Análisis de la antena RFID empleando diferentes sustratos textiles en la banda ISM

Abstract

Using electromagnetic modeling in Ansys HFSS, an RFID antenna with different textile substrates such as denim-cotton and polyester-cotton tuned to the 4 GHz frequency of the ISM band (2.4 – 5.8 GHz) was analyzed. Performance parameters such as reflection coefficient, VSWR and gain were analyzed. For the cotton denim substrate where an S11 value was obtained is -14.44 |dB| and a VSWR of 1.46 while for the cotton polyester substrate it reached an S11 of -41.39 |dB| and VSWR of 1.04. Where the results show that the cotton polyester substrate has a higher gain 6.2 |dB| this material being suitable to be used in RFID antennas, reflecting a decrease in the complexity of the circuits involved, in a process that better facilitates the design, manufacture, flexibility and robustness of the antenna.