Inkjet-printed UHF RFID folded dipole antennas for remote sensing applications

This paper presents an inkjet-printed tag antenna for RFID sensing applications. The antenna is designed to operate at the ultra high frequency (UHF) industrial, scientific, and medical (ISM) band and can be used for sensing applications where the parameter under sense can cause a shift in the antenna resonance frequency, which can be detected by the reader. The tag power-on threshold quantity, which is essential for associating the reader indication with the parameter under sense change, is predicted by exploiting simulation results and is verified experimentally with the implemented IC-loaded antenna.