RFID reader with multiple antenna selection and automated antenna matching
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United States of America Patent
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Jun 7, 2005
Grant Date -
N/A
app pub date -
May 27, 2003
filing date -
May 27, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention features an RFID smart shelf reader capable of working with a wide range of antenna types and numbers. The smart shelf reader readily accommodates and accurately reads a diverse range of package shapes, sizes, and contents. Multiple tags in close proximity to one another are accurately read by the smart shelf reader. The reader includes features for optimizing its own interface by periodically recalibrating itself to the current antenna load characteristics caused by varying external conditions, primarily in the type, number, and position of merchandise items on the shelf proximate at least one of the antennas. An external I/O interface is provided for communication with a remote controller.
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