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:
Apr. 20, 2010
Filed:
Dec. 29, 2006
Applicants:
Nikolay Tchamov, Tampere, FI;
Pekko Ruippo, Tampere, FI;
Tapio Lehtonen, Tampere, FI;
Inventors:
Assignee:
Infineon Technologies AG, Neubiberg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B 5/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A voltage-controlled oscillator has a resonance tank core providing a voltage-dependent resonance frequency, switching units connected with the resonance tank core for changing output voltage levels of the oscillator with a frequency corresponding to the resonance frequency of the resonance tank core. At least two of the switching units have pairs of Darlington transistors which are connected via a Darlington node. Output terminals are used for outputting the output voltage levels.