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http://dx.doi.org/10.5515/KJKIEES.2014.25.1.83

Read Range Reduction in Passive UHF RFID Tag by Smart Device Signal Interference  

Kwon, Jongwon (ICT Division, Korea Testing Laboratory)
Song, Taeseung (ICT Division, Korea Testing Laboratory)
Cho, Wonseo (ICT Division, Korea Testing Laboratory)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.25, no.1, 2014 , pp. 83-91 More about this Journal
Abstract
The passive UHF RFID tags for item-level tagging are now explosively used in the supply chain and retail applications as they have several advantages, the two most relevant are cost and a longer read range. However, the signal interference problem between RFID tags and smart devices in real world is expected according to the smart-phone and tablet market growth together. The performance of RFID tags can be significantly less. The popular examples are the read-success rates and read range reduction. Especially, KT Corp. recently emphasized the serious signal interference at 900 MHz of LTE and old RFID frequencies through their public demonstration. By popular demands, this paper suggests the interference tolerance measurement method between the passive UHF RFID tag and the transmitted signal from a smart device. In addition, we selected three passive UHF RFID tags(Inlay) available on the market and quantitatively evaluated read range reduction results by interference signals using the PCR(Performance Change Rates) index. As a result, the LTE system is about three times as effective as the WCDMA system in terms of interference effects, and the read range performance of two RFID tags about 60 % drop.
Keywords
Passive UHF RFID Tag; Interference Tolerance; Measurement; Read Range;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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