Title :
A resistant textile tag antenna for RFID UHF frequency band
Author :
Saba, R. ; Deleruyelle, T. ; Alarcon, Juan ; Egels, Matthieu ; Pannier, P.
Author_Institution :
IM2NP, Marseille, France
Abstract :
Wearable textile systems are nowadays a fast growing field. Besides lower prices, wearable tags antenna have to resist laundry cycles which means high pressure, high temperature and humidity. This paper introduces a novel RFID textile tag antenna, made of two distinct antennas coupled together to protect UHF RFID system from environment stress : a circular small-loop antenna packaged with the RFID chip and a wideband log-periodic antenna made of electro-thread. Electric proprieties of the chip, the small-loop antenna and matching between both are shown. Used method to characterize electro-thread and the choice of electro-thread are presented. Finally the whole tag antenna is simulated and results are presented in part IV. In the UHF band we found the matched reflection coefficient less then -10 dB and the antenna´s half power beamdwith has 80°. According to Friis equation we can estimated the read range at 4 meters in the RFID UHF band.
Keywords :
UHF antennas; broadband antennas; log periodic antennas; loop antennas; radiofrequency identification; textiles; wearable antennas; Friis equation; RFID UHF frequency band; RFID chip; RFID textile tag antenna; circular small-loop antenna; electric propriety; electro-thread; environment stress; laundry cycles; matched reflection coefficient; resistant textile tag antenna; wearable tag antenna; wearable textile systems; wideband log-periodic antenna; Frequency measurement; Geology; Humidity measurement; Impedance; Ions; Radiofrequency identification;
Conference_Titel :
RFID-Technologies and Applications (RFID-TA), 2012 IEEE International Conference on
Conference_Location :
Nice
Print_ISBN :
978-1-4673-4656-6
Electronic_ISBN :
978-1-4673-4658-0
DOI :
10.1109/RFID-TA.2012.6404513
