Summary
International Conference on Emerging Technologies for Communications
2020
Session Number:C1
Session:
Number:C1-2
Verification of the Guidelines against the Interference due to the Spurious from the Multiple 920MHz RFIDs for the Triages
Masahiro WATANABE,
pp.-
Publication Date:2020/12/2
Online ISSN:2188-5079
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Summary:
In recent years, the 920 MHz band radio system has been spreading in the RFID tag system used in retail industry and RFID triage promoting relief activities by priority in the event of a disaster. However, there is a danger that the spurious signal emitted other than this signal from the RFID interferes with the multi-channel main signal. In this research, guidelines such as tags and arrangement of readers when applying to retailing and disaster triage are derived by link design considering reflectance and diffraction by the spurious signal possessed by RFID in consideration of the interference distance of RFID Proposed. As a result of the experiment, we observed that the spurious signal does not receive further interference from this signal at -20 dB. By setting horizontal distance of minimum 0.9 m on the ground and minimum 1.1 m in space, we satisfied the DU ratio of 20 dB. Therefore, this study demonstrated the interference avoidance effect by this signal of RFID by the spurious signal.