| US 7,451,648 B2 | ||
| Internal sensor with disturbing current reduced by compensation branches | ||
| Raphaël Brisson, Asnieres sur Seine (France); and Paul Featonby, Newcastle-Upon-Tyne (United Kingdom) | ||
| Assigned to Sagem Defense Securite, Paris (France) | ||
| Filed on Jun. 30, 2006, as Appl. No. 11/477,939. | ||
| Claims priority of application No. 05 07069 (FR), filed on Jul. 04, 2005. | ||
| Prior Publication US 2007/0013364 A1, Jan. 18, 2007 | ||
| Int. Cl. G01P 15/10 (2006.01); G01P 15/08 (2006.01) | ||
| U.S. Cl. 73—514.29 [73/862.59] | 7 Claims |
| 1. An inertial sensor comprising a piezoelectric plate having defined therein a vibrator member carrying excitation electrodes connected to an excitation circuit comprising conductor tracks carried by the piezoelectric plate, the excitation circuit including a disturbing circuit portion in which two of the conductor tracks of the excitation circuit extend side by side and on either side of a midplane of a portion of the plate that is subjected to deformation when the sensor is subjected to acceleration, wherein, in the disturbing circuit portion, compensation branches are associated with corresponding disturbing conductor track portions, and wherein each compensation branch has one end connected to a corresponding disturbing conductor track portion and lies on a side of the midplane that is opposite from the side on which the disturbing conductor track portion lies. |