Reliability of washable wearable screen printed UHF RFID tags

2014 ◽  
Vol 54 (4) ◽  
pp. 840-846 ◽  
Author(s):  
J. Virkki ◽  
T. Björninen ◽  
T. Kellomäki ◽  
S. Merilampi ◽  
I. Shafiq ◽  
...  
Keyword(s):  
Rfid Tags ◽  
Uhf Rfid ◽  
Screen Printed

Effect of Curing Conditions on Electrical Properties of Screen-Printed Fabric Antenna for UHF RFID Tags

2019 ◽  
Vol 6 (3) ◽  
pp. 24-27
Author(s):  
Tu Huating ◽  
Hu Jiyong ◽  
Bai Huan ◽  
Jiang Hongyan ◽  
Hong Hong ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Rfid Tags ◽  
Uhf Rfid ◽  
Curing Conditions ◽  
Screen Printed

scholarly journals Towards Washable Wearable Antennas: A Comparison of Coating Materials for Screen-Printed Textile-Based UHF RFID Tags

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Tiiti Kellomäki ◽  
Johanna Virkki ◽  
Sari Merilampi ◽  
Leena Ukkonen
Keyword(s):  
Integrated Circuits ◽  
Radio Frequency Identification ◽  
Hard Coatings ◽  
Rfid Tags ◽  
Uhf Rfid ◽  
Coating Materials ◽  
Wearable Antennas ◽  
Frequency Identification ◽  
Fabric Surface ◽  
Screen Printed

(Radio frequency identification) RFID tags integrated into clothing enable monitoring of people without their conscious effort. This requires tags to be an unnoticeable part of clothing and comfortable to wear. In this study, RFID antennas were screen printed on two different fabrics, six different coating materials for the (integrated circuits) ICs were applied, and the reliability of these RFID tags was tested with moisture and laundry tests. Generally, glue-type coating materials were easier to handle and could be spread precisely. All the tags were operational immediately after the coatings were applied, and five of the coating materials were seen to protect the IC from detaching in the laundry. It was found that the uneven fabric surface caused discontinuities and breaks in narrow conductors, and thus hard coatings may also be needed to keep the tag from breaking in laundry.

Antenna design for UHF RFID tags: a review and a practical application

2005 ◽  
Vol 53 (12) ◽  
pp. 3870-3876 ◽  
Author(s):  
K.V.S. Rao ◽  
P.V. Nikitin ◽  
S.F. Lam
Keyword(s):  
Antenna Design ◽  
Rfid Tags ◽  
Uhf Rfid ◽  
Practical Application

scholarly journals 3D-Printed Graphene Antennas and Interconnections for Textile RFID Tags: Fabrication and Reliability towards Humidity

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Han He ◽  
Mitra Akbari ◽  
Lauri Sydänheimo ◽  
Leena Ukkonen ◽  
Johanna Virkki
Keyword(s):  
Rfid Tags ◽  
High Humidity ◽  
Direct Write ◽  
Uhf Rfid ◽  
Printed Antenna ◽  
Passive Uhf Rfid ◽  
Measurement Results ◽  
One Step ◽  
3D Printed ◽  
Wireless Measurement

We present the possibilities of 3D direct-write dispensing in the fabrication of passive UHF RFID graphene tags on a textile substrate. In our method, the graphene tag antenna is deposited directly on top of the IC strap, in order to simplify the manufacturing process by removing one step, that is, the IC attachment with conductive glue. Our wireless measurement results confirm that graphene RFID tags with printed antenna-IC interconnections achieve peak read ranges of 5.2 meters, which makes them comparable to graphene tags with epoxy-glued ICs. After keeping the tags in high humidity, the read ranges of the tags with epoxy-glued and printed antenna-IC interconnections decrease 0.8 meters and 0.5 meters, respectively. However, after drying, the performance of both types of tags returns back to normal.

scholarly journals Experimental Study on Inkjet-Printed Passive UHF RFID Tags on Versatile Paper-Based Substrates

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Han He ◽  
Lauri Sydänheimo ◽  
Johanna Virkki ◽  
Leena Ukkonen
Keyword(s):  
Substrate Material ◽  
Optimal Number ◽  
Rfid Tags ◽  
Uhf Rfid ◽  
Rfid Tag ◽  
Passive Uhf Rfid ◽  
Wireless Applications ◽  
Efficient Manufacturing ◽  
Nanoparticle Ink ◽  
Pattern Resolution

We present the possibilities and challenges of passive UHF RFID tag antennas manufactured by inkjet printing silver nanoparticle ink on versatile paper-based substrates. The most efficient manufacturing parameters, such as the pattern resolution, were determined and the optimal number of printed layers was evaluated for each substrate material. Next, inkjet-printed passive UHF RFID tags were fabricated on each substrate with the optimized parameters and number of layers. According to our measurements, the tags on different paper substrates showed peak read ranges of 4–6.5 meters and the tags on different cardboard substrates exhibited peak read ranges of 2–6 meters. Based on their wireless performance, these inkjet-printed paper-based passive UHF RFID tags are sufficient for many future wireless applications and comparable to tags fabricated on more traditional substrates, such as polyimide.

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