Patent ID: 8166818

Claim:
A translational, Micro-Electro-Mechanical System (MEMS) accelerometer device comprising: a device layer comprising: a proof mass with a electrically conductive trace mounted on at least one side of the proof mass; and one or more frame components; a magnetic return path component attached to a first side of the device layer; and a magnet unit attached to a second side of the device layer, the magnet unit comprising: two magnetically conductive posts located proximate to the electrically conductive trace on the proof mass; a base section formed of the same material as the conductive posts; a non-magnetically conductive post connected between the conductive posts; and a magnet attached to the non-magnetically conductive post within a cavity formed in the base section between the two magnetically conductive posts; wherein the two magnetically conductive posts and the base section comprise a ferrous material and the non-magnetically conductive post comprise a glass substrate.