The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2013
Filed:
Jun. 09, 2011
Robert James Pascoe Lander, Leuven, BE;
Robert James Pascoe Lander, Leuven, BE;
NXP B.V., Eindhoven, NL;
Abstract
A crystalline semiconductor resonator device comprises two matched resonators which are aligned differently with respect to the crystal structure of the crystalline semiconductor. The resonators each comprise a portion of a material having a different temperature dependency of the Young's modulus to the temperature dependency of the Young's modulus of the crystalline semiconductor material. In this way, the suspension springs for the resonators have different properties, which influence the resonant frequency. The resonant frequency ratios between the first and second resonators at a calibration temperature and an operation temperature are measured. A frequency of one (or both) of the resonators at the operation temperature can then be derived which takes into account the temperature dependency of the one of the resonators.