Title :
Characterization of embroidered dipole-type RFID tag antennas
Author :
Moradi, Elham ; Bjorninen, Toni ; Ukkonen, Leena ; Rahmat-Samii, Yahya
Author_Institution :
Dept. of Electron., Tampere Univ. of Technol., Tampere, Finland
Abstract :
Wearable RFID tags and wireless sensors can be used for on-body and human monitoring applications. Embroidery with conductive thread provides compelling means for the fabrication of seamlessly garment-integrable antennas for wearable tags and wireless sensors. In this paper, we present the fabrication of fully assembled tags based on embroidered dipole-type antennas. The prototype tags achieve 5.5-to-7 meters read range. Moreover, we present a method for estimating the effective conductivity of the embroidery pattern, which depends on the sewing pattern and the stitch density. This will enable the judicious optimization of embroidered tag antennas using electromagnetic simulation tools.
Keywords :
dipole antennas; radiofrequency identification; wearable antennas; conductive thread; electromagnetic simulation tools; embroidered dipole-type RFID tag antenna characterization; embroidery pattern conductivity; human monitoring applications; seamlessly garment-integrable antenna fabrication; wearable RFID tag antenna; wireless sensor network; Antenna measurements; Conductivity; Dipole antennas; Frequency measurement; Gain measurement; Yarn; UHF RFID; conductive thread; embroidered RFID entenna; sewing machine; wearable RFID tag;
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.2012.6404522
