RFThermometer: A Temperature Estimation System with Commercial UHF RFID Tags

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.

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Simulation and measurements of physical layer parameters for passive UHF RFID tags toward collision detection and canceling

2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA) ◽

10.1109/rfid-ta.2012.6404551 ◽

2012 ◽

Cited By ~ 2

Author(s):

Benbaghdad Mohamed ◽

Belkacem Fergani ◽

Smail Tedjini ◽

Etienne Perret

Keyword(s):

Collision Detection ◽

Physical Layer ◽

Rfid Tags ◽

Uhf Rfid ◽

Passive Uhf Rfid

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

International Journal of Antennas and Propagation ◽

10.1155/2016/9265159 ◽

2016 ◽

Vol 2016 ◽

pp. 1-8 ◽

Cited By ~ 7

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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