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:
Dec. 16, 2008
Filed:
Apr. 17, 2006
Paul Burgess, Bochum, DE;
Paul Burgess, Bochum, DE;
Nokia Corporation, Espoo, FI;
Abstract
The invention relates to a phase-locked loop circuit () in a radio transceiver for the detection of the linear operation of a first voltage controlled oscillator (), which comprises a frequency divider (), a reference oscillator (), a phase detector () to compare the phases of the reference oscillator () with a divided frequency of the frequency divider (), and a charge pumping means () connected to the phase detector () and is characterized in that the connection () between the phase detector () and the charge pumping means () has at least one branch-off line () connected to at least one filtering means (), whose output voltage is related to the linear operation of the voltage controlled oscillator ().