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In this paper, we discuss the change of read range between a UHF passive RFID tag and a reader when a tag is close to another tag. The read range is determined by the strength of the forward and reverse link. These links are identified by comparing the calculated received and reflected power with the measured dependence of the read range on the distance between close tags. We developed a system to...
In this paper, we discuss change of read range between a UHF passive RFID tag and reader when a tag is close to another tag. The read range is determined by the strength of forward link and reverse link, which are represented by received power at a tag and reader, respectively. Approaching of tags causes electromagnetic interference between antennas of tags and results in change in impedance matching...
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