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

izvorni znanstveni rad

izvorni znanstveni rad

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

Vrsta prilog u časopisu
Tip izvorni znanstveni rad
Godina 2021
Časopis Sensors
Nadređena publikacija Sensors
Volumen 21
Svesčić 12
Stranice 3988, 17
DOI 10.3390/s21123988
EISSN 1424-8220
Status objavljeno

Sažetak

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.

Ključne riječi

textile antenna ; embroidered antenna ; patch antenna ; PIFA ; wideband planar monopole ; moisture ; waterproofing ; moisture sensor