Spatially Selective Antenna for Very Close Proximity HF RFID Applications—Part 2

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  • Author: Boris Y. Tsirline, PhD
This article contin-ues the description and analysis of a novel HF antenna with high spatial selectivity. Its performance and functional characteristics are analyzed for two orthogonal alignments of the antenna and the trans-ponder using a simplified mathematical model. Part 1 provided background on RFID tech-nology, identified the problem to be solved, and began a discussion of the interaction of the antenna and the transponder. Part 2 contin-ues the discussion, presenting an analysis of coupling mechanism between antenna and transponder with respect to their orientation and relative movement.
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