Modeling and characterization of a substrate integrated chip-less RFID tag communication system

摘要

In this work a communication channel for substrate-integrated RFID tags is modeled and characterized. The tags are based on a substrate integrated cavity resonators where each resonator is connected to an antenna. An address is given to each tag based on different effective permittivity of the substrate-integrated cavity resonator. In order to study the signal propagation between the tag and the reader, the communication with the tags is modeled using a two-port matrix model consisting of a resonator and antennas matrix representations. The tags are fabricated and tested experimentally; the results are compared to the model. Parameters such as the distance between the tags and the reader and the reader's antenna have been studied and their effect on the interrogation has been recorded. Finally, interrogation circuit architecture for substrate-integrated tags is proposed.