ALEXANDRIA, Va., March 31 -- United States Patent no. 12,591,025, issued on March 31, was assigned to Allegro MicroSystems LLC (Manchester, N.H.).
"Passive frequency compensation with coil pairs" was invented by Nathan Shewmon (Braunschweig, Germany) and Christian Kasparek (Heidelberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "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 in...