The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 2026
Filed:
Apr. 02, 2024
Allegro Microsystems, Llc, Manchester, NH (US);
Nathan Shewmon, Braunschweig, DE;
Christian Kasparek, Heidelberg, DE;
Allegro MicroSystems, LLC, Manchester, NH (US);
Abstract
Systems, structures, circuits, and methods provide coil pairs that are used with magnetic-field type current sensors. Coil pairs, with a smaller coil nested within a larger coil, can be employed with or for magnetic field/flux sensors or sensing elements to compensate for the degradation in sensitivity as the frequency of the sensed current increases. A coil pair can be integrated into or on a substrate having a field-based current sensor. In use, frequency-dependent current is induced in a larger coil that is then driven through a smaller coil which concentrates a magnetic field on the sensitive element. The larger coil is configured to provide an increasing current as the frequency of the ambient magnetic field increases and provide the increasing current to the second coil to compensate for a frequency-dependent coupling factor between the magnetic field sensor and the ambient magnetic field.