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A versatile, automated, cost-effective testing platform for hands-on UHF RFID measurements

 
: Beuster, N.; Ihlow, A.; Blau, K.; Trabert, J.; Andrich, C.; Galdo, G. Del

:

Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Conference on RFID, RFID 2019 : Phoenix, Arizona, USA, 2-4 April 2019
Piscataway, NJ: IEEE, 2019
ISBN: 978-1-72811-210-7
ISBN: 978-1-72811-209-1
ISBN: 978-1-72811-211-4
Art. 18721803, 7 pp.
International Conference on RFID <13, 2019, Phoenix/Ariz.>
European UnionEuropean Union (EU)
English
Conference Paper
Fraunhofer IIS ()

Abstract
In this paper, we present cost-effective techniques to assess UHF RFID performance for real world applications. This includes a positioner, made from roof battens and stepper motors, which can position a tag in 3-D space. It can be used for a variety of measurements, e.g., tag RSSI or phase patterns or influence of distance to materials and other tags. We also present a 1-D positioner from similar materials to lift a reader antenna to show reflections from ground and perform limited motion measurements. For the measurements themselves, we use a commercial off-the-shelf R420 Impinj reader, which we control via LLRP commands, implemented in Python. To verify the communication link between reader and tag, we use a low-cost SDR based on an RTL2832U chip. We also built clamps and adapters from hardware store materials to connect a tag to RF equipment to read the communication and test external antennas. For bulk detection performance testing, we built a frame with RF neutral layers with attached tags.

: http://publica.fraunhofer.de/documents/N-569178.html