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:
Oct. 06, 2009
Filed:
Sep. 14, 2005
Gilles Bas, Beauvoisin, FR;
Vincent Cheynet DE Beaupre, Marseilles, FR;
Zaid Lakhdar, Saint-Cyr/mer, FR;
Weneestas Rahajandraibe, Marseilles, FR;
Gilles Bas, Beauvoisin, FR;
Vincent Cheynet De Beaupre, Marseilles, FR;
Zaid Lakhdar, Saint-Cyr/mer, FR;
Weneestas Rahajandraibe, Marseilles, FR;
STMicroelectronics SAS, Rousset, FR;
Universite de Provence (Aix-Marseille I), Marseille Cedex, FR;
Abstract
An oscillator is provided that includes an oscillating structure generating an output signal with a frequency that drifts as a function of a parameter of its environment, and a compensation circuit coupled to the oscillating structure. The oscillating structure has a ring structure that includes delay cells looped together, and the compensation circuit supplies a compensation signal to the oscillating structure. The compensation signal varies as a function of changes in the parameter in order to compensate for the drift in the frequency of the generated signal. This makes it possible to compensate for oscillator temperature drifts in the absence of a regulation loop.