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:
Jul. 08, 2003
Filed:
Oct. 12, 2001
Wilfried Tenten, Gammertingen, DE;
Friedemann Eberhardt, Deutlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A harmonically damped oscillator circuit including a controllable oscillator amplifier for generating an oscillator output signal and including an amplitude control circuit for controlling the amplitude A of the oscillator output signal, an amplitude control signal V being generated by the amplitude control circuit as a function of a determined amplitude A of the oscillator output signal in such a manner that the oscillator amplifier functions in a predefined operating range having an approximately linear amplification characteristic with a definable, small amplitude at a preset operating point, and the oscillator amplifier being designed in such a manner that the predefined operating range and the preset operating point are independent of the amplitude control signal V . Thus, a stable amplitude loop for producing a low-distortion oscillator output signal can be achieved also under consideration of a comparatively large scatter range of the used component characteristics and parameters. The oscillator circuit can, therefore, be effectively produced as an integrated circuit.