Electromagnetic Signature of Hilbert Curve-Based Chipless RFID Tags Using Numerical Analysis

This study describes a chipless Radiofrequency Identification (RFID) tag that is based on the Hilbert Curve Filling technique. The traditional RFID has some security vulnerabilities, so an unauthorized party could obtain information. One alternative is to use fractal (irregular) shaped tags to store information as an electromagnetic signature. It is a chipless passive tag made of irregular unit cells and full-wave Electromagnetic analysis (EM) of the designed tags in Matlab is investigated by exporting them in Computer Simulation Technology (CST) in the frequency range of 2 to 12 GHz. The performance of the tags is analyzed by observing the radar cross-section (RCS) of the tag in linear polarization, which was obtained for four iterations after the simulation.