Abstract
A novel ink-jet printed chipless RFID humidity sensor is presented. The sensor, based on a finite Artificial Impedance Surface (AIS), is ink-jet printed on a thin sheet of Mitsubishi paper, which is placed on a metal-backed cardboard layer. The frequency response of the AIS provides three deep nulls thanks to the three nested loops that constitute the unit cell of the periodic surface. The interaction between the humidity and the sensor results in a variation of the electric permittivity of the Mitsubishi paper and, consequently, in a frequency shift of the resonance peaks. The humidity sensor exhibits a frequency shift of the resonance peaks of 270MHz with a humidity level variation from 50% to 90%. The reliability of the sensor is confirmed by the high number of measurements performed in an ad-hoc climatic chamber.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.