolić, J. Embroidered Textile Antennas: Influence of Moisture in Communication and Sensor Applications. Sensors 2021, 21, 3988. https://doi.org/10.3390/s21123988

AMA Style

Bonefačić D, Bartolić J. Embroidered Textile Antennas: Influence of Moisture in Communication and Sensor Applications. Sensors. 2021; 21(12):3988. https://doi.org/10.3390/s21123988

Chicago/Turabian Style

Bonefačić, Davor, and Juraj Bartolić. 2021. "Embroidered Textile Antennas: Influence of Moisture in Communication and Sensor Applications" Sensors 21, no. 12: 3988. https://doi.org/10.3390/s21123988

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