Variable frequency radio frequency identification (rfid) tags
作者： David P. Erickson , Michele A. Waldner
DOI:
关键词:
摘要: Various radio frequency identification (RFID) tags are described that dynamically vary their resonant to reduce or eliminate the potential effects of electromagnetic “tag-to-tag” coupling. An RFID tag, for example, includes a main antenna tuned first frequency, and switching circuitry changes antenna. The may selectively couple electrical elements, such as capacitive inductive combinations thereof, tag. tag include sensing circuit determines when element adjust
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