RFID Metal Packaging Works as Antenna

QinetiQ and Crown collaborate to develop adaptation of QinetiQ's Omni-ID Radio Frequency Identification (RFID) technology for use on metal packaging. The improvements will enable RFID tags at the unit-level on metal items. Technology advancement is expected to integrate the metal substrate as part of the RFID tag's antenna. ...

... "This will enable brand owners to integrate ultra high frequency (UHF) RFID tags into metal packaging for a wide variety of applications at the single item level. Designed to mitigate issues such as signal reflection, detuning and grounding which reduce or negate RFID's effectiveness on metal packaging or with aqueous-based products, the unique technology leverages several of metal's inherent properties and shifts the format into an advantageous position.

QinetiQ's standalone Omni-ID tags and integrated Omni-ID packaging technology allows a UHF tag to be mounted directly onto the metal substrate. Measuring substantially less than 1mm in thickness, the unique Omni-ID structure collects and focuses RF energy and enables highly efficient coupling to the chip. Another advantage of the system is that RFID chips require only a short coupling antenna rather than the large dipole usually incorporated in UHF tags, significantly reducing manufacturing costs. Crown and QinetiQ are continuing development of the technology for metal packaging to further optimize design. In the near future, it is expected that the metal substrate itself will have an integral role in the way the technology functions. Using a beverage or food can as an example, the can itself would serve as the antenna, simplifying production of the RFID tag and further reducing costs. " ...

Via Qinetiq: Crown teams up with QinetiQ to resolve challenges of RFID on metal packaging ...