SATO has filed a patent for an RFID read antenna assembly designed to be used on a metal substrate. The assembly includes a high permeability layer, an elongate carrier, and at least one antenna coil. The antenna coil has uniformly spaced transversely arranged portions that form a sequence of antenna loops with a constant width. This design allows for efficient reading of RFID tags on articles positioned relative to the metal substrate. GlobalData’s report on SATO gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on SATO, Contactless verification was a key innovation area identified from patents. SATO's grant share as of September 2023 was 29%. Grant share is based on the ratio of number of grants to total number of patents.
Rfid read antenna assembly for metal substrate with uniform spacing
A recently filed patent (Publication Number: US20230289719A1) describes an RFID read antenna assembly designed for use on a metal substrate to read RFID tags carried by articles positioned relative to the substrate. The assembly includes a high permeability layer that can be mounted to the metal substrate, an elongate carrier mounted to the high permeability layer, and at least one antenna coil carried by the carrier. The antenna coil has uniformly spaced transversely arranged portions that form a sequence of antenna loops of constant width. The width of each antenna loop is the same as the spacing between adjacent transversely arranged portions.
The patent also describes various configurations and features of the antenna assembly. For example, the antenna coil can have transversely arranged portions that form a figure of eight-type configuration, and multiple pairs of spaced, transversely arranged portions can create a sequence of antenna loops. The assembly can include multiple antenna coils arranged in a staggered relationship and driven sequentially or out of phase with each other. The high permeability layer can be a ferrite layer and can include a locator for positioning it relative to the metal substrate. The assembly can also have a connector for electrical connection to an RFID tag interrogator.
The patent further describes an inventory tracking method using the metal substrate and antenna assembly. The method involves positioning an article with an associated RFID tag relative to the antenna coil of the assembly and interrogating the tag by driving the assembly via an RFID tag interrogator. The method can include driving multiple antenna coils sequentially or out of phase to interrogate the tag. In a system implementation, the metal substrate is mounted with the antenna assembly and communicates with the interrogator. The system can also include RFID tags mountable to articles and a connection arrangement for communication between the assembly and interrogator.
Overall, this patent presents an RFID read antenna assembly and related methods and systems for inventory tracking on metal substrates. The assembly's design allows for efficient reading of RFID tags on articles positioned relative to the substrate, and the various configurations and features provide flexibility and adaptability for different tracking scenarios.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
