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US 10,311,269 B2Granted
Method and system for improving the reading efficiency of RFID tags
AssigneeNeopost Technologies
InventorJean-Baptiste Pantaloni
Life of this patent
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AssigneeNeopost Technologies
InventorJean-Baptiste Pantaloni
Estimating the term…
A method and structure improves a reading efficiency for RFID tags located in a reading zone of a RFID reading apparatus. A structure is interposed between the RFID tag(s) and the RFID reading apparatus. The structure is essentially electrically non-conductive and comprises a network of RFID antennas. The network of RFID antennas network is positioned on the structure in a pattern whose periodicity in two dimensions is less than half an operating RFID wavelength, so as to create a three dimensional interferometric pattern with peaks of electromagnetic field intensities. The RFID reading apparatus or the at least one RFID tag is set in motion, relatively to one another. The at least one RFID tag is read by the RFID reading apparatus during the relative motion within the reading zone so that the three dimensional interferometric pattern shifts and thereby improves the reading efficiency.
A method for improving the reading efficiency of at least one RFID tag in a reading zone of a RFID reading apparatus at an operating RFID wavelength, comprising:
A system for improving the reading efficiency of at least one RFID tag in a reading zone of a RFID reading apparatus at an operating RFID wavelength, the system further comprising a structure, which is essentially electrically non-conductive and which includes a RFID antennas network positioned on said structure according to a pattern whose periodicity in the two dimensions is less than half said operating RFID wavelength for creating a three dimensional interferometric pattern with peaks of electromagnetic field intensities, wherein said structure is interposed between said at least one RFID tag and said RFID reading apparatus and wherein said structure is mobile relatively to said at least one RFID tag or to said RFID reading apparatus so that said three dimensional interferometric pattern shifts and improves the reading efficiency of said at least one RFID tag when being read by said RFID reading apparatus and the position of one of said peaks of electromagnetic field intensities coincides with the position of said at least one RFID tag.
A truck tarpaulin, which structure is essentially electrically non-conductive comprising a RFID antennas network positioned on said structure according to a pattern whose periodicity in the two dimensions is less than half said operating RFID wavelength for creating a three dimensional interferometric pattern with peaks of electromagnetic field intensities, when said truck tarpaulin is placed next to a RFID reading apparatus.
Dependencies are inferred from the claim text.