Patent ID: 8726731

Claim:
A yaw-rate sensor, comprising: a substrate having a main plane of extension; a first sensing-mass element and a second sensing-mass element, the first sensing-mass element being excitable by a first driving element into a first oscillation parallel to the main plane of extension, the second sensing-mass element being excitable by a second driving element into a second oscillation anti-parallel to the first oscillation, a first Coriolis displacement of the first sensing-mass element along a third direction perpendicular to the main plane of extension being detectable by a first sensing element, a second Coriolis displacement of the second sensing-mass element along the third direction being detectable by a second sensing means, and the first and second sensing-mass elements being coupled to each other by a first coupling element, wherein the first sensing-mass element is a first rocker structure and the second sensing element is a second rocker structure; wherein one of the first or second rocker structure is secured to one of the first or second driving element by a torsion spring, a torsion axis of the torsion spring running parallel to one of the first or second direction, and the one of the first or second rocker structure having an asymmetrical mass distribution relative to the torsion axis; wherein the torsion spring is implemented as a ladder spring.