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dc.contributor.authorSalmeron JF
dc.contributor.authorAlbrecht A
dc.contributor.authorKaffah S
dc.contributor.authorBecherer M
dc.contributor.authorLugli P
dc.contributor.authorRivadeneyra A
dc.date.accessioned2019-04-16T15:03:19Z
dc.date.available2019-04-16T15:03:19Z
dc.date.issued2018
dc.identifier.issn1424-8220
dc.identifier.urihttp://dx.doi.org/10.3390/s18072275
dc.identifier.urihttps://www.mdpi.com/1424-8220/18/7/2275
dc.identifier.urihttp://hdl.handle.net/10863/9375
dc.description.abstractThis work describes a fully wireless sensory system where a chipless strategy is followed in the sensor part. Alternatively, to characterize only the sensing element, we present the response of the reader antenna when the sensing element is placed in its vicinity: changes in the parameter of interest are seen by the reader through inductive coupling, varying its frequency response. The sensing part consists of a LC circuit manufactured by printing techniques on a flexible substrate, whose electrical permittivity shows dependence with the moisture content. The measurement distance show significant differences in the frequency response: a change of 700 kHz is observed when the measurement is performed directly on the wireless chipless sensor between 20% and 80%RH, while this variation in frequency is reduced more than three times when measuring at the reader antenna with 5 mm distance between elements. Furthermore, we demonstrate the importance of the separation between reader and sensor to get a reliable measuring system.en_US
dc.languageEnglish
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.relation
dc.rights
dc.subjectresonance frequencyen_US
dc.subjectreaderen_US
dc.subjectinductive couplingen_US
dc.subjectflexible substrateen_US
dc.subjectPrinted electronicsen_US
dc.subjectInkjet printingen_US
dc.titleWireless Chipless System for Humidity Sensingen_US
dc.typeArticleen_US
dc.date.updated2019-04-16T03:00:23Z
dc.language.isiEN-GB
dc.journal.titleSensors
dc.description.fulltextopenen_US


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