Abstract
In this paper chipless RFID tag with integrated sensor for IoT application is presented. The tag is capable of transmitting information of 9-bit data. The tag structure is analyzed for both FR4 and Kapton HN substrates having different dielectric constants. It has been observed that with the change in dielectric permittivity, there will be shift in resonances. The tag can be used for monitoring and sensing moisture. The tag comprises of 9 ring resonators. The overall radius of designed chipless tag is 7mm. The compact chipless RFID tag is optimized for radio frequency ranges from 5.1–11.4 GHz using FR4 substrate and from 5.8–12.5 GHz using Kapton HN substrate. The novelty of this design relies on flexible nature of tag. The presented tag is very cheap and can be deployed for various low cost sensing applications.
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