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. 06, 2010
Filed:
Sep. 26, 2005
Applicants:
Peter Gregorius, München, DE;
Martin Streibl, Petershausen, DE;
Thomas Rickes, München, DE;
Inventors:
Assignee:
Infineon Technologies AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
A phase locked loop having reduced inherent noise is provided. The phase locked loop comprises a controlled oscillator for outputting a periodic output signal as a result of a control signal; a feedback unit for providing at least two periodic feedback signals having a constant phase shift to each other and each depending on the output signal; a phase/frequency detector for providing difference signals each depending on a periodic input signal and at least one of the feedback signals; and a control circuit for providing the control signal to the controlled oscillator depending on the difference signals.