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:
Mar. 19, 2002
Filed:
Mar. 05, 2001
Applicant:
Inventors:
Timo Gossmann, München, DE;
Edmund Götz, Dachau, DE;
Assignee:
Infineon Technologies., Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/24 ; H03L 7/06 ;
U.S. Cl.
CPC ...
H03D 3/24 ; H03L 7/06 ;
Abstract
The circuit compensates for phase error in the case of fractional-N-based PLL frequency synthesizers. All required actuating and reference signals are derived from the VCO frequency of the voltage-controlled oscillator by using an auxiliary phase-locked loop. The circuit is specifically applicable for HF-PLL frequency synthesizers using integrated circuit technology.