Recently, an RFID smart-shelf system has received a great attention. This system is capable of tracking and identifying books via a wireless communication between a planar waveguide sheet and RFID tags. One of the challenging problems to be solved for the system is to eliminate the effect of low sensitivity areas where the RFID tags are difficult to be detected due to the standing wave on the sheet. In this report, a pair of slits and switching diversity technique are introduced to the planar waveguide sheet in order to eliminate the effect of the low sensitivity areas. Performance of the planar waveguide sheet is demonstrated by numerical simulation and experiments.
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Recently, an RFID smart-shelf system has received a great attention. This system is capable of tracking and identifying books via a wireless communication between a planar waveguide sheet and RFID tags. One of the challenging problems to be solved for the system is to eliminate the effect of low sensitivity areas where the RFID tags are difficult to be detected due to the standing wave on the sheet. In this report, a pair of slits and switching diversity technique are introduced to the planar waveguide sheet in order to eliminate the effect of the low sensitivity areas. Performance of the planar waveguide sheet is demonstrated by numerical simulation and experiments.