Patent · US Active

Coil assembly and corresponding measuring assembly

US11268832B2 · kind B2 · utility

0Cited by

3References

19Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Buck · Tamm, DE
Andreas Merz · Freiberg am Neckar, DE
Oliver Krayl · Gerlingen, DE
Stefan Leidich · Rutesheim, DE

Key dates

Filing date	Jun 12, 2017
Grant date	Mar 8, 2022
Priority date	—
Expiry date	Sep 30, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH05K2201/1003
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A coil assembly includes a coil winding and a multilayer printed circuit board. The coil winding has multiple loops that are arranged in different layers of the printed circuit board and form a main magnetic field with a main measuring direction perpendicular to a main plane of the printed circuit board. The loops arranged in different layers are electrically connected together via at least one via. The printed circuit board has at least four vias or a whole-number multiple of four vias that form an equal number of reverse current paths and forward current paths between the loops of the coil winding. Each pair of vias with the same current path direction is arranged point-symmetrically relative to a common mirror point such that magnetic loops that are formed on printed circuit board secondary planes arranged perpendicularly to the main plane have opposite directions and compensate for one another.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.