Small differential electric field activated uhf RFID device

Abstract

A small differential-electric-field-activated UHF RFID device. Such a device may be small and easy to manufacture, improving the viability of incorporating RFID technology into articles like tickets,cards, and tokens. Such a device may also be small and inexpensive enough to allow for redundant RFID chips to be placed on an article, improving the survivability of an RFID-enabled article. Such a device may also reduce the amount of metal or plastic that is used in order to create an article such as a smart ticket or card, improving recyclability.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to and benefit of U.S. Provisional Patent Application No. 62 / 444,823, filed January 11, 2017, the entire contents of which are incorporated herein by reference. Background technique [0003] A "smart label", also called a "smart label", is a printed coded label that contains an extremely flat configured transponder as an inlay inside the label. These transponders typically include a chip, antenna and bonding wire. [0004] In many processes, such as in logistics and transportation, "smart tags" or "smart labels" have replaced more traditional optical barcodes, as well as 2D barcodes, QR codes, etc., as the key means by which items can be identified and tracked. Automation of such optical encodings is limited in the appropriate distance for read success, and often requires manual manipulation to bring the code into the scanner's field of vision (or, alternatively, requires the use of a sc...

AI Technical Summary

Problems solved by technology

[0005] However, smart tags do have certain disadvantages

For example, smart marks are more susceptible to physical damage than optical barcodes

Smart tags are also somewhat more expensive to use than optical barcodes

While optical barcode markings can be printed using traditional marking printers or even standard consumer grade inkjet printers, smart markings must be printed using a more specialized printer and will have a slightly higher failure rate (typically around 5%) when printing

Finally, smart marks are larger and more prominent than optical barcode marks, limiting their usefulness in some applications

For example, "RFID tickets" typically have a large embedded antenna that spans a large portion of the ticket, which means that the user may run the risk of damaging the ticket and making it unusable due to it being folded

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