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:
May. 15, 2012
Filed:
Sep. 24, 2009
Udo Karthaus, Neu-Ulm, DE;
Stephan Ahles, Erbach, DE;
Udo Karthaus, Neu-Ulm, DE;
Stephan Ahles, Erbach, DE;
Ubidyne, Inc., Wilmington, DE (US);
Abstract
The application relates to a calibration apparatus and calibration method for a tuneable resonator of a delta-sigma modulator of the continuous time, band pass type. The calibration apparatus comprises: a resonator driver capable of causing an oscillating behavior in a resonator output signal, a reference signal source that provides a reference signal, a frequency detector that provides a frequency relation signal corresponding to the frequency relation between the resonator output signal and the reference signal, and a controller that controls the tuneable resonator in dependence from the frequency relation signal so as to reduce frequency deviation.