Spatially Selective Antenna for Very Close Proximity HF RFID Applications
High Frequency Electronics, Zebra Technologies Corporation
Boris Y. Tsirline, PhD
This article intro-duces a novel HF antenna with high spatial selectivity—its performance and func-tional characteristics are analyzed for two orthogo-nal alignments of the antenna and the trans-ponder using a simplified mathematical model. This model describes the relationship between the transponder interro-gation zone and the Reader RF power, anten-na and transponder geometries, and their electrical components.
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