Analog Devices‘s patent involves a current sensor with two measurement coils on a substrate, ensuring equal electrostatic coupling from external conductors. The coils are positioned at the same distance from the current-carrying conductor. This innovation enhances accuracy in current measurement. GlobalData’s report on Analog Devices gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Analog Devices, was a key innovation area identified from patents. Analog Devices's grant share as of February 2024 was 70%. Grant share is based on the ratio of number of grants to total number of patents.

Current sensor with two measurement coils for accurate current measurement

Source: United States Patent and Trademark Office (USPTO). Credit: Analog Devices Inc

A current sensor patent (Publication Number: US11927607B2) has been granted, detailing a unique design comprising a substrate with multiple layers and vias connecting measurement conductors to form current measurement coils. The sensor includes interleaved first and second current measurement coils progressing in opposite circumferential directions, aligned in radial planes perpendicular to the substrate's surface. Additional features include return coils, compensation conductors, and a twisted-pair arrangement for connecting to a measurement circuit.

Furthermore, the patent describes a variation of the current sensor with additional layers and measurement conductors, forming multiple current measurement coils and return coils interleaved in different radial planes. The design allows for precise current measurement and reduced electrostatic coupling, with compensation conductors progressing in opposite circumferential directions. The sensor's unique configuration and layout on the substrate provide enhanced functionality and accuracy in measuring current passing through a conductor, making it a significant development in the field of current sensing technology.

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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.