Wireless Chipless System for Humidity Sensing
This 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 interes...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-07-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/18/7/2275 |
| _version_ | 1811297966710849536 |
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| author | José F. Salmerón Andreas Albrecht Silmi Kaffah Markus Becherer Paolo Lugli Almudena Rivadeneyra |
| author_facet | José F. Salmerón Andreas Albrecht Silmi Kaffah Markus Becherer Paolo Lugli Almudena Rivadeneyra |
| author_sort | José F. Salmerón |
| collection | DOAJ |
| description | This 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. |
| first_indexed | 2024-04-13T06:12:55Z |
| format | Article |
| id | doaj.art-9b238bf06f574c8e8a5ee8b56982d41b |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T06:12:55Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-9b238bf06f574c8e8a5ee8b56982d41b2022-12-22T02:58:58ZengMDPI AGSensors1424-82202018-07-01187227510.3390/s18072275s18072275Wireless Chipless System for Humidity SensingJosé F. Salmerón0Andreas Albrecht1Silmi Kaffah2Markus Becherer3Paolo Lugli4Almudena Rivadeneyra5Institute for Nanoelectronics, Technical University of Munich, 80333 München, GermanyInstitute for Nanoelectronics, Technical University of Munich, 80333 München, GermanyInstitute for Nanoelectronics, Technical University of Munich, 80333 München, GermanyInstitute for Nanoelectronics, Technical University of Munich, 80333 München, GermanyFaculty of Science, Free University of Bolzen-Bolzano, 39100 Bolzano, ItalyInstitute for Nanoelectronics, Technical University of Munich, 80333 München, GermanyThis 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.http://www.mdpi.com/1424-8220/18/7/2275flexible substrateinductive couplinginkjet printingprinted electronicsreaderresonance frequency |
| spellingShingle | José F. Salmerón Andreas Albrecht Silmi Kaffah Markus Becherer Paolo Lugli Almudena Rivadeneyra Wireless Chipless System for Humidity Sensing Sensors flexible substrate inductive coupling inkjet printing printed electronics reader resonance frequency |
| title | Wireless Chipless System for Humidity Sensing |
| title_full | Wireless Chipless System for Humidity Sensing |
| title_fullStr | Wireless Chipless System for Humidity Sensing |
| title_full_unstemmed | Wireless Chipless System for Humidity Sensing |
| title_short | Wireless Chipless System for Humidity Sensing |
| title_sort | wireless chipless system for humidity sensing |
| topic | flexible substrate inductive coupling inkjet printing printed electronics reader resonance frequency |
| url | http://www.mdpi.com/1424-8220/18/7/2275 |
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