Design of Polyimide-Coated Yagi-Uda Antennas for Monitoring the Relative Humidity Level

Coating an antenna with a hydrophilic polyimide film has been reported to enhance the effects of atmospheric relative humidity on the characteristics of the antenna. In this letter, we designed Yagi-Uda antennas with polyimide-coated dipoles, and we performed a simulation study investigating the inf...

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Bibliographic Details
Published in:IEEE geoscience and remote sensing letters 2017-06, Vol.14 (6), p.961-963
Main Authors: Salas-Sanchez, Aaron Angel, Lopez-Martin, Maria Elena, Rodriguez-Gonzalez, Juan Antonio, Ares-Pena, Francisco Jose
Format: Article
Language:English
Subjects:
Antenna measurements
Antennas
Array antennas
Atmospheric measurements
Atmospheric modeling
Coatings
Dipole antennas
Dipoles
Humidity
hydrophilic polyimide coating
Monitoring
Relative humidity
Resonant frequencies
Resonant frequency
Sensors
Yagi antennas
Yagi–Uda antennas
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Summary:Coating an antenna with a hydrophilic polyimide film has been reported to enhance the effects of atmospheric relative humidity on the characteristics of the antenna. In this letter, we designed Yagi-Uda antennas with polyimide-coated dipoles, and we performed a simulation study investigating the influence of atmospheric relative humidity on their resonant frequencies. We conclude that antennas of this type might constitute viable sensors for the measurement of atmospheric relative humidity, and hypothesize that in certain situations such sensors may have advantages over existing alternatives.
ISSN:1545-598X
1558-0571
DOI:10.1109/LGRS.2017.2690525