Verifying sensitivity of RFID tags manufactured by conductive ink printed on paper versus an RFID tag made of copper on hard substrate

In this work, a dipole antenna printed on paper as flexible substrate using conductive silver ink for RFID tags operating at 915 MHz is presented. For comparison purposes, another printed antenna was built on hard substrate, and the tag´s sensitivities for both antennas are compared. Thus, a technique to determine those sensitivities also is presented and consists of a small and low-cost GTEM cell that provides an environment immune to electromagnetic radiation for the measurements.