UHF RFID Reader Sensitivity Requirements Due to Poor Tag Matching

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Authors
  Chen, Rui
Yang, Shuai
Penty, Richard
Crisp, Michael
Conference Name
2022 IEEE 12th International Conference on RFID Technology and Applications (RFID-TA)
Type
Conference Object
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Citation
Chen, R., Yang, S., Penty, R., & Crisp, M. UHF RFID Reader Sensitivity Requirements Due to Poor Tag Matching. 2022 IEEE 12th International Conference on RFID Technology and Applications (RFID-TA). https://doi.org/10.17863/CAM.85822
Abstract
Passive ultra-high frequency (UHF) RFID systems are conventionally assumed to be downlink limited due to the relatively high power consumption of a tag’s integrated circuit (IC). In this work, it is demonstrated that under certain conditions, tags’ uplink/downlink losses become significantly asymmetrical, causing tens of decibels more loss in the uplink, thus making the system uplink limited. Our study reveals the necessity of developing RFID readers with higher sensitivity. It is shown that in extreme cases, the uplink loss can be 40 dB greater than in the downlink.
Sponsorship
This work was supported by EPSRC EP /S-19405/1 Channel Optimised Distributed Passive Sensor Networks.
Funder references
Engineering and Physical Sciences Research Council (EP/S019405/1)
Embargo Lift Date
2023-06-28
Identifiers
External DOI: https://doi.org/10.17863/CAM.85822
This record's URL: https://www.repository.cam.ac.uk/handle/1810/338409
Rights
All Rights Reserved
Licence URL: http://www.rioxx.net/licenses/all-rights-reserved
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